/* ============================================================
   Vocal Vantage — design system
   Clean, minimal light theme (Linear/Notion style)
   ============================================================ */
:root {
  --bg:            #ffffff;
  --bg-2:          #f7f8fa;
  --panel:         #ffffff;
  --panel-2:       #f1f2f4;
  --border:        rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --text:          #18181b;
  --muted:         #6b7280;
  --muted-2:       #9ca3af;
  --violet:        #2563eb;
  --fuchsia:       #2563eb;
  --accent:        #2563eb;
  --green:         #16a34a;
  --amber:         #d97706;
  --red:           #dc2626;
  --grad:          #2563eb;
  --shadow:        0 4px 16px rgba(0, 0, 0, 0.06);
  --radius:        10px;
  --radius-sm:     8px;
  --maxw:          1180px;
  --font:          "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 70px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark { display: inline-grid; place-items: center; }
.brand-name {
  font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em; color: var(--text);
}
.main-nav { display: flex; gap: 26px; margin-left: 18px; }
.main-nav a { color: var(--muted); font-size: .95rem; font-weight: 500; transition: color .2s; }
.main-nav a:hover { color: var(--text); }
.header-actions { margin-left: auto; display: flex; gap: 12px; align-items: center; }
.nav-toggle { display: none; background: none; border: 0; flex-direction: column; gap: 5px; cursor: pointer; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 8px; font-weight: 600; font-size: .94rem;
  cursor: pointer; border: 1px solid transparent; transition: transform .15s ease, box-shadow .2s, background .2s, border-color .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: #1d4ed8; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--panel-2); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero { padding: 80px 0 60px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 600;
  color: var(--accent); background: rgba(37,99,235,.08); border: 1px solid rgba(37,99,235,.18);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 22px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(22,163,74,.15); }
.hero h1 { font-size: clamp(2.2rem, 4.4vw, 3.4rem); line-height: 1.1; letter-spacing: -.03em; font-weight: 700; color: var(--text); }
.hero h1 .grad { color: var(--accent); }
.hero p.lead { color: var(--muted); font-size: 1.12rem; margin: 22px 0 30px; max-width: 540px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 42px; }
.hero-stats .stat strong { display: block; font-size: 1.6rem; font-weight: 700; color: var(--text); }
.hero-stats .stat span { color: var(--muted); font-size: .85rem; }

/* Hero visual: a faux report card */
.hero-card {
  background: var(--panel);
  border: 1px solid var(--border); border-radius: 16px; padding: 24px;
  box-shadow: var(--shadow); position: relative;
}
.hero-card .hc-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.hero-card .hc-top h3 { font-size: 1rem; }
.score-ring { display: grid; place-items: center; position: relative; width: 96px; height: 96px; margin: 6px auto 14px; }
.score-ring svg { transform: rotate(-90deg); }
.score-ring .ring-val { position: absolute; text-align: center; }
.score-ring .ring-val b { font-size: 1.5rem; }
.score-ring .ring-val span { display: block; font-size: .68rem; color: var(--muted); }
.hc-metric { display: flex; justify-content: space-between; padding: 11px 0; border-bottom: 1px solid var(--border); font-size: .92rem; }
.hc-metric:last-child { border-bottom: 0; }
.hc-metric .label { color: var(--muted); }
.hc-metric .val { font-weight: 700; }
.tag { font-size: .72rem; padding: 3px 9px; border-radius: 999px; font-weight: 600; }
.tag.good { background: rgba(22,163,74,.1); color: var(--green); }
.tag.warn { background: rgba(217,119,6,.1); color: var(--amber); }

/* ---------- Sections ---------- */
section { padding: 72px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head .kicker { color: var(--accent); font-weight: 700; font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; }
.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); letter-spacing: -.02em; margin: 10px 0 12px; color: var(--text); }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .2s, border-color .2s, box-shadow .2s;
}
.feature:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.feature .ficon {
  width: 44px; height: 44px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(37,99,235,.08); color: var(--accent); margin-bottom: 16px;
}
.feature h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: .95rem; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; position: relative; }
.step .num {
  width: 34px; height: 34px; border-radius: 8px; background: var(--accent); color: white;
  display: grid; place-items: center; font-weight: 700; margin-bottom: 14px;
}
.step h3 { font-size: 1.02rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: .9rem; }

/* Metrics band */
.metrics-band { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.metric-card { text-align: center; padding: 30px 20px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
.metric-card .big { font-size: 2.4rem; font-weight: 700; color: var(--accent); }
.metric-card h3 { margin: 6px 0; font-size: 1.05rem; }
.metric-card p { color: var(--muted); font-size: .9rem; }

/* CTA */
.cta-band { text-align: center; }
.cta-inner {
  background: var(--bg-2);
  border: 1px solid var(--border); border-radius: 20px; padding: 56px 32px;
}
.cta-inner h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 12px; color: var(--text); }
.cta-inner p { color: var(--muted); margin-bottom: 26px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-2); margin-top: 40px; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 32px;
  padding: 58px 24px 36px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-tagline { color: var(--muted); font-size: .95rem; max-width: 280px; }
.footer-col h4 { font-size: 1rem; margin-bottom: 18px; font-weight: 700; color: var(--text); }
.footer-col a { display: block; color: var(--muted); font-size: .94rem; margin-bottom: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--text); }
.social-row { display: flex; gap: 12px; }
.social-btn {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: var(--panel); border: 1px solid var(--border); color: var(--muted);
  transition: all .2s;
}
.social-btn:hover { color: var(--accent); border-color: var(--accent); background: rgba(37,99,235,.06); }
.footer-bottom { border-top: 1px solid var(--border); }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; padding: 22px 24px; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { color: var(--muted); font-size: .9rem; }
.footer-legal { display: flex; gap: 28px; }
.footer-legal a { color: var(--muted); font-size: .9rem; transition: color .2s; }
.footer-legal a:hover { color: var(--text); }

/* ---------- Auth pages ---------- */
.auth-wrap { min-height: calc(100vh - 70px); display: grid; place-items: center; padding: 48px 24px; }
.auth-card {
  width: 100%; max-width: 440px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 38px 34px; box-shadow: var(--shadow);
}
.auth-card h1 { font-size: 1.6rem; margin-bottom: 6px; color: var(--text); }
.auth-card .sub { color: var(--muted); margin-bottom: 26px; font-size: .95rem; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: 7px; color: var(--text); }
.field input {
  width: 100%; padding: 12px 14px; border-radius: 8px; background: var(--bg);
  border: 1px solid var(--border-strong); color: var(--text); font-size: .96rem; font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
}
.field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.auth-divider { display: flex; align-items: center; gap: 14px; margin: 22px 0; color: var(--muted-2); font-size: .82rem; }
.auth-divider::before, .auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.auth-switch { text-align: center; margin-top: 22px; color: var(--muted); font-size: .92rem; }
.auth-switch a { color: var(--accent); font-weight: 600; }
.form-error { background: rgba(220,38,38,.08); border: 1px solid rgba(220,38,38,.25); color: var(--red); padding: 10px 14px; border-radius: 8px; font-size: .88rem; margin-bottom: 18px; display: none; }
.form-error.show { display: block; }

/* ---------- Dashboard ---------- */
.dash { padding: 48px 0 80px; }
.dash-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 16px; margin-bottom: 34px; }
.dash-head h1 { font-size: 1.9rem; color: var(--text); }
.dash-head p { color: var(--muted); }
.badge-guest { font-size: .72rem; background: rgba(217,119,6,.1); color: var(--amber); padding: 4px 10px; border-radius: 999px; font-weight: 600; }

.upload-zone {
  border: 2px dashed var(--border-strong); border-radius: 14px; padding: 46px 28px; text-align: center;
  background: var(--panel); transition: border-color .2s, background .2s; cursor: pointer;
}
.upload-zone.drag { border-color: var(--accent); background: rgba(37,99,235,.04); }
.upload-zone .up-icon { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 14px; background: rgba(37,99,235,.08); color: var(--accent); display: grid; place-items: center; }
.upload-zone h3 { margin-bottom: 6px; color: var(--text); }
.upload-zone p { color: var(--muted); font-size: .92rem; }
.upload-zone .hint { font-size: .8rem; color: var(--muted-2); margin-top: 10px; }

.progress-box { display: none; margin-top: 22px; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 22px; }
.progress-box.show { display: block; }
.progress-steps { display: flex; flex-direction: column; gap: 12px; }
.pstep { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .92rem; }
.pstep .pdot { width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border-strong); flex-shrink: 0; display: grid; place-items: center; font-size: .7rem; }
.pstep.active { color: var(--text); }
.pstep.active .pdot { border-color: var(--accent); }
.pstep.done .pdot { background: var(--green); border-color: var(--green); color: white; }
.spinner { width: 14px; height: 14px; border: 2px solid rgba(37,99,235,.2); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.history { margin-top: 48px; }
.history h2 { font-size: 1.3rem; margin-bottom: 18px; color: var(--text); }
.analysis-list { display: grid; gap: 12px; }
.analysis-row {
  display: flex; align-items: center; gap: 16px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 20px; transition: border-color .2s, transform .15s;
}
.analysis-row:hover { border-color: var(--border-strong); transform: translateX(2px); }
.analysis-row .ar-score { width: 50px; height: 50px; border-radius: 10px; display: grid; place-items: center; font-weight: 700; font-size: 1.05rem; background: rgba(37,99,235,.08); color: var(--accent); flex-shrink: 0; }
.analysis-row .ar-main { flex: 1; min-width: 0; }
.analysis-row .ar-main h4 { font-size: .98rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.analysis-row .ar-main p { color: var(--muted); font-size: .84rem; }
.empty-state { text-align: center; padding: 56px 20px; color: var(--muted); border: 1px dashed var(--border-strong); border-radius: 14px; }

/* ---------- Report page ---------- */
.report { padding: 44px 0 80px; }
.report-top { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 20px; margin-bottom: 30px; }
.report-top h1 { font-size: 1.7rem; margin-bottom: 4px; color: var(--text); }
.report-top .meta { color: var(--muted); font-size: .9rem; }
.report-grid { display: grid; grid-template-columns: 320px 1fr; gap: 24px; align-items: start; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.card h3 { font-size: 1.05rem; margin-bottom: 16px; color: var(--text); }
.big-score { text-align: center; }
.big-score .score-ring { width: 150px; height: 150px; }
.big-score .score-ring .ring-val b { font-size: 2.4rem; }
.metric-rows { display: grid; gap: 2px; }
.metric-rows .mr { display: flex; justify-content: space-between; padding: 13px 0; border-bottom: 1px solid var(--border); }
.metric-rows .mr:last-child { border-bottom: 0; }
.metric-rows .mr .label { color: var(--muted); font-size: .92rem; }
.metric-rows .mr .val { font-weight: 700; }
.filler-bars { display: grid; gap: 12px; }
.filler-bar .fb-top { display: flex; justify-content: space-between; font-size: .9rem; margin-bottom: 5px; }
.filler-bar .track { height: 8px; background: var(--bg-2); border-radius: 999px; overflow: hidden; }
.filler-bar .fill { height: 100%; background: var(--accent); border-radius: 999px; }
.insight-list { list-style: none; display: grid; gap: 12px; }
.insight-list li { display: flex; gap: 12px; align-items: flex-start; font-size: .94rem; color: var(--text); }
.insight-list li .ic { flex-shrink: 0; margin-top: 2px; }
.insight-list.strengths li .ic { color: var(--green); }
.insight-list.improve li .ic { color: var(--amber); }
.insight-list.tips li .ic { color: var(--accent); }
.transcript-box { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 18px; color: var(--muted); font-size: .94rem; line-height: 1.8; max-height: 320px; overflow-y: auto; }
.transcript-box mark { background: rgba(217,119,6,.15); color: var(--amber); border-radius: 4px; padding: 0 3px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: .78rem; font-weight: 600; }
.pill.high { background: rgba(22,163,74,.1); color: var(--green); }
.pill.medium { background: rgba(217,119,6,.1); color: var(--amber); }
.pill.low { background: rgba(220,38,38,.1); color: var(--red); }
.report-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.skeleton { background: linear-gradient(90deg, var(--panel), var(--panel-2), var(--panel)); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 8px; }
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: white;
  padding: 13px 22px; border-radius: 10px; box-shadow: var(--shadow); font-size: .92rem;
  opacity: 0; pointer-events: none; transition: all .3s ease; z-index: 100; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--red); }
.toast.success { background: var(--green); }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .features-grid, .metrics-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .report-grid { grid-template-columns: 1fr; }
  .main-nav, .header-actions { display: none; }
  .main-nav.open { display: flex; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; background: var(--bg); padding: 18px 24px; border-bottom: 1px solid var(--border); }
  .header-actions.open { display: flex; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; background: var(--bg); padding: 0 24px 18px; }
  .nav-toggle { display: flex; margin-left: auto; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 22px; }
}