/* =====================================================
   MATFMA Design System — Primitives
   Buttons, pills, cards, stats band, callouts, footer chrome.
   Source: extracted from uploads/matfma-style.css (canon).

   Load AFTER colors_and_type.css — these rules depend on its tokens.
   ===================================================== */

/* ---------------------------------------------------------------
   BUTTONS · uppercase Poppins, .08em tracking, 12px, 6px radius
   --------------------------------------------------------------- */

.btn,
.btn-amber,
.btn-blue,
.btn-dark,
.btn-outline {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--r-sm);
  padding: 10px 22px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  line-height: 1.2;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn-amber {
  background: var(--matfma-amber);
  color: var(--ink-900);
}
.btn-amber:hover { background: var(--matfma-amber-deep); }

.btn-blue {
  background: var(--matfma-blue);
  color: #fff;
}
.btn-blue:hover { background: var(--matfma-blue-deep); color: #fff; }

.btn-dark {
  background: var(--ink-900);
  color: #fff;
  padding: 14px 32px; /* slightly chunkier — used on yellow CTA bands */
}
.btn-dark:hover { background: #1f2937; color: #fff; }

.btn-outline {
  background: transparent;
  color: var(--matfma-blue);
  border: 2px solid var(--matfma-blue);
  padding: 8px 20px; /* compensate for 2px border */
}
.btn-outline:hover {
  background: var(--matfma-blue);
  color: #fff;
}

.btn-lg {
  font-size: 13px;
  padding: 15px 36px;
  letter-spacing: 0.10em;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ---------------------------------------------------------------
   EYEBROW PILLS · tinted background, tracked uppercase label
   --------------------------------------------------------------- */

.pill-amber,
.pill-blue,
.pill-eyebrow {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--r-xs);
  line-height: 1.45;
}

.pill-amber {
  color: #8a6500;
  background: rgba(251, 190, 20, 0.16);
}

.pill-blue {
  color: #0d5a9e;
  background: rgba(56, 159, 247, 0.10);
}

/* Eyebrow text on dark surfaces — no pill, just colour */
.eyebrow-on-dark {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--matfma-blue);
  display: inline-block;
}

/* ---------------------------------------------------------------
   AMBER-LINE HEADLINE ACCENT · 3px bar under emphasised word
   Usage:  <h1>How MATs <span class="amber-line">actually work</span>.</h1>
   --------------------------------------------------------------- */

.amber-line {
  display: inline-block;
  position: relative;
}
.amber-line::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--matfma-amber);
  border-radius: 2px;
}

/* ---------------------------------------------------------------
   QUOTE · italic body with amber left bar
   --------------------------------------------------------------- */

.q {
  font-style: italic;
  border-left: 3px solid var(--matfma-amber);
  padding-left: 18px;
  line-height: 1.7;
  color: var(--ink-700);
}
[data-surface="dark"] .q,
.on-dark .q {
  color: rgba(255, 255, 255, 0.88);
}
.q cite {
  font-style: normal;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #8a6500;
  text-transform: uppercase;
  display: block;
  margin-top: 8px;
  font-family: var(--font-ui);
}
[data-surface="dark"] .q cite,
.on-dark .q cite {
  color: var(--matfma-amber);
}

/* ---------------------------------------------------------------
   CARD · the workhorse rectangle. Optional 3px coloured top stripe.
   --------------------------------------------------------------- */

.ds-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ds-card.strand-amber { border-top: 3px solid var(--matfma-amber); }
.ds-card.strand-blue  { border-top: 3px solid var(--matfma-blue); }
.ds-card.strand-dark  { border-top: 3px solid var(--ink-900); }

.ds-card h3 {
  font: 700 var(--fs-h3)/1.3 var(--font-display);
  margin: 0;
  color: var(--ink-900);
}
.ds-card p {
  font: 400 14px/1.7 var(--font-body);
  margin: 0;
  color: var(--ink-700);
}

/* Hover state for clickable cards (apply class .card-link) */
.ds-card.card-link {
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.ds-card.card-link:hover {
  border-color: var(--matfma-blue);
  box-shadow: var(--shadow-2);
}

/* ---------------------------------------------------------------
   STATS BAND · navy strip with amber numbers, 3-up grid
   --------------------------------------------------------------- */

.stats-band {
  background: var(--ink-900);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.stat {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}
.stat:last-child { border-right: none; }
.stat-num {
  font: 800 1.9rem/1 var(--font-display);
  color: var(--matfma-amber);
  display: block;
}
.stat-label {
  font: 600 11px/1 var(--font-ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin-top: 8px;
  display: block;
}

/* ---------------------------------------------------------------
   SECTION HEADER · numbered eyebrow + headline + hairline
   Usage:
     <header class="num-section">
       <div class="num">01</div>
       <h2>The point of MATFMA</h2>
     </header>
   --------------------------------------------------------------- */

.num-section {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: baseline;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 24px;
}
.num-section .num {
  font: 700 13px/1 var(--font-ui);
  letter-spacing: 0.18em;
  color: var(--matfma-blue);
}
.num-section h2 {
  margin: 0;
  font-size: 1.6rem;
}

/* ---------------------------------------------------------------
   FOOTER CHROME · navy bg with amber top stripe
   --------------------------------------------------------------- */

.ds-footer {
  background: var(--ink-900);
  border-top: 3px solid var(--matfma-amber);
  color: rgba(255, 255, 255, 0.7);
  padding: 40px 32px 28px;
}
.ds-footer a { color: rgba(255, 255, 255, 0.48); }
.ds-footer a:hover { color: var(--matfma-amber); text-decoration: none; }
.ds-footer .footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  padding-top: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.22);
  letter-spacing: 0.04em;
  margin-top: 24px;
}

/* ---------------------------------------------------------------
   YELLOW CTA BAND · full-bleed amber strip with dark button
   --------------------------------------------------------------- */

.cta-band {
  background: var(--matfma-amber);
  padding: 56px 32px;
  text-align: center;
  border-radius: var(--r-lg);
}
.cta-band h2 {
  margin: 0 0 12px;
  color: var(--ink-900);
  font-size: 1.75rem;
}
.cta-band p {
  margin: 0 auto 28px;
  color: rgba(17, 24, 39, 0.65);
  max-width: 480px;
  line-height: 1.7;
}

/* ---------------------------------------------------------------
   TWO-TONE WORDMARK · MAT-FMA fallback when image logo can't be used
   --------------------------------------------------------------- */

.wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  display: inline-flex;
  gap: 1px;
  line-height: 1;
}
.wordmark .mat { color: var(--matfma-blue); }
.wordmark .fma { color: var(--matfma-amber); }

/* ---------------------------------------------------------------
   FORM INPUTS · label + field + helper + error
   --------------------------------------------------------------- */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-body);
}
.field > label,
.field > .field-label {
  font: 600 13px/1.4 var(--font-ui);
  letter-spacing: 0.02em;
  color: var(--ink-900);
}
.field .field-required {
  color: var(--matfma-amber-deep);
  margin-left: 4px;
}
.field .field-help {
  font: 400 12px/1.5 var(--font-body);
  color: var(--ink-500);
}
.field .field-error {
  font: 500 12px/1.5 var(--font-body);
  color: var(--error);
}

.input,
.field input[type="text"],
.field input[type="email"],
.field input[type="password"],
.field input[type="search"],
.field input[type="tel"],
.field input[type="url"],
.field input[type="number"],
.field textarea,
.field select {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink-900);
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 11px 14px;
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
  width: 100%;
  box-sizing: border-box;
}
.field textarea { min-height: 120px; resize: vertical; }
.field select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-500) 50%),
                    linear-gradient(135deg, var(--ink-500) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 36px;
}

.input:focus,
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--matfma-blue);
  box-shadow: var(--shadow-focus);
}

.input.is-error,
.field.is-error input,
.field.is-error textarea,
.field.is-error select {
  border-color: var(--error);
}
.field.is-error .field-label::after { content: ""; }

.input::placeholder,
.field textarea::placeholder,
.field input::placeholder { color: var(--ink-400); }

/* Checkbox / radio rows */
.choice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font: 400 14px/1.5 var(--font-body);
  color: var(--ink-700);
  padding: 6px 0;
}
.choice input[type="checkbox"],
.choice input[type="radio"] {
  margin-top: 3px;
  accent-color: var(--matfma-blue);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---------------------------------------------------------------
   NAVIGATION · sticky top-nav + mobile menu
   --------------------------------------------------------------- */

.topnav {
  background: #fff;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 clamp(20px, 5vw, 56px);
  display: flex;
  align-items: center;
  height: 84px;
  gap: 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topnav .nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
  flex-shrink: 0;
}
.topnav .nav-brand img { height: 64px; width: auto; object-fit: contain; }
.topnav .nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.topnav .nav-links a {
  font: 500 13px/1 var(--font-body);
  color: var(--ink-700);
  text-decoration: none;
  padding: 8px 4px;
  transition: color var(--dur-base) var(--ease-out);
}
.topnav .nav-links a:hover { color: var(--matfma-blue); }
.topnav .nav-links a.active {
  color: var(--matfma-amber-deep);
  font-weight: 700;
}
.topnav .nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.topnav .nav-cta { margin-left: 0; }

.nav-burger {
  display: none;
  background: transparent;
  border: 0;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-burger span,
.nav-burger span::before,
.nav-burger span::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink-900);
  position: relative;
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out);
}
.nav-burger span::before { position: absolute; top: -7px; }
.nav-burger span::after  { position: absolute; top:  7px; }
.nav-burger[aria-expanded="true"] span { background: transparent; }
.nav-burger[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span::after  { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 800px) {
  .topnav { height: auto; min-height: 72px; padding-top: 12px; padding-bottom: 12px; flex-wrap: wrap; }
  .topnav .nav-brand img { height: 36px; }
  .topnav .nav-links {
    order: 3;
    width: 100%;
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
    padding-top: 8px;
    border-top: 1px solid var(--border-subtle);
    display: none;
  }
  .topnav.is-open .nav-links { display: flex; }
  .topnav .nav-links a {
    padding: 12px 6px;
    border-radius: var(--r-sm);
  }
  .topnav .nav-actions {
    order: 2;
    margin-left: 0;
    width: 100%;
    flex-wrap: wrap;
    gap: 10px;
  }
  .nav-burger { display: inline-flex; order: 1; margin-left: auto; }
}

/* ---------------------------------------------------------------
   EMPTY STATES · "nothing here yet" panels
   --------------------------------------------------------------- */

.empty {
  background: var(--bg-surface);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.empty .empty-glyph {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-tint-blue);
  color: var(--matfma-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 22px/1 var(--font-display);
  margin-bottom: 8px;
}
.empty h3 {
  margin: 0;
  font: 700 18px/1.3 var(--font-display);
  color: var(--ink-900);
}
.empty p {
  margin: 0;
  font: 400 14px/1.6 var(--font-body);
  color: var(--ink-500);
  max-width: 360px;
}
.empty .empty-action { margin-top: 12px; }

/* ---------------------------------------------------------------
   AVATARS · circle, gradient or photo fallback
   --------------------------------------------------------------- */

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--grad-duo);
  color: #fff;
  font: 700 14px/1 var(--font-display);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0.02em;
  overflow: hidden;
  position: relative;
  user-select: none;
}
.avatar img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 50%;
  position: absolute; inset: 0;
}
.avatar.sm { width: 28px; height: 28px; font-size: 11px; }
.avatar.lg { width: 56px; height: 56px; font-size: 18px; }
.avatar.xl { width: 80px; height: 80px; font-size: 24px; }

/* Author byline pattern */
.byline {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-body);
}
.byline .byline-name {
  font: 600 14px/1.2 var(--font-body);
  color: var(--ink-900);
}
.byline .byline-meta {
  font: 400 12px/1.4 var(--font-body);
  color: var(--ink-500);
  margin-top: 2px;
}

/* ---------------------------------------------------------------
   TABLES · admin lists. Functional, not flashy.
   --------------------------------------------------------------- */

.table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 14px;
  background: #fff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.table thead th {
  text-align: left;
  font: 600 11px/1.2 var(--font-ui);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  background: var(--ink-50);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  color: var(--ink-700);
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: rgba(56,159,247,0.04); }
.table .muted { color: var(--ink-500); font-size: 13px; }
.table .mono  { font-family: var(--font-mono); font-size: 12px; }

/* Status pill for table cells */
.tpill {
  display: inline-flex;
  align-items: center;
  font: 600 11px/1 var(--font-ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--r-full);
  background: var(--ink-50);
  color: var(--ink-700);
  border: 1px solid var(--border-subtle);
}
.tpill.ok      { background: rgba(34,197,94,0.10);   color: #166534;   border-color: rgba(34,197,94,0.30); }
.tpill.warn    { background: rgba(245,158,11,0.12);  color: #92400e;   border-color: rgba(245,158,11,0.30); }
.tpill.error   { background: rgba(239,68,68,0.10);   color: #991b1b;   border-color: rgba(239,68,68,0.30); }
.tpill.info    { background: rgba(56,159,247,0.10);  color: #0d5a9e;   border-color: rgba(56,159,247,0.30); }
.tpill.neutral { background: var(--ink-50);          color: var(--ink-500); }