/* SkillLane Merit — design tokens */

:root {
  /* Shared */
  --nav-navy: #0B1E3D;
  --nav-navy-deep: #091729;
  --accent-gold: #C8A96E;
  --accent-gold-soft: #D4B77F;
  --success: #3DAA72;
  --error: #E05252;

  /* Scale */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-2xl: 24px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Type */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  --font-num: 'Inter', ui-sans-serif, system-ui, sans-serif;
}

[data-theme='light'] {
  /* Light mode colors */
  --bg: #F0F3F7;
  --surface: #FFFFFF;
  --surface-muted: #F7F9FC;
  --text: #0B1E3D;
  --text-muted: #4A5568;
  --text-subtle: #6B7A91;
  --border: #D6DBE4;
  --border-soft: #E5E9F0;
  --input-bg: #FFFFFF;
  --surface-nav: #FFFFFF;
  --surface-elevated: #FFFFFF;
  --shadow-card: 0 2px 12px rgba(11, 30, 61, 0.08);
  --shadow-card-hover: 0 8px 28px rgba(11, 30, 61, 0.12);
  --shadow-inset: inset 0 0 0 1px rgba(11, 30, 61, 0.06);
}

[data-theme='dark'] {
  /* Deeper page bg — distances it from sidebar/cards so elevation reads clearly */
  --bg: #060E1C;
  /* Card surface — meaningfully lighter than bg so cards feel "lifted" */
  --surface: #13233F;
  --surface-muted: #0E1A30;
  /* Nav chrome sits between bg and surface — its own tone so sidebar/topnav don't blur into content */
  --surface-nav: #0B1A31;
  --surface-elevated: #1B2F4F;
  --text: #EEF1F6;
  --text-muted: #A5B8CE;
  --text-subtle: #788EA9;
  /* Brighter borders — navy-navy borders disappear; need more lightness */
  --border: #2B426B;
  --border-soft: #1C3055;
  --input-bg: #0F1E38;
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(255,255,255,0.02) inset;
  --shadow-card-hover: 0 10px 32px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255,255,255,0.03) inset;
  --shadow-inset: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Base */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-feature-settings: 'cv11', 'ss01', 'ss03';
  color: var(--text);
  background: var(--bg);
  transition: background-color 150ms ease-out, color 150ms ease-out;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; padding: 0; }
input, textarea, select { font-family: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* Numerics */
.num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum' 1, 'cv11';
  letter-spacing: -0.01em;
}

/* Type scale */
.t-display {
  font-size: clamp(56px, 7vw, 80px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
}
.t-h1 { font-size: 36px; font-weight: 600; line-height: 1.15; letter-spacing: -0.02em; }
.t-h2 { font-size: 28px; font-weight: 600; line-height: 1.2; letter-spacing: -0.015em; }
.t-h3 { font-size: 20px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }
.t-body { font-size: 15px; font-weight: 400; line-height: 1.6; }
.t-body-sm { font-size: 14px; font-weight: 400; line-height: 1.55; }
.t-label {
  font-size: 12px; font-weight: 500; line-height: 1.4;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.t-caption { font-size: 13px; font-weight: 500; line-height: 1.4; }

/* Smooth mode transition */
.theme-fade * {
  transition: background-color 150ms ease-out, border-color 150ms ease-out, color 150ms ease-out, box-shadow 150ms ease-out !important;
}

/* Scrollbar subtle */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* Utility */
.card {
  background: var(--surface);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-card);
}
.hairline { border-top: 1px solid var(--border); }
.muted { color: var(--text-muted); }
.subtle { color: var(--text-subtle); }

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  border-radius: 6px;
}

/* Striped placeholder for imagery */
.stripe-ph {
  background-image: repeating-linear-gradient(
    135deg,
    var(--border-soft) 0,
    var(--border-soft) 6px,
    var(--surface-muted) 6px,
    var(--surface-muted) 12px
  );
  color: var(--text-subtle);
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  transition: transform 200ms ease-out, box-shadow 200ms ease-out, background-color 200ms ease-out, border-color 200ms ease-out;
  white-space: nowrap;
}
.btn-primary {
  background: var(--nav-navy);
  color: #fff;
}
[data-theme='dark'] .btn-primary {
  background: var(--accent-gold);
  color: var(--nav-navy);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-hover); }
.btn-gold {
  background: var(--accent-gold);
  color: var(--nav-navy);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200, 169, 110, 0.35); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--text-muted); }

/* Inputs */
.input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text);
  transition: border-color 150ms ease-out, box-shadow 150ms ease-out;
}
.input:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(200, 169, 110, 0.18);
}
.input::placeholder { color: var(--text-subtle); }

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--text-muted);
  border: 1px solid var(--border-soft);
}
.chip-gold {
  background: color-mix(in oklch, var(--accent-gold) 18%, transparent);
  color: var(--accent-gold);
  border-color: color-mix(in oklch, var(--accent-gold) 30%, transparent);
}
.chip-green {
  background: color-mix(in oklch, var(--success) 14%, transparent);
  color: var(--success);
  border-color: color-mix(in oklch, var(--success) 30%, transparent);
}

/* Skeleton shimmer */
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--border-soft) 0%, var(--surface-muted) 50%, var(--border-soft) 100%);
  background-size: 800px 100%;
  animation: shimmer 1.6s linear infinite;
  border-radius: 6px;
}

/* Fade-in for screen changes */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeUp 300ms ease-out both; }

/* Toast animations + positioning */
@keyframes toastIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(-8px) scale(0.96); }
}
.toast { animation: toastIn 240ms cubic-bezier(0.2, 0.8, 0.2, 1) both; }
.toast-leaving { animation: toastOut 220ms ease-in forwards; }

/* Overlay animations */
@keyframes panelIn {
  from { opacity: 0; transform: translateY(-4px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes drawerIn {
  from { opacity: 0; transform: translateX(-14px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes sheetUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.toast-stack {
  right: 20px;
  top: 84px;
}
@media (max-width: 767px) {
  .toast-stack {
    left: 12px; right: 12px; top: 60px;
    align-items: stretch;
  }
  .toast-stack .toast { width: 100%; min-width: 0; max-width: none; }
}

/* Responsive utilities */
@media (max-width: 767px) {
  .t-h1 { font-size: 26px; }
  .t-h2 { font-size: 22px; }
  .hide-mobile { display: none !important; }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .hide-tablet { display: none !important; }
}
@media (min-width: 1024px) {
  .show-mobile { display: none !important; }
}
.only-mobile { display: none; }
@media (max-width: 767px) { .only-mobile { display: initial; } }

/* Reduce-motion respect */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}