/* ==========================================================================
   Notifly — shared design system
   Modern, accessible, dependency-free. Light + dark (prefers-color-scheme).
   ========================================================================== */

:root {
  /* Brand */
  --indigo: #6366f1;
  --indigo-600: #5b5ef0;
  --indigo-700: #4f46e5;
  --violet: #8b5cf6;
  --sky: #38bdf8;
  --grad: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #38bdf8 120%);
  --grad-soft: linear-gradient(135deg, rgba(99, 102, 241, 0.14), rgba(56, 189, 248, 0.14));

  /* Light theme */
  --bg: #fbfcff;
  --bg-tint: #f3f5fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #0e1525;
  --muted: #59647a;
  --border: #e8ebf3;
  --ring: rgba(99, 102, 241, 0.35);

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-md: 0 8px 24px -8px rgba(16, 24, 40, 0.18);
  --shadow-lg: 0 24px 60px -20px rgba(16, 24, 40, 0.28);
  --shadow-glow: 0 16px 50px -16px rgba(99, 102, 241, 0.55);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 26px;
  --r-full: 999px;

  --container: 1080px;
  --doc: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090d1a;
    --bg-tint: #0d1322;
    --surface: #111829;
    --surface-2: #0d1322;
    --text: #eaeefb;
    --muted: #9aa6bd;
    --border: #1f2942;
    --ring: rgba(139, 92, 246, 0.5);
    --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 30px 70px -24px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 18px 60px -18px rgba(99, 102, 241, 0.5);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(99, 102, 241, 0.10), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(56, 189, 248, 0.10), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.65;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--indigo-700); text-decoration: none; }
a:hover { text-decoration: underline; }
@media (prefers-color-scheme: dark) { a { color: #b3b9ff; } }

img, svg { display: block; max-width: 100%; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- Nav -------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 750; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-badge {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: var(--grad);
  display: grid; place-items: center;
  box-shadow: var(--shadow-glow);
}
.brand-badge svg { width: 19px; height: 19px; color: #fff; }
.brand-name { font-size: 1.18rem; letter-spacing: -0.02em; }
.brand-name b { color: var(--indigo-700); }
@media (prefers-color-scheme: dark) { .brand-name b { color: #aab0ff; } }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 0.95rem; font-weight: 550; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { .nav-links .hide-sm { display: none; } }

/* ---------- Buttons ---------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: var(--r-full);
  font-weight: 650; font-size: 0.96rem;
  border: 1px solid transparent;
  cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--ring); }

/* ---------- Hero ------------------------------------------------------- */
.hero { padding: 84px 0 48px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 13px; margin-bottom: 22px;
  font-size: 0.8rem; font-weight: 650; letter-spacing: 0.02em;
  color: var(--indigo-700);
  background: var(--grad-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
}
@media (prefers-color-scheme: dark) { .eyebrow { color: #c2c6ff; } }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--indigo); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.18); }
h1.display {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.04; letter-spacing: -0.035em; font-weight: 800;
  margin: 0 0 18px;
}
.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero p.sub { max-width: 620px; margin: 0 auto 30px; font-size: clamp(1.05rem, 2.2vw, 1.28rem); color: var(--muted); }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 0.84rem; color: var(--muted); }

/* ---------- Phone mockup ---------------------------------------------- */
.mockup-wrap { display: flex; justify-content: center; margin-top: 56px; }
.phone {
  width: 300px; border-radius: 38px;
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 14px;
}
.phone-screen {
  border-radius: 26px; overflow: hidden;
  background: var(--surface-2); border: 1px solid var(--border);
  padding: 14px 12px 18px;
}
.phone-top { display: flex; align-items: center; gap: 9px; padding: 4px 4px 12px; border-bottom: 1px solid var(--border); }
.phone-top .av { width: 30px; height: 30px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; }
.phone-top .av svg { width: 16px; height: 16px; color: #fff; }
.phone-top .who { font-weight: 700; font-size: 0.86rem; }
.phone-top .who small { display: block; font-weight: 500; color: var(--muted); font-size: 0.72rem; }
.verified { margin-left: auto; color: var(--indigo); }
.verified svg { width: 18px; height: 18px; }
.bubble {
  margin: 12px 6px; padding: 11px 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px 16px 16px 4px;
  font-size: 0.86rem; box-shadow: var(--shadow-sm);
}
.bubble .ttl { font-weight: 700; }
.bubble + .bubble { border-radius: 16px; }
.bubble .time { display: block; margin-top: 6px; font-size: 0.68rem; color: var(--muted); }
.reply-chips { display: flex; gap: 7px; flex-wrap: wrap; margin: 4px 6px; }
.reply-chips span { font-size: 0.74rem; font-weight: 600; color: var(--indigo-700); border: 1px solid var(--ring); padding: 6px 11px; border-radius: var(--r-full); }
@media (prefers-color-scheme: dark) { .reply-chips span { color: #c2c6ff; } }

/* ---------- Sections --------------------------------------------------- */
section { padding: 64px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); letter-spacing: -0.03em; margin: 0 0 12px; font-weight: 800; }
.section-head p { color: var(--muted); font-size: 1.08rem; margin: 0; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 26px;
  box-shadow: var(--shadow-sm); transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--ring); }
.card .ico {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 16px;
  display: grid; place-items: center; color: #fff; background: var(--grad);
  box-shadow: var(--shadow-glow);
}
.card .ico svg { width: 23px; height: 23px; }
.card h3 { margin: 0 0 7px; font-size: 1.12rem; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }

/* steps */
.steps { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); counter-reset: step; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 26px 24px; box-shadow: var(--shadow-sm); }
.step .n { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff; background: var(--grad); margin-bottom: 14px; box-shadow: var(--shadow-glow); }
.step h3 { margin: 0 0 6px; font-size: 1.08rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* category chips */
.chips { display: flex; flex-wrap: wrap; gap: 11px; justify-content: center; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px; font-weight: 600; font-size: 0.95rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-full); box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.chip:hover { transform: translateY(-2px); border-color: var(--ring); text-decoration: none; }
.chip .emoji { font-size: 1.05rem; }
.chip.soon { color: var(--muted); }
.chip.soon::after { content: "soon"; font-size: 0.66rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--violet); background: var(--grad-soft); padding: 2px 7px; border-radius: var(--r-full); }

/* ---------- CTA band --------------------------------------------------- */
.cta {
  margin: 8px auto 0; max-width: var(--container);
  text-align: center; color: #fff;
  background: var(--grad);
  border-radius: var(--r-xl);
  padding: 56px 28px;
  box-shadow: var(--shadow-glow);
}
.cta h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); margin: 0 0 12px; letter-spacing: -0.03em; }
.cta p { margin: 0 auto 26px; max-width: 520px; opacity: 0.92; font-size: 1.06rem; }
.cta .btn-ghost { background: rgba(255, 255, 255, 0.14); color: #fff; border-color: rgba(255, 255, 255, 0.4); backdrop-filter: blur(4px); }
.cta .btn-light { background: #fff; color: var(--indigo-700); box-shadow: var(--shadow-md); }
.cta .btn-light:hover { transform: translateY(-2px); }

/* ---------- Footer ----------------------------------------------------- */
.footer { margin-top: 72px; border-top: 1px solid var(--border); background: var(--surface); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 44px 24px 30px; display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; }
.footer .brand-name { font-size: 1.05rem; }
.footer .tag { color: var(--muted); font-size: 0.92rem; max-width: 320px; margin: 12px 0 0; }
.footer nav { display: flex; gap: 40px; flex-wrap: wrap; }
.footer .col h4 { margin: 0 0 12px; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.footer .col a { display: block; color: var(--text); font-size: 0.95rem; margin-bottom: 9px; }
.footer .col a:hover { color: var(--indigo-700); }
.footer-base { border-top: 1px solid var(--border); }
.footer-base .row { max-width: var(--container); margin: 0 auto; padding: 18px 24px; display: flex; flex-wrap: wrap; gap: 10px 18px; justify-content: space-between; color: var(--muted); font-size: 0.84rem; }

/* ---------- Document pages (Terms / Privacy) --------------------------- */
.doc { max-width: var(--doc); margin: 0 auto; padding: 52px 24px 24px; }
.doc-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-xl); padding: 48px 52px; box-shadow: var(--shadow-md); }
@media (max-width: 620px) { .doc-card { padding: 30px 22px; } }
.doc h1 { font-size: clamp(2rem, 5vw, 2.6rem); letter-spacing: -0.03em; margin: 0 0 6px; }
.doc .updated { color: var(--muted); font-size: 0.9rem; margin: 0 0 26px; }
.doc h2 { font-size: 1.32rem; letter-spacing: -0.015em; margin: 38px 0 10px; scroll-margin-top: 80px; }
.doc h3 { font-size: 1.05rem; margin: 22px 0 8px; }
.doc p, .doc li { color: var(--text); }
.doc ul, .doc ol { padding-left: 22px; }
.doc li { margin: 7px 0; }
.doc hr { border: none; border-top: 1px solid var(--border); margin: 34px 0; }
.lead { font-size: 1.1rem; color: var(--muted); }

.toc { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--r-md); padding: 18px 22px; margin: 26px 0 8px; }
.toc strong { display: block; margin-bottom: 8px; font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.toc ol { margin: 0; columns: 2; font-size: 0.95rem; }
.toc a { color: var(--text); }
.toc a:hover { color: var(--indigo-700); }
@media (max-width: 600px) { .toc ol { columns: 1; } }

.callout { background: var(--grad-soft); border: 1px solid var(--border); border-left: 4px solid var(--indigo); border-radius: var(--r-md); padding: 15px 18px; margin: 24px 0; font-size: 0.97rem; }

.ph { background: #fff3cd; color: #7a5b00; border-bottom: 1px dashed #e0a800; padding: 0 4px; border-radius: 3px; font-weight: 650; }
@media (prefers-color-scheme: dark) { .ph { background: #3a3206; color: #ffd86b; border-color: #806100; } }

.back-to-top { font-size: 0.88rem; }

/* breadcrumb on feed/category pages */
.crumb { font-size: 0.88rem; color: var(--muted); margin: 0 0 14px; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--indigo-700); }

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}