/* ═══════════════════════════════════════════════════════
   Motion in the Universe — Clay Design System Extensions
   Only page-specific overrides. Everything else comes from
   clay-system.css + content.css.
   ═══════════════════════════════════════════════════════ */

/* ── Content Sidebar ── */
.content-sidebar {
  position: fixed;
  top: 64px;
  left: 0;
  bottom: 0;
  width: 260px;
  z-index: 200;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-right: 1px solid rgba(160,150,180,0.12);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.3s var(--ease-smooth);
}
.content-sidebar.open {
  transform: translateX(0);
}
.content-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(160,150,180,0.1);
}
.content-sidebar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.sidebar-close {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: all var(--dur-fast);
}
.sidebar-close:hover {
  background: rgba(124,58,237,0.08);
  color: var(--accent);
}
.content-sidebar-links {
  padding: 12px 0;
}
.content-sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  text-decoration: none;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--dur-fast) var(--ease-smooth);
  border-left: 3px solid transparent;
}
.content-sidebar-link:hover {
  background: rgba(124,58,237,0.04);
  color: var(--text-primary);
}
.content-sidebar-link.active {
  background: rgba(124,58,237,0.08);
  color: var(--accent);
  border-left-color: var(--accent);
}
.sidebar-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  background: rgba(124,58,237,0.08);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.content-sidebar-link.active .sidebar-num {
  background: var(--accent);
  color: #fff;
}

/* ── Sidebar Toggle Button ── */
.sidebar-toggle {
  position: fixed;
  top: 74px;
  left: 16px;
  z-index: 150;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(160,150,180,0.15);
  border-radius: 12px;
  padding: 8px 14px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-smooth);
  box-shadow: var(--shadow-card);
}
.sidebar-toggle:hover {
  background: rgba(255,255,255,1);
  transform: translateY(-1px);
  box-shadow: var(--shadow-btn-hover);
}
.sidebar-toggle i {
  font-size: 14px;
}

/* ── Content Main (replaces .container) ── */
.content-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  margin-left: 0;
  transition: margin-left 0.3s var(--ease-smooth);
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 48px 20px 32px;
}
.hero-badge {
  display: inline-block;
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.15);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  font-family: var(--font-heading);
}
.hero h1 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Section Header ── */
.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.section-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  background: rgba(124,58,237,0.06);
}
.section-icon.blue { background: rgba(14,165,233,0.1); }
.section-icon.purple { background: rgba(124,58,237,0.1); }
.section-icon.orange { background: rgba(245,158,11,0.1); }
.section-icon.green { background: rgba(16,185,129,0.1); }
.section-icon.pink { background: rgba(219,39,119,0.1); }

/* ── KLO Box (like .outcomes from content.css but astronomy-flavor) ── */
.klo-box {
  background: rgba(124,58,237,0.04);
  border-left: 4px solid var(--accent);
  border-radius: 16px;
  padding: 16px 20px;
  margin-bottom: 20px;
}
.klo-box h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.klo-box ul { list-style: none; padding: 0; }
.klo-box li {
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}
.klo-box li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.klo-box strong { color: var(--text-primary); }

/* ── Content text ── */
.content p { color: var(--text-muted); margin-bottom: 12px; }
.content ul { padding-left: 20px; margin-bottom: 12px; }
.content li { color: var(--text-muted); margin-bottom: 6px; }
.content strong { color: var(--text-primary); }

/* ── Formula Box ── */
.formula-box {
  background: linear-gradient(135deg, rgba(124,58,237,0.05), rgba(219,39,119,0.04));
  border-radius: 20px;
  padding: 20px 24px;
  margin: 20px 0;
  text-align: center;
}
.formula-box .formula-main {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}
.formula-box .formula-expanded {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-muted);
}

/* ── Example Box ── */
.example-box {
  background: rgba(245,158,11,0.04);
  border-left: 4px solid var(--accent-amber);
  border-radius: 16px;
  padding: 16px 20px;
  margin: 16px 0;
}
.example-box .example-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-amber);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.example-box p { color: var(--text-muted); margin-bottom: 6px; font-size: 14px; }
.example-box code {
  font-family: var(--font-heading);
  background: rgba(160,150,180,0.1);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--accent);
}

/* ── Sim Container ── */
.sim-container {
  background: linear-gradient(135deg, rgba(16,185,129,0.04), rgba(14,165,233,0.03));
  border: 1px solid rgba(160,150,180,0.1);
  border-radius: 24px;
  padding: 24px;
  margin: 20px 0;
  transition: all var(--dur-med) var(--ease-smooth);
}
.sim-container:hover { border-color: rgba(124,58,237,0.25); }
.sim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.sim-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}
.sim-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.sim-canvas-wrap {
  position: relative;
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  background: #f8f7fc;
}
.sim-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
  cursor: default;
}

/* ── Slider Groups ── */
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.slider-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
  font-family: var(--font-heading);
}
.slider-label span { color: var(--accent); font-weight: 700; }
input[type="range"] { accent-color: var(--accent); width: 120px; }

/* ── Inputs ── */
select, input[type="number"] {
  padding: 10px 14px;
  border: 2px solid rgba(160,150,180,0.15);
  border-radius: 16px;
  font-size: 14px;
  background: #EFEBF5;
  color: var(--text-primary);
  font-family: var(--font-body);
  transition: all var(--dur-fast);
}
select:focus, input[type="number"]:focus {
  outline: none;
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(124,58,237,0.12);
}

.input-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}
.input-pair { display: flex; gap: 8px; }
.input-pair input { flex: 1; min-width: 0; }
.input-pair select { width: 100px; }

/* ── Result Box ── */
.result-box {
  background: rgba(16,185,129,0.06);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: 20px;
  padding: 16px 20px;
  margin-top: 16px;
  text-align: center;
  font-weight: 700;
  color: var(--accent-emerald);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s var(--ease-smooth);
  max-height: 0;
  overflow: hidden;
}
.result-box.show {
  opacity: 1;
  transform: translateY(0);
  max-height: 500px;
  padding: 16px 20px;
}

/* ── Quiz ── */
.quiz-q {
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(160,150,180,0.1);
  border-radius: 20px;
  padding: 20px;
  margin-bottom: 16px;
  transition: all var(--dur-med) var(--ease-smooth);
}
.quiz-q:hover { background: rgba(255,255,255,0.7); }
.quiz-q.correct { border-color: var(--accent-emerald); }
.quiz-q.incorrect { border-color: var(--accent-rose); }
.quiz-q p.q-text {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-family: var(--font-heading);
}
.quiz-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 14px;
  margin-bottom: 4px;
  cursor: pointer;
  transition: all var(--dur-fast);
}
.quiz-opt:hover { background: rgba(124,58,237,0.05); }
.quiz-opt input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  margin: 0;
}
.quiz-opt label {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  flex: 1;
}
.quiz-feedback {
  margin-top: 8px;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  display: none;
}
.quiz-feedback.show { display: block; }
.quiz-feedback.right {
  background: rgba(16,185,129,0.1);
  color: var(--accent-emerald);
}
.quiz-feedback.wrong {
  background: rgba(244,63,94,0.1);
  color: var(--accent-rose);
}
.score-display {
  text-align: center;
  padding: 20px;
  border-radius: 20px;
  margin-top: 20px;
  font-family: var(--font-heading);
  font-weight: 700;
  display: none;
}
.score-display.show { display: block; }
.score-display.great {
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.2);
  color: var(--accent-emerald);
}
.score-display.good {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.2);
  color: var(--accent-amber);
}
.score-display.needs-work {
  background: rgba(244,63,94,0.1);
  border: 1px solid rgba(244,63,94,0.2);
  color: var(--accent-rose);
}

/* ── Planet Tooltip ── */
.planet-info {
  position: absolute;
  pointer-events: none;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(160,150,180,0.15);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-heading);
  box-shadow: var(--shadow-card);
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 10;
  white-space: nowrap;
}
.planet-info.show { opacity: 1; }

/* ── Stats Row ── */
.stat-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0;
}
.stat-badge {
  background: rgba(124,58,237,0.06);
  border: 1px solid rgba(124,58,237,0.12);
  border-radius: 14px;
  padding: 8px 14px;
  font-size: 13px;
  font-family: var(--font-heading);
}
.stat-badge .stat-val { color: var(--accent); font-weight: 700; }
.stat-badge .stat-lbl { color: var(--text-muted); margin-left: 4px; }

/* ── Data Table ── */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 16px;
  overflow: hidden;
  margin: 24px 0;
  font-size: 14px;
}
.data-table th {
  background: rgba(124,58,237,0.06);
  color: var(--accent);
  font-weight: 700;
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-heading);
}
.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(160,150,180,0.08);
  color: var(--text-muted);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(124,58,237,0.03); }

/* ── Section Anchor ── */
.section-anchor { scroll-margin-top: 130px; }

/* ── Card scroll reveal ── */
.card.section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-smooth), transform 0.6s var(--ease-smooth), box-shadow var(--dur-med) var(--ease-smooth);
}
.card.section.visible { opacity: 1; transform: translateY(0); }

/* ── Button overrides for clay compat ── */
.sim-controls .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  cursor: pointer;
  transition: all var(--dur-fast);
  text-decoration: none;
  line-height: 1;
  min-height: 44px;
}
.sim-controls .btn-primary,
.sim-controls .btn {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #fff;
  box-shadow: var(--shadow-btn);
}
.sim-controls .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}
.sim-controls .btn:active {
  transform: scale(0.95);
  box-shadow: var(--shadow-pressed);
}
.sim-controls .btn-outline {
  border: 2px solid var(--accent);
  background: transparent;
  color: var(--accent);
}
.sim-controls .btn-outline:hover {
  background: rgba(124,58,237,0.06);
  transform: translateY(-2px);
}
.sim-controls .btn-sm { font-size: 13px; padding: 6px 16px; min-height: 36px; }

/* ── Desktop sidebar visible ── */
@media (min-width: 1024px) {
  .content-sidebar {
    transform: translateX(0);
  }
  .sidebar-toggle {
    display: none;
  }
  .content-main {
    margin-left: 280px;
  }
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .hero { padding: 32px 16px 24px; }
  .card.section { padding: 20px; }
  .sim-container { padding: 16px; }
  .sim-controls { width: 100%; justify-content: center; }
  .input-row { grid-template-columns: 1fr; }
}