/* ============================================
   Stellar Sequence - Enterprise Website
   Design: Minimal / Editorial / Cosmic
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg: #080810;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-active: rgba(168, 130, 255, 0.35);
  --text-primary: #f0edff;
  --text-secondary: #8a85a6;
  --text-muted: #5a5578;
  --accent: #a882ff;
  --accent-soft: #c4b5ff;
  --accent-dim: rgba(168, 130, 255, 0.15);
  --white: #ffffff;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --font-display: 'SF Pro Display', 'Inter', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
  --font-body: 'SF Pro Text', 'Inter', 'PingFang SC', 'Noto Sans SC', system-ui, sans-serif;
  --nav-height: 72px;
  --max-width: 1320px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--text-primary); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--accent-soft); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* --- Starfield Canvas --- */
#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  transition: all 0.4s ease;
}

.nav.scrolled {
  background: rgba(8, 8, 16, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.5px;
}

.nav-logo .logo-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #a882ff, #6c5ce7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  box-shadow: 0 0 16px rgba(168, 130, 255, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  width: 22px; height: 1.5px;
  background: var(--white);
  border-radius: 1px;
  transition: all 0.3s ease;
}

/* --- Page Wrapper --- */
.page-wrapper {
  position: relative;
  z-index: 1;
  padding-top: var(--nav-height);
}

/* --- Container --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* --- Section --- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  font-family: var(--font-body);
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(168, 130, 255, 0.25);
}
.btn-primary:hover {
  background: #b892ff;
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(168, 130, 255, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-1px);
}

.btn-text {
  background: none;
  color: var(--accent-soft);
  padding: 8px 0;
  border-radius: 0;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  position: relative;
}
.btn-text::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}
.btn-text:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* --- Hero --- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 0 40px;
  position: relative;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-tagline {
  font-size: 0.75rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 6rem);
  font-weight: 200;
  color: var(--white);
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 32px;
  max-width: 900px;
}

.hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, #a882ff 0%, #d4c5ff 50%, #a882ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.8;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Stellar Matrix (Canvas) --- */
#stellarMatrix {
  display: block;
  position: relative;
  z-index: 1;
}

.matrix-container {
  width: 100%;
  overflow: hidden;
}

.matrix-container canvas {
  display: block;
  width: 100%;
}

/* --- Media Showcase (Video + Image) --- */
.media-showcase {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  margin-top: 60px;
}

.media-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color 0.4s ease;
}

.media-card:hover {
  border-color: var(--border-active);
}

.media-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-card .media-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  gap: 8px;
  background: linear-gradient(135deg, rgba(168, 130, 255, 0.05), rgba(108, 92, 231, 0.03));
}

.media-card .media-placeholder .icon {
  font-size: 2rem;
  opacity: 0.5;
}

.media-label {
  position: absolute;
  top: 16px; left: 16px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(10px);
  color: var(--white);
  z-index: 2;
}

.image-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
  height: 100%;
}

.image-gallery .gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.4s ease, transform 0.4s ease;
}

.image-gallery .gallery-item:hover {
  border-color: var(--border-active);
  transform: scale(1.03);
}

.image-gallery .gallery-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.image-gallery .gallery-placeholder .icon {
  font-size: 1.5rem;
  opacity: 0.4;
}

/* --- Services Grid --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-card {
  background: var(--bg-card);
  padding: 48px 36px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(168, 130, 255, 0.05), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-card:hover {
  background: var(--bg-card-hover);
}
.service-card:hover::before { opacity: 1; }

.service-card > * { position: relative; z-index: 1; }

.service-index {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 200;
  color: var(--accent-soft);
  line-height: 1;
  margin-bottom: 24px;
  opacity: 0.6;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.service-tag {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  letter-spacing: 0.3px;
}

/* --- About Page --- */
.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(168, 130, 255, 0.1), rgba(108, 92, 231, 0.05));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  position: relative;
  overflow: hidden;
}

.about-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(168, 130, 255, 0.08), transparent 60%);
}

.about-content .section-label { margin-top: 0; }

.about-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* Values */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.value-card {
  background: var(--bg-card);
  padding: 48px 32px;
  text-align: center;
  transition: background 0.4s ease;
}

.value-card:hover { background: var(--bg-card-hover); }

.value-card .value-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  opacity: 0.7;
}

.value-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Timeline (minimal) */
.timeline-minimal {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.timeline-item-mini {
  flex: 1;
  padding: 40px 28px;
  border-right: 1px solid var(--border);
  background: var(--bg-card);
  transition: background 0.4s ease;
}
.timeline-item-mini:last-child { border-right: none; }
.timeline-item-mini:hover { background: var(--bg-card-hover); }

.timeline-year {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 200;
  color: var(--accent-soft);
  opacity: 0.5;
  margin-bottom: 12px;
}

.timeline-item-mini h4 {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 6px;
}

.timeline-item-mini p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Stats */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-cell {
  background: var(--bg-card);
  padding: 40px 20px;
  text-align: center;
  transition: background 0.4s ease;
}
.stat-cell:hover { background: var(--bg-card-hover); }

.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 200;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

/* --- Product Page --- */
.product-section {
  padding: 100px 0;
}

.product-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.product-block:first-child { padding-top: 0; }
.product-block:last-child { border-bottom: none; padding-bottom: 0; }

.product-block:nth-child(even) { direction: rtl; }
.product-block:nth-child(even) .product-text { direction: ltr; }

.product-visual-block {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(168, 130, 255, 0.06), rgba(108, 92, 231, 0.03));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s ease;
}

.product-visual-block:hover {
  border-color: var(--border-active);
}

.product-text .product-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 200;
  color: var(--accent-soft);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.product-text h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.product-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* --- Contact Page --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.contact-form {
  padding: 0;
}

.form-group {
  margin-bottom: 28px;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 16px 0;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--white);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color 0.3s ease;
  outline: none;
  border-radius: 0;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-group textarea { min-height: 100px; resize: vertical; }

.form-group select {
  color: var(--text-secondary);
  cursor: pointer;
}
.form-group select option {
  background: #1a1a2e;
  color: var(--white);
}

.contact-info-column {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 8px;
}

.contact-line {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.contact-line:last-child { border-bottom: none; }

.contact-line .label {
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.contact-line .value {
  font-size: 1rem;
  color: var(--white);
  line-height: 1.5;
}

/* --- Footer --- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
}

.footer .container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
}

.footer-brand .nav-logo { margin-bottom: 16px; }

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: color 0.3s ease;
}
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  max-width: var(--max-width);
  margin: 60px auto 0;
  padding: 24px 40px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* --- Toast --- */
.toast {
  position: fixed;
  top: 100px;
  right: 32px;
  z-index: 9999;
  padding: 14px 28px;
  border-radius: var(--radius);
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 500;
  animation: slideInRight 0.4s ease, fadeOut 0.4s ease 2.6s forwards;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.toast.success {
  background: rgba(34, 197, 94, 0.85);
  border: 1px solid rgba(34, 197, 94, 0.4);
}

.toast.error {
  background: rgba(239, 68, 68, 0.85);
  border: 1px solid rgba(239, 68, 68, 0.4);
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .about-hero-grid,
  .contact-layout,
  .product-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .product-block:nth-child(even) { direction: ltr; }
  .footer .container { grid-template-columns: 1fr 1fr; }
  .media-showcase { grid-template-columns: 1fr; }
  .timeline-minimal { flex-wrap: wrap; }
  .timeline-item-mini { flex: 1 1 50%; border-bottom: 1px solid var(--border); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .section-title { font-size: 2rem; }
  .nav { padding: 0 24px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(8, 8, 16, 0.96);
    backdrop-filter: blur(24px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: flex; }
  .container { padding: 0 24px; }
  .footer .container { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 0; }
  .hero { padding: 0 24px; }
  .timeline-item-mini { flex: 1 1 100%; }
  .image-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: auto; aspect-ratio: auto; }
}