:root {
  color-scheme: dark;
  --bg: #060712;
  --surface: rgba(13, 22, 36, 0.92);
  --surface-soft: rgba(18, 30, 50, 0.94);
  --surface-strong: rgba(15, 23, 40, 0.98);
  --text: #e7f1ff;
  --muted: #99a8c6;
  --accent: #62d3ff;
  --accent-dark: #2cb5ff;
  --border: rgba(98, 211, 255, 0.18);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, rgba(98, 211, 255, 0.12), transparent 22%), linear-gradient(180deg, #04060d 0%, #07101f 62%, #060912 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(98, 211, 255, 0.03) 1px, transparent 1px), linear-gradient(180deg, rgba(98, 211, 255, 0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.84);
  color: var(--text);
  border-radius: 999px;
  z-index: 20;
  transform: translateY(-120%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: rgba(3, 10, 21, 0.92);
  border-bottom: 1px solid rgba(98, 211, 255, 0.12);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.brand-tag {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

.auth-btn {
  border: 1px solid rgba(98, 211, 255, 0.18);
  color: var(--text);
}

.content-shell {
  width: min(1120px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.hero-section {
  min-height: 520px;
  display: grid;
  place-items: center;
  padding: 3rem 1.5rem;
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  background: radial-gradient(circle at top left, rgba(98, 211, 255, 0.18), transparent 24%), linear-gradient(130deg, rgba(24, 38, 63, 0.95), rgba(9, 15, 27, 0.96));
  box-shadow: var(--shadow);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 10%, rgba(98, 211, 255, 0.18), transparent 14%), radial-gradient(circle at 80% 35%, rgba(98, 211, 255, 0.16), transparent 14%), radial-gradient(circle at 55% 80%, rgba(255, 255, 255, 0.05), transparent 12%);
  opacity: 0.8;
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  text-align: left;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-copy h1 {
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  margin: 0;
  letter-spacing: -0.05em;
}

.hero-lead,
.hero-quote {
  max-width: 760px;
  margin-top: 1.25rem;
  line-height: 1.75;
  color: var(--muted);
}

.hero-quote {
  color: var(--text);
  font-weight: 500;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  border-radius: 999px;
  padding: 0.92rem 1.6rem;
  font-weight: 600;
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(98, 211, 255, 0.22);
  color: var(--text);
}

.feature-grid,
.project-grid,
.gallery-grid,
.stacked-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.project-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.gallery-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.stacked-grid {
  grid-template-columns: 1.4fr 0.9fr;
}

.glass-card,
.panel-card,
.project-card,
.info-panel,
.contact-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 1.8rem;
  backdrop-filter: blur(18px);
}

.glass-card:hover,
.project-card:hover,
.info-panel:hover,
.contact-panel:hover {
  border-color: rgba(98, 211, 255, 0.34);
}

.glass-card h2,
.project-card h2,
.panel-header h2,
.page-header h1 {
  margin-top: 0;
}

.project-card {
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-8px);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
}

.gallery-item img {
  width: 100%;
  display: block;
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1rem;
  background: linear-gradient(180deg, transparent, rgba(3, 8, 17, 0.9));
  color: var(--text);
  font-size: 0.95rem;
}

.panel {
  margin-top: 2.5rem;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-header h2 {
  margin: 0;
}

.panel-header p {
  margin: 0;
  color: var(--muted);
}

.auth-panel {
  display: grid;
  gap: 1rem;
}

.panel-card h3 {
  margin-top: 0;
}

.info-panel dl {
  display: grid;
  gap: 1rem;
  margin: 0 0 1.5rem;
}

.info-panel dt {
  color: var(--muted);
  font-size: 0.9rem;
}

.info-panel dd {
  margin: 0;
  font-weight: 600;
}

.quote-block {
  border-top: 1px solid rgba(98, 211, 255, 0.12);
  padding-top: 1.25rem;
  margin-top: 1.5rem;
}

.quote-block p {
  margin: 0 0 0.5rem;
}

.quote-block span {
  color: var(--accent);
  font-size: 0.9rem;
}

.details-panel {
  margin-top: 1rem;
  border: 1px solid rgba(98, 211, 255, 0.14);
  border-radius: 18px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.02);
}

.details-panel summary {
  font-weight: 600;
  cursor: pointer;
}

.details-panel ul {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.page-header {
  padding: 2.5rem 0 1rem;
}

.page-header h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(2.2rem, 3.2vw, 3.6rem);
}

.page-header .hero-lead {
  margin-top: 1rem;
  color: var(--muted);
}

.contact-form {
  display: grid;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  gap: 0.5rem;
}

.form-label {
  font-weight: 600;
  color: var(--text);
}

.form-control {
  border-radius: 16px;
  border: 1px solid rgba(98, 211, 255, 0.15);
  background: rgba(2, 8, 18, 0.95);
  color: var(--text);
  padding: 0.95rem 1rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(98, 211, 255, 0.14);
}

.form-note {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  margin-top: auto;
  padding: 1.5rem 0;
  text-align: center;
  color: var(--muted);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1, 5, 13, 0.88);
  display: grid;
  place-items: center;
  padding: 1.5rem;
  z-index: 50;
}

.modal-card {
  width: min(520px, 100%);
  border-radius: 28px;
  background: rgba(9, 16, 30, 0.96);
  border: 1px solid rgba(98, 211, 255, 0.14);
  box-shadow: var(--shadow);
  padding: 2rem;
}

.modal-card-header h2 {
  margin: 0 0 0.5rem;
}

.modal-card-header p {
  margin: 0;
  color: var(--muted);
}

.auth-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.hidden {
  display: none !important;
}

.input-error {
  border-color: #ff6f6f !important;
  animation: shake 0.25s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@media (max-width: 860px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }
  .nav-links {
    justify-content: center;
  }
  .stacked-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .hero-section {
    padding: 2rem 1rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}