/* BidVision Beta Landing Page — Design Tokens from BidVision app */

:root {
  --cognac-light: #A07850;
  --cognac: #8B5E3C;
  --cognac-dark: #6F4A2F;

  --warm-light: #F9F6F2;
  --warm-mid: #EDE8DE;
  --warm-dark: #D6D1CB;

  --gray-light: #B0ACA6;
  --gray-mid: #5A5855;

  --navy-light: #4A5D78;
  --navy: #344560;
  --navy-dark: #2C3A50;

  --cool-light: #253248;
  --cool-mid: #111620;
  --cool-dark: #080B12;

  --red: #B32D2A;
  --sage: #5B7A5B;

  --surface-app: #F4F2EF;
  --surface-card: #FFFFFF;
  --text-primary: #2A2A28;
  --text-secondary: #5A5855;
  --text-muted: #7A766F;
  --text-on-primary: #FFFFFF;
  --action-primary: var(--cognac);
  --action-hover: var(--cognac-dark);
  --border-subtle: var(--warm-dark);
  --border-strong: #C2BBB3;
  --focus-ring: 0 0 0 2px rgba(139, 94, 60, 0.2);
  --shadow-overlay: 0 10px 24px rgba(0, 0, 0, 0.15);

  --radius-touch: 8px;
  --radius-float: 12px;
  --radius-pill: 9999px;

  --font-sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-app: var(--cool-dark);
    --surface-card: var(--cool-light);
    --text-primary: var(--warm-light);
    --text-secondary: var(--warm-dark);
    --text-muted: var(--gray-light);
    --border-subtle: var(--cool-light);
    --border-strong: var(--navy);
    --focus-ring: 0 0 0 2px rgba(139, 94, 60, 0.3);
    --shadow-overlay: 0 10px 24px rgba(0, 0, 0, 0.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

body {
  font-family: var(--font-sans);
  background: var(--surface-app);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-font-smoothing: antialiased;
}

/* === Layout === */
.container {
  width: 100%;
  max-width: 640px;
  padding: 48px 24px;
}

/* === Hero === */
.hero {
  text-align: center;
  margin-bottom: 40px;
}

.hero-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-float);
  margin-bottom: 16px;
}

.brand {
  font-size: 2rem;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.brand-bid {
  font-weight: 700;
  color: var(--action-primary);
}

.brand-vision {
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--action-primary);
}

.tagline {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(91, 122, 91, 0.1);
  color: var(--sage);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.privacy-badge svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* === Cards === */
.card {
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-float);
  padding: 32px;
  margin-bottom: 24px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* === Forms === */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-input,
.form-select {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  background: var(--surface-app);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-touch);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--action-primary);
  box-shadow: var(--focus-ring);
}

.form-input::placeholder {
  color: var(--text-muted);
}

/* Radio group */
.radio-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.radio-option {
  position: relative;
}

.radio-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-option label {
  display: block;
  padding: 8px 16px;
  font-size: 0.875rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-touch);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  color: var(--text-secondary);
}

.radio-option input:checked + label {
  border-color: var(--action-primary);
  background: rgba(139, 94, 60, 0.08);
  color: var(--action-primary);
  font-weight: 500;
}

.radio-option input:focus-visible + label {
  box-shadow: var(--focus-ring);
}

.radio-option label:hover {
  border-color: var(--action-primary);
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checkbox-group input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--action-primary);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.checkbox-group label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
}

/* Optional label hint */
.optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8125rem;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  border-radius: var(--radius-touch);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
  width: 100%;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--action-primary);
  color: var(--text-on-primary);
}

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

.btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* === Download Buttons === */
.downloads {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--surface-app);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-touch);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
}

.download-btn:hover {
  border-color: var(--action-primary);
  background: rgba(139, 94, 60, 0.04);
}

.download-btn.recommended {
  border-color: var(--action-primary);
  background: rgba(139, 94, 60, 0.06);
}

.download-btn .platform-icon {
  font-size: 1.5rem;
  width: 32px;
  text-align: center;
  flex-shrink: 0;
}

.download-btn .platform-info {
  flex: 1;
}

.download-btn .platform-name {
  display: block;
  font-weight: 600;
}

.download-btn .platform-detail {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.download-btn .badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--action-primary);
  background: rgba(139, 94, 60, 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

/* === Install Instructions === */
.collapsible {
  margin-top: 24px;
}

.collapsible-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--action-primary);
  cursor: pointer;
  padding: 4px 0;
}

.collapsible-toggle:hover {
  text-decoration: underline;
}

.collapsible-toggle .arrow {
  transition: transform var(--duration-fast) var(--ease-out);
  font-size: 0.75rem;
}

.collapsible-toggle.open .arrow {
  transform: rotate(90deg);
}

.collapsible-content {
  display: none;
  margin-top: 12px;
  padding: 16px;
  background: var(--surface-app);
  border-radius: var(--radius-touch);
  font-size: 0.875rem;
  line-height: 1.6;
}

.collapsible-content.open {
  display: block;
}

.collapsible-content h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  margin-top: 16px;
}

.collapsible-content h4:first-child {
  margin-top: 0;
}

.collapsible-content ol {
  padding-left: 20px;
  margin-bottom: 12px;
}

.collapsible-content li {
  margin-bottom: 4px;
}

/* === Messages === */
.message {
  text-align: center;
  padding: 24px;
}

.message-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.message-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.message-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Error === */
.error-text {
  color: var(--red);
  font-size: 0.8125rem;
  margin-top: 8px;
  display: none;
}

.error-text.visible {
  display: block;
}

/* === Inline Code Entry === */
.code-entry-inline {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

/* === Toggle Link === */
.toggle-link {
  display: block;
  text-align: center;
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--action-primary);
  background: none;
  border: none;
  font-family: var(--font-sans);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.toggle-link:hover {
  color: var(--action-hover);
}

/* === Feedback section === */
.feedback-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.feedback-link {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-touch);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.feedback-link:hover {
  border-color: var(--action-primary);
  color: var(--text-primary);
}

/* === Version info === */
.version-info {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 16px 0;
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 32px 24px;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 640px;
}

/* === Why Section === */
.why-section {
  margin-bottom: 24px;
}

.why-lead {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.why-item {
  padding: 16px;
  background: var(--surface-app);
  border-radius: var(--radius-touch);
}

.why-icon {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.why-heading {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.why-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.why-bottom {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

/* === State visibility === */
.state { display: none; }
.state.active { display: block; }

/* === Mobile === */
.mobile-notice {
  display: none;
  text-align: center;
  padding: 12px 16px;
  background: rgba(201, 138, 0, 0.08);
  border: 1px solid rgba(201, 138, 0, 0.2);
  border-radius: var(--radius-touch);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .container { padding: 32px 20px; }
  .radio-group { flex-direction: column; }
  .feedback-links { flex-direction: column; }
  .mobile-notice.show { display: block; }
}

@media (min-width: 900px) {
  .container {
    max-width: 960px;
  }

  .why-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .state .card,
  .state .toggle-link {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
  }
}