:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --bg-2: #121826;
  --card: rgba(20, 24, 36, 0.75);
  --card-border: rgba(120, 140, 180, 0.15);
  --text: #e7ecf5;
  --muted: rgba(231, 236, 245, 0.6);
  --accent: #5ae0ff;
  --accent-strong: #7f7bff;
  --warning: #ff4d5a;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --radius: 24px;
  --transition: 220ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "Inter", "SF Pro Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1b2437 0%, var(--bg) 55%);
  overflow-x: hidden;
  line-height: 1.6;
}

.background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: linear-gradient(120deg, rgba(90, 224, 255, 0.15), transparent 40%),
    radial-gradient(circle at 20% 20%, rgba(127, 123, 255, 0.25), transparent 45%),
    radial-gradient(circle at 80% 30%, rgba(255, 77, 90, 0.2), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(74, 197, 255, 0.18), transparent 40%);
  filter: blur(0px);
  animation: mesh 12s ease-in-out infinite alternate;
}

.background::after {
  content: "";
  position: absolute;
  inset: -20%;
  background: url("data:image/svg+xml,%3Csvg width='160' height='160' viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' seed='4'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.35;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

@keyframes mesh {
  0% {
    transform: translateY(-4%) scale(1.05);
  }
  100% {
    transform: translateY(4%) scale(1.1);
  }
}

.hero {
  padding: 40px clamp(20px, 6vw, 120px) 120px;
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.hero-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.logo {
  font-size: 20px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.nav-link:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
}

.hero-content {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  color: var(--muted);
}

.hero h1 {
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.05;
}

.subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
}

.subtext {
  color: var(--muted);
  font-size: 16px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 10px;
}

.btn {
  border: none;
  cursor: pointer;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  color: #06131a;
  font-weight: 600;
}

.btn.secondary {
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.projects {
  padding: 0 clamp(20px, 6vw, 120px) 120px;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 40px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
}

.section-header p {
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.card {
  position: relative;
  padding: 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  transition: var(--transition);
  transform-style: preserve-3d;
}

.card-active {
  cursor: pointer;
  overflow: hidden;
}

.card-active:hover {
  transform: translateY(-8px);
  border-color: rgba(90, 224, 255, 0.5);
}

.card-active:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.card-media {
  position: relative;
  height: 180px;
  border-radius: 18px;
  overflow: hidden;
  margin-bottom: 20px;
}

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

.card-status {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(10, 15, 25, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-status.active {
  color: #06131a;
  background: linear-gradient(120deg, rgba(90, 224, 255, 0.9), rgba(127, 123, 255, 0.9));
}

.card-body h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.card-body p {
  color: var(--muted);
  font-size: 15px;
}

.card-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), rgba(90, 224, 255, 0.35), transparent 60%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

.card-active:hover .card-glow {
  opacity: 1;
}

.has-tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 18px;
  left: 18px;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(10, 15, 25, 0.85);
  color: var(--text);
  font-size: 12px;
  opacity: 0;
  transform: translateY(6px);
  transition: var(--transition);
  pointer-events: none;
}

.has-tooltip:hover::after,
.has-tooltip:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.card-disabled {
  opacity: 0.5;
  filter: grayscale(0.4);
}

.card-disabled .card-media {
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-weight: 600;
}

.card-disabled .placeholder {
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card-disabled .warning {
  display: inline-block;
  margin-top: 16px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: transparent;
  transition: var(--transition);
}

.card-disabled:hover {
  border-color: rgba(255, 77, 90, 0.6);
  box-shadow: 0 0 20px rgba(255, 77, 90, 0.3);
  animation: shake 300ms ease-in-out;
}

.card-disabled:hover .warning {
  color: var(--warning);
  border-color: rgba(255, 77, 90, 0.6);
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-3px);
  }
  50% {
    transform: translateX(3px);
  }
  75% {
    transform: translateX(-2px);
  }
  100% {
    transform: translateX(0);
  }
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px clamp(20px, 6vw, 120px) 40px;
  color: var(--muted);
}

.site-footer a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.site-footer svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.site-footer a:hover {
  color: var(--text);
  transform: translateY(-2px);
}

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 6, 10, 0.65);
  backdrop-filter: blur(8px);
}

.modal-card {
  position: relative;
  max-width: 520px;
  width: min(90vw, 520px);
  padding: 32px;
  background: rgba(18, 24, 38, 0.92);
  border: 1px solid rgba(120, 140, 180, 0.2);
  border-radius: 20px;
  box-shadow: var(--shadow);
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-card h3 {
  font-size: 24px;
}

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

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
}

@media (max-width: 720px) {
  .hero {
    padding-bottom: 80px;
  }

  .site-footer {
    flex-direction: column;
    gap: 16px;
  }
}