/* ============================================================
   Marketing Copilot — app styles
   Design tokens follow the validated reference palette.
   ============================================================ */

:root {
  --surface-1: #fcfcfb;      /* card / chart surface */
  --plane:     #f9f9f7;      /* page background */
  --ink-1:     #0b0b0b;      /* primary text */
  --ink-2:     #52514e;      /* secondary text */
  --ink-3:     #898781;      /* muted / axis */
  --grid:      #e1e0d9;      /* hairline gridline */
  --baseline:  #c3c2b7;
  --border:    rgba(11,11,11,0.10);

  --series-1:  #2a78d6;      /* blue    — Google / primary */
  --series-2:  #1baf7a;      /* aqua    — Meta / secondary */
  --series-3:  #eda100;      /* yellow */
  --series-4:  #008300;      /* green */
  --series-5:  #4a3aa7;      /* violet */
  --series-6:  #e34948;      /* red */

  --seq-250: #86b6ef; --seq-300: #6da7ec; --seq-350: #5598e7;
  --seq-400: #3987e5; --seq-450: #2a78d6; --seq-500: #256abf;
  --seq-550: #1c5cab; --seq-600: #184f95;

  --status-good:     #0ca30c;
  --status-warning:  #fab219;
  --status-serious:  #ec835a;
  --status-critical: #d03b3b;
  --delta-good:      #006300;
  --delta-bad:       #c22a2a;

  --accent: var(--series-1);
  --accent-wash: rgba(42,120,214,0.10);
  --radius: 10px;
  --shadow: 0 1px 2px rgba(11,11,11,0.04);
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-1: #1a1a19;
    --plane:     #0d0d0d;
    --ink-1:     #ffffff;
    --ink-2:     #c3c2b7;
    --ink-3:     #898781;
    --grid:      #2c2c2a;
    --baseline:  #383835;
    --border:    rgba(255,255,255,0.10);

    --series-1:  #3987e5;
    --series-2:  #199e70;
    --series-3:  #c98500;
    --series-4:  #008300;
    --series-5:  #9085e9;
    --series-6:  #e66767;

    --delta-good: #0ca30c;
    --delta-bad:  #e66767;
    --accent: var(--series-1);
    --accent-wash: rgba(57,135,229,0.14);
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--plane);
  color: var(--ink-1);
  font-size: 14.5px;
  line-height: 1.5;
}

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: 224px 1fr;
  min-height: 100vh;
}
.sidebar {
  border-right: 1px solid var(--border);
  padding: 18px 12px;
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 2px;
  background: var(--surface-1);
}
.brand {
  font-weight: 700; font-size: 16px; padding: 6px 10px 16px;
  display: flex; align-items: center; gap: 8px;
}
.brand .dot { width: 10px; height: 10px; border-radius: 3px; background: var(--accent); display: inline-block; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px; cursor: pointer;
  color: var(--ink-2); border: none; background: none;
  font: inherit; text-align: left; width: 100%;
}
.nav-item:hover { background: var(--accent-wash); }
.nav-item.active { background: var(--accent-wash); color: var(--ink-1); font-weight: 600; }
.nav-item .ico { width: 18px; text-align: center; }
.sidebar .spacer { flex: 1; }
.sidebar .foot { font-size: 12px; color: var(--ink-3); padding: 8px 10px; }

.main { padding: 24px 28px 60px; max-width: 1160px; width: 100%; margin: 0 auto; }

.topbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-bottom: 18px;
}
.topbar h1 { font-size: 21px; margin: 0; flex: 1; }
.topbar .sub { color: var(--ink-2); font-size: 13px; width: 100%; margin-top: -6px; }

/* ---------- Cards ---------- */
.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.card h2 { font-size: 15px; margin: 0 0 4px; }
.card h3 { font-size: 14px; margin: 16px 0 6px; }
.card .card-sub { color: var(--ink-2); font-size: 12.5px; margin: 0 0 14px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; }
@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .app { grid-template-columns: 64px 1fr; }
  .nav-item .lbl, .brand .word, .sidebar .foot { display: none; }
}

/* ---------- Stat tiles ---------- */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px; margin-bottom: 18px;
}
.stat-tile {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow);
}
.stat-tile .label { font-size: 12.5px; color: var(--ink-2); }
.stat-tile .value { font-size: 26px; font-weight: 600; margin: 2px 0; }
.stat-tile .delta { font-size: 12px; font-weight: 600; }
.stat-tile .delta.up   { color: var(--delta-good); }
.stat-tile .delta.down { color: var(--delta-bad); }
.stat-tile .delta.flat { color: var(--ink-3); }
.stat-tile .delta .vs  { color: var(--ink-3); font-weight: 400; }
.stat-tile svg { display: block; margin-top: 6px; }

/* ---------- Tables ---------- */
table.data {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
table.data th {
  text-align: left; font-weight: 600; color: var(--ink-2);
  border-bottom: 1px solid var(--baseline);
  padding: 7px 10px 7px 0; white-space: nowrap;
}
table.data td {
  padding: 8px 10px 8px 0; border-bottom: 1px solid var(--grid);
  font-variant-numeric: tabular-nums;
}
table.data td.num, table.data th.num { text-align: right; }
table.data tr:last-child td { border-bottom: none; }
.table-scroll { overflow-x: auto; }

/* ---------- Score badges & status ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 700; border-radius: 6px;
  padding: 2px 8px;
}
.badge.grade-A { background: rgba(12,163,12,0.14);  color: var(--delta-good); }
.badge.grade-B { background: rgba(42,120,214,0.14); color: var(--series-1); }
.badge.grade-C { background: rgba(250,178,25,0.18); color: #8a6100; }
.badge.grade-D { background: rgba(236,131,90,0.18); color: #a34a22; }
.badge.grade-F { background: rgba(208,59,59,0.14);  color: var(--status-critical); }
@media (prefers-color-scheme: dark) {
  .badge.grade-C { color: #fab219; }
  .badge.grade-D { color: #ec835a; }
}
.pill {
  display: inline-block; font-size: 11.5px; font-weight: 600;
  padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border);
  color: var(--ink-2);
}
.pill.google { border-color: rgba(42,120,214,0.4); color: var(--series-1); }
.pill.meta   { border-color: rgba(27,175,122,0.4); color: var(--series-2); }

/* ---------- Insight cards ---------- */
.insight {
  border-left: 3px solid var(--accent);
  background: var(--accent-wash);
  border-radius: 0 8px 8px 0;
  padding: 12px 14px; margin: 10px 0; font-size: 13.5px;
}
.insight.warn    { border-left-color: var(--status-warning);  background: rgba(250,178,25,0.10); }
.insight.serious { border-left-color: var(--status-serious);  background: rgba(236,131,90,0.10); }
.insight.good    { border-left-color: var(--status-good);     background: rgba(12,163,12,0.08); }
.insight b { display: block; margin-bottom: 2px; }
.insight .why {
  margin-top: 6px; font-size: 12.5px; color: var(--ink-2);
}
.insight .why::before { content: "📖 Why this matters: "; font-weight: 600; }

/* ---------- Forms ---------- */
label.f { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-2); margin: 12px 0 4px; }
input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 8px 10px; font: inherit; font-size: 13.5px;
  border: 1px solid var(--baseline); border-radius: 8px;
  background: var(--surface-1); color: var(--ink-1);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
textarea { resize: vertical; min-height: 64px; }
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font: inherit; font-size: 13.5px; font-weight: 600;
  padding: 8px 16px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--baseline); background: var(--surface-1); color: var(--ink-1);
}
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn.danger { color: var(--status-critical); }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

/* drop zone */
.dropzone {
  border: 2px dashed var(--baseline); border-radius: var(--radius);
  padding: 34px 20px; text-align: center; color: var(--ink-2);
  cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: var(--accent-wash); }
.dropzone .big { font-size: 15px; font-weight: 600; color: var(--ink-1); }

/* ---------- Ad copy output ---------- */
.copy-block {
  border: 1px solid var(--grid); border-radius: 8px;
  padding: 10px 12px; margin: 8px 0; font-size: 13.5px;
  display: flex; gap: 10px; align-items: flex-start;
}
.copy-block .txt { flex: 1; }
.copy-block .meta-line { font-size: 11.5px; color: var(--ink-3); margin-top: 3px; }
.copy-block .chars { font-variant-numeric: tabular-nums; }
.copy-block .chars.over { color: var(--status-critical); font-weight: 700; }
.copy-btn {
  border: 1px solid var(--baseline); background: none; color: var(--ink-2);
  border-radius: 6px; font-size: 11.5px; padding: 2px 8px; cursor: pointer; flex-shrink: 0;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.framework-tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--accent); }

/* ad preview mocks */
.ad-preview-g {
  border: 1px solid var(--grid); border-radius: 10px; padding: 14px 16px; margin: 10px 0;
  background: var(--surface-1);
}
.ad-preview-g .ad-tag { font-size: 11px; font-weight: 700; }
.ad-preview-g .url { font-size: 12px; color: var(--ink-2); }
.ad-preview-g .headline { color: #1a0dab; font-size: 17px; margin: 2px 0; }
@media (prefers-color-scheme: dark) { .ad-preview-g .headline { color: #8ab4f8; } }
.ad-preview-g .desc { font-size: 13px; color: var(--ink-2); }

/* ---------- Learn / glossary ---------- */
.term {
  border-bottom: 1px dotted var(--ink-3); cursor: help; text-decoration: none; color: inherit;
}
.term:hover { border-bottom-color: var(--accent); color: var(--accent); }
.popover {
  position: absolute; z-index: 50; max-width: 340px;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: 0 6px 24px rgba(0,0,0,0.14);
  padding: 12px 14px; font-size: 13px;
}
.popover b { display: block; margin-bottom: 3px; }
.popover .formula {
  font-family: ui-monospace, Consolas, monospace; font-size: 12px;
  background: var(--plane); border-radius: 6px; padding: 4px 8px; margin: 6px 0; display: inline-block;
}
.popover .why { color: var(--ink-2); margin-top: 4px; }

.glossary-item { padding: 12px 0; border-bottom: 1px solid var(--grid); }
.glossary-item:last-child { border-bottom: none; }
.glossary-item b { font-size: 14px; }
.glossary-item .formula {
  font-family: ui-monospace, Consolas, monospace; font-size: 12px;
  background: var(--plane); border: 1px solid var(--grid); border-radius: 6px; padding: 2px 8px;
  display: inline-block; margin: 4px 0;
}
.lesson h3 { margin-top: 20px; }
.lesson p, .lesson li { color: var(--ink-2); font-size: 13.5px; }
.lesson li { margin: 4px 0; }

details.accordion {
  border: 1px solid var(--grid); border-radius: 8px; padding: 0 14px; margin: 8px 0;
}
details.accordion summary {
  cursor: pointer; font-weight: 600; padding: 11px 0; font-size: 14px; list-style-position: inside;
}
details.accordion[open] { padding-bottom: 12px; }

/* ---------- Charts ---------- */
.chart-wrap { position: relative; }
.chart-wrap svg { display: block; width: 100%; height: auto; }
.chart-legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--ink-2); margin-bottom: 6px; }
.chart-legend .key { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend .swatch { width: 12px; height: 3px; border-radius: 2px; display: inline-block; }
.chart-tooltip {
  position: fixed; z-index: 60; pointer-events: none;
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,0.16);
  padding: 8px 11px; font-size: 12.5px; display: none;
}
.chart-tooltip .tt-title { font-weight: 700; margin-bottom: 3px; }
.chart-tooltip .tt-row { display: flex; align-items: center; gap: 6px; }
.chart-tooltip .tt-row .swatch { width: 8px; height: 8px; border-radius: 2px; }
.chart-tooltip .tt-row .v { margin-left: auto; font-variant-numeric: tabular-nums; font-weight: 600; padding-left: 12px; }

.empty-state {
  text-align: center; color: var(--ink-2); padding: 44px 20px;
}
.empty-state .big { font-size: 17px; font-weight: 600; color: var(--ink-1); margin-bottom: 6px; }

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { padding: 6px 0 6px 26px; position: relative; font-size: 13.5px; }
.checklist li::before { content: "✓"; position: absolute; left: 4px; color: var(--status-good); font-weight: 700; }

/* ---------- Marketing plan steps ---------- */
.step-row {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 11px 0; border-bottom: 1px solid var(--grid);
}
.step-row:last-child { border-bottom: none; }
.step-row input[type=checkbox] { margin-top: 4px; width: 16px; height: 16px; accent-color: var(--accent); flex-shrink: 0; cursor: pointer; }
.step-row .step-title { font-weight: 600; }
.step-row.done .step-title { text-decoration: line-through; color: var(--ink-3); }
.step-row .step-how { font-size: 13px; color: var(--ink-2); margin-top: 2px; }
.step-row .step-why { font-size: 12.5px; color: var(--ink-3); margin-top: 3px; }
.step-row .step-why::before { content: "📖 "; }
.plan-progress {
  height: 8px; border-radius: 999px; background: var(--grid); overflow: hidden; margin: 6px 0 2px;
}
.plan-progress > div { height: 100%; background: var(--accent); border-radius: 999px; transition: width .3s; }
.score-hero {
  display: flex; align-items: center; gap: 18px; margin: 10px 0 4px;
}
.score-hero .num { font-size: 46px; font-weight: 700; line-height: 1; }
.score-hero .of { font-size: 14px; color: var(--ink-3); font-weight: 400; }

/* ---------- Login gate (portal) ---------- */
.login-gate {
  position: fixed; inset: 0; z-index: 90;
  background: var(--plane);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.login-gate .gate-card {
  background: var(--surface-1); border: 1px solid var(--border);
  border-radius: 14px; box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  padding: 30px 32px; width: 100%; max-width: 400px;
}
.login-gate .gate-brand {
  font-weight: 700; font-size: 19px; margin-bottom: 4px;
  display: flex; align-items: center; gap: 9px;
}
.login-gate .gate-brand .dot { width: 12px; height: 12px; border-radius: 4px; background: var(--accent); }
.login-gate .gate-sub { color: var(--ink-2); font-size: 13px; margin-bottom: 14px; }
.login-gate .gate-err { color: var(--status-critical); font-size: 12.5px; min-height: 18px; margin-top: 10px; font-weight: 600; }
.login-gate details { margin-top: 14px; }
.login-gate summary { font-size: 12.5px; color: var(--ink-2); cursor: pointer; }

.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--ink-1); color: var(--plane); font-size: 13px; font-weight: 600;
  padding: 9px 18px; border-radius: 999px; z-index: 99;
  opacity: 0; transition: opacity .2s; pointer-events: none;
}
.toast.show { opacity: 1; }

.help-note { font-size: 12.5px; color: var(--ink-3); margin-top: 6px; }
.section-gap { height: 8px; }
code.inline { font-family: ui-monospace, Consolas, monospace; font-size: 12.5px; background: var(--plane); border: 1px solid var(--grid); border-radius: 5px; padding: 1px 5px; }