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

:root {
  --nav-bg: linear-gradient(180deg, #263a4f 0%, #1f2f40 30%, #182430 100%);
  --nav-text: #d8e0e8;
  --nav-link: #8a9bb0;
  --nav-link-hover: #c0ccda;
  --nav-link-active: #e0e8f0;
  --nav-border: rgba(255,255,255,0.05);
  --footer-bg: #0c1018;
  --footer-text: #8694a6;
  --glass-bg: rgba(22, 38, 62, 0.30);
  --glass-border: rgba(255,255,255,0.10);
  --glass-shadow: 0 10px 50px rgba(0,0,0,0.28);
  --content-text: #e8edf2;
  --content-muted: #a0b0c2;
  --radius: 16px;
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, sans-serif;
}

html, body { height: 100%; }

body {
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  background: #080c12;
}

/* ========== NAV ========== */
.topbar {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2.5rem;
  height: 78px;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--nav-text);
}

.logo-mark {
  height: 42px;
  width: auto;
  filter: invert(1) brightness(0.88);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--nav-text);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--nav-link);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 0;
  border-bottom: 1.5px solid transparent;
  transition: color 0.3s, border-color 0.3s;
}

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

.nav-links a.active {
  color: var(--nav-link-active);
  border-bottom-color: rgba(224,232,240,0.45);
}

/* ========== MAIN ========== */
main {
  flex: 1;
  position: relative;
  min-height: 0;
  overflow: hidden;
}

/* --- Background layers --- */
.bg-layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  filter: blur(12px) saturate(0.5);
  transition: opacity 1.2s ease, filter 1.2s ease;
  will-change: opacity, filter;
}

.bg-layer.active {
  opacity: 1;
  filter: blur(0px) saturate(1);
}

.bg-layer::after {
  content: '';
  position: absolute;
  inset: 0;
}

.bg-layer[data-page="home"] {
  background-color: #0d1e30;
  background-image: url('https://images.unsplash.com/photo-1462331940025-496dfbfc7564?auto=format&fit=crop&w=2560&q=80');
}
.bg-layer[data-page="home"]::after {
  background: linear-gradient(160deg, rgba(8,18,38,0.45), rgba(12,28,52,0.35));
}

.bg-layer[data-page="about"] {
  background-color: #101820;
  background-image: url('https://images.unsplash.com/photo-1487958449943-2429e8be8625?auto=format&fit=crop&w=2560&q=80');
}
.bg-layer[data-page="about"]::after {
  background: linear-gradient(160deg, rgba(10,20,35,0.48), rgba(15,25,45,0.38));
}

.bg-layer[data-page="contact"] {
  background-color: #0a1420;
  background-image: url('https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=2560&q=80');
}
.bg-layer[data-page="contact"]::after {
  background: linear-gradient(160deg, rgba(6,14,28,0.45), rgba(10,22,42,0.35));
}

/* Vignette — fade to dark around edges */
main::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(8,12,18,0.65) 65%, rgba(8,12,18,0.92) 85%, #080c12 100%);
  pointer-events: none;
  z-index: 3;
}

/* --- Fluid container --- */
#fluid {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  z-index: 2;
}

/* --- Page content --- */
.page-content {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  pointer-events: none;
  padding: 2rem;
}

.page-content.active .glass-box,
.page-content.active .glass-panel {
  pointer-events: auto;
}

/* --- Glass shared --- */
.glass-box, .glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(36px);
  -webkit-backdrop-filter: blur(36px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
}

/* --- About/Contact panel transitions --- */
.glass-panel {
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1), transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.glass-panel .box-icon {
  height: clamp(44px, 4.5vw, 64px);
  margin-bottom: 1.5rem;
}

.page-content.active .glass-panel {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.35s;
}

/* --- Box icon (decorative SVG glyphs) --- */
.box-icon {
  display: block;
  height: clamp(36px, 3.5vw, 52px);
  width: auto;
  margin: 0 auto 1rem;
  color: rgba(255,255,255,0.25);
}

/* --- HOME: 3 boxes — CSS Grid --- */
.home-boxes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(2rem, 3vw, 3.5rem);
  width: min(88%, 1800px);
}

.glass-box {
  padding: clamp(2rem, 2.5vw, 3rem) clamp(2rem, 3vw, 3.2rem);
  text-align: center;
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1), transform 1s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

/* Spread from center — viewport-relative */
.page-content[data-page="home"] .glass-box:nth-child(1) { transform: translateX(clamp(80px, 12vw, 220px)) scale(0.92); transition-delay: 0.05s; }
.page-content[data-page="home"] .glass-box:nth-child(2) { transform: scale(0.88); transition-delay: 0s; }
.page-content[data-page="home"] .glass-box:nth-child(3) { transform: translateX(clamp(-220px, -12vw, -80px)) scale(0.92); transition-delay: 0.05s; }

.page-content[data-page="home"].active .glass-box {
  opacity: 1;
  transform: none;
}

.page-content[data-page="home"].active .glass-box:nth-child(1) { transition-delay: 0.35s; }
.page-content[data-page="home"].active .glass-box:nth-child(2) { transition-delay: 0.5s; }
.page-content[data-page="home"].active .glass-box:nth-child(3) { transition-delay: 0.65s; }

.page-content[data-page="home"].active .glass-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 52px rgba(0,0,0,0.4);
}

.glass-box h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 1.2vw + 0.5rem, 1.75rem);
  font-weight: 400;
  color: var(--content-text);
  margin-bottom: 1.4rem;
  letter-spacing: 0.02em;
}

.glass-box p {
  font-size: clamp(0.95rem, 0.8vw + 0.4rem, 1.15rem);
  line-height: 1.8;
  color: var(--content-muted);
  text-align: left;
}

/* --- ABOUT panel --- */
.about-panel {
  max-width: 640px;
  width: 100%;
  padding: 4rem;
}

.about-panel h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--content-text);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}

.about-panel p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--content-muted);
  margin-bottom: 1.25rem;
  text-align: left;
}

.about-panel p:last-child { margin-bottom: 0; }

.about-divider {
  width: 40px;
  height: 1px;
  background: rgba(255,255,255,0.12);
  margin: 1.75rem auto;
}

/* --- CONTACT panel --- */
.contact-panel {
  max-width: 520px;
  width: 100%;
  padding: 4rem;
}

.contact-panel h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--content-text);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}

.contact-panel p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--content-muted);
  margin-bottom: 1.75rem;
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  text-align: left;
}

.contact-item {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
}

.contact-label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--content-muted);
  min-width: 60px;
  flex-shrink: 0;
}

.contact-value {
  font-size: 1rem;
  color: var(--content-text);
}

.contact-value a {
  color: var(--content-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  transition: border-color 0.3s;
}

.contact-value a:hover {
  border-bottom-color: rgba(255,255,255,0.5);
}

/* ========== FOOTER ========== */
footer {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 2.5rem;
  background: var(--footer-bg);
  border-top: 1px solid rgba(255,255,255,0.04);
  font-size: 0.68rem;
  color: var(--footer-text);
  letter-spacing: 0.03em;
}

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

footer a:hover { color: #aabbcc; }

.footer-legal { display: flex; gap: 1rem; }

/* ========== RESPONSIVE ========== */

/* Stack to single column */
@media (max-width: 900px) {
  .page-content {
    overflow-y: auto;
    align-items: flex-start;
  }

  .glass-panel {
    margin: auto;
  }

  .home-boxes {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(0.75rem, 2.5vh, 2.5rem);
    width: 90%;
    max-width: 520px;
    margin: auto;
    padding: 1.5rem 0;
  }

  .home-boxes .glass-box {
    width: 100%;
  }

  /* Burst from center vertically */
  .page-content[data-page="home"] .glass-box:nth-child(1) { transform: translateY(clamp(40px, 8vh, 100px)) scale(0.92); }
  .page-content[data-page="home"] .glass-box:nth-child(2) { transform: scale(0.88); }
  .page-content[data-page="home"] .glass-box:nth-child(3) { transform: translateY(clamp(-100px, -8vh, -40px)) scale(0.92); }

  .page-content[data-page="home"].active .glass-box {
    transform: none;
  }
}

/* Mobile */
@media (max-width: 720px) {
  .topbar { padding: 0 1.25rem; height: 60px; }
  .nav-links { gap: 1.25rem; }
  .nav-links a { font-size: 0.7rem; }
  .logo-mark { height: 34px; }
  .logo-text { font-size: 1.25rem; }

  .home-boxes { max-width: 480px; }

  .about-panel, .contact-panel { padding: 2.5rem 2rem; }
  .about-panel h2, .contact-panel h2 { font-size: 1.6rem; }

  .page-content { padding: 1.25rem; }

  footer {
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.6rem 1.25rem;
    text-align: center;
  }
}

/* Extra-small phones */
@media (max-width: 420px) {
  .glass-box {
    padding: clamp(1.5rem, 4vw, 2rem) clamp(1.25rem, 3.5vw, 1.75rem);
  }

  .box-icon {
    height: 32px;
  }

  .about-panel, .contact-panel { padding: 2rem 1.5rem; }
}

@media (max-height: 550px) {
  body { overflow-y: auto; }
  main { min-height: 420px; }
}