/* Daily Question — design system
 * All values from docs/daily-question-design-spec-v3.md.
 * Lock to light scheme regardless of OS preference (per spec rule 1).
 */
:root {
  color-scheme: light;

  /* Color: brand */
  --c-primary: #1D4ED8;
  --c-primary-border: #1E40AF;
  --c-blue-tint-light: #EFF6FF;
  --c-blue-tint-medium: #DBEAFE;
  --c-teal: #0FA37F;

  /* Color: surfaces */
  --c-page: #F4F4F5;
  --c-card: #FFFFFF;
  --c-border: #E4E4E7;
  --c-border-subtle: #F0F0F0;

  /* Color: text */
  --c-text: #0F172A;
  --c-text-secondary: #374151;
  --c-text-muted: #64748B;
  --c-text-placeholder: #94A3B8;

  /* Color: states */
  --c-success: #059669;
  --c-success-bg: #D1FAE5;
  --c-success-border: #BBF7D0;

  --c-warning: #D97706;
  --c-warning-bg: #FEF9EE;
  --c-warning-bg-strong: #FEF3C7;
  --c-warning-border: #FDE68A;

  --c-error: #DC2626;
  --c-error-bg: #FEE2E2;
  --c-error-border: #FCA5A5;

  --c-purple: #6D28D9;
  --c-purple-bg: #F3E8FF;
  --c-purple-border: #C4B5FD;
  /* What text color goes on a SOLID purple background. White in
     light mode (purple is dark); near-black in dark mode (purple
     is light). Use everywhere we paint text directly on
     var(--c-purple), so contrast stays correct in both themes. */
  --c-on-purple: #fff;

  /* Color: dark (super-admin shell, Phase 12) */
  --c-dark: #0F172A;
  --c-dark-border: #1E293B;
  --c-dark-muted: #64748B;
  --c-dark-active: #93C5FD;

  /* Type scale */
  --f-stack: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-page-title: 500 20px/1.2 var(--f-stack);
  --f-section-title: 500 17px/1.25 var(--f-stack);
  --f-card-title: 500 15px/1.3 var(--f-stack);
  --f-body: 400 14px/1.65 var(--f-stack);
  --f-body-small: 400 13px/1.6 var(--f-stack);
  --f-caption: 400 12px/1.5 var(--f-stack);
  --f-label: 500 11px/1.2 var(--f-stack);
  --f-metric: 500 28px/1.1 var(--f-stack);

  /* Layout */
  --topbar-h: 52px;
  --sidebar-w: 200px;
  --radius: 12px;
  --radius-pill: 999px;
  --radius-button: 8px;

  /* Shadow (used very sparingly) */
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04);
}

/* Reset / base */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: var(--f-body);
  color: var(--c-text);
  background: var(--c-page);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Typography helpers */
.h-page { font: var(--f-page-title); letter-spacing: -0.3px; color: var(--c-text); margin: 0; }
.h-section { font: var(--f-section-title); letter-spacing: -0.2px; color: var(--c-text); margin: 0; }
.h-card { font: var(--f-card-title); color: var(--c-text); margin: 0; }
.text-muted { color: var(--c-text-muted); }
.text-secondary { color: var(--c-text-secondary); }
.label-eyebrow {
  font: var(--f-label);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--c-text-placeholder);
}

/* Card surface */
.card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 22px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font: 500 13px/1 var(--f-stack);
  border-radius: var(--radius-button);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: filter 0.15s;
}
.btn:hover { text-decoration: none; filter: brightness(1.04); }
.btn-primary   { background: var(--c-primary); border-color: var(--c-primary-border); color: #fff; }
.btn-secondary { background: #CBD5E1; border-color: #475569; border-width: 2px; color: var(--c-text); }
.btn-danger    { background: var(--c-error-bg); border-color: var(--c-error-border); color: #991B1B; }
.btn-ghost     { background: var(--c-card); border-color: #CBD5E1; color: var(--c-text-secondary); }
.btn-ai        { background: var(--c-purple); border-color: var(--c-purple); color: var(--c-on-purple); }
.btn-success   { background: var(--c-success); border-color: #047857; color: #fff; }
.btn-lg { padding: 12px 32px; font-size: 15px; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* Badges (status, tier) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 500;
}
.badge-active   { background: var(--c-success-bg); color: #065F46; }
.badge-active::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c-success); }
.badge-draft    { background: var(--c-page); color: var(--c-text-muted); }
.badge-paused   { background: var(--c-warning-bg-strong); color: #92400E; }
.badge-ended    { background: var(--c-page); color: var(--c-text-placeholder); }
.badge-tier-free     { background: var(--c-page); color: var(--c-text-muted); }
.badge-tier-starter  { background: var(--c-blue-tint-light); color: var(--c-primary-border); }
.badge-tier-pro      { background: var(--c-purple-bg); color: var(--c-purple); }
.badge-tier-business { background: var(--c-success-bg); color: #065F46; }

/* Banners */
.banner {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.55;
  border: 1px solid;
}
.banner-info    { background: var(--c-blue-tint-light); border-color: #BFDBFE; color: var(--c-primary-border); }
.banner-warning { background: var(--c-warning-bg); border-color: var(--c-warning-border); color: #92400E; }
.banner-neutral { background: #F8FAFC; border-color: var(--c-border); color: var(--c-text-secondary); }
.banner-danger  { background: var(--c-error-bg); border-color: var(--c-error-border); color: #991B1B; }

/* Form fields */
.label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: 5px;
}
.label-hint {
  margin-left: 6px;
  font-size: 11px;
  color: var(--c-text-placeholder);
}
.input, .select, .textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid #CBD5E1;
  border-radius: var(--radius-button);
  font-size: 13px;
  background: var(--c-card);
  color: var(--c-text);
  font-family: inherit;
  line-height: 1.3;
  box-sizing: border-box;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--c-primary);
}
.textarea { min-height: 72px; resize: vertical; }
/* Strip native select chrome so the control matches .input visually.
   Custom chevron via background-image keeps it framework-free. */
.select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 34px;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 12px 12px;
}

/* Sealed pill (today's question) */
.pill-sealed {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: #F8FAFC;
  border: 1px solid var(--c-border);
  font-size: 11px;
  color: var(--c-text-placeholder);
}

/* Container helpers */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Marketing-specific layout */
.mkt-topbar {
  background: var(--c-card);
  border-bottom: 1px solid var(--c-border);
  padding: 14px 0;
}
.mkt-topbar .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.mkt-nav {
  display: flex;
  gap: 22px;
  align-items: center;
}
.mkt-nav a:not(.btn) {
  color: var(--c-text-secondary);
  font-size: 14px;
}
.mkt-footer {
  background: var(--c-dark);
  color: #94A3B8;
  padding: 48px 0 32px;
  margin-top: 80px;
}
.mkt-footer .row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.mkt-footer a { color: #CBD5E1; font-size: 13px; }
.mkt-footer .copy { font-size: 12px; color: #64748B; margin-top: 24px; }

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.logo-mark { width: 28px; height: 28px; }
.logo-word {
  font: 500 18px/1 var(--f-stack);
  letter-spacing: -0.3px;
}
.logo-word .daily { color: var(--c-text); }
.logo-word .question { color: var(--c-primary); }
/* Dark backgrounds: flip "Daily" to white so the whole logo reads. */
.mkt-footer .logo-word .daily { color: #fff; }
.mkt-footer .logo-word .question { color: #60A5FA; }

/* ----------------------------------------------------------------------
   Mobile responsiveness
   App shell collapses to a single column below 768px; sidebar slides in
   when toggled. Marketing nav stacks below 640px. Tables get horizontal
   scroll inside their .card wrappers.
   ---------------------------------------------------------------------- */

/* Hamburger -- only visible at <=768. Hidden otherwise. */
.app-menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 6px;
  margin-right: 8px;
  color: var(--c-text);
  cursor: pointer;
}
.app-menu-toggle svg { display: block; width: 22px; height: 22px; }

@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
  }
  .app-topbar { padding: 0 14px; }
  .app-menu-toggle { display: inline-flex; }

  /* Sidebar slides in from the left; .open toggled by the hamburger. */
  .app-sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    bottom: 0;
    width: 240px;
    transform: translateX(-100%);
    transition: transform 180ms ease;
    z-index: 40;
    box-shadow: 4px 0 20px rgba(15,23,42,0.06);
    overflow-y: auto;
  }
  .app-sidebar.open { transform: translateX(0); }

  .app-main { padding: 16px; grid-column: 1; }

  /* Stat-card 4-up grids wrap to 2-up on phones. */
  .app-main .card[style*="repeat(4"] { /* tolerated -- inline styles */ }
}

/* Marketing hamburger toggle: hidden by default, shown at <=640px. */
.mkt-menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 6px;
  color: var(--c-text);
  cursor: pointer;
}
.mkt-menu-toggle svg { display: block; width: 24px; height: 24px; }

@media (max-width: 640px) {
  .mkt-menu-toggle { display: inline-flex; }
  .mkt-topbar .container.row { flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
  .mkt-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
    padding: 10px 0 6px;
    border-top: 1px solid var(--c-border);
    margin-top: 10px;
  }
  .mkt-nav.open { display: flex; }
  .mkt-nav a:not(.btn) { padding: 10px 4px; font-size: 14px; border-bottom: 1px solid var(--c-border-subtle); }
  .mkt-nav a.btn { align-self: flex-start; margin-top: 6px; }

  /* Marketing footer columns stack */
  .mkt-footer .row { grid-template-columns: 1fr !important; gap: 22px; }

  /* Default font sizes on hero */
  .hero h1, h1.h-page { font-size: 28px !important; }
  .h-section { font-size: 18px !important; }

  /* Tables that overflow get horizontal scroll inside their card */
  .card table { font-size: 12px; }
  .card { overflow-x: auto; }

  /* Section title shrinks so long marketing headings fit. */
  .section-title { font-size: 26px; }
  .section-sub { font-size: 15px; }
}

/* Phones (iPhone SE width and similar). Tighten container padding and
   pull section padding down so content actually fits. */
@media (max-width: 480px) {
  .container, .container-narrow { padding: 0 16px; }
  .hero h1, h1.h-page { font-size: 26px !important; }
  .section-title { font-size: 22px; }
  .card { padding: 16px; }
  .mkt-footer { padding: 36px 0 24px; margin-top: 48px; }
}

/* Horizontal-scroll wrapper for wide tables (admin, settings, etc).
   Lives inside a .card so only the table scrolls, not the page. */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-scroll > table { min-width: max-content; }

/* Global horizontal-overflow guard. Catches runaway inline widths and
   third-party embeds without us chasing each site. Real scrollers
   (.table-scroll, .card, .app-sidebar) set their own overflow so they
   remain unaffected. */
html, body { overflow-x: hidden; }

/* Touch targets: bump small buttons to 36px on coarse pointers. */
@media (pointer: coarse) {
  .btn-sm { min-height: 36px; }
  input[type="checkbox"], input[type="radio"] { width: 18px; height: 18px; }
}

/* ----------------------------------------------------------------------
   Accessibility (WCAG 2.1 AA target)
   ---------------------------------------------------------------------- */

/* Visible focus on every interactive element. The CSS reset killed the
   browser default; restore something better-looking. */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: 3px;
}

button:focus-visible,
a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
}

/* Skip-to-content link: visually hidden until keyboard-focused. Marketing
   + app layouts include it as the first focusable element so keyboard
   users can jump past the topbar/sidebar. */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 500;
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* Visually hidden, available to screen readers. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Honor user's reduced-motion preference -- collapse all of our
   transitions / animations. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ----------------------------------------------------------------------
   Dark mode
   Driven by [data-theme] on <html> (set by _LayoutApp from the user's
   ThemePreference). "system" follows OS via prefers-color-scheme.
   We override surface + text + border tokens; brand colors stay but
   tints get darker; states keep their hue but get darker backgrounds.
   ---------------------------------------------------------------------- */

@mixin dark-tokens {}  /* not used; pseudo-doc */

html[data-theme="dark"] {
  color-scheme: dark;

  --c-primary: #60A5FA;
  --c-primary-border: #2563EB;
  --c-blue-tint-light: rgba(96, 165, 250, 0.12);
  --c-blue-tint-medium: rgba(96, 165, 250, 0.20);

  --c-page: #0F172A;
  --c-card: #1E293B;
  --c-border: #334155;
  --c-border-subtle: #1E293B;

  --c-text: #F1F5F9;
  --c-text-secondary: #CBD5E1;
  --c-text-muted: #94A3B8;
  --c-text-placeholder: #64748B;

  --c-success-bg: rgba(5, 150, 105, 0.20);
  --c-warning-bg: rgba(217, 119, 6, 0.18);
  --c-warning-bg-strong: rgba(217, 119, 6, 0.28);
  --c-error-bg: rgba(220, 38, 38, 0.20);
  /* AI accent: lift the brand purple a notch for legibility on dark
     surfaces, lighten the tint so the boxes still pop, and brighten
     the border so it doesn't disappear into the card. */
  --c-purple: #C4B5FD;
  --c-purple-bg: rgba(167, 139, 250, 0.28);
  --c-purple-border: rgba(196, 181, 253, 0.55);
  --c-on-purple: #0F172A;
}

html[data-theme="system"] {
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  html[data-theme="system"] {
    --c-primary: #60A5FA;
    --c-primary-border: #2563EB;
    --c-blue-tint-light: rgba(96, 165, 250, 0.12);
    --c-blue-tint-medium: rgba(96, 165, 250, 0.20);
    --c-page: #0F172A;
    --c-card: #1E293B;
    --c-border: #334155;
    --c-border-subtle: #1E293B;
    --c-text: #F1F5F9;
    --c-text-secondary: #CBD5E1;
    --c-text-muted: #94A3B8;
    --c-text-placeholder: #64748B;
    --c-success-bg: rgba(5, 150, 105, 0.20);
    --c-warning-bg: rgba(217, 119, 6, 0.18);
    --c-warning-bg-strong: rgba(217, 119, 6, 0.28);
    --c-error-bg: rgba(220, 38, 38, 0.20);
    --c-purple: #C4B5FD;
    --c-purple-bg: rgba(167, 139, 250, 0.28);
    --c-purple-border: rgba(196, 181, 253, 0.55);
    --c-on-purple: #0F172A;
  }
}

/* ----------------------------------------------------------------------
   Form-control dark-mode hardening. The .input/.select/.textarea
   rule already pulls --c-card + --c-text, but raw <input>/<select>/
   <textarea> elements (no class) inherit browser defaults, which
   means a white field with light-grey text in dark mode -- unreadable.
   Selects also need explicit <option> styling so the open dropdown
   doesn't render white-on-white.
   ---------------------------------------------------------------------- */
.select option,
select option {
  background: var(--c-card);
  color: var(--c-text);
}

html[data-theme="dark"] input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="file"]),
html[data-theme="dark"] select,
html[data-theme="dark"] textarea {
  background: var(--c-card);
  color: var(--c-text);
  border-color: var(--c-border);
}
html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder {
  color: var(--c-text-placeholder);
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"] input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="file"]),
  html[data-theme="system"] select,
  html[data-theme="system"] textarea {
    background: var(--c-card);
    color: var(--c-text);
    border-color: var(--c-border);
  }
  html[data-theme="system"] input::placeholder,
  html[data-theme="system"] textarea::placeholder {
    color: var(--c-text-placeholder);
  }
}

/* ----------------------------------------------------------------------
   Marketing section heading pattern. Used on the homepage + applied
   incrementally to other marketing pages for consistency. Mockup uses
   eyebrow (small uppercase blue) -> 32px section title -> muted sub.
   ---------------------------------------------------------------------- */
.section-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: 10px;
  display: inline-block;
}
.section-title {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--c-text);
  margin-bottom: 14px;
  line-height: 1.2;
}
.section-sub {
  font-size: 16px;
  color: var(--c-text-secondary);
  line-height: 1.65;
  max-width: 520px;
  margin-bottom: 0;
}