@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Syne:wght@400;600;700;800&display=swap');

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

:root {
  --bg: #08080e;
  --bg2: #0f0f1a;
  --card: #13131f;
  --card2: #1a1a2e;
  --border: #2a2a40;
  --accent: #7c3aed;
  --accent2: #4f46e5;
  --text: #e2e8f0;
  --muted: #64748b;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #38bdf8;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Header ───────────────────────────────── */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8,8,14,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.header-inner {
  max-width: 1100px; margin: 0 auto;
  height: 60px; display: flex; align-items: center; gap: 16px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 22px; }
.logo-name { font-size: 16px; font-weight: 800; letter-spacing: -0.01em; }
.logo-sub { font-size: 10px; color: var(--muted); font-family: 'DM Mono', monospace; }
.nav-pills { margin-left: auto; display: flex; gap: 8px; }
.pill { padding: 5px 14px; border-radius: 20px; font-size: 12px; cursor: pointer; transition: 0.2s; border: 1px solid var(--border); color: var(--muted); }
.pill.active { background: var(--accent); border-color: var(--accent); color: white; }

/* ── Screen system ────────────────────────── */
.screen { display: none; max-width: 1100px; margin: 0 auto; padding: 48px 24px 80px; }
.screen.active { display: block; }

/* ── Upload ───────────────────────────────── */
.hero { text-align: center; margin-bottom: 40px; }
.hero-label { font-family: 'DM Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.18em; margin-bottom: 16px; }
.hero-title { font-size: clamp(28px, 5vw, 54px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 18px; }
.gradient-text { background: linear-gradient(135deg, #a855f7, #6366f1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-sub { max-width: 560px; margin: 0 auto; color: var(--muted); font-size: 15px; line-height: 1.7; }

.upload-zone {
  max-width: 580px; margin: 0 auto 40px;
  border: 2px dashed var(--border); border-radius: 20px;
  padding: 60px 24px; text-align: center; cursor: pointer;
  transition: all 0.2s; background: rgba(255,255,255,0.01);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent); background: rgba(124,58,237,0.06);
}
.upload-icon { font-size: 52px; margin-bottom: 16px; }
.upload-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.upload-sub { font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.upload-hint { font-size: 11px; color: var(--border); font-family: 'DM Mono', monospace; }
.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; font-size: inherit; font-family: inherit; text-decoration: underline; }

.features-grid { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 640px; margin: 0 auto; }
.feature-pill { background: var(--card); border: 1px solid var(--border); border-radius: 20px; padding: 7px 16px; font-size: 12px; color: var(--muted); }

/* ── Progress ─────────────────────────────── */
.progress-container { max-width: 440px; margin: 80px auto; text-align: center; }
.progress-spinner { font-size: 64px; animation: spin 2s linear infinite; margin-bottom: 28px; }
@keyframes spin { to { transform: rotate(360deg); } }
.progress-title { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.progress-label { font-family: 'DM Mono', monospace; font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.progress-bar-wrap { background: rgba(255,255,255,0.08); border-radius: 100px; height: 6px; overflow: hidden; }
.progress-bar { height: 100%; background: linear-gradient(90deg, #a855f7, #6366f1); border-radius: 100px; transition: width 0.5s ease; }
.progress-pct { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--muted); margin-top: 8px; text-align: right; }

/* ── Results ──────────────────────────────── */
.results-toolbar {
  display: flex; justify-content: space-between;
  align-items: center; margin-bottom: 32px;
  flex-wrap: wrap; gap: 12px;
}
.btn-primary { background: linear-gradient(135deg, #a855f7, #6366f1); border: none; color: white; padding: 11px 24px; border-radius: 10px; cursor: pointer; font-family: 'Syne', sans-serif; font-size: 14px; font-weight: 700; transition: 0.15s; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(124,58,237,0.35); }
.btn-secondary { background: var(--card); border: 1px solid var(--border); color: var(--muted); padding: 10px 20px; border-radius: 10px; cursor: pointer; font-family: 'Syne', sans-serif; font-size: 13px; transition: 0.15s; }
.btn-secondary:hover { color: var(--text); border-color: var(--accent); }

.results-hero {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px; margin-bottom: 24px;
}
.score-hero-card, .summary-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 18px; padding: 24px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.summary-card { align-items: stretch; }
.score-label-sm { font-family: 'DM Mono', monospace; font-size: 10px; color: var(--accent); letter-spacing: 0.14em; }
.score-donut-wrap { position: relative; width: 130px; height: 130px; }
.score-center-text { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; flex-direction: column; }
.score-big { font-size: 32px; font-weight: 800; }
.score-denom { font-size: 11px; color: var(--muted); }
.style-badge { background: rgba(124,58,237,0.2); border: 1px solid rgba(124,58,237,0.4); color: #c084fc; border-radius: 8px; padding: 5px 14px; font-family: 'DM Mono', monospace; font-size: 12px; text-align: center; }

/* ── Section ──────────────────────────────── */
.section { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 24px; margin-bottom: 20px; }
.section-header { font-family: 'DM Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 18px; }

/* ── Score grid ───────────────────────────── */
.score-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }
.score-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 12px; padding: 16px; text-align: center; }
.score-card-num { font-size: 28px; font-weight: 800; }
.score-card-label { font-size: 10px; color: var(--muted); font-family: 'DM Mono', monospace; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }
.score-card-bar { background: rgba(255,255,255,0.08); border-radius: 4px; height: 4px; margin-top: 10px; overflow: hidden; }
.score-card-bar-fill { height: 100%; border-radius: 4px; transition: width 0.8s ease; }

/* ── Palette ──────────────────────────────── */
.palette-row { display: flex; flex-wrap: wrap; gap: 12px; }
.swatch-item { display: flex; flex-direction: column; align-items: center; gap: 5px; cursor: pointer; }
.swatch-color { width: 48px; height: 48px; border-radius: 10px; border: 2px solid rgba(255,255,255,0.1); transition: transform 0.15s; }
.swatch-item:hover .swatch-color { transform: scale(1.1); }
.swatch-hex { font-family: 'DM Mono', monospace; font-size: 9px; color: var(--muted); }
.swatch-pct { font-size: 9px; color: var(--border); }

/* ── Metrics grid ─────────────────────────── */
.metrics-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 18px; }
.metric-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.metric-box-label { font-size: 10px; color: var(--muted); font-family: 'DM Mono', monospace; margin-bottom: 4px; }
.metric-box-val { font-size: 20px; font-weight: 700; }
.metric-box-note { font-size: 10px; color: var(--muted); margin-top: 2px; }

/* ── Table ────────────────────────────────── */
.pairs-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 400px; }
.data-table th { background: var(--card2); color: var(--muted); font-size: 10px; font-family: 'DM Mono', monospace; text-transform: uppercase; letter-spacing: 0.08em; padding: 10px 12px; text-align: left; }
.data-table td { padding: 9px 12px; border-bottom: 1px solid var(--border); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.pass { color: var(--success); font-weight: 700; }
.fail { color: var(--danger); }

/* ── Layout section ───────────────────────── */
.layout-grid { display: grid; grid-template-columns: 1fr 280px; gap: 20px; }
.metrics-col { display: flex; flex-direction: column; gap: 10px; }

/* ── Suggestions ──────────────────────────── */
#suggestions-list { display: flex; flex-direction: column; gap: 12px; }
.suggestion-card { display: flex; gap: 0; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.suggestion-stripe { width: 4px; flex-shrink: 0; }
.suggestion-body { padding: 14px 16px; flex: 1; background: var(--bg2); }
.suggestion-top { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.suggestion-issue { font-weight: 700; font-size: 14px; }
.priority-badge { font-family: 'DM Mono', monospace; font-size: 9px; padding: 2px 8px; border-radius: 4px; font-weight: 600; letter-spacing: 0.08em; }
.cat-badge { font-size: 10px; color: var(--muted); font-family: 'DM Mono', monospace; margin-left: auto; }
.suggestion-text { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ── Input Card & Tabs ────────────────────── */
.input-card {
  max-width: 620px; margin: 0 auto 40px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 20px; overflow: hidden;
}
.tab-row { display: flex; border-bottom: 1px solid var(--border); }
.tab-btn { flex: 1; padding: 14px 20px; background: none; border: none; color: var(--muted); font-family: 'Syne', sans-serif; font-size: 14px; font-weight: 600; cursor: pointer; transition: 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; }
.tab-btn:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.tab-btn.active { color: var(--text); border-bottom: 2px solid var(--accent); background: rgba(124,58,237,0.06); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.input-card .upload-zone { max-width: 100%; margin: 0; border: none; border-radius: 0; background: transparent; }
.input-card .upload-zone:hover { background: rgba(124,58,237,0.04); }

/* ── URL Panel ────────────────────────────── */
.url-panel { padding: 32px 28px; display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.url-icon { font-size: 44px; }
.url-desc { font-size: 14px; color: var(--muted); max-width: 420px; line-height: 1.6; }
.url-input-row { display: flex; gap: 10px; width: 100%; max-width: 480px; }
.url-input { flex: 1; background: var(--bg2); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; color: var(--text); font-family: 'DM Mono', monospace; font-size: 13px; outline: none; transition: border-color 0.2s; min-width: 0; }
.url-input:focus { border-color: var(--accent); }
.url-input::placeholder { color: var(--muted); }
.btn-analyze { background: var(--accent); border: none; color: white; padding: 12px 22px; border-radius: 10px; cursor: pointer; font-family: 'Syne', sans-serif; font-size: 14px; font-weight: 700; white-space: nowrap; transition: 0.15s; }
.btn-analyze:hover { background: #6d28d9; transform: translateY(-1px); }
.url-examples { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.url-ex-label { font-size: 11px; color: var(--muted); font-family: 'DM Mono', monospace; }
.url-ex-btn { background: var(--bg2); border: 1px solid var(--border); color: var(--muted); padding: 4px 12px; border-radius: 20px; font-size: 11px; cursor: pointer; font-family: 'DM Mono', monospace; transition: 0.15s; }
.url-ex-btn:hover { border-color: var(--accent); color: var(--accent); }
.url-note { font-size: 11px; color: var(--muted); font-family: 'DM Mono', monospace; background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: 8px; padding: 8px 14px; }

/* ── Source tag ───────────────────────────── */
.source-tag { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 6px 14px; font-family: 'DM Mono', monospace; font-size: 11px; color: var(--muted); max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.source-tag a { color: var(--accent); text-decoration: none; }
.source-tag a:hover { text-decoration: underline; }

/* ── Progress source ──────────────────────── */
.progress-source { margin-top: 12px; font-family: 'DM Mono', monospace; font-size: 11px; color: var(--muted); min-height: 18px; }

/* ── Toast ────────────────────────────────── */
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--card2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 18px; font-size: 13px; opacity: 0; pointer-events: none; transition: opacity 0.3s; z-index: 9999; }
.toast.show { opacity: 1; }

/* ── Scrollbar ────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ════════════════════════════════════════════
   MOBILE RESPONSIVE — max 768px (tablets)
   ════════════════════════════════════════════ */
@media (max-width: 768px) {

  /* Screen padding */
  .screen { padding: 24px 16px 60px; }

  /* Hero text */
  .hero { margin-bottom: 28px; }
  .hero-sub { font-size: 14px; }

  /* Results toolbar — stack vertically */
  .results-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .results-toolbar button { width: 100%; text-align: center; }
  .source-tag { max-width: 100%; }

  /* Hero score — stack vertically */
  .results-hero {
    grid-template-columns: 1fr;
  }

  /* Layout section — stack vertically */
  .layout-grid {
    grid-template-columns: 1fr;
  }

  /* Score grid — 2 columns on tablet */
  .score-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Metrics grid — 1 column */
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  /* URL panel padding */
  .url-panel { padding: 24px 16px; }

  /* Tab buttons smaller */
  .tab-btn { font-size: 12px; padding: 12px 10px; }

  /* Input card */
  .input-card { margin: 0 0 32px; }

  /* Upload zone */
  .upload-zone { padding: 40px 16px; }
  .upload-icon { font-size: 40px; }
  .upload-title { font-size: 16px; }

  /* Suggestion issue text smaller */
  .suggestion-issue { font-size: 13px; }

  /* Features grid */
  .feature-pill { font-size: 11px; padding: 6px 12px; }

  /* Buttons full width */
  .btn-primary { width: 100%; text-align: center; }
}

/* ════════════════════════════════════════════
   MOBILE RESPONSIVE — max 480px (phones)
   ════════════════════════════════════════════ */
@media (max-width: 480px) {

  /* Header */
  .logo-name { font-size: 14px; }
  .logo-sub { display: none; }

  /* Score grid — 2 columns */
  .score-grid { grid-template-columns: repeat(2, 1fr); }

  /* Score card smaller */
  .score-card { padding: 12px; }
  .score-card-num { font-size: 24px; }

  /* Hero score donut smaller */
  .score-donut-wrap { width: 110px; height: 110px; }
  .score-big { font-size: 26px; }

  /* URL input row — stack vertically */
  .url-input-row { flex-direction: column; }
  .btn-analyze { width: 100%; }

  /* Palette swatches smaller */
  .swatch-color { width: 38px; height: 38px; }
  .swatch-hex { font-size: 8px; }

  /* Section padding */
  .section { padding: 16px; }

  /* Progress container */
  .progress-container { margin: 40px auto; padding: 0 16px; }
  .progress-spinner { font-size: 48px; }
  .progress-title { font-size: 18px; }

  /* Toast position */
  .toast { bottom: 16px; right: 16px; left: 16px; text-align: center; }

  /* Table font size */
  .data-table { font-size: 11px; }
  .data-table td, .data-table th { padding: 8px; }
}
.header-auth {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}