/* emad studio, inc. — website styles */

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

:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-hover: #1a1a28;
  --text: #e0e0e8;
  --text-dim: #808098;
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.15);
  --border: #252535;
  --mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Liberation Mono', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* --- Nav --- */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.wordmark span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-decoration: none;
  text-transform: lowercase;
  transition: color 0.2s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  transition: 0.2s;
}

/* --- Layout --- */

section {
  max-width: 900px;
  margin: 0 auto;
  padding: 6rem 2rem 2rem;
}

.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 10rem 2rem 6rem;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

h1 {
  font-family: var(--mono);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

h1 span {
  color: var(--accent);
}

.subtitle {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  margin-bottom: 2rem;
}

.hero-text {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 640px;
  line-height: 1.8;
}

h2 {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

h2 span {
  color: var(--accent);
}

h3 {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.25rem;
  color: var(--text-dim);
}

p strong {
  color: var(--text);
  font-weight: 600;
}

/* --- Diagram --- */

.diagram-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem;
  margin: 2rem 0;
  overflow-x: auto;
}

.diagram-container svg {
  width: 100%;
  height: auto;
  max-width: 800px;
  display: block;
  margin: 0 auto;
}

.diagram-caption {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-align: center;
  margin-top: 1rem;
}

/* --- Performance Table --- */

.perf-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.perf-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.perf-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

.perf-table tr:hover td {
  background: var(--accent-dim);
  color: var(--text);
}

.perf-table .highlight {
  color: var(--accent);
  font-weight: 600;
}

/* --- Advantage List --- */

.advantages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

.advantage {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.advantage:hover {
  border-color: var(--accent);
}

.advantage h3 {
  margin-bottom: 0.5rem;
}

.advantage p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* --- Application Cards --- */

.app-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.app-card:hover {
  border-color: var(--accent);
}

.app-card h3 {
  margin-bottom: 0.5rem;
}

.app-card p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* --- Research --- */

.citation {
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.citation em {
  color: var(--text);
}

.citation .venue {
  color: var(--accent);
}

/* --- Contact --- */

.contact-section {
  text-align: center;
  padding-bottom: 6rem;
}

.contact-section h2 {
  border-bottom: none;
  text-align: center;
}

.contact-email {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent);
  padding: 0.75rem 2rem;
  border-radius: 4px;
  display: inline-block;
  margin: 1rem 0;
  transition: background 0.2s, color 0.2s;
}

.contact-email:hover {
  background: var(--accent);
  color: var(--bg);
}

/* --- Footer --- */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* --- Responsive --- */

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    flex-direction: column;
    padding: 1rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  h1 {
    font-size: 2rem;
  }

  .hero {
    padding: 8rem 1.5rem 4rem;
    min-height: auto;
  }

  section {
    padding: 4rem 1.5rem 2rem;
  }

  .advantages {
    grid-template-columns: 1fr;
  }

  .app-cards {
    grid-template-columns: 1fr;
  }

  .diagram-container {
    padding: 1rem;
  }
}