/* ==========================
   Ultra-Premium Design Tokens
========================== */
:root {
  --bg-base: #09090b;
  --bg-surface: #18181b;
  --neon-cyan: #38bdf8;
  --neon-blue: #60a5fa;
  --neon-purple: #818cf8;
  --accent-gradient: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  --glass-bg: rgba(255, 255, 255, 0.02);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-hover: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(20px);
  --header-glass: rgba(9, 9, 11, 0.65);
  --text-main: #f8fafc;
  --text-muted: #a1a1aa;
  --mesh-opacity: 0.03;
}

[data-theme="light"] {
  --bg-base: #fafafa;
  --bg-surface: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.06);
  --glass-hover: rgba(255, 255, 255, 0.9);
  --header-glass: rgba(250, 250, 250, 0.8);
  --text-main: #09090b;
  --text-muted: #52525b;
  --mesh-opacity: 0.08;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

::selection {
  background: rgba(56, 189, 248, 0.3);
  color: var(--text-main);
  text-shadow: none;
}
::-moz-selection {
  background: rgba(56, 189, 248, 0.3);
  color: var(--text-main);
  text-shadow: none;
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--bg-base);
  background-image:
    radial-gradient(circle at 10% 0%, rgba(56, 189, 248, var(--mesh-opacity)), transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(129, 140, 248, var(--mesh-opacity)), transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.6s cubic-bezier(0.16, 1, 0.3, 1), color 0.6s ease;
}

h1, h2, h3, .logo {
  font-family: 'Clash Display', sans-serif;
  letter-spacing: -0.02em;
}

h1, h2 {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  margin-bottom: 1.5rem;
}

a {
  color: var(--neon-blue);
  text-decoration: none;
  transition: all 0.3s ease;
}
a:hover {
  color: var(--neon-purple);
}

/* Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: 1.2rem 5vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background 0.5s ease;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.top-buttons {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}

.top-buttons .button {
  padding: 0.5rem 1.2rem;
  border-radius: 20px;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid transparent;
  background: transparent;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.top-buttons .button:hover {
  background: var(--glass-bg);
  border-color: var(--glass-border);
  color: var(--text-main);
}

.top-buttons .button.active {
  background: var(--glass-bg);
  color: var(--text-main);
  border-color: var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

#themeToggle {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: absolute;
  top: 1.2rem;
  right: 5vw;
}

#themeToggle:hover {
  transform: scale(1.05) rotate(5deg);
  background: var(--glass-hover);
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Main Content */
main {
  flex: 1;
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  padding: 5rem 5vw;
}

h2 { font-size: 1.8rem; margin-top: 4rem; letter-spacing: -0.01em; }
p, ul { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 1.5rem; font-weight: 300; }
ul { padding-left: 1.5rem; margin-bottom: 1.5rem; }
li { margin-bottom: 0.6rem; }

/* Images & Media */
.card-img {
  width: 100%;
  height: auto;
  max-height: 450px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  background-color: var(--glass-border);
}

/* Hero Section */
.hero-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 5rem;
  margin-bottom: 5rem;
}

.hero-text { flex: 1.2; }
.hero-visual { flex: 0.8; display: flex; justify-content: center; }

.image-frame {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  border-radius: 30px;
  padding: 2px;
  background: var(--accent-gradient);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  animation: float 8s ease-in-out infinite;
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
  background-color: var(--bg-surface);
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
  100% { transform: translateY(0px); }
}

.button[style*="background: var(--accent-gradient)"] {
  background: var(--text-main) !important;
  color: var(--bg-base) !important;
  box-shadow: none !important;
  transition: transform 0.3s ease, opacity 0.3s ease !important;
}
.button[style*="background: var(--accent-gradient)"]:hover {
  transform: translateY(-2px) !important;
  opacity: 0.9 !important;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-main);
  font-weight: 500;
}

/* Tables */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
}

thead { background: var(--glass-bg); }
th, td { padding: 1rem 1.2rem; text-align: left; font-size: 0.95rem;}
th { font-weight: 500; color: var(--text-muted); text-transform: uppercase; font-size: 0.8rem; letter-spacing: 0.05em; border-bottom: 1px solid var(--glass-border); }
td { border-bottom: 1px solid var(--glass-border); background: transparent; }
tr:last-child td { border-bottom: none; }
td strong { color: var(--text-main); font-weight: 500; }

/* Back to Top */
#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--header-glass);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: var(--glass-blur);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

#backToTop:hover {
  transform: translateY(-4px);
  background: var(--glass-hover);
  border-color: var(--text-muted);
}

#backToTop.show {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 900px) {
  .hero-wrapper { flex-direction: column-reverse; text-align: center; gap: 3rem; margin-bottom: 3rem;}
  .image-frame { max-width: 220px; }
  #themeToggle { top: 1rem; right: 1rem; width: 35px; height: 35px; font-size: 1rem; }
  header h1 { font-size: 1.5rem; }
  main { padding: 3rem 5vw; }
}

#scrollProgress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--accent-gradient);
  width: 0%;
  z-index: 9999;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
  transition: width 0.1s ease-out;
}

/* ==========================
   Lightbox / Modal UI
========================== */
.expandable {
  cursor: zoom-in;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.expandable:hover {
  transform: scale(1.02);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
table.expandable:hover {
  transform: translateY(-4px);
}

#lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--header-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 2rem;
  cursor: zoom-out; /* Changes cursor to indicate clicking anywhere closes it */
}
#lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}
#lightbox-modal .lightbox-content {
  cursor: auto;
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(0.95);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 12px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  background: var(--bg-surface);
  overflow: auto;
}
#lightbox-modal table.lightbox-content {
  width: auto; /* Fixes the bug where tables stretch too far in the modal */
  min-width: 50vw;
  margin: 0 auto;
}
#lightbox-modal.active .lightbox-content {
  transform: scale(1);
}
#lightbox-modal img.lightbox-content {
  background: transparent;
  object-fit: contain;
  cursor: zoom-out; /* Clicking the image itself will close it */
}
#lightbox-close {
  position: absolute;
  top: 30px;
  right: 30px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 100000;
}
#lightbox-close:hover {
  background: var(--glass-hover);
  transform: rotate(90deg);
}