/* ==========================================================================
   Caller ID API — frontend design system
   Build-free: plain CSS, theme-aware (light/dark), responsive.
   ========================================================================== */

:root {
  --bg: #0b0d12;
  --bg-elev: #12151d;
  --bg-elev-2: #191d28;
  --border: #262b38;
  --border-strong: #333a4b;
  --text: #e7e9ee;
  --text-muted: #9aa3b2;
  --text-faint: #6b7280;
  --accent: #6366f1;
  --accent-hover: #7c7ef4;
  --accent-soft: rgba(99, 102, 241, 0.14);
  --success: #22c55e;
  --success-soft: rgba(34, 197, 94, 0.14);
  --warning: #f59e0b;
  --warning-soft: rgba(245, 158, 11, 0.14);
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.14);
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.6);
  --maxw: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --mono: "SF Mono", ui-monospace, "Cascadia Code", "Fira Code", Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fa;
    --bg-elev: #ffffff;
    --bg-elev-2: #f1f3f7;
    --border: #e4e7ec;
    --border-strong: #d3d8e0;
    --text: #131722;
    --text-muted: #5a6472;
    --text-faint: #8a93a3;
    --accent-soft: rgba(99, 102, 241, 0.1);
    --shadow: 0 10px 40px -18px rgba(20, 25, 45, 0.25);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.4em; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
p { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--text-muted); }
.faint { color: var(--text-faint); }
.mono { font-family: var(--mono); }
.center { text-align: center; }
.hidden { display: none !important; }
.nowrap { white-space: nowrap; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s, opacity 0.15s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-elev-2); text-decoration: none; }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.btn-danger:hover { background: var(--danger); color: #fff; text-decoration: none; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
.badge-success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-warning { background: var(--warning-soft); color: var(--warning); border-color: transparent; }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

/* ---- Cards ---- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin-top: 0; }

/* ---- Forms ---- */
label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
input, select {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field { margin-bottom: 16px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 0; }

/* ---- Top bar ---- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  display: grid; place-items: center; color: #fff; font-size: 1rem;
}
.nav-actions { display: flex; align-items: center; gap: 14px; }

/* ---- User chip ---- */
.user-chip { display: flex; align-items: center; gap: 10px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--bg-elev-2); object-fit: cover; border: 1px solid var(--border); }

/* ---- Hero ---- */
.hero { padding: clamp(48px, 10vw, 110px) 0 clamp(40px, 7vw, 80px); text-align: center; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 20px;
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); padding: 6px 14px; border-radius: 999px;
}
.hero p.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--text-muted); max-width: 640px; margin: 0 auto 32px; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.gradient-text {
  background: linear-gradient(120deg, var(--accent), #a855f7 60%, #ec4899);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---- Feature grid ---- */
.section { padding: clamp(40px, 7vw, 72px) 0; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 44px; }
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.feature .ficon {
  width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-size: 1.3rem; margin-bottom: 14px;
}
.feature h3 { font-size: 1.1rem; }
.feature p { color: var(--text-muted); margin: 0; font-size: 0.95rem; }

/* ---- Pricing ---- */
.plans { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.plan { position: relative; display: flex; flex-direction: column; }
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.plan .plan-name { font-size: 1.15rem; font-weight: 700; }
.plan .price { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.03em; margin: 10px 0 2px; }
.plan .price small { font-size: 0.9rem; font-weight: 500; color: var(--text-muted); }
.plan .quota { color: var(--text-muted); margin-bottom: 18px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 22px; display: grid; gap: 10px; }
.plan li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.92rem; }
.plan li::before { content: "✓"; color: var(--success); font-weight: 700; }
.plan .btn { margin-top: auto; }
.featured-tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700;
  padding: 4px 12px; border-radius: 999px; letter-spacing: 0.03em;
}

/* ---- Dashboard layout ---- */
.page { padding: 32px 0 64px; }
.page-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 6px; flex-wrap: wrap; }
.stack { display: grid; gap: 20px; }
.stat-row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.stat { background: var(--bg-elev-2); border-radius: var(--radius-sm); padding: 16px; }
.stat .label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); }
.stat .value { font-size: 1.7rem; font-weight: 700; margin-top: 4px; }

/* ---- Progress ---- */
.progress { height: 8px; background: var(--bg-elev-2); border-radius: 999px; overflow: hidden; margin-top: 8px; }
.progress > span { display: block; height: 100%; background: var(--accent); border-radius: 999px; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); font-weight: 600; }
tbody tr:last-child td { border-bottom: none; }

/* ---- Code / key display ---- */
.codeblock {
  font-family: var(--mono); font-size: 0.85rem; background: var(--bg-elev-2);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 14px; overflow-x: auto; white-space: pre; color: var(--text);
}
.keyline { display: flex; align-items: center; gap: 8px; }
.keyline code { font-family: var(--mono); background: var(--bg-elev-2); padding: 6px 10px; border-radius: 6px; font-size: 0.85rem; overflow-x: auto; }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(3px);
  display: grid; place-items: center; z-index: 50; padding: 20px;
}
.modal {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  width: 100%; max-width: 480px; padding: 24px; box-shadow: var(--shadow); max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin-top: 0; }
.modal-close { float: right; background: none; border: none; color: var(--text-muted); font-size: 1.4rem; cursor: pointer; line-height: 1; }

/* ---- Toast ---- */
.toasts { position: fixed; bottom: 20px; right: 20px; z-index: 100; display: grid; gap: 10px; }
.toast {
  background: var(--bg-elev); border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm); padding: 12px 16px; box-shadow: var(--shadow);
  min-width: 240px; max-width: 360px; font-size: 0.9rem; animation: slidein 0.2s ease;
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
@keyframes slidein { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }

/* ---- Misc ---- */
.divider { height: 1px; background: var(--border); margin: 24px 0; border: none; }
.footer { border-top: 1px solid var(--border); padding: 32px 0; color: var(--text-muted); font-size: 0.9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.spinner {
  width: 18px; height: 18px; border: 2px solid var(--border-strong);
  border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty { text-align: center; color: var(--text-muted); padding: 32px 16px; }
.section-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); font-weight: 600; margin-bottom: 12px; }