/* ─── Coverlook — brand CSS ──────────────────────────────────── */
/* Stance: dense/utilitarian. Space unit: 4px. Radius: 2px. */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:opsz,wght@9..40,400;9..40,500&family=Fraunces:opsz,wght@9..144,400;9..144,600&family=Inter+Tight:wght@400;600&display=swap');

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

/* ─── Brand tokens as CSS custom properties ─────────────────── */
:root {
  /* Palette */
  --color-page-bg:        #faf7f2;
  --color-surface:        #f5f0e8;
  --color-text-primary:   #2b241c;
  --color-text-muted:     #7a6b5a;
  --color-text-inverse:   #f5f0e8;
  --color-primary:        #b86b1e;
  --color-primary-hover:  #9a5613;
  --color-primary-muted:  #e8d5b0;
  --color-border:         #e0d6c8;
  --color-border-focus:   #b86b1e;
  --color-negative:       #c94a3a;
  --color-positive:       #4a7c59;

  /* Typography */
  --font-display: 'Fraunces', serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'Inter Tight', monospace;

  /* Geometry */
  --radius: 2px;
  --space:  4px;

  /* Content column width */
  --content-w: 640px;

  /* Shadow — only for modals/dropdowns */
  --shadow-modal: 0 4px 16px rgba(43, 36, 28, 0.08);

  /* Light theme (default) */
  color-scheme: light;
}

/* ─── Dark theme ────────────────────────────────────────────── */
[data-theme="dark"] {
  --color-page-bg:        #1e1a16;
  --color-surface:        #2b241c;
  --color-text-primary:   #e8ddd0;
  --color-text-muted:     #9a8b78;
  --color-text-inverse:   #1e1a16;
  --color-primary:        #d4852a;
  --color-primary-hover:  #e8973d;
  --color-primary-muted:  #4a3a24;
  --color-border:         #3a3228;
  --color-border-focus:   #d4852a;
  --color-negative:       #e05a48;
  --color-positive:       #5d9a6e;
  --shadow-modal: 0 4px 16px rgba(0, 0, 0, 0.3);
  color-scheme: dark;
}

/* ─── Base ──────────────────────────────────────────────────── */
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--color-text-primary);
  background: var(--color-page-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 150ms ease, color 150ms ease;
}

a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--color-primary-hover); }
img { max-width: 100%; display: block; }

/* ─── Container ─────────────────────────────────────────────── */
.container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 calc(var(--space) * 4);
  width: 100%;
}

/* ─── Header ────────────────────────────────────────────────── */
.header-bar {
  padding: calc(var(--space) * 3) 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-page-bg);
}

.header-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--space) * 3);
}

.header-left {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 2);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 2);
  text-decoration: none;
  color: var(--color-text-primary);
}

.logo-link:hover { color: var(--color-text-primary); }

.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  font-variation-settings: 'opsz' 144;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 3);
}

.header-nav a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--color-text-primary);
}

/* ─── Light/dark toggle ─────────────────────────────────────── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  color: var(--color-text-muted);
  transition: background 150ms ease, color 150ms ease;
}

.theme-toggle:hover {
  background: var(--color-primary-muted);
  color: var(--color-primary);
}

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--space) * 2) calc(var(--space) * 5);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  line-height: 1.3;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease;
  white-space: nowrap;
}

.btn:hover { background: var(--color-primary-muted); color: var(--color-text-primary); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn-small {
  padding: calc(var(--space) * 1) calc(var(--space) * 3);
  font-size: 0.8rem;
}

.btn-danger {
  color: var(--color-negative);
  border-color: var(--color-negative);
  background: transparent;
}

.btn-danger:hover {
  background: var(--color-negative);
  color: var(--color-text-inverse);
  border-color: var(--color-negative);
}

.btn-large {
  padding: calc(var(--space) * 4) calc(var(--space) * 8);
  font-size: 1rem;
}

.btn-icon {
  padding: calc(var(--space) * 1.5);
  min-width: 32px;
}

/* ─── Eyebrow ───────────────────────────────────────────────── */
.section-eyebrow {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: calc(var(--space) * 2);
}

/* ─── Section heading ───────────────────────────────────────── */
.section-heading {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: calc(var(--space) * 3);
  font-variation-settings: 'opsz' 144;
}

.section-sub {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: calc(var(--space) * 4);
}

/* ─── Page sections ─────────────────────────────────────────── */
.page-section {
  padding: calc(var(--space) * 12) 0;
  border-top: 1px solid var(--color-border);
}

.page-section:first-of-type {
  border-top: none;
}

/* ─── Hero ──────────────────────────────────────────────────── */
.hero {
  padding: calc(var(--space) * 14) 0 calc(var(--space) * 10);
  text-align: center;
  border-top: none;
}

.hero-heading {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 2.25rem;
  line-height: 1.15;
  color: var(--color-text-primary);
  max-width: 540px;
  margin: 0 auto calc(var(--space) * 3);
  font-variation-settings: 'opsz' 144;
}

.hero-heading .highlight {
  color: var(--color-primary);
}

.hero-sub {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto calc(var(--space) * 6);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--space) * 3);
  flex-wrap: wrap;
}

.hero-actions .btn-primary {
  min-width: 160px;
}

/* ─── Figure / diagram ──────────────────────────────────────── */
.figure-container {
  margin: calc(var(--space) * 8) auto calc(var(--space) * 2);
  max-width: 560px;
}

.figure-container svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ─── Steps ─────────────────────────────────────────────────── */
.steps {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space) * 6);
}

.step {
  padding-left: calc(var(--space) * 12);
  position: relative;
}

.step-num {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  line-height: 1.6;
}

.step-title {
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-text-primary);
  margin-bottom: calc(var(--space) * 1);
}

.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── What it won't do / limitations ────────────────────────── */
.limits-list {
  list-style: none;
}

.limits-list li {
  padding: calc(var(--space) * 2) 0 calc(var(--space) * 2) calc(var(--space) * 6);
  position: relative;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border);
}

.limits-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: calc(var(--space) * 2.75);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-text-muted);
}

.limits-list li:last-child { border-bottom: none; }

.limits-list li strong {
  color: var(--color-text-primary);
}

/* ─── Audience section ──────────────────────────────────────── */
.audience-tag {
  display: inline-block;
  padding: calc(var(--space) * 1) calc(var(--space) * 2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-primary);
  border: 1px solid var(--color-primary-muted);
  border-radius: var(--radius);
  margin: 0 calc(var(--space) * 1) calc(var(--space) * 2) 0;
  background: var(--color-primary-muted);
}

/* ─── Result example ────────────────────────────────────────── */
.result-example {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 4);
  font-size: 0.85rem;
  margin: calc(var(--space) * 4) 0;
  overflow-x: auto;
}

.result-example table {
  width: 100%;
  border-collapse: collapse;
}

.result-example th {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: left;
  padding: calc(var(--space) * 1) calc(var(--space) * 2);
  border-bottom: 1px solid var(--color-border);
}

.result-example td {
  padding: calc(var(--space) * 2) calc(var(--space) * 2);
  border-bottom: 1px solid var(--color-border);
}

.result-example tr:last-child td { border-bottom: none; }

.result-example .status-available {
  color: var(--color-positive);
}

.result-example .status-unavailable {
  color: var(--color-negative);
}

/* ─── FAQ ───────────────────────────────────────────────────── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space) * 4);
}

.faq-q {
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: calc(var(--space) * 1);
}

.faq-a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── Footer ───────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 6) 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: calc(var(--space) * 3);
}

.footer-copyright {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-nav {
  display: flex;
  gap: calc(var(--space) * 4);
}

.footer-nav a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-nav a:hover { color: var(--color-text-primary); }

.footer-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ─── Landing page layout ───────────────────────────────────── */
.landing-main {
  flex: 1;
}

/* ─── Hidden utility ────────────────────────────────────────── */
.hidden { display: none !important; }

/* ─── App styles ────────────────────────────────────────────── */
.app-main {
  flex: 1;
  padding-top: calc(var(--space) * 6);
  padding-bottom: calc(var(--space) * 10);
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-controls {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 3);
}

.user-email {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ─── App h2 section demarcation ───────────────────────────── */
.app-section {
  margin-top: calc(var(--space) * 10);
  padding-top: calc(var(--space) * 6);
  border-top: 1px solid var(--color-border);
}

.app-section:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.app-section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: calc(var(--space) * 3);
  font-variation-settings: 'opsz' 144;
}

/* ─── Inline forms ──────────────────────────────────────────── */
.inline-form {
  display: flex;
  align-items: center;
  gap: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 4);
  flex-wrap: wrap;
}

.inline-form input[type="text"],
.inline-form input[type="time"],
.inline-form select {
  padding: calc(var(--space) * 2) calc(var(--space) * 3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.875rem;
  background: var(--color-page-bg);
  color: var(--color-text-primary);
}

.inline-form input[type="text"] { flex: 1; min-width: 160px; }
.inline-form label { font-size: 0.8rem; color: var(--color-text-muted); }

.coverage-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 3) calc(var(--space) * 4);
}

/* ─── Status messages ───────────────────────────────────────── */
.status-msg {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  padding: calc(var(--space) * 2) 0;
}

/* ─── Person card ───────────────────────────────────────────── */
.person-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 3) calc(var(--space) * 4);
  margin-bottom: calc(var(--space) * 2);
}

.person-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: calc(var(--space) * 2);
}

.person-name {
  font-weight: 500;
  font-size: 0.95rem;
}

.slots-list {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1);
  margin-bottom: calc(var(--space) * 2);
}

.slot-tag {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space) * 1);
  background: var(--color-page-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 0.5) calc(var(--space) * 2);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.slot-tag .remove-slot {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: 0 2px;
  line-height: 1;
}

.slot-tag .remove-slot:hover { color: var(--color-negative); }

.add-slot-form {
  display: flex;
  gap: calc(var(--space) * 1.5);
  align-items: center;
  flex-wrap: wrap;
}

.add-slot-form select,
.add-slot-form input[type="time"] {
  padding: calc(var(--space) * 1) calc(var(--space) * 2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.8rem;
  background: var(--color-page-bg);
  font-family: var(--font-body);
}

/* ─── Coverage results ──────────────────────────────────────── */
#coverage-results {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 4);
  margin-top: calc(var(--space) * 3);
}

.coverage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: calc(var(--space) * 3);
  gap: calc(var(--space) * 2);
  flex-wrap: wrap;
}

.coverage-count {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.9rem;
}

#coverage-results .coverage-list {
  list-style: none;
}

#coverage-results .coverage-list li {
  padding: calc(var(--space) * 2) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

#coverage-results .coverage-list li:last-child { border-bottom: none; }

#coverage-results .no-results {
  color: var(--color-text-muted);
}

/* ─── Notification ──────────────────────────────────────────── */
.notification {
  position: fixed;
  top: calc(var(--space) * 4);
  right: calc(var(--space) * 4);
  background: var(--color-negative);
  color: var(--color-text-inverse);
  padding: calc(var(--space) * 3) calc(var(--space) * 5);
  border-radius: var(--radius);
  font-size: 0.85rem;
  z-index: 1000;
  box-shadow: var(--shadow-modal);
  /* No entrance animation — per brand motion rules */
}

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 680px) {
  .container {
    padding: 0 calc(var(--space) * 3);
  }

  .hero-heading {
    font-size: 1.6rem;
  }

  .hero {
    padding: calc(var(--space) * 8) 0 calc(var(--space) * 6);
  }

  .page-section {
    padding: calc(var(--space) * 8) 0;
  }

  .section-heading {
    font-size: 1.25rem;
  }

  .step {
    padding-left: calc(var(--space) * 8);
  }

  .app-controls {
    gap: calc(var(--space) * 1.5);
  }

  .user-email {
    display: none;
  }

  .inline-form {
    flex-direction: column;
    align-items: stretch;
  }

  .inline-form input[type="text"] { min-width: unset; }

  .coverage-form {
    flex-direction: column;
  }

  .coverage-form label { width: 100%; }

  .add-slot-form {
    flex-direction: column;
    align-items: stretch;
  }

  .person-header {
    flex-direction: column;
    align-items: flex-start;
    gap: calc(var(--space) * 1);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .result-example {
    font-size: 0.75rem;
  }
}