/* ============================================
   Maths Mummy — design tokens & base styles
   ============================================ */

:root {
  /* Colours */
  --chalkboard: #2e3d36;       /* deep green-black, blackboard */
  --chalkboard-light: #3c5048;
  --chalk: #f7f4ec;            /* warm chalk white */
  --chalk-dim: #d9d4c4;
  --coral: #ff8a65;            /* marker accent */
  --coral-dark: #e8754f;
  --pencil-yellow: #ffd166;    /* highlight / pencil */
  --paper: #fbf8f1;            /* page background */
  --paper-line: #e4ddc9;
  --ink: #2e3d36;

  /* Type */
  --font-display: 'Caveat', cursive;
  --font-body: 'Atkinson Hyperlegible', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', monospace;

  /* Layout */
  --max-width: 1080px;
  --radius: 14px;
  --shadow-soft: 0 4px 18px rgba(46, 61, 54, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 17px;
}

img { max-width: 100%; display: block; }

a { color: var(--coral-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--pencil-yellow);
  outline-offset: 2px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Header / nav
   ============================================ */

.site-header {
  background: var(--chalkboard);
  color: var(--chalk);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 4px solid var(--pencil-yellow);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--chalk);
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  font-weight: 700;
  color: var(--pencil-yellow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-tag {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--chalk-dim);
}

nav.main-nav ul {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

nav.main-nav a {
  color: var(--chalk);
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s ease, color 0.15s ease;
}

nav.main-nav a:hover,
nav.main-nav a[aria-current="page"] {
  background: var(--chalk);
  color: var(--chalkboard);
  text-decoration: none;
}

/* ============================================
   Hero
   ============================================ */

.hero {
  background: var(--chalkboard);
  color: var(--chalk);
  position: relative;
  overflow: hidden;
  padding: 64px 0 88px;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.025) 0 1px, transparent 1px 80px);
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.75rem;
  color: var(--pencil-yellow);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  margin: 0 0 18px;
  font-weight: 700;
}

.hero h1 .underline {
  position: relative;
  color: var(--pencil-yellow);
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--chalk-dim);
  max-width: 38ch;
  margin: 0 0 28px;
}

.button-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, color 0.15s ease, border-color .15s ease;
}

.btn:hover { transform: translateY(-2px); text-decoration: none; }

.btn-primary {
  background: var(--coral);
  color: var(--chalkboard);
}
.btn-primary:hover { background: var(--coral-dark); color: var(--chalk); }

.btn-outline {
  background: transparent;
  border-color: var(--chalk-dim);
  color: var(--chalk);
}
.btn-outline:hover { border-color: var(--pencil-yellow); color: var(--pencil-yellow); }

/* Chalkboard quote-of-the-day signature element */
.quote-board {
  background: var(--chalkboard-light);
  border: 2px dashed rgba(247,244,236,0.25);
  border-radius: var(--radius);
  padding: 28px 26px;
  position: relative;
  box-shadow: var(--shadow-soft);
}

.quote-board::before {
  content: "Quote of the day";
  position: absolute;
  top: -13px;
  left: 22px;
  background: var(--pencil-yellow);
  color: var(--chalkboard);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
}

.quote-board blockquote {
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 1.35;
  margin: 14px 0 12px;
  color: var(--chalk);
}

.quote-board .quote-board-refresh {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--chalk-dim);
  background: none;
  border: 1px solid rgba(247,244,236,0.25);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.quote-board .quote-board-refresh:hover { border-color: var(--pencil-yellow); color: var(--pencil-yellow); }

/* ============================================
   Sections / cards
   ============================================ */

.section {
  padding: 72px 0;
}

.section + .section {
  border-top: 1px solid var(--paper-line);
}

.section-eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.75rem;
  color: var(--coral-dark);
  margin: 0 0 10px;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 16px;
}

.section p.section-intro {
  max-width: 60ch;
  color: #5b6760;
  margin: 0 0 36px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.card {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.card p { margin: 0; color: #5b6760; }

.card .card-icon {
  font-size: 1.8rem;
  display: inline-block;
  margin-bottom: 10px;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
  background: var(--chalkboard);
  color: var(--chalk-dim);
  padding: 40px 0;
  margin-top: 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
}

.site-footer a { color: var(--pencil-yellow); }

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--chalk);
}

/* ============================================
   Page header (non-home pages)
   ============================================ */

.page-header {
  background: var(--chalkboard);
  color: var(--chalk);
  padding: 48px 0 56px;
  border-bottom: 4px solid var(--pencil-yellow);
}

.page-header .section-eyebrow { color: var(--pencil-yellow); }

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 6px 0 12px;
}

.page-header p {
  color: var(--chalk-dim);
  max-width: 60ch;
  margin: 0;
}

/* ============================================
   Quotes page
   ============================================ */

.quote-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.quote-card {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-left: 6px solid var(--coral);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-soft);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.quote-card blockquote {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0;
  line-height: 1.4;
}

.quote-card .quote-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #8a958e;
  margin-top: 6px;
}

.quote-card .quote-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

/* ============================================
   Forms
   ============================================ */

.form-card {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-soft);
  max-width: 640px;
}

.form-card h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 6px;
}

.form-card .form-help {
  color: #5b6760;
  margin: 0 0 20px;
  font-size: 0.92rem;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 11px 14px;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
}

.field textarea { min-height: 120px; resize: vertical; }

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--coral);
  outline: none;
}

.form-status {
  margin-top: 14px;
  font-size: 0.92rem;
  font-weight: 700;
  min-height: 1.2em;
}
.form-status.success { color: #3f8f5b; }
.form-status.error { color: #d1493f; }

button.btn-submit {
  background: var(--coral);
  color: var(--chalkboard);
  border: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 28px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s ease;
}
button.btn-submit:hover { background: var(--coral-dark); color: var(--chalk); }
button.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }

/* ============================================
   Stories page
   ============================================ */

.story-list {
  display: grid;
  gap: 22px;
}

.story-card {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-soft);
}

.story-card h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  margin: 0 0 4px;
}

.story-card .story-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #8a958e;
  margin: 0 0 14px;
}

.story-card .story-body {
  color: #41504a;
}

.story-card .story-body p { margin: 0 0 14px; }
.story-card .story-body p:last-child { margin-bottom: 0; }

.story-card .story-actions {
  margin-top: 16px;
  display: flex;
  gap: 8px;
}

/* ============================================
   Maths Help page
   ============================================ */

.topic-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.topic-nav a {
  font-size: 0.85rem;
  font-weight: 700;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: 999px;
  padding: 8px 16px;
  color: var(--ink);
}
.topic-nav a:hover {
  border-color: var(--coral);
  text-decoration: none;
  color: var(--coral-dark);
}

.help-topic {
  margin-bottom: 56px;
  padding-top: 16px;
  scroll-margin-top: 84px;
}

.help-topic h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.help-topic .topic-tier {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  background: var(--pencil-yellow);
  color: var(--chalkboard);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
}

.help-topic > p.topic-summary {
  color: #5b6760;
  max-width: 65ch;
  margin: 6px 0 18px;
}

.help-block {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-soft);
}

.help-block h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 10px;
}

.help-block ul, .help-block ol { margin: 0 0 12px; padding-left: 22px; }
.help-block ul:last-child, .help-block ol:last-child, .help-block p:last-child { margin-bottom: 0; }

.help-block .worked-example {
  background: var(--paper);
  border-left: 4px solid var(--coral);
  padding: 14px 18px;
  border-radius: 8px;
  margin-top: 14px;
  font-size: 0.96rem;
}

.help-block .worked-example strong { color: var(--coral-dark); }

.help-block .tip {
  background: #fff8e6;
  border-left: 4px solid var(--pencil-yellow);
  padding: 12px 18px;
  border-radius: 8px;
  margin-top: 12px;
  font-size: 0.92rem;
}

code, .formula {
  font-family: var(--font-mono);
  background: var(--paper);
  border: 1px solid var(--paper-line);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.92em;
}

/* ============================================
   Admin page
   ============================================ */

.admin-section {
  margin-bottom: 48px;
}

.admin-section h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin: 0 0 16px;
}

.pending-item {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-left: 6px solid var(--pencil-yellow);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-soft);
}

.pending-item .pending-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.btn-approve {
  background: #3f8f5b;
  color: #fff;
  border: none;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
}
.btn-approve:hover { background: #347a4c; }

.btn-reject {
  background: #d1493f;
  color: #fff;
  border: none;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
}
.btn-reject:hover { background: #b53b32; }

.btn-delete {
  background: transparent;
  border: 1px solid #d1493f;
  color: #d1493f;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.8rem;
}
.btn-delete:hover { background: #d1493f; color: #fff; }

.empty-state {
  color: #8a958e;
  font-style: italic;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 800px) {
  .hero .container {
    grid-template-columns: 1fr;
  }
  .quote-card, .pending-item {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  nav.main-nav ul { gap: 2px; }
  nav.main-nav a { padding: 7px 10px; font-size: 0.88rem; }
  .section { padding: 48px 0; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}