/* ==========================================================================
   T2 AUTOMATIONS — CORE DESIGN SYSTEM (t2-core.css)
   Target: Hand-written static HTML/CSS/JS apps on Cloudflare Pages
   Stack: Zero build step, self-hosted Plus Jakarta Sans, Lucide SVG accents
   ========================================================================== */

/* --- 1. TYPOGRAPHY: PLUS JAKARTA SANS (SELF-HOSTED) --- */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./fonts/plus-jakarta-sans-latin-400.woff2') format('woff2'),
       url('../shared/ui/fonts/plus-jakarta-sans-latin-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('./fonts/plus-jakarta-sans-latin-600.woff2') format('woff2'),
       url('../shared/ui/fonts/plus-jakarta-sans-latin-600.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('./fonts/plus-jakarta-sans-latin-700.woff2') format('woff2'),
       url('../shared/ui/fonts/plus-jakarta-sans-latin-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --- 2. BASE TOKENS (LIGHT & DARK ACCESSIBLE PAIRS) --- */
:root {
  /* Canvas & Surface Layers */
  --t2-canvas: #f8fafc;
  --t2-canvas-subtle: #f1f5f9;
  --t2-card-bg: #ffffff;
  --t2-card-hover: #fcfdfe;
  --t2-card-border: rgba(15, 23, 42, 0.08);
  --t2-border-strong: rgba(15, 23, 42, 0.16);

  /* Typography & Ink */
  --t2-font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --t2-ink: #0f172a;
  --t2-ink-muted: #64748b;
  --t2-ink-subtle: #94a3b8;

  /* Primary Brand & Actions (Default British Teal/Navy) */
  --t2-primary: #0f766e;
  --t2-primary-hover: #115e59;
  --t2-primary-contrast: #ffffff;
  --t2-primary-subtle: #f0fdfa;
  --t2-focus: #0ea5e9;

  /* Semantic Status Tokens (WCAG AA Compliant) */
  --t2-success: #15803d;
  --t2-success-bg: #f0fdf4;
  --t2-success-border: #bbf7d0;
  --t2-warning: #b45309;
  --t2-warning-bg: #fffbeb;
  --t2-warning-border: #fde68a;
  --t2-danger: #b91c1c;
  --t2-danger-bg: #fef2f2;
  --t2-danger-border: #fecaca;

  /* Elevation Shadows & Radii */
  --t2-shadow-card: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --t2-shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.06);
  --t2-shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --t2-radius-sm: 8px;
  --t2-radius: 14px;
  --t2-radius-lg: 20px;
  --t2-touch-target: 48px;

  /* Pico CSS v2 Variable Bridges */
  --pico-font-family: var(--t2-font);
  --pico-background-color: var(--t2-canvas);
  --pico-card-background-color: var(--t2-card-bg);
  --pico-card-box-shadow: var(--t2-shadow-card);
  --pico-primary: var(--t2-primary);
  --pico-primary-hover: var(--t2-primary-hover);
  --pico-border-radius: var(--t2-radius);
}

@media (prefers-color-scheme: dark) {
  :root {
    --t2-canvas: #090d16;
    --t2-canvas-subtle: #0f172a;
    --t2-card-bg: #131c2e;
    --t2-card-hover: #172237;
    --t2-card-border: rgba(255, 255, 255, 0.09);
    --t2-border-strong: rgba(255, 255, 255, 0.18);
    --t2-ink: #f8fafc;
    --t2-ink-muted: #94a3b8;
    --t2-ink-subtle: #64748b;
    --t2-primary: #14b8a6;
    --t2-primary-hover: #2dd4bf;
    --t2-primary-contrast: #042f2e;
    --t2-primary-subtle: #042f2e40;
    --t2-shadow-card: 0 4px 16px -2px rgba(0, 0, 0, 0.45);
    --t2-shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.6);
  }
}

/* --- 3. GLOBAL FOUNDATION --- */
html {
  font-family: var(--t2-font);
  background-color: var(--t2-canvas);
  color: var(--t2-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--t2-font);
  background-color: var(--t2-canvas);
  color: var(--t2-ink);
  line-height: 1.5;
  margin: 0;
}

/* --- 4. LAYERED CARD SURFACES (Rule 2) --- */
.t2-card,
article.t2-card,
.t2-panel {
  background: var(--t2-card-bg);
  border: 1px solid var(--t2-card-border);
  border-radius: var(--t2-radius);
  box-shadow: var(--t2-shadow-card);
  padding: 1.25rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.t2-card--interactive:hover {
  transform: translateY(-1px);
  box-shadow: var(--t2-shadow-lg);
}

/* --- 5. FORM POLISH & 48px TOUCH TARGETS (Rule 3) --- */
.t2-input,
.t2-select,
.t2-btn,
input.t2-input,
select.t2-select,
button.t2-btn {
  font-family: var(--t2-font);
  font-size: 1rem;
  min-height: var(--t2-touch-target);
  border-radius: var(--t2-radius-sm);
  box-sizing: border-box;
}

.t2-input,
input[type="text"].t2-input,
input[type="email"].t2-input,
input[type="number"].t2-input,
input[type="date"].t2-input,
input[type="time"].t2-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--t2-card-bg);
  color: var(--t2-ink);
  border: 1px solid var(--t2-border-strong);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.t2-input:focus,
input.t2-input:focus,
select.t2-select:focus {
  border-color: var(--t2-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.25);
}

.t2-btn,
button.t2-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  background: var(--t2-primary);
  color: var(--t2-primary-contrast);
  border: 1px solid transparent;
  cursor: pointer;
  box-shadow: var(--t2-shadow-sm);
  transition: background-color 0.15s ease, transform 0.1s ease;
  user-select: none;
}

.t2-btn:hover {
  background: var(--t2-primary-hover);
}

.t2-btn:active {
  transform: scale(0.98);
}

.t2-btn--secondary {
  background: var(--t2-canvas-subtle);
  color: var(--t2-ink);
  border: 1px solid var(--t2-border-strong);
}

.t2-btn--secondary:hover {
  background: var(--t2-card-hover);
}

/* --- 6. INPUT GROUPS & CURRENCY/POSTCODE PREFIXES --- */
.t2-input-group {
  display: flex;
  position: relative;
  align-items: center;
}

.t2-input-prefix {
  position: absolute;
  left: 1rem;
  color: var(--t2-ink-muted);
  font-weight: 600;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
}

.t2-input-group .t2-input.has-prefix {
  padding-left: 2.25rem;
}

/* --- 7. LUCIDE SVG MICRO-ACCENTS & SPRITE SUPPORT --- */
.t2-icon {
  width: 1.25rem;
  height: 1.25rem;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

.t2-icon--sm { width: 1rem; height: 1rem; }
.t2-icon--lg { width: 1.5rem; height: 1.5rem; }

/* Status Badges */
.t2-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  line-height: 1;
}

.t2-badge--success { background: var(--t2-success-bg); color: var(--t2-success); border: 1px solid var(--t2-success-border); }
.t2-badge--warning { background: var(--t2-warning-bg); color: var(--t2-warning); border: 1px solid var(--t2-warning-border); }
.t2-badge--danger  { background: var(--t2-danger-bg);  color: var(--t2-danger);  border: 1px solid var(--t2-danger-border); }