/* voip-stuff.net — Global Stylesheet */

:root {
  --color-bg: #0f1117;
  --color-bg-alt: #161923;
  --color-surface: #1c1f2e;
  --color-surface-hover: #242840;
  --color-border: #2a2e42;
  --color-text: #e0e2ec;
  --color-text-muted: #8e92a8;
  --color-heading: #f0f1f7;
  --color-accent: #4f8cff;
  --color-accent-hover: #6ba0ff;
  --color-accent-dim: rgba(79, 140, 255, 0.12);
  --color-green: #34d399;
  --color-green-dim: rgba(52, 211, 153, 0.12);
  --color-orange: #fb923c;
  --color-orange-dim: rgba(251, 146, 60, 0.12);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'JetBrains Mono', 'Cascadia Code', monospace;
  --max-width: 1140px;
  --radius: 8px;
  --radius-lg: 12px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  color: var(--color-accent-hover);
}

h1, h2, h3, h4 {
  color: var(--color-heading);
  line-height: 1.3;
  font-weight: 700;
}

img {
  max-width: 100%;
  height: auto;
}

/* ── Header / Navigation ────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0;
  padding-bottom: 0;
  min-height: 64px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-heading);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo span {
  color: var(--color-accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.main-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--color-heading);
  background: var(--color-surface);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
}

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

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}
.hero .tagline {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}
.btn-outline {
  border-color: var(--color-border);
  color: var(--color-text);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.btn-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Cards ────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}
.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── Badges / Tags ────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}
.badge-available {
  background: var(--color-green-dim);
  color: var(--color-green);
}
.badge-coming {
  background: var(--color-orange-dim);
  color: var(--color-orange);
}
.badge-blue {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

/* ── Section Styles ───────────────────────────────────── */
.section {
  padding: 3rem 0;
}
.section-alt {
  background: var(--color-bg-alt);
}
.section-title {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}
.section-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 600px;
}

/* ── Project Detail Page ──────────────────────────────── */
.project-header {
  padding: 3rem 0 2rem;
}
.project-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 0.75rem;
}
.project-header .lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 720px;
}

.feature-list {
  list-style: none;
  padding: 0;
}
.feature-list li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.75rem;
  color: var(--color-text);
}
.feature-list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-weight: 700;
}

.steps {
  counter-reset: step;
}
.step {
  position: relative;
  padding: 1.25rem 1.5rem 1.25rem 3.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1.1rem;
  top: 1.25rem;
  width: 1.6rem;
  height: 1.6rem;
  background: var(--color-accent-dim);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}
.step p,
.step code {
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

code, .code-block {
  font-family: var(--font-mono);
}
code {
  background: var(--color-surface);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--color-accent);
}
.code-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 1rem 0;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.info-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
}
.info-box h4 {
  margin-bottom: 0.5rem;
}

/* ── Requirements Table ───────────────────────────────── */
.req-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
.req-table th,
.req-table td {
  text-align: left;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.92rem;
}
.req-table th {
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}
.req-table td {
  color: var(--color-text);
}

/* ── Roadmap Timeline ─────────────────────────────────── */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.55rem;
  top: 0.45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
}
.timeline-item.future::before {
  background: var(--color-border);
}
.timeline-item h4 {
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}
.timeline-item p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* ── Footer ───────────────────────────────────────────── */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding: 2.5rem 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: start;
  flex-wrap: wrap;
  gap: 2rem;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  color: var(--color-text-muted);
}
.footer-links a:hover {
  color: var(--color-heading);
}
.sponsor-note {
  font-size: 0.82rem;
  margin-top: 0.5rem;
}

/* ── Screenshots ──────────────────────────────────────── */
.screenshot {
  margin: 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.screenshot img {
  display: block;
  width: 100%;
  height: auto;
}
.screenshot-caption {
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.screenshot-sm {
  max-width: 700px;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 0.75rem 1rem;
  }
  .main-nav.open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .hero {
    padding: 2.5rem 0 2rem;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-links {
    justify-content: center;
  }
}