/* ===== Custom Properties ===== */
:root {
  --teal: #0D7377;
  --accent: #14FFEC;
  --terracotta: #E86A33;
  --amber: #F4A261;
  --bg: #FFFFFF;
  --bg-alt: #F5F5F5;
  --text: #2D2D2D;
  --text-muted: #666666;
  --card-bg: #FFFFFF;
  --card-border: #E0E0E0;
  --radius: 12px;
  --max-width: 960px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1A1A1A;
    --bg-alt: #242424;
    --text: #E5E5E5;
    --text-muted: #A0A0A0;
    --card-bg: #242424;
    --card-border: #333333;
    --teal: #14FFEC;
  }
}

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

/* ===== Base ===== */
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--teal);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

a:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--teal);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  z-index: 100;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}

/* ===== Header ===== */
.header {
  padding: 1.5rem 0;
}

.logo {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
}

/* ===== Hero ===== */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  color: var(--teal);
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
}

.hero-cta {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: opacity 0.2s;
}

@media (prefers-color-scheme: dark) {
  .hero-cta { color: #1A1A1A; }
}

.hero-cta:hover {
  text-decoration: none;
  opacity: 0.85;
}

/* ===== Projects ===== */
.projects {
  padding: 3rem 0;
}

.projects h2 {
  font-size: 1.75rem;
  margin-bottom: 2rem;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.card h3 { font-size: 1.125rem; }

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  flex: 1;
}

.card-link {
  font-weight: 600;
  font-size: 0.95rem;
}

.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
}

.badge-live {
  background: var(--teal);
  color: #fff;
}

@media (prefers-color-scheme: dark) {
  .badge-live { color: #1A1A1A; }
}

.badge-soon {
  background: var(--amber);
  color: #2D2D2D;
}

/* ===== Philosophy ===== */
.philosophy {
  padding: 3rem 0;
  background: var(--bg-alt);
}

.philosophy h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--teal);
}

.philosophy p {
  max-width: 600px;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.philosophy em { color: var(--terracotta); font-style: italic; }

/* ===== Footer ===== */
.footer {
  padding: 3rem 0 2rem;
  text-align: center;
}

.footer-brand {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}