/* ═══════════════════════════════════════════
   PROJECT AESIR — Corporate Site Stylesheet
   ═══════════════════════════════════════════ */

:root {
  --bg:        #0a0c10;
  --bg-alt:    #0f1218;
  --bg-card:   #141820;
  --surface:   #1a1f2a;
  --border:    #252b38;
  --text:      #e2e4e8;
  --text-dim:  #7a8394;
  --accent:    #c9a227;
  --accent-dim:#8a6f1a;
  --cyan:      #3dc7d0;
  --green:     #34d399;
  --warn:      #f59e0b;
  --red:       #ef4444;
  --font-head: 'Rajdhani', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 70px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--cyan); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ─── NAV ─── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10,12,16,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 64px;
}
.logo {
  font-family: var(--font-head);
  font-size: 1.25rem; font-weight: 700;
  color: var(--text); letter-spacing: 2px;
}
.logo-icon { color: var(--accent); margin-right: 6px; }
.nav-links {
  list-style: none; display: flex; gap: 32px;
}
.nav-links a {
  color: var(--text-dim); font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text); transition: 0.3s;
}

/* ─── HERO ─── */
#hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; overflow: hidden;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(201,162,39,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 80%, rgba(61,199,208,0.06) 0%, transparent 60%),
    var(--bg);
}
.hero-overlay {
  position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><rect fill="none" width="60" height="60"/><path d="M0 30h60M30 0v60" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></svg>');
}
.hero-content { position: relative; z-index: 1; max-width: 800px; padding: 0 24px; }
.hero-tag {
  font-family: var(--font-head);
  color: var(--accent); font-size: 0.85rem;
  letter-spacing: 4px; margin-bottom: 16px;
}
#hero h1 {
  font-family: var(--font-head);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700; line-height: 1;
  letter-spacing: 6px; margin-bottom: 24px;
}
.accent { color: var(--accent); }
.hero-sub {
  color: var(--text-dim); font-size: 1.15rem;
  max-width: 600px; margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 28px;
  font-family: var(--font-head); font-size: 0.95rem;
  font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; border-radius: 4px;
  transition: all 0.25s; cursor: pointer;
}
.btn-primary {
  background: var(--accent); color: var(--bg);
  border: 2px solid var(--accent);
}
.btn-primary:hover { background: transparent; color: var(--accent); }
.btn-outline {
  background: transparent; color: var(--text);
  border: 2px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.scroll-indicator {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%);
}
.scroll-indicator span {
  display: block; width: 20px; height: 30px;
  border: 2px solid var(--text-dim); border-radius: 10px;
  position: relative;
}
.scroll-indicator span::after {
  content: ''; position: absolute;
  top: 6px; left: 50%; transform: translateX(-50%);
  width: 3px; height: 8px; border-radius: 2px;
  background: var(--accent);
  animation: scrollPulse 1.5s infinite;
}
@keyframes scrollPulse {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

/* ─── SECTIONS ─── */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-alt); }
.section-tag {
  font-family: var(--font-head);
  color: var(--accent); font-size: 0.8rem;
  letter-spacing: 3px; margin-bottom: 8px;
  text-transform: uppercase;
}
.section h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; margin-bottom: 16px;
  letter-spacing: 2px;
}
.section-desc {
  color: var(--text-dim); font-size: 1.05rem;
  max-width: 740px; margin-bottom: 48px;
  line-height: 1.7;
}

/* ─── ABOUT ─── */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: start; margin-top: 40px;
}
.about-text p { color: var(--text-dim); margin-bottom: 16px; line-height: 1.8; }
.about-text strong { color: var(--text); }

.stat-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-top: 32px;
}
.stat {
  text-align: center; padding: 20px 8px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 6px;
}
.stat-num {
  display: block; font-family: var(--font-head);
  font-size: 1.6rem; font-weight: 700; color: var(--accent);
}
.stat-label {
  display: block; font-size: 0.7rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 1px; margin-top: 4px;
}

.hex-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.hex {
  aspect-ratio: 1.2; display: flex; align-items: center;
  justify-content: center;
  background: var(--bg-card); border: 1px solid var(--border);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.hex span {
  font-family: var(--font-head); font-size: 0.7rem;
  color: var(--text-dim); letter-spacing: 1.5px;
  text-align: center;
}

/* ─── FEATURES ─── */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-bottom: 60px;
}
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 32px 24px;
  transition: border-color 0.3s, transform 0.3s;
}
.feature-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}
.feature-icon {
  font-size: 1.5rem; color: var(--accent);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-family: var(--font-head);
  font-size: 1.1rem; font-weight: 600;
  margin-bottom: 10px; letter-spacing: 0.5px;
}
.feature-card p {
  color: var(--text-dim); font-size: 0.88rem;
  line-height: 1.7;
}

/* ─── ARCHITECTURE DIAGRAM ─── */
.platform-arch {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 40px;
}
.platform-arch h3 {
  font-family: var(--font-head); font-size: 1.2rem;
  margin-bottom: 32px; text-align: center;
  letter-spacing: 1px;
}
.arch-diagram {
  display: flex; flex-direction: column;
  align-items: center; gap: 0;
}
.arch-layer {
  width: 100%; max-width: 700px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 20px 24px;
  display: flex; align-items: center; gap: 24px;
}
.arch-label {
  font-family: var(--font-head); font-size: 0.75rem;
  color: var(--accent); letter-spacing: 2px;
  min-width: 120px; font-weight: 600;
}
.arch-items { display: flex; gap: 16px; flex-wrap: wrap; }
.arch-items span {
  font-size: 0.82rem; color: var(--text-dim);
  background: var(--bg); padding: 4px 12px;
  border-radius: 4px; border: 1px solid var(--border);
}
.arch-connector {
  width: 2px; height: 20px;
  background: var(--border);
}

/* ─── TRITON ─── */
.triton-hero {
  display: grid; grid-template-columns: 380px 1fr;
  gap: 60px; margin-top: 40px; align-items: start;
}
.rebreather-schematic {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 24px;
}
.schematic-svg { width: 100%; height: auto; }

.triton-badge {
  display: inline-block;
  font-family: var(--font-head); font-size: 0.75rem;
  color: var(--warn); letter-spacing: 2px;
  border: 1px solid var(--warn);
  padding: 4px 12px; border-radius: 3px;
  margin-bottom: 16px; opacity: 0.8;
}
.triton-info h3 {
  font-family: var(--font-head); font-size: 1.6rem;
  margin-bottom: 16px; letter-spacing: 1px;
}
.triton-info > p {
  color: var(--text-dim); line-height: 1.8;
  margin-bottom: 24px;
}
.triton-features {
  list-style: none; display: flex;
  flex-direction: column; gap: 16px;
}
.triton-features li {
  color: var(--text-dim); font-size: 0.9rem;
  line-height: 1.7; padding-left: 20px;
  position: relative;
}
.triton-features li::before {
  content: '▸'; position: absolute;
  left: 0; color: var(--accent);
}
.triton-features strong { color: var(--cyan); }

/* ─── SPECS ─── */
.specs-tabs {
  display: flex; gap: 8px; margin-bottom: 32px;
}
.spec-tab {
  font-family: var(--font-head); font-size: 0.85rem;
  letter-spacing: 1.5px; padding: 10px 24px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-dim); border-radius: 4px;
  cursor: pointer; transition: all 0.2s;
}
.spec-tab.active {
  background: var(--accent); color: var(--bg);
  border-color: var(--accent);
}
.spec-tab:hover:not(.active) { border-color: var(--accent-dim); color: var(--text); }

.spec-table {
  width: 100%; border-collapse: collapse;
}
.spec-table tr {
  border-bottom: 1px solid var(--border);
}
.spec-table td {
  padding: 14px 16px; font-size: 0.9rem;
}
.spec-table td:first-child {
  font-family: var(--font-head); font-weight: 600;
  color: var(--text); width: 240px;
  letter-spacing: 0.5px; white-space: nowrap;
}
.spec-table td:last-child { color: var(--text-dim); }

.hidden { display: none; }

/* ─── TIMELINE ─── */
.timeline {
  position: relative; margin-top: 48px;
  padding-left: 40px;
}
.timeline::before {
  content: ''; position: absolute;
  left: 12px; top: 0; bottom: 0;
  width: 2px; background: var(--border);
}
.tl-item { position: relative; margin-bottom: 40px; }
.tl-marker {
  position: absolute; left: -40px; top: 4px;
  width: 24px; height: 24px;
  border: 2px solid var(--border); border-radius: 50%;
  background: var(--bg);
}
.tl-done .tl-marker {
  border-color: var(--green); background: var(--green);
}
.tl-done .tl-marker::after {
  content: '✓'; position: absolute;
  inset: 0; display: flex; align-items: center;
  justify-content: center; font-size: 12px;
  color: var(--bg); font-weight: 700;
}
.tl-active .tl-marker {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(201,162,39,0.2);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(201,162,39,0.2); }
  50%      { box-shadow: 0 0 0 8px rgba(201,162,39,0.05); }
}

.tl-date {
  font-family: var(--font-head); font-size: 0.8rem;
  color: var(--accent); letter-spacing: 2px;
}
.tl-content h4 {
  font-family: var(--font-head); font-size: 1.15rem;
  margin: 4px 0 8px; letter-spacing: 0.5px;
}
.tl-content p {
  color: var(--text-dim); font-size: 0.9rem;
  line-height: 1.7; max-width: 600px;
}

/* ─── CONTACT ─── */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; margin-top: 40px;
}
.contact-info p {
  color: var(--text-dim); line-height: 1.8;
  margin-bottom: 32px;
}
.contact-details { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; flex-direction: column; gap: 2px;
}
.contact-label {
  font-family: var(--font-head); font-size: 0.8rem;
  color: var(--accent); letter-spacing: 1px;
}
.contact-item span:last-child {
  color: var(--text-dim); font-size: 0.95rem;
}

.contact-form {
  display: flex; flex-direction: column; gap: 14px;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; padding: 12px 16px;
  font-family: var(--font-body); font-size: 0.9rem;
  color: var(--text); transition: border-color 0.2s;
  outline: none;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}
.contact-form select { cursor: pointer; }
.contact-form select option { background: var(--bg); }
.contact-form button { align-self: flex-start; }

/* ─── FOOTER ─── */
footer {
  background: var(--bg); border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}
.footer-inner {
  display: flex; justify-content: space-between;
  align-items: flex-start; margin-bottom: 32px;
}
.footer-brand {
  font-family: var(--font-head); font-size: 1.1rem;
  font-weight: 700; letter-spacing: 2px;
}
.footer-legal {
  font-size: 0.75rem; color: var(--text-dim);
  margin-top: 8px; max-width: 400px;
  line-height: 1.6; letter-spacing: 0.5px;
}
.footer-links {
  display: flex; gap: 24px;
}
.footer-links a {
  color: var(--text-dim); font-size: 0.82rem;
  text-transform: uppercase; letter-spacing: 1px;
}
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.footer-bottom p {
  font-size: 0.72rem; color: var(--text-dim);
  line-height: 1.6; text-align: center;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .triton-hero { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none; position: absolute;
    top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: rgba(10,12,16,0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 16px 24px; }

  .features-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .arch-layer { flex-direction: column; gap: 8px; }
  .arch-label { min-width: auto; }

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-links { flex-wrap: wrap; }
}