/* ============================================================
   NEUROAMIN — Main Stylesheet
   ============================================================ */

/* ── Google Fonts: Vazirmatn ─────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@100;200;300;400;500;600;700;800;900&display=swap');

/* ── CSS Custom Properties ───────────────────────────────── */
:root {
  --black:       #0d0d0d;
  --black-soft:  #141414;
  --black-card:  #1a1a1a;
  --white:       #f5f5f5;
  --white-pure:  #ffffff;
  --blue:        #2E86DE;
  --blue-dark:   #1a65b0;
  --blue-light:  #5ba3e8;
  --blue-glow:   rgba(46, 134, 222, 0.22);
  --blue-glow-strong: rgba(46, 134, 222, 0.45);
  --gray-light:  #ebebeb;
  --gray-mid:    #888888;
  --gray-dark:   #444444;
  --text-dark:   #1a1a1a;
  --text-muted:  #666666;

  --font: 'Vazirmatn', sans-serif;
  --radius: 14px;
  --radius-sm: 8px;
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-card-hover: 0 12px 40px rgba(46,134,222,0.18), 0 4px 16px rgba(0,0,0,0.12);
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text-dark);
  direction: rtl;
  overflow-x: hidden;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font);
}

/* ── Utility Classes ─────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-muted);
  max-width: 640px;
}

.blue-bar {
  width: 48px;
  height: 3px;
  background: var(--blue);
  border-radius: 2px;
  margin-bottom: 28px;
}

/* Scroll-reveal base */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1), transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Directional variants */
.reveal-from-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-from-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95) translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-scale.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.22s; }
.reveal-delay-3 { transition-delay: 0.34s; }
.reveal-delay-4 { transition-delay: 0.46s; }

/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), padding var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
  box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}

#navbar.scrolled .nav-logo {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-logo img {
  height: 32px;
  width: auto;
  filter: invert(0);
}

.nav-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  color: rgba(245,245,245,0.75);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform 0.25s ease;
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  min-height: 100vh;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Bottom fade — deepens the black toward the divider */
#hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 180px;
  background: linear-gradient(to bottom, transparent, rgba(13,13,13,0.85));
  pointer-events: none;
  z-index: 1;
}

/* Spotlight sweep overlay */
.hero-spotlight {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 600px 600px at var(--mx, 50%) var(--my, 50%),
    rgba(46, 134, 222, 0.08) 0%,
    transparent 70%);
  pointer-events: none;
  transition: background 0.15s ease;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  padding: 120px 24px 80px;
}

.hero-logo-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 40px;
}

.hero-logo {
  width: clamp(180px, 28vw, 320px);
  height: auto;
  position: relative;
  z-index: 2;
  animation: logoFloat 6s ease-in-out infinite;
  filter: drop-shadow(0 0 0px rgba(46,134,222,0));
  transition: filter 0.3s ease;
}

.hero-logo:hover {
  filter: drop-shadow(0 0 30px rgba(46,134,222,0.55));
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(245,245,245,0.75);
  margin-top: 32px;
  font-weight: 300;
  line-height: 2;
  max-width: 520px;
  margin-inline: auto;
  animation: fadeUp 0.9s ease 0.7s both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  background: var(--blue);
  color: var(--white-pure);
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(46,134,222,0.3);
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(46,134,222,0.45);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  animation: fadeUp 1s ease 1.4s both;
}

.hero-scroll-indicator span {
  font-size: 0.75rem;
  color: rgba(245,245,245,0.3);
  letter-spacing: 0.1em;
  font-weight: 300;
}

.scroll-chevron {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(245,245,245,0.3);
  border-bottom: 2px solid rgba(245,245,245,0.3);
  transform: rotate(45deg);
  animation: scrollBounce 1.8s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 0.4; }
  50%       { transform: rotate(45deg) translate(4px, 4px); opacity: 1; }
}

/* ── Wave section dividers ───────────────────────────────── */
.section-wave {
  display: block;
  line-height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

.section-wave svg {
  width: 100%;
  height: 100px;
  display: block;
}

/* Each wave sits between its two sections */
.section-wave-hero-why {
  background: var(--black);
  margin-top: -4px;
}

.section-wave-why-courses {
  background: var(--white);
  margin-top: -4px;
}

.section-wave-courses-about {
  background: #f0f0f0;
  margin-top: -4px;
}

.section-wave-about-channels {
  background: var(--black);
  margin-top: -4px;
}

/* Sections get scroll-margin-top so anchors clear the navbar */
#why, #courses, #about, #channels {
  scroll-margin-top: 72px;
}

/* ============================================================
   SECTION: چرایی؟
   ============================================================ */
#why {
  background: linear-gradient(180deg, var(--white) 0%, #fafafa 50%, var(--white) 100%);
  padding: 100px 0 120px;
  position: relative;
  overflow: hidden;
}

/* Subtle mesh/grid pattern for depth */
.why-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 800px 600px at 85% 20%, rgba(46,134,222,0.04) 0%, transparent 55%),
    radial-gradient(ellipse 600px 500px at 15% 80%, rgba(46,134,222,0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.why-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.why-header {
  text-align: center;
  margin-bottom: 56px;
}

.why-header .section-title {
  color: var(--text-dark);
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.2;
  margin-bottom: 16px;
}

.why-header .blue-bar {
  margin: 0 auto 20px;
}

.why-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  font-weight: 400;
}

.why-content {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.why-block {
  margin-bottom: 0;
}

.why-block p,
.why-manifesto-intro {
  font-size: 1.08rem;
  line-height: 2.1;
  color: var(--text-dark);
  margin-bottom: 0;
}

.why-block-intro {
  padding: 32px 0 36px;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.why-block-intro p {
  font-size: 1.1rem;
  line-height: 2.15;
  font-weight: 450;
}

.why-block-intro p strong,
.why-content strong {
  color: var(--blue);
  font-weight: 700;
}

.why-block:not(.why-block-intro) {
  padding: 36px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.why-manifesto {
  padding: 36px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.why-manifesto-intro {
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.why-manifesto-list {
  margin: 0;
  padding-right: 24px;
  list-style: decimal;
}

.why-manifesto-list li {
  font-size: 1.02rem;
  line-height: 2;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.why-manifesto-list li:last-child {
  margin-bottom: 0;
}

.why-signature {
  margin-top: 48px;
  text-align: left;
}

.why-signature-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

.why-signature-date {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Refined reveal timing for چرایی blocks */
#why .reveal {
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

#why .reveal-delay-1 { transition-delay: 0.08s; }
#why .reveal-delay-2 { transition-delay: 0.2s; }
#why .reveal-delay-3 { transition-delay: 0.32s; }
#why .reveal-delay-4 { transition-delay: 0.48s; }

/* ============================================================
   SECTION: دوره‌ها
   ============================================================ */
#courses {
  background: #f0f0f0;
  padding: 70px 0 110px;
  position: relative;
}

.courses-header {
  text-align: center;
  margin-bottom: 56px;
}

.courses-header .section-title {
  color: var(--text-dark);
}

.courses-header .blue-bar {
  margin-inline: auto;
  margin-bottom: 0;
}

/* Tabs */
.courses-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 52px;
  background: rgba(0,0,0,0.06);
  border-radius: 50px;
  padding: 6px;
  width: fit-content;
  margin-inline: auto;
}

.tab-btn {
  padding: 10px 28px;
  border-radius: 50px;
  font-size: 0.92rem;
  font-weight: 600;
  font-family: var(--font);
  color: var(--gray-dark);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.tab-btn.active {
  background: var(--black);
  color: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
}

.tab-btn:hover:not(.active) {
  background: rgba(0,0,0,0.08);
}

/* Course panels */
.courses-panel {
  display: none;
}

.courses-panel.active {
  display: block;
}

/* Cards grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

/* ── Course Card (Live) ──────────────────────────────────── */
.course-card {
  background: var(--white-pure);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
  text-decoration: none;
  color: inherit;
  border: 2px solid transparent;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(46,134,222,0.2);
}

.course-card-top {
  background: var(--black);
  padding: 28px 24px 22px;
  position: relative;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.course-card-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.badge-type-live    { background: rgba(46,134,222,0.18); color: var(--blue-light); border: 1px solid rgba(46,134,222,0.3); }
.badge-type-recorded { background: rgba(100,100,100,0.2); color: #aaa; border: 1px solid rgba(255,255,255,0.1); }

.badge-status-open    { background: rgba(34,197,94,0.15); color: #4ade80; border: 1px solid rgba(34,197,94,0.3); }
.badge-status-closed  { background: rgba(239,68,68,0.15); color: #f87171; border: 1px solid rgba(239,68,68,0.25); }
.badge-status-full    { background: rgba(239,68,68,0.15); color: #f87171; border: 1px solid rgba(239,68,68,0.25); }
.badge-status-soon    { background: rgba(251,191,36,0.15); color: #fbbf24; border: 1px solid rgba(251,191,36,0.25); }
.badge-status-unknown { background: rgba(120,120,120,0.2); color: #999; border: 1px solid rgba(255,255,255,0.1); }

.course-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.5;
}

.course-card-level {
  font-size: 0.8rem;
  color: rgba(245,245,245,0.45);
  margin-top: 6px;
}

.course-card-body {
  padding: 22px 24px 18px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
  flex: 1;
  margin-bottom: 18px;
}

.course-card-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--gray-dark);
}

.meta-item svg {
  flex-shrink: 0;
  color: var(--blue);
}

.course-card-footer {
  padding: 16px 24px 22px;
  border-top: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.price-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.price-original {
  font-size: 0.78rem;
  color: var(--gray-mid);
  text-decoration: line-through;
}

.price-current {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-dark);
}

.price-current.free {
  color: #16a34a;
}

.card-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--black);
  color: var(--white);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font);
  transition: background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.card-cta-btn:hover {
  background: var(--blue);
  box-shadow: 0 4px 16px rgba(46,134,222,0.3);
}

/* ── Recorded course card variant ───────────────────────── */
.course-card-recorded .course-card-top {
  background: #1c1c1c;
}

.video-count-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: rgba(245,245,245,0.5);
  margin-top: 10px;
}

/* ── Tags ────────────────────────────────────────────────── */
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.tag {
  padding: 3px 10px;
  background: var(--gray-light);
  color: var(--gray-dark);
  border-radius: 50px;
  font-size: 0.73rem;
  font-weight: 600;
}

/* ── Seats bar ───────────────────────────────────────────── */
.seats-bar-wrap {
  margin-top: 4px;
}

.seats-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.seats-bar {
  height: 5px;
  background: var(--gray-light);
  border-radius: 3px;
  overflow: hidden;
}

.seats-bar-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 3px;
  transition: width 1s ease;
}

/* ============================================================
   SECTION: درباره من
   ============================================================ */
#about {
  background: var(--black);
  padding: 70px 0 110px;
  overflow: hidden;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 72px;
  align-items: center;
}

.about-photo-col {
  position: relative;
}

.about-photo-wrap {
  position: relative;
}

.about-photo-wrap img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: 0;
  /* Fade all four edges into the black background.
     Left edge is more aggressive (it faces the text column). */
  -webkit-mask-image:
    linear-gradient(to right, transparent 0%, black 28%, black 90%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 8%, black 88%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image:
    linear-gradient(to right, transparent 0%, black 28%, black 90%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 8%, black 88%, transparent 100%);
  mask-composite: intersect;
  filter: brightness(0.92) contrast(1.04);
}


.about-text-col {
  padding-right: 8px;
}

.about-text-col .section-title {
  color: var(--white);
  margin-bottom: 6px;
}

.about-text-col .blue-bar {
  margin-bottom: 24px;
}

.about-role {
  font-size: 0.9rem;
  color: var(--blue-light);
  font-weight: 500;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}

.about-bio p {
  font-size: 0.97rem;
  line-height: 2;
  color: rgba(245,245,245,0.75);
  margin-bottom: 18px;
}

.about-bio p:last-child {
  margin-bottom: 0;
}

.about-profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.profile-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 1px solid rgba(46, 134, 222, 0.35);
  color: rgba(245, 245, 245, 0.75);
  background: rgba(46, 134, 222, 0.06);
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
  white-space: nowrap;
}

.profile-link-btn:hover {
  background: rgba(46, 134, 222, 0.15);
  border-color: rgba(46, 134, 222, 0.65);
  color: var(--blue-light);
  transform: translateY(-1px);
}

.profile-link-btn svg {
  flex-shrink: 0;
  opacity: 0.8;
}

.about-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.keyword-chip {
  padding: 6px 14px;
  border: 1px solid rgba(46,134,222,0.3);
  color: rgba(245,245,245,0.6);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 500;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.keyword-chip:hover {
  border-color: var(--blue);
  color: var(--blue-light);
  background: rgba(46,134,222,0.07);
}

/* ============================================================
   SECTION: کانال‌ها
   ============================================================ */
#channels {
  background: var(--white);
  padding: 70px 0 110px;
}

.channels-header {
  text-align: center;
  margin-bottom: 60px;
}

.channels-header .section-title {
  color: var(--text-dark);
}

.channels-header .blue-bar {
  margin-inline: auto;
}

.channels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  max-width: 800px;
  margin: 0 auto;
}

.channel-card {
  background: var(--white-pure);
  border-radius: var(--radius);
  padding: 44px 36px;
  text-align: center;
  border: 1px solid rgba(0,0,0,0.07);
  box-shadow: 0 2px 20px rgba(0,0,0,0.05);
  transition: transform 0.35s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.35s cubic-bezier(0.22,1,0.36,1),
              border-color 0.35s cubic-bezier(0.22,1,0.36,1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.channel-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 48px rgba(0,0,0,0.1);
  border-color: rgba(46,134,222,0.2);
}

.channel-icon {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: rgba(13,13,13,0.05);
  color: var(--text-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.3s ease,
              color 0.3s ease;
}

.channel-card:hover .channel-icon {
  transform: translateY(-3px) scale(1.07);
  background: rgba(46,134,222,0.1);
  color: var(--blue);
}

.channel-icon.youtube,
.channel-icon.telegram {
  background: rgba(13,13,13,0.05);
  color: var(--text-dark);
}

.channel-card:hover .channel-icon.youtube,
.channel-card:hover .channel-icon.telegram {
  background: rgba(46,134,222,0.1);
  color: var(--blue);
}

.channel-icon svg {
  width: 30px;
  height: 30px;
}

.channel-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 28px;
  letter-spacing: 0.01em;
}

.channel-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 28px;
  flex: 1;
}

.channel-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--font);
  background: transparent;
  color: var(--text-dark);
  border: 1.5px solid rgba(13,13,13,0.2);
  transition: background 0.25s ease,
              border-color 0.25s ease,
              color 0.25s ease,
              transform 0.25s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.25s ease;
}

.channel-btn:hover,
.channel-btn.youtube-btn:hover,
.channel-btn.telegram-btn:hover {
  background: var(--text-dark);
  color: var(--white-pure);
  border-color: var(--text-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(13,13,13,0.18);
}

.channel-btn.youtube-btn,
.channel-btn.telegram-btn {
  background: transparent;
  color: var(--text-dark);
  border: 1.5px solid rgba(13,13,13,0.2);
  box-shadow: none;
}

/* ============================================================
   FOOTER
   ============================================================ */
#footer {
  background: var(--black-soft);
  padding: 60px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  position: relative;
}

#footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue), rgba(91,163,232,0.5), transparent);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo img {
  height: 36px;
  width: auto;
}

.footer-logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}

.footer-tagline {
  font-size: 0.85rem;
  color: rgba(245,245,245,0.35);
  line-height: 1.8;
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgba(245,245,245,0.4);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(245,245,245,0.5);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(245,245,245,0.28);
}

.footer-made-with {
  font-size: 0.78rem;
  color: rgba(245,245,245,0.25);
}

/* Footer contact links (ارتباط column) */
.footer-contact-links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(245,245,245,0.55);
  text-decoration: none;
  transition: color 0.2s;
  line-height: 1.4;
  word-break: break-all;
}

.footer-contact-link svg {
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.footer-contact-link:hover {
  color: var(--white);
}

.footer-contact-link:hover svg {
  opacity: 1;
}

/* ============================================================
   COURSE DETAIL PAGE (course.html)
   ============================================================ */
.course-page-body {
  background: var(--white);
  min-height: 100vh;
}

/* Course hero banner */
.course-hero {
  background: var(--black);
  padding: 120px 0 72px;
  position: relative;
  overflow: hidden;
}


.course-hero-inner {
  position: relative;
  z-index: 2;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(245,245,245,0.55);
  font-size: 0.875rem;
  font-family: var(--font);
  margin-bottom: 32px;
  transition: color 0.2s;
}

.back-btn:hover {
  color: var(--white);
}

.course-hero-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.course-hero-title {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.3;
  margin-bottom: 16px;
  max-width: 780px;
}

.course-hero-subtitle {
  font-size: 1rem;
  color: rgba(245,245,245,0.55);
  line-height: 1.8;
  max-width: 640px;
  margin-bottom: 32px;
}

.course-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(245,245,245,0.6);
}

.hero-meta-item svg {
  color: var(--blue-light);
  flex-shrink: 0;
}

/* Course content layout */
.course-content {
  padding: 72px 0 80px;
}

.course-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 52px;
  align-items: start;
}

/* Sticky sidebar */
.course-sidebar {
  position: sticky;
  top: 90px;
}

.sidebar-card {
  background: var(--white-pure);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(0,0,0,0.1);
  border: 1px solid var(--gray-light);
}

.sidebar-card-top {
  background: var(--black);
  padding: 28px 24px 24px;
}

.sidebar-price-block {
  margin-bottom: 20px;
}

.sidebar-original-price {
  font-size: 0.85rem;
  color: rgba(245,245,245,0.35);
  text-decoration: line-through;
  margin-bottom: 4px;
}

.sidebar-price {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--white);
}

.sidebar-price.free {
  color: #4ade80;
}

.sidebar-price-note {
  font-size: 0.75rem;
  color: rgba(245,245,245,0.4);
  margin-top: 4px;
  line-height: 1.6;
}

.sidebar-cohort-status {
  margin-top: 16px;
}

.cohort-status-label {
  font-size: 0.75rem;
  color: rgba(245,245,245,0.4);
  margin-bottom: 6px;
}

.cohort-status-value {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 50px;
}

.cohort-status-open    { background: rgba(34,197,94,0.15); color: #4ade80; }
.cohort-status-closed  { background: rgba(239,68,68,0.15); color: #f87171; }
.cohort-status-full    { background: rgba(239,68,68,0.15); color: #f87171; }
.cohort-status-soon    { background: rgba(251,191,36,0.15); color: #fbbf24; }
.cohort-status-unknown { background: rgba(120,120,120,0.2); color: #999; }

.sidebar-card-body {
  padding: 24px;
}

.sidebar-meta-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.sidebar-meta-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-dark);
}

.sidebar-meta-item svg {
  color: var(--blue);
  flex-shrink: 0;
  margin-top: 2px;
}

.sidebar-meta-label {
  font-weight: 600;
  margin-bottom: 2px;
}

.sidebar-meta-val {
  color: var(--text-muted);
}

.sidebar-enroll-btn {
  width: 100%;
  padding: 14px;
  background: var(--blue);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.97rem;
  font-weight: 700;
  font-family: var(--font);
  transition: background var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(46,134,222,0.3);
}

.sidebar-enroll-btn:hover:not(:disabled) {
  background: var(--blue-dark);
  box-shadow: 0 8px 30px rgba(46,134,222,0.45);
}

.sidebar-enroll-btn:disabled {
  background: var(--gray-mid);
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.7;
}

.sidebar-enroll-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
  line-height: 1.6;
}

/* Course sections */
.course-section {
  margin-bottom: 52px;
}

.course-section-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--gray-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.course-section-title svg {
  color: var(--blue);
}

/* About section free text */
.course-about-text {
  font-size: 0.97rem;
  line-height: 2;
  color: var(--text-dark);
}

/* Target audience cards */
.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.audience-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px;
  background: var(--gray-light);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-dark);
}

.audience-item::before {
  content: '✓';
  color: var(--blue);
  font-weight: 800;
  flex-shrink: 0;
}

/* Prerequisites */
.prereq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prereq-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.7;
}

.prereq-item::before {
  content: '◦';
  color: var(--blue);
  font-size: 1.1rem;
  flex-shrink: 0;
  line-height: 1.5;
}

/* Syllabus accordion */
.syllabus-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.syllabus-item {
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.syllabus-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  background: var(--white-pure);
  transition: background 0.2s;
  gap: 12px;
}

.syllabus-header:hover {
  background: var(--gray-light);
}

.syllabus-week-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue);
  background: rgba(46,134,222,0.1);
  padding: 3px 9px;
  border-radius: 50px;
  white-space: nowrap;
}

.syllabus-week-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-dark);
  flex: 1;
}

.syllabus-chevron {
  width: 18px;
  height: 18px;
  border-right: 2px solid var(--gray-mid);
  border-bottom: 2px solid var(--gray-mid);
  transform: rotate(45deg);
  transition: transform 0.25s;
  flex-shrink: 0;
}

.syllabus-item.open .syllabus-chevron {
  transform: rotate(-135deg);
}

.syllabus-body {
  display: none;
  padding: 0 20px 16px 20px;
  background: var(--white-pure);
}

.syllabus-item.open .syllabus-body {
  display: block;
}

.syllabus-topics {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
}

.syllabus-topic {
  font-size: 0.84rem;
  color: var(--text-muted);
  padding-right: 14px;
  position: relative;
  line-height: 1.6;
}

.syllabus-topic::before {
  content: '–';
  position: absolute;
  right: 0;
  color: var(--blue);
}

/* Pricing inline (replaces old dark pricing-block) */
.pricing-inline {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.pricing-inline-amount {
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-dark);
}

.pricing-inline-amount.free {
  color: #16a34a;
}

.pricing-inline-original {
  font-size: 1rem;
  color: var(--gray-mid);
  text-decoration: line-through;
}

.pricing-plain-note {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.9;
  max-width: 620px;
}

/* ── Video player (recorded courses) ─────────────────────── */
.video-player-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 16:9 responsive iframe */
.video-player-stage {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  box-shadow: 0 8px 40px rgba(0,0,0,0.18);
}

.video-player-stage iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius);
}

/* No videos yet */
.video-player-empty {
  width: 100%;
  padding-top: 56.25%;
  position: relative;
  border-radius: var(--radius);
  background: var(--gray-light);
  border: 2px dashed var(--gray-mid);
}

.video-player-empty svg,
.video-player-empty p {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.video-player-empty svg {
  top: calc(50% - 36px);
  color: var(--gray-mid);
}

.video-player-empty p {
  top: calc(50% + 20px);
  font-size: 0.9rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Playlist */
.video-playlist {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--white-pure);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  user-select: none;
}

.playlist-item[data-youtube-id] {
  cursor: pointer;
}

.playlist-item[data-youtube-id]:hover {
  border-color: var(--blue);
  box-shadow: 0 2px 10px var(--blue-glow);
}

.playlist-item.active {
  border-color: var(--blue);
  background: rgba(46,134,222,0.05);
}

.playlist-item.placeholder {
  cursor: default;
  opacity: 0.65;
}

.playlist-num {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  min-width: 20px;
  text-align: center;
}

.playlist-play-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(46,134,222,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.playlist-item.active .playlist-play-icon {
  background: var(--blue);
}

.playlist-item.active .playlist-play-icon svg {
  color: var(--white);
}

.playlist-play-icon svg {
  color: var(--blue);
}

.playlist-item.placeholder .playlist-play-icon {
  background: var(--gray-light);
}

.playlist-item.placeholder .playlist-play-icon svg {
  color: var(--gray-mid);
}

.playlist-info {
  flex: 1;
  min-width: 0;
}

.playlist-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-item.active .playlist-title {
  color: var(--blue);
}

.playlist-duration {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.playlist-soon-badge {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--gray-light);
  padding: 3px 8px;
  border-radius: 50px;
  white-space: nowrap;
}

/* ── Course materials ─────────────────────────────────────── */
.materials-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.material-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--white-pure);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  color: var(--text-dark);
}

a.material-item {
  cursor: pointer;
}

a.material-item:hover {
  border-color: var(--blue);
  box-shadow: 0 2px 10px var(--blue-glow);
}

.material-item.placeholder {
  opacity: 0.6;
}

.material-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(46,134,222,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.material-icon svg {
  color: var(--blue);
}

.material-info {
  flex: 1;
}

.material-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.material-type {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.material-arrow svg {
  color: var(--blue);
}

.material-soon {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--gray-light);
  padding: 3px 10px;
  border-radius: 50px;
  white-space: nowrap;
}

/* ── SIGN-UP FORM ─────────────────────────────────────────── */
#signup-section {
  margin-top: 60px;
  padding-top: 56px;
  border-top: 2px solid var(--gray-light);
}

.signup-intro {
  margin-bottom: 28px;
}

.signup-intro h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.signup-intro p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.9;
  max-width: 600px;
}

.signup-notice {
  padding: 14px 20px;
  background: rgba(46,134,222,0.06);
  border-right: 4px solid var(--blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 28px;
}

.signup-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 680px;
}

/* ── Multi-step Wizard ───────────────────────────────────── */
.form-wizard {
  max-width: 680px;
}

/* Progress dots + line */
.wizard-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  margin-bottom: 36px;
  padding: 0 4px;
}

.wizard-progress-line {
  position: absolute;
  top: 18px;
  right: 28px;
  left: 28px;
  height: 2px;
  background: var(--gray-light);
  z-index: 0;
}

.wizard-progress-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  width: 0%;
}

.wizard-step-dot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: default;
  position: relative;
  z-index: 1;
}

.wizard-step-dot span {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gray-light);
  color: var(--gray-mid);
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, color 0.3s, box-shadow 0.3s;
  font-family: var(--font);
}

.wizard-step-dot.active span {
  background: var(--blue);
  color: white;
  box-shadow: 0 0 0 4px rgba(46,134,222,0.18);
}

.wizard-step-dot.done span {
  background: var(--blue-dark);
  color: white;
}

.wizard-step-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.3s;
}

.wizard-step-dot.active .wizard-step-label {
  color: var(--blue);
}

/* Panels */
.wizard-panels {
  position: relative;
  overflow: hidden;
  min-height: 300px;
}

.wizard-panel {
  display: none;
  animation: wizardFadeIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.wizard-panel.active {
  display: block;
}

@keyframes wizardFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.wizard-panel-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gray-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.wizard-panel-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--blue);
  border-radius: 2px;
}

.signup-form-inner {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* Navigation */
.wizard-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-light);
  gap: 12px;
}

.wizard-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  background: var(--black);
  color: var(--white);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  border: none;
  cursor: pointer;
}

.wizard-nav-btn:hover {
  background: var(--blue);
  box-shadow: 0 4px 16px rgba(46,134,222,0.3);
  transform: translateY(-1px);
}

.wizard-prev {
  background: var(--white-pure);
  color: var(--text-dark);
  border: 1.5px solid var(--gray-light);
}

.wizard-prev:hover {
  background: var(--gray-light);
  box-shadow: none;
  transform: none;
}

.wizard-step-counter {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Submit block */
.wizard-submit-block {
  margin-top: 8px;
}

.wizard-submit-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: center;
  line-height: 1.7;
}

/* Error states */
.form-input-error {
  border-color: #ef4444 !important;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.12) !important;
}

.radio-error {
  padding: 12px;
  border-radius: var(--radius-sm);
  background: rgba(239,68,68,0.04);
  border: 1px solid rgba(239,68,68,0.2);
}

.checkbox-error .checkbox-item-label {
  color: #ef4444;
}

.field-error-msg {
  display: block;
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 4px;
  font-weight: 500;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group label .req {
  color: var(--blue);
  margin-right: 3px;
}

.form-input,
.form-select,
.form-textarea {
  padding: 12px 16px;
  border: 1.5px solid #ddd;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font);
  color: var(--text-dark);
  background: var(--white-pure);
  transition: border-color 0.2s, box-shadow 0.2s;
  direction: rtl;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46,134,222,0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.8;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 14px center;
}

.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-item,
.checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
}

.radio-item input,
.checkbox-item input {
  accent-color: var(--blue);
  width: 17px;
  height: 17px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
}

.radio-item-label,
.checkbox-item-label {
  font-size: 0.875rem;
  color: var(--text-dark);
  line-height: 1.7;
}

.radio-item-note,
.checkbox-item-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 3px;
  line-height: 1.6;
}

.scholarship-warning {
  display: none;
  padding: 14px 18px;
  background: rgba(251,191,36,0.08);
  border: 1px solid rgba(251,191,36,0.3);
  border-radius: var(--radius-sm);
  font-size: 0.83rem;
  color: #92400e;
  line-height: 1.8;
}

.form-submit-btn {
  padding: 15px 40px;
  background: var(--blue);
  color: white;
  border-radius: 50px;
  font-size: 0.97rem;
  font-weight: 700;
  font-family: var(--font);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(46,134,222,0.3);
  align-self: flex-start;
  width: 100%;
}

.form-submit-btn:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(46,134,222,0.45);
}

.form-success {
  display: none;
  padding: 32px;
  background: rgba(34,197,94,0.06);
  border: 2px solid rgba(34,197,94,0.25);
  border-radius: var(--radius);
  text-align: center;
}

.form-success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(34,197,94,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.form-success-icon svg {
  color: #16a34a;
}

.form-success h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.form-success p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.9;
}

/* Submission error banner */
.submit-error-banner {
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: 0.9rem;
  line-height: 1.8;
  padding: 18px 24px;
  margin-bottom: 24px;
  text-align: center;
}

.submit-error-banner a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: underline;
}

/* Closed enrollment notice */
.enrollment-closed-notice {
  padding: 32px;
  background: var(--gray-light);
  border-radius: var(--radius);
  text-align: center;
}

.enrollment-closed-notice h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.enrollment-closed-notice p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.9;
}

/* No courses placeholder */
.no-courses-msg {
  text-align: center;
  color: var(--gray-mid);
  font-size: 0.95rem;
  padding: 56px 0;
  grid-column: 1 / -1;
}

/* ── Navbar on light pages ────────────────────────────────── */
.navbar-light {
  background: rgba(13, 13, 13, 0.92) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  padding: 12px 0 !important;
}

.navbar-light .nav-logo {
  opacity: 1 !important;
  transform: translateY(0) !important;
  pointer-events: auto !important;
}

/* ============================================================
   MOBILE MENU
   ============================================================ */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 36px;
}

.mobile-menu.open {
  display: flex;
  animation: fadeUp 0.3s ease;
}

.mobile-menu a {
  font-size: 1.4rem;
  font-weight: 700;
  color: rgba(245,245,245,0.8);
  transition: color 0.2s;
}

.mobile-menu a:hover {
  color: var(--white);
}

.mobile-close {
  position: absolute;
  top: 24px;
  left: 24px;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 8px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .course-layout {
    grid-template-columns: 1fr;
  }

  .course-sidebar {
    position: static;
    order: -1;
  }

  .sidebar-card {
    max-width: 500px;
    margin: 0 auto;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .why-inner {
    max-width: 100%;
    padding: 0 20px;
  }

  .why-header {
    margin-bottom: 40px;
  }

  .why-block-intro,
  .why-block:not(.why-block-intro) {
    padding: 24px 0;
  }

  .why-manifesto {
    padding: 24px 0;
  }

  .why-manifesto-list {
    padding-right: 24px;
  }

  .why-signature {
    margin-top: 36px;
  }


  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-photo-wrap img {
    /* On mobile, photo is full-width — fade left/right edges and bottom more gently */
    -webkit-mask-image:
      linear-gradient(to right, transparent 0%, black 12%, black 88%, transparent 100%),
      linear-gradient(to bottom, transparent 0%, black 6%, black 80%, transparent 100%);
    -webkit-mask-composite: source-in;
    mask-image:
      linear-gradient(to right, transparent 0%, black 12%, black 88%, transparent 100%),
      linear-gradient(to bottom, transparent 0%, black 6%, black 80%, transparent 100%);
    mask-composite: intersect;
  }

  .channels-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .audience-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .course-hero {
    padding: 100px 0 52px;
  }
}

@media (max-width: 480px) {
  .courses-tabs {
    width: 100%;
    flex-direction: row;
  }

  .tab-btn {
    flex: 1;
    text-align: center;
    padding: 10px 14px;
  }

  .channel-card {
    padding: 32px 24px;
  }

  #channels {
    padding: 60px 0 80px;
  }

  .wizard-progress {
    gap: 0;
  }

  .wizard-step-label {
    display: none;
  }

  .wizard-step-dot span {
    width: 30px;
    height: 30px;
    font-size: 0.75rem;
  }

  .wizard-progress-line {
    top: 15px;
  }

  .wizard-nav-btn {
    padding: 10px 18px;
    font-size: 0.85rem;
  }
}

/* ============================================================
   NAVBAR — Certificate Button
   ============================================================ */
.nav-cert-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  border-radius: 50px;
  border: 1.5px solid rgba(46, 134, 222, 0.45);
  color: var(--blue-light) !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition) !important;
}

.nav-cert-btn:hover,
.nav-cert-btn.active {
  background: rgba(46, 134, 222, 0.12);
  border-color: var(--blue);
  color: var(--white) !important;
  box-shadow: 0 0 14px rgba(46, 134, 222, 0.2);
}

.nav-cert-btn::after {
  display: none !important;
}

/* Mobile menu cert link */
.mobile-cert-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  border-radius: 50px;
  border: 1.5px solid rgba(46, 134, 222, 0.4);
  color: var(--blue-light) !important;
  font-size: 1.1rem !important;
  font-weight: 700 !important;
}

/* ============================================================
   CERTIFICATE PAGE — Hero
   ============================================================ */
.cert-hero {
  background: var(--black);
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cert-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 500px at 30% 50%, rgba(46, 134, 222, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 500px 400px at 80% 20%, rgba(91, 163, 232, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.cert-hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}

.cert-hero-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(46, 134, 222, 0.12);
  border: 1.5px solid rgba(46, 134, 222, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  color: var(--blue-light);
  animation: logoFloat 5s ease-in-out infinite;
}

.cert-hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.25;
}

.cert-hero-subtitle {
  font-size: 1rem;
  color: rgba(245, 245, 245, 0.55);
  line-height: 1.9;
  max-width: 520px;
  margin: 0 auto;
}

/* ============================================================
   CERTIFICATE PAGE — Search Section
   ============================================================ */
.cert-section {
  padding: 64px 0 80px;
  background: var(--white);
}

.cert-search-card {
  background: var(--white-pure);
  border-radius: var(--radius);
  padding: 44px 48px;
  box-shadow: 0 6px 40px rgba(0, 0, 0, 0.09);
  border: 1px solid var(--gray-light);
  max-width: 680px;
  margin: 0 auto 48px;
}

.cert-search-header {
  text-align: center;
  margin-bottom: 32px;
}

.cert-search-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.cert-search-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.cert-search-hint code {
  font-family: 'Courier New', Courier, monospace;
  background: var(--gray-light);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--text-dark);
  direction: ltr;
  display: inline-block;
}

.cert-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cert-input-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
}

.cert-input-row {
  display: flex;
  gap: 10px;
}

.cert-input {
  flex: 1;
  padding: 14px 18px;
  border: 1.5px solid #ddd;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-dark);
  background: var(--white-pure);
  transition: border-color 0.2s, box-shadow 0.2s;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.cert-input::placeholder {
  font-family: var(--font);
  text-transform: none;
  letter-spacing: 0;
  color: #aaa;
  font-size: 0.9rem;
}

.cert-input:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46, 134, 222, 0.12);
}

.cert-input.cert-input-invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.cert-input-error {
  font-size: 0.82rem;
  color: #ef4444;
  font-weight: 500;
  min-height: 18px;
}

.cert-input-error[hidden] {
  display: none;
}

/* Submit Button */
.cert-submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--blue);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font);
  white-space: nowrap;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 4px 18px rgba(46, 134, 222, 0.3);
  min-width: 96px;
  position: relative;
}

.cert-submit-btn:hover:not(:disabled) {
  background: var(--blue-dark);
  box-shadow: 0 8px 28px rgba(46, 134, 222, 0.42);
  transform: translateY(-1px);
}

.cert-submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.cert-submit-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: white;
  border-radius: 50%;
  animation: certSpin 0.7s linear infinite;
}

.cert-submit-btn.loading .cert-submit-text {
  display: none;
}

.cert-submit-btn.loading .cert-submit-spinner {
  display: block;
}

@keyframes certSpin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   CERTIFICATE PAGE — Results
   ============================================================ */
.cert-result {
  max-width: 860px;
  margin: 0 auto;
}

.cert-result[hidden] {
  display: none;
}

/* Not Found */
.cert-not-found {
  background: var(--white-pure);
  border-radius: var(--radius);
  padding: 52px 48px;
  text-align: center;
  box-shadow: 0 6px 40px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--gray-light);
}

.cert-result-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.cert-result-icon--error {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.cert-result-icon--success {
  background: rgba(34, 197, 94, 0.12);
  color: #16a34a;
}

.cert-result-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.cert-result-msg {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 12px;
}

.cert-result-queried {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.cert-result-queried strong {
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-dark);
  letter-spacing: 0.04em;
}

.cert-retry-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  background: var(--black);
  color: var(--white);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  transition: background var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: none;
}

.cert-retry-btn:hover {
  background: var(--blue);
  box-shadow: 0 4px 16px rgba(46, 134, 222, 0.3);
}

.cert-retry-btn--secondary {
  background: var(--white-pure);
  color: var(--text-dark);
  border: 1.5px solid var(--gray-light);
}

.cert-retry-btn--secondary:hover {
  background: var(--gray-light);
  box-shadow: none;
}

/* Found */
.cert-found {
  background: var(--white-pure);
  border-radius: var(--radius);
  box-shadow: 0 6px 40px rgba(0, 0, 0, 0.09);
  border: 1px solid rgba(34, 197, 94, 0.25);
  overflow: hidden;
}

.cert-found-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 36px;
  border-bottom: 1px solid var(--gray-light);
  flex-wrap: wrap;
}

.cert-found-info {
  flex: 1;
  min-width: 0;
}

.cert-found-title {
  margin-bottom: 4px;
  font-size: 1.15rem;
}

.cert-found-id-display {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.cert-found-id-display strong {
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-dark);
  letter-spacing: 0.04em;
}

.cert-found-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.cert-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  background: var(--blue);
  color: white !important;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 3px 14px rgba(46, 134, 222, 0.28);
  text-decoration: none;
  white-space: nowrap;
}

.cert-download-btn:hover {
  background: var(--blue-dark);
  box-shadow: 0 6px 22px rgba(46, 134, 222, 0.4);
  transform: translateY(-1px);
}

/* PDF Viewer */
.cert-pdf-wrap {
  position: relative;
  width: 100%;
  background: #1a1a1a;
  min-height: 400px;
}

.cert-pdf-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px;
  color: rgba(245, 245, 245, 0.5);
  font-size: 0.875rem;
}

.cert-pdf-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(46, 134, 222, 0.2);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: certSpin 0.8s linear infinite;
}

.cert-pdf-embed {
  display: block;
  width: 100%;
  height: 720px;
  border: none;
}

.cert-pdf-embed[hidden] {
  display: none;
}

.cert-pdf-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 60px;
  color: rgba(245, 245, 245, 0.5);
  text-align: center;
}

.cert-pdf-fallback[hidden] {
  display: none;
}

.cert-pdf-fallback p {
  font-size: 0.9rem;
  max-width: 360px;
}

/* Share row */
.cert-share-wrap {
  padding: 20px 36px;
  background: rgba(46, 134, 222, 0.04);
  border-top: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.cert-share-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.cert-share-row {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.cert-share-input {
  flex: 1;
  padding: 9px 12px;
  border: 1.5px solid var(--gray-light);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-muted);
  background: var(--white-pure);
  min-width: 0;
  direction: ltr;
}

.cert-share-input:focus {
  outline: none;
  border-color: var(--blue);
}

.cert-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--black);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font);
  white-space: nowrap;
  transition: background var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
}

.cert-copy-btn:hover,
.cert-copy-btn.copied {
  background: var(--blue);
  box-shadow: 0 3px 12px rgba(46, 134, 222, 0.28);
}

/* ============================================================
   CERTIFICATE PAGE — Info Section
   ============================================================ */
.cert-info-section {
  background: #f0f0f0;
  padding: 64px 0 80px;
}

.cert-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 860px;
  margin: 0 auto;
}

.cert-info-card {
  background: var(--white-pure);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.cert-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.cert-info-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(46, 134, 222, 0.08);
  border: 1px solid rgba(46, 134, 222, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--blue);
}

.cert-info-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.cert-info-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ============================================================
   CERTIFICATE PAGE — Responsive
   ============================================================ */
@media (max-width: 768px) {
  .cert-search-card {
    padding: 32px 24px;
  }

  .cert-input-row {
    flex-direction: column;
  }

  .cert-submit-btn {
    width: 100%;
  }

  .cert-not-found {
    padding: 40px 28px;
  }

  .cert-found-header {
    padding: 20px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .cert-result-icon {
    align-self: center;
    margin: 0 auto;
  }

  .cert-found-info {
    text-align: center;
    width: 100%;
  }

  .cert-found-actions {
    width: 100%;
    justify-content: center;
  }

  .cert-share-wrap {
    padding: 18px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cert-share-row {
    width: 100%;
  }

  .cert-pdf-embed {
    height: 480px;
  }

  .cert-info-grid {
    grid-template-columns: 1fr;
  }

  .cert-hero {
    padding: 110px 0 60px;
  }
}

@media (max-width: 480px) {
  .cert-pdf-embed {
    height: 380px;
  }

  .cert-download-btn {
    width: 100%;
    justify-content: center;
  }

  .cert-retry-btn {
    width: 100%;
    justify-content: center;
  }
}