/* ============================================================
   Copernicus | Planet 116 — Premium Static Stylesheet
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

:root {
  --bg: #0d0d0d;
  --bg-2: #111111;
  --card: #1a1a1a;
  --text: #ffffff;
  --muted: #a1a1aa;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --glow-blue: 0 0 60px rgba(59, 130, 246, 0.35);
  --glow-purple: 0 0 60px rgba(139, 92, 246, 0.3);
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-hover: 0 20px 60px rgba(59, 130, 246, 0.25);
  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --pad-section: clamp(56px, 8vw, 120px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

body.no-scroll {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: "Poppins", "Inter", sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Section heading ---------- */
.section-head {
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 70px);
}

.section-head h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--muted);
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: transparent;
  transition: background 0.35s var(--ease), backdrop-filter 0.35s var(--ease),
    border-color 0.35s var(--ease), padding 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(13, 13, 13, 0.7);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.3s var(--ease), filter 0.3s var(--ease);
}

.logo-link:hover {
  transform: translateY(-1px);
  filter: drop-shadow(0 0 14px rgba(59, 130, 246, 0.45));
}

.logo-box {
  background: rgba(255, 255, 255, 0.96);
  border-radius: 10px;
  padding: 6px 12px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
}

.logo-box img {
  height: 26px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-menu a {
  position: relative;
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 999px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text);
  background: rgba(59, 130, 246, 0.1);
}

.hamburger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  position: relative;
}

.hamburger span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform 0.35s var(--ease), opacity 0.25s var(--ease), top 0.3s var(--ease);
}

.hamburger span:nth-child(1) { top: calc(50% - 6px); }
.hamburger span:nth-child(3) { top: calc(50% + 6px); }

.hamburger.active span:nth-child(1) { top: 50%; transform: translate(-50%, -50%) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 50%; transform: translate(-50%, -50%) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 140px 0 80px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 50% at 20% 20%, rgba(59, 130, 246, 0.25), transparent 60%),
    radial-gradient(50% 50% at 85% 80%, rgba(139, 92, 246, 0.22), transparent 60%),
    radial-gradient(40% 40% at 50% 50%, rgba(59, 130, 246, 0.08), transparent 70%),
    var(--bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  opacity: 0.5;
}

.hero-content {
  text-align: center;
  max-width: 880px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #93c5fd;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

.hero h1 {
  font-size: clamp(2.4rem, 7vw, 5rem);
  margin-bottom: 22px;
  letter-spacing: -0.035em;
}

.hero .subtitle {
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.05rem, 2.2vw, 1.4rem);
  font-weight: 500;
  color: #d4d4d8;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.hero .desc {
  color: var(--muted);
  font-size: clamp(0.95rem, 1.6vw, 1.05rem);
  max-width: 560px;
  margin: 0 auto 38px;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--gradient);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.cta .arrow {
  transition: transform 0.3s var(--ease);
}

.cta:hover .arrow {
  transform: translateX(4px);
}

/* Hero orbit visual */
.hero-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(420px, 70vw, 760px);
  height: clamp(420px, 70vw, 760px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.orbit-ring.r2 { inset: 14%; border-color: rgba(139, 92, 246, 0.18); }
.orbit-ring.r3 { inset: 28%; border-color: rgba(59, 130, 246, 0.18); }

.orbit-spin {
  position: absolute;
  inset: 0;
  animation: spin 22s linear infinite;
}
.orbit-spin.s2 {
  inset: 14%;
  animation: spin 16s linear infinite reverse;
}

.orbit-planet {
  position: absolute;
  top: -7px;
  left: 50%;
  transform: translateX(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent), 0 0 40px rgba(59, 130, 246, 0.5);
}

.orbit-spin.s2 .orbit-planet {
  background: var(--accent-2);
  box-shadow: 0 0 18px var(--accent-2), 0 0 36px rgba(139, 92, 246, 0.5);
  width: 10px;
  height: 10px;
  top: -5px;
}

.hero-logo-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(140px, 22vw, 240px);
  opacity: 0.06;
  filter: invert(1);
  z-index: -1;
  pointer-events: none;
}

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

/* ---------- Sections common ---------- */
section {
  padding: var(--pad-section) 0;
  position: relative;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.about-text h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: 22px;
}

.about-text p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.about-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 24px;
  background:
    radial-gradient(60% 60% at 30% 30%, rgba(59, 130, 246, 0.18), transparent 70%),
    radial-gradient(50% 50% at 70% 70%, rgba(139, 92, 246, 0.18), transparent 70%),
    rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual .a-orbit {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-visual .a-orbit::before,
.about-visual .a-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.about-visual .a-orbit::before { width: 80%; height: 80%; }
.about-visual .a-orbit::after { width: 55%; height: 55%; border-color: rgba(139, 92, 246, 0.2); }

.about-visual .a-core {
  position: relative;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 60px rgba(59, 130, 246, 0.6);
}

.about-visual .a-spin {
  position: absolute;
  width: 80%;
  height: 80%;
  animation: spin 18s linear infinite;
}
.about-visual .a-spin .dot {
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 16px var(--accent-2);
}

/* ---------- Identity cards ---------- */
.cards-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.glass-card {
  position: relative;
  padding: 32px 26px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0), rgba(139, 92, 246, 0));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: background 0.4s var(--ease);
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(59, 130, 246, 0.15);
}

.glass-card:hover::before {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.6), rgba(139, 92, 246, 0.6));
}

.icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  margin-bottom: 20px;
  color: var(--accent);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    transform 0.35s var(--ease);
}

.glass-card:hover .icon-circle {
  background: rgba(59, 130, 246, 0.18);
  border-color: rgba(59, 130, 246, 0.45);
  transform: scale(1.05);
}

.glass-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.glass-card p {
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.65;
}

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: pointer;
  background: var(--card);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease), filter 0.5s var(--ease);
  filter: saturate(0.9) brightness(0.9);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.85));
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.gallery-overlay span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  font-weight: 500;
  transform: translateY(10px);
  transition: transform 0.4s var(--ease);
}

.gallery-item:hover img {
  transform: scale(1.08);
  filter: saturate(1.1) brightness(1);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-item:hover .gallery-overlay span {
  transform: translateY(0);
}

/* ---------- Activities ---------- */
.activities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.activity-card {
  padding: 36px 30px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}

.activity-card::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.18), transparent 70%);
  top: -100px;
  right: -100px;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.activity-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55), 0 0 40px rgba(59, 130, 246, 0.15);
}

.activity-card:hover::after { opacity: 1; }

.activity-num {
  font-family: "Poppins", sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: block;
}

.activity-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.activity-card p {
  color: var(--muted);
  font-size: 0.97rem;
}

/* ---------- Slogan ---------- */
.slogan {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.slogan::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.slogan-text {
  position: relative;
  z-index: 1;
  font-family: "Poppins", sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 4.5rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 1000px;
  margin: 0 auto;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 50px 0 40px;
  background: var(--bg-2);
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.footer-tag {
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.footer-ig {
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: filter 0.3s var(--ease), transform 0.3s var(--ease);
  display: inline-block;
}

.footer-ig:hover {
  filter: drop-shadow(0 0 14px rgba(59, 130, 246, 0.6));
  transform: translateY(-2px);
}

.footer-copy {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--i, 0) * 80ms);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal-scale.in-view {
  opacity: 1;
  transform: scale(1);
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-visual {
    max-width: 480px;
    margin: 0 auto;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(80%, 320px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding: 80px 32px;
    background: rgba(13, 13, 13, 0.92);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-menu a {
    font-size: 1.15rem;
    padding: 12px 18px;
    width: 100%;
  }

  .hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 110;
  }

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

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

  .hero {
    padding: 130px 0 70px;
    min-height: auto;
  }

  .hero-orbit {
    opacity: 0.55;
  }

  .hero-logo-bg {
    display: none;
  }

  .cta {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  .activity-card,
  .glass-card {
    padding: 28px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   THEME TOGGLE + LIGHT MODE
   ============================================================ */

body,
.navbar,
.navbar.scrolled,
.glass-card,
.activity-card,
.icon-circle,
.activity-icon,
.footer,
.nav-menu,
.logo-box,
.theme-toggle,
.hamburger {
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    transform 0.3s var(--ease);
}

.theme-toggle:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.35);
  transform: translateY(-1px);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  top: 50%;
  left: 50%;
  transition: opacity 0.35s var(--ease), transform 0.5s var(--ease);
}

.theme-toggle .icon-moon { opacity: 0; transform: translate(-50%, -50%) rotate(-90deg) scale(0.6); }
.theme-toggle .icon-sun  { opacity: 1; transform: translate(-50%, -50%) rotate(0deg) scale(1); }

[data-theme="light"] .theme-toggle .icon-sun  { opacity: 0; transform: translate(-50%, -50%) rotate(90deg) scale(0.6); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 1; transform: translate(-50%, -50%) rotate(0deg) scale(1); }

.activity-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--accent);
  margin-bottom: 18px;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease),
    transform 0.35s var(--ease);
}

.activity-card:hover .activity-icon {
  background: rgba(59, 130, 246, 0.18);
  border-color: rgba(59, 130, 246, 0.5);
  transform: scale(1.05);
}

/* ---------- LIGHT THEME ---------- */
[data-theme="light"] {
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --card: #ffffff;
  --text: #0d0d0d;
  --muted: #6b7280;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 20px 50px rgba(59, 130, 246, 0.18);
}

[data-theme="light"] body {
  background: var(--bg);
  color: var(--text);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .logo-box {
  background: #ffffff;
  border: 1px solid var(--border-strong);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .nav-menu a { color: #4b5563; }
[data-theme="light"] .nav-menu a:hover,
[data-theme="light"] .nav-menu a.active {
  color: var(--text);
  background: rgba(59, 130, 246, 0.1);
}

[data-theme="light"] .theme-toggle,
[data-theme="light"] .hamburger {
  background: #f5f5f7;
  border-color: var(--border);
  color: var(--text);
}
[data-theme="light"] .hamburger span { background: var(--text); }

@media (max-width: 767px) {
  [data-theme="light"] .nav-menu {
    background: rgba(255, 255, 255, 0.95);
    border-left: 1px solid var(--border);
  }
}

[data-theme="light"] .hero-bg {
  background:
    radial-gradient(60% 50% at 20% 20%, rgba(59, 130, 246, 0.12), transparent 60%),
    radial-gradient(50% 50% at 85% 80%, rgba(139, 92, 246, 0.10), transparent 60%),
    var(--bg);
}

[data-theme="light"] .hero-grid {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px);
  opacity: 0.7;
}

[data-theme="light"] .orbit-ring { border-color: rgba(0, 0, 0, 0.08); }
[data-theme="light"] .orbit-ring.r2 { border-color: rgba(139, 92, 246, 0.25); }
[data-theme="light"] .orbit-ring.r3 { border-color: rgba(59, 130, 246, 0.25); }

[data-theme="light"] .hero-logo-bg {
  filter: none;
  opacity: 0.05;
}

[data-theme="light"] .hero-badge {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.25);
  color: #1d4ed8;
}

[data-theme="light"] .hero .subtitle { color: #374151; }

[data-theme="light"] section { background: var(--bg); }
[data-theme="light"] #identity,
[data-theme="light"] #activities { background: var(--bg-2); }

[data-theme="light"] .glass-card,
[data-theme="light"] .activity-card {
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

[data-theme="light"] .glass-card:hover,
[data-theme="light"] .activity-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08), 0 0 30px rgba(59, 130, 246, 0.1);
}

[data-theme="light"] .icon-circle,
[data-theme="light"] .activity-icon {
  background: rgba(59, 130, 246, 0.08);
  border-color: rgba(59, 130, 246, 0.2);
}

[data-theme="light"] .about-visual {
  background:
    radial-gradient(60% 60% at 30% 30%, rgba(59, 130, 246, 0.1), transparent 70%),
    radial-gradient(50% 50% at 70% 70%, rgba(139, 92, 246, 0.1), transparent 70%),
    rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border);
}
[data-theme="light"] .about-visual .a-orbit::before,
[data-theme="light"] .about-visual .a-orbit::after {
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .gallery-item {
  background: #f5f5f7;
  border: 1px solid var(--border);
}
[data-theme="light"] .gallery-item img {
  filter: saturate(1) brightness(1);
}

[data-theme="light"] .slogan::before {
  background: radial-gradient(ellipse, rgba(59, 130, 246, 0.1), transparent 70%);
}

[data-theme="light"] .footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
}
[data-theme="light"] .footer-tag,
[data-theme="light"] .footer-copy { color: var(--muted); }