@import url("https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700,900&f[]=cabinet-grotesk@500,700,800&display=swap");

:root {
    --primary: #1d4ed8;
    --secondary: #6c757d;
    --light: #fbfdff;
    --glass: rgba(255, 255, 255, 0.1);
    --font-body: 'Satoshi', Inter, sans-serif;
    --font-display: 'Cabinet Grotesk', 'Satoshi', sans-serif;
    --nav-blue: #1d4ed8;
    --nav-blue-hover: #1e40af;
    --nav-text: #111827;
    --nav-muted: #4b5563;
    --nav-border: #d6deea;
    --nav-shadow: 0 8px 24px rgba(17, 24, 39, 0.07);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-body);
}

body {
    background:
        linear-gradient(180deg, #ffffff 0%, #f8fafc 44%, #ffffff 100%),
        radial-gradient(circle at 18% 8%, rgba(29, 78, 216, 0.08), transparent 24%),
        var(--light);
    color: #111827;
    overflow-x: hidden;
}

.shell {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
}

header {
    position: sticky;
    top: 0.75rem;
    z-index: 60;
    width: min(1220px, calc(100% - 1rem));
    margin: 0.75rem auto 0;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--nav-border);
    border-radius: 1rem;
    box-shadow: var(--nav-shadow);
    backdrop-filter: blur(14px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 1rem;
    flex-wrap: wrap;
    font-family: var(--font-body);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    color: var(--nav-text);
    font-weight: 900;
    letter-spacing: 0;
    text-decoration: none;
}

.brand > div:not(.logo) {
    font-family: var(--font-display);
    font-size: 1.02rem;
    font-weight: 900;
    line-height: 1.15;
}

.logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: #fff;
    border: 1px solid var(--nav-border);
    color: var(--nav-blue);
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 900;
    flex-shrink: 0;
}

.brand-sub {
    display: block;
    font-family: var(--font-body);
    color: var(--nav-muted);
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.35;
}

.menu {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.menu a {
    position: relative;
    padding: 0.62rem 0.85rem;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: #1f2937;
    font-family: var(--font-body);
    font-size: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.menu a:hover {
    color: var(--nav-blue);
    background: #eff6ff;
}

.menu a.active-page {
    color: var(--nav-blue);
    background: linear-gradient(180deg, #eff6ff, #eaf2ff);
    box-shadow: 0 8px 18px rgba(29, 78, 216, 0.08);
    font-weight: 600;
}

.menu .cta-mini {
    background: var(--nav-blue);
    color: #fff;
    border: none;
    font-weight: 800;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
}

.menu .cta-mini:hover,
.menu .cta-mini.active-page {
    color: #fff;
    background: var(--nav-blue-hover);
    box-shadow: 0 14px 28px rgba(29, 78, 216, 0.22);
}

@media (max-width: 720px) {
    header {
        width: calc(100% - 0.6rem);
        border-radius: 0 0 1rem 1rem;
        top: 0;
        margin-top: 0;
    }

    .nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .menu {
        width: 100%;
    }

    .menu a {
        flex: 1;
        text-align: center;
    }
}

#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.18;
}

.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.glass-nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

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

.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 10%;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.8;
}

.btn-primary {
    background: var(--nav-blue);
    color: white;
    padding: 0.78rem 1.15rem;
    border-radius: 0.75rem;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    border: none;
    cursor: pointer;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.18);
    transition: box-shadow 0.2s, background-color 0.2s;
}

.btn-primary:hover {
    background: #1e40af;
    box-shadow: 0 14px 28px rgba(29, 78, 216, 0.22);
}

.btn-secondary {
    background: #fff;
    color: var(--nav-blue);
    padding: 0.78rem 1.15rem;
    border-radius: 0.75rem;
    text-decoration: none;
    border: none;
    margin-left: 0;
    cursor: pointer;
    font-weight: 800;
    box-shadow: inset 0 0 0 1px #d6deea;
    transition: background-color 0.2s, box-shadow 0.2s;
}

.btn-secondary:hover {
    background: #eff6ff;
    box-shadow: inset 0 0 0 1px rgba(29, 78, 216, 0.18), 0 10px 20px rgba(17, 24, 39, 0.06);
}

.glass-section {
    display: flex;
    justify-content: space-around;
    padding: 4rem 10%;
    background: var(--glass);
    backdrop-filter: blur(15px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-card {
    text-align: center;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary);
}

.container {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
    padding: clamp(2.2rem, 5vw, 4rem) 0 5rem;
}

.page-header {
    max-width: 760px;
    margin-bottom: 2rem;
}

.page-header h1 {
    color: #111827;
    font-size: clamp(2.4rem, 1.6rem + 3vw, 4.2rem);
    line-height: 1.05;
    margin-bottom: 0.75rem;
}

.page-header h1 span {
    color: var(--nav-blue);
}

.page-header p {
    color: #374151;
    font-size: clamp(1rem, 0.95rem + 0.3vw, 1.18rem);
    line-height: 1.6;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-auto-rows: 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.course-card {
    min-height: 330px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(243, 244, 246, 0.88));
    padding: 1.45rem;
    border-radius: 1rem;
    border: 1px solid rgba(214, 222, 234, 0.86);
    box-shadow: 0 12px 30px rgba(17, 24, 39, 0.065);
    transition: box-shadow 0.2s, border-color 0.2s, background-color 0.2s;
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto minmax(5.2rem, 1fr) auto auto;
}

.course-card::before {
    display: none;
}

.course-card:hover {
    border-color: rgba(148, 163, 184, 0.58);
    box-shadow: 0 18px 42px rgba(17, 24, 39, 0.09);
}

.course-card h2 {
    max-width: calc(100% - 4rem);
    color: #111827;
    font-size: 1.25rem;
    line-height: 1.2;
    margin-bottom: 0.7rem;
    min-height: 3rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(214, 222, 234, 0.72);
}

.course-card p {
    color: #374151;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.course-card .btn-primary,
.course-card .btn-secondary {
    text-align: center;
    align-self: end;
}

.level-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.32rem 0.72rem;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 900;
    box-shadow: none;
}

.a1 { background: #eef2ff; color: #1d4ed8; }
.a2 { background: #f1f5f9; color: #0369a1; }
.b1 { background: #f5f3ff; color: #6d28d9; }

.price {
    color: var(--nav-blue);
    font-size: 1.35rem;
    font-weight: bold;
    margin: 0 0 1rem;
    align-self: end;
}

.course-card .btn-primary,
.course-card .btn-secondary,
.course-card button {
    width: 100%;
    min-height: 44px;
}

.about-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
    gap: 1rem;
    align-items: stretch;
    margin-top: 1.5rem;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.about-panel,
.about-stat-card {
    border: 1px solid rgba(214, 222, 234, 0.86);
    border-radius: 1.1rem;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(243, 244, 246, 0.9));
    box-shadow: 0 12px 30px rgba(17, 24, 39, 0.065);
}

.about-panel {
    padding: clamp(1.35rem, 2.5vw, 2rem);
}

.about-panel-main {
    min-height: 320px;
}

.section-kicker {
    color: var(--nav-blue);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.about-panel h2 {
    max-width: 18ch;
    color: #111827;
    font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.35rem);
    line-height: 1.08;
    margin-bottom: 1rem;
}

.about-panel p {
    color: #374151;
    line-height: 1.7;
    max-width: 72ch;
}

.about-panel p + p {
    margin-top: 0.8rem;
}

.about-stat-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 320px;
    background:
        radial-gradient(circle at 90% 10%, rgba(29, 78, 216, 0.14), transparent 32%),
        linear-gradient(145deg, #ffffff, #eef2ff);
}

.about-stat-card span {
    color: #4b5563;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.about-stat-card strong {
    color: var(--nav-blue);
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 1.4rem + 4vw, 4.6rem);
    line-height: 0.95;
    margin: 0.6rem 0;
}

.about-stat-card p {
    color: #374151;
    line-height: 1.55;
}

.about-list {
    list-style: none;
    display: grid;
    gap: 0.7rem;
    margin-top: 1rem;
}

.about-list li {
    position: relative;
    padding: 0.78rem 0.9rem 0.78rem 2.45rem;
    border-radius: 0.85rem;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(214, 222, 234, 0.72);
    color: #374151;
    line-height: 1.4;
}

.about-list li::before {
    content: "";
    position: absolute;
    left: 0.9rem;
    top: 50%;
    width: 0.68rem;
    height: 0.68rem;
    border-radius: 50%;
    background: var(--nav-blue);
    transform: translateY(-50%);
}

@media (max-width: 1100px) {
    .course-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-hero,
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .course-grid {
        grid-template-columns: 1fr;
    }

    .about-panel-main,
    .about-stat-card {
        min-height: auto;
    }
}

/* ============================================
   3D THEME EXTENSIONS - Gateway to Future
   Enhanced 3D effects, glassmorphism, particles,
   aurora gradients, and depth animations
   Color variants: #1d4ed8 (primary), #fbfdff (bg),
   #f3f4f6 (surface), #1e40af (hover)
   ============================================ */

/* --- 3D Particle Field Enhancement --- */
#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  opacity: 0.22;
  pointer-events: none;
}

#canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
}

/* --- Aurora Borealis Background --- */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  overflow: hidden;
}
.aurora-bg::before,
.aurora-bg::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: aurora-drift 20s ease-in-out infinite alternate;
}
.aurora-bg::before {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(29,78,216,0.3) 0%, rgba(29,78,216,0) 70%);
  top: -10%;
  left: -10%;
}
.aurora-bg::after {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, rgba(59,130,246,0) 70%);
  bottom: -5%;
  right: -5%;
  animation-delay: -10s;
}

@keyframes aurora-drift {
  0% { transform: translate(0, 0) scale(1) rotate(0deg); }
  25% { transform: translate(100px, 50px) scale(1.1) rotate(45deg); }
  50% { transform: translate(50px, 150px) scale(1.05) rotate(90deg); }
  75% { transform: translate(-50px, 100px) scale(1.15) rotate(135deg); }
  100% { transform: translate(0, 0) scale(1) rotate(180deg); }
}

/* --- Grid Pattern Overlay --- */
.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(29,78,216,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29,78,216,0.035) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: linear-gradient(180deg, black 0%, transparent 75%);
  mask-image: linear-gradient(180deg, black 0%, transparent 75%);
}

/* --- Enhanced Glassmorphism Cards --- */
.glass-3d {
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.92),
    rgba(243,244,246,0.86)
  );
  border: 1px solid rgba(255,255,255,0.7);
  border-top: 1px solid rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(214,222,234,0.6);
  border-radius: 1.2rem;
  padding: 1.6rem;
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow:
    0 20px 50px rgba(17,24,39,0.1),
    0 8px 20px rgba(17,24,39,0.06),
    inset 0 0 0 1px rgba(255,255,255,0.5);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-3d:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow:
    0 30px 70px rgba(29,78,216,0.16),
    0 12px 30px rgba(29,78,216,0.1),
    inset 0 0 0 1px rgba(29,78,216,0.15);
  border-color: rgba(29,78,216,0.3);
}

/* --- Depth Cards with 3.5D Perspective --- */
.depth-card {
  position: relative;
  transform-style: preserve-3d;
  perspective: 1200px;
  border-radius: 1.2rem;
}
.depth-card-inner {
  position: relative;
  background: linear-gradient(160deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid rgba(214,222,234,0.8);
  border-radius: 1.2rem;
  padding: 1.8rem;
  box-shadow:
    0 1px 3px rgba(17,24,39,0.04),
    0 8px 24px rgba(17,24,39,0.06),
    0 16px 40px rgba(17,24,39,0.08);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.depth-card:hover .depth-card-inner {
  transform: translateY(-8px) rotateX(2deg) rotateY(-2deg);
  box-shadow:
    0 12px 35px rgba(29,78,216,0.15),
    0 30px 60px rgba(29,78,216,0.1),
    0 -1px 40px rgba(29,78,216,0.08);
  border-color: rgba(29,78,216,0.32);
}

/* --- 3D Section Containers --- */
.section-3d {
  position: relative;
  padding: clamp(3rem, 6vw, 6rem) 0;
  overflow: hidden;
}
.section-3d .section-bg-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 70%;
  height: 70%;
  background: radial-gradient(
    ellipse at center,
    rgba(29,78,216,0.06) 0%,
    transparent 60%
  );
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 0;
}

/* --- Feature Grid 3D Cards --- */
.feature-grid-3d {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.4rem;
  position: relative;
  z-index: 1;
}
.feature-card-3d {
  background: linear-gradient(150deg, #ffffff 0%, #f3f4f6 100%);
  border: 1px solid rgba(214,222,234,0.85);
  border-radius: 1.1rem;
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow:
    0 4px 20px rgba(17,24,39,0.06),
    0 1px 3px rgba(17,24,39,0.03);
}
.feature-card-3d::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #1d4ed8 0%, #3b82f6 50%, #1d4ed8 100%);
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity 0.3s;
}
.feature-card-3d:hover {
  transform: translateY(-10px) rotateX(1deg);
  box-shadow:
    0 20px 45px rgba(29,78,216,0.14),
    0 8px 20px rgba(29,78,216,0.08),
    0 4px 8px rgba(29,78,216,0.06);
  border-color: rgba(29,78,216,0.35);
}
.feature-card-3d:hover::before {
  opacity: 1;
  animation: shimmer 1.5s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --- 3D Icons & Badges --- */
.icon-3d-chip {
  width: 56px;
  height: 56px;
  border-radius: 0.85rem;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, #ffffff 0%, #e5edff 100%);
  border: 1px solid rgba(214,222,234,0.8);
  color: #1d4ed8;
  font-size: 1.6rem;
  margin-bottom: 1rem;
  box-shadow:
    0 8px 20px rgba(29,78,216,0.12),
    inset 0 1px 0 rgba(255,255,255,0.7);
  transition: all 0.3s ease;
}
.icon-3d-chip:hover {
  transform: scale(1.08) rotate(5deg);
  box-shadow:
    0 14px 30px rgba(29,78,216,0.2),
    inset 0 2px 6px rgba(255,255,255,0.8);
}

.level-badge-3d {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.32rem 0.82rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 900;
  box-shadow: 0 4px 12px rgba(29,78,216,0.2), inset 0 1px 0 rgba(255,255,255,0.5);
  letter-spacing: 0.04em;
}

/* --- Timeline 3D Steps --- */
.timeline-3d {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  counter-reset: step;
  padding: 1rem 0;
}
.timeline-step-3d {
  position: relative;
  padding: 1.6rem;
  background: linear-gradient(160deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid rgba(214,222,234,0.8);
  border-radius: 1.1rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 6px 18px rgba(17,24,39,0.05);
}
.timeline-step-3d::before {
  content: counter(step);
  counter-increment: step;
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: linear-gradient(145deg, #1d4ed8, #1e40af);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(29,78,216,0.35);
  opacity: 0.85;
}
.timeline-step-3d:hover {
  transform: translateY(-8px);
  box-shadow:
    0 16px 40px rgba(29,78,216,0.16),
    0 4px 12px rgba(29,78,216,0.08);
  border-color: rgba(29,78,216,0.3);
}

/* --- 3D Buttons with Depth --- */
.btn-3d {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-height: 50px;
  padding: 0 1.6rem;
  border-radius: 0.85rem;
  border: none;
  font-weight: 700;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}
.btn-3d-primary {
  background: linear-gradient(145deg, #1d4ed8 0%, #1e40af 100%);
  color: #fff;
  box-shadow:
    0 6px 20px rgba(29,78,216,0.28),
    0 3px 8px rgba(29,78,216,0.16),
    inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-3d-primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 12px 30px rgba(29,78,216,0.35),
    0 6px 14px rgba(29,78,216,0.22),
    inset 0 2px 8px rgba(255,255,255,0.25);
}
.btn-3d-primary:active {
  transform: translateY(0);
}
.btn-3d-secondary {
  background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  color: #1d4ed8;
  border: 1px solid rgba(29,78,216,0.22);
  box-shadow:
    0 4px 12px rgba(17,24,39,0.05),
    inset 0 1px 0 rgba(255,255,255,0.8);
}
.btn-3d-secondary:hover {
  background: linear-gradient(145deg, #eff6ff 0%, #e0e7ff 100%);
  transform: translateY(-3px);
  box-shadow:
    0 10px 25px rgba(29,78,216,0.15),
    inset 0 2px 0 rgba(255,255,255,0.9);
}

/* --- 3D Headings with Shadow --- */
.heading-3d {
  font-family: var(--font-display);
  letter-spacing: 0;
  line-height: 1.05;
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 50%, #1d4ed8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px rgba(29,78,216,0.15));
}

/* --- Section Title with Glow --- */
.section-title-glow {
  position: relative;
  padding-bottom: 0.75rem;
}
.section-title-glow::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #1d4ed8 0%, #3b82f6 100%);
  border-radius: 3px;
  box-shadow: 0 2px 12px rgba(29,78,216,0.4);
}

/* --- Floating Elements Animation --- */
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-12px) rotate(1deg); }
  66% { transform: translateY(-6px) rotate(-1deg); }
}
.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* --- Scroll Reveal Animation --- */
.reveal-3d {
  opacity: 0;
  transform: translateY(40px) scale(0.96);
  transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-3d.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* --- Responsive 3D Styles --- */
@media (max-width: 768px) {
  .feature-grid-3d,
  .timeline-3d {
    grid-template-columns: 1fr;
  }
  .depth-card:hover .depth-card-inner {
    transform: translateY(-4px);
  }
  .aurora-bg::before {
    width: 300px;
    height: 300px;
  }
  .aurora-bg::after {
    width: 250px;
    height: 250px;
  }
}

/* --- Dark Theme Support (for future use) --- */
@media (prefers-color-scheme: dark) {
  /* Optional dark mode overrides */
}