/* ==========================================================================
   Crossword Clues — Main Stylesheet
   Mobile-first, accessible, no layout shift, Lighthouse 90+ target
   ========================================================================== */

/* ---------------------------------------------------------------------------
   0. Google Fonts import
   --------------------------------------------------------------------------- */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Space+Mono:wght@400;700&display=swap");

/* ---------------------------------------------------------------------------
   1. Design tokens / CSS custom properties
   --------------------------------------------------------------------------- */
:root {
  /* Brand palette */
  --color-bg: #0a0e1a;
  --color-bg-card: #111827;
  --color-bg-card-hover: #1a2235;
  --color-surface: #1e2d45;
  --color-surface-2: #253454;
  --color-border: #2d3f5e;
  --color-border-light: #3a4f72;

  /* Accent — electric indigo */
  --color-accent: #6366f1;
  --color-accent-glow: rgba(99, 102, 241, 0.25);
  --color-accent-hover: #818cf8;
  --color-accent-dark: #4f46e5;
  --gradient-accent: linear-gradient(135deg, #7c6cf0, #d946ef);

  /* Text */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  /* Confidence colours */
  --color-high: #22c55e;
  --color-high-bg: rgba(34, 197, 94, 0.12);
  --color-medium: #f59e0b;
  --color-medium-bg: rgba(245, 158, 11, 0.12);
  --color-low: #ef4444;
  --color-low-bg: rgba(239, 68, 68, 0.12);

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "Space Mono", "Courier New", monospace;

  /* Spacing scale */
  --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;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 24px rgba(99, 102, 241, 0.2);
  --shadow-tile: 0 2px 8px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-med: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --container-max: 860px;
  --container-wide: 1100px;
  --header-height: 64px;

  /* Ad slot heights (reserved to prevent layout shift) */
  --ad-slot-top-height: 90px;
  --ad-slot-bottom-height: 90px;
}

/* ---------------------------------------------------------------------------
   2. Reset & base
   --------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent-hover);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-accent);
}
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p + p {
  margin-top: var(--space-4);
}

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

/* ---------------------------------------------------------------------------
   3. Layout utilities
   --------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container--wide {
  max-width: var(--container-wide);
}

main {
  flex: 1;
  padding-top: var(--space-12);
  padding-bottom: var(--space-16);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------------------------------------------------------------------------
   4. Header & Navigation
   --------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(10, 14, 26, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-wide);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-accent-hover);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.nav-link.active {
  color: var(--color-accent-hover);
  background: var(--color-accent-glow);
}

.site-logo svg {
  width: 20px;
  height: 20px;
  color: white;
}

/* ---------------------------------------------------------------------------
   5. Footer
   --------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.site-footer .container {
  max-width: var(--container-wide);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--color-text-secondary);
}

/* ---------------------------------------------------------------------------
   6. Hero / Page header
   --------------------------------------------------------------------------- */
.page-hero {
  text-align: center;
  padding-bottom: var(--space-8);
  position: relative;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle, rgba(124, 108, 240, 0.2) 0%, rgba(217, 70, 239, 0.05) 35%, transparent 70%);
  transform: translate(-50%, -50%);
  z-index: -2;
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(var(--color-border-light) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.15;
  z-index: -1;
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--color-text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
}

.hero-eyebrow svg {
  width: 14px;
  height: 14px;
  color: #d946ef;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.hero-title .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-inline: auto;
}

/* ---------------------------------------------------------------------------
   7. Solver form card
   --------------------------------------------------------------------------- */
.solver-card {
  background: rgba(17, 24, 39, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.3);
  margin-bottom: var(--space-8);
  transition: border-color var(--transition-med);
}

.solver-card:focus-within {
  border-color: var(--color-accent);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}

.form-label .label-hint {
  font-weight: 400;
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}

.form-input,
.form-textarea {
  width: 100%;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: var(--space-3) var(--space-4);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-textarea {
  resize: vertical;
  min-height: 96px;
  line-height: 1.5;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.5;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-input[aria-invalid="true"],
.form-textarea[aria-invalid="true"] {
  border-color: var(--color-low);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.field-error {
  display: block;
  margin-top: var(--space-2);
  font-size: 0.8rem;
  color: var(--color-low);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Solve button */
.btn-solve {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
  position: relative;
  overflow: hidden;
}

.btn-solve::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 30%, rgba(255, 255, 255, 0.1));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-solve:hover:not(:disabled)::before {
  opacity: 1;
}

.btn-solve:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

.btn-solve:active:not(:disabled) {
  transform: translateY(0);
}

.btn-solve:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Inline Button Spinner */
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
  display: none;
}

.btn-solve[aria-busy="true"] .btn-spinner {
  display: block;
}
.btn-solve[aria-busy="true"] svg:not(.btn-spinner) {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------------------------------------------------------------------------
   8. Results section
   --------------------------------------------------------------------------- */
.results-section {
  animation: fadeInUp 0.3s ease both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.results-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.results-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Ad slot — top of results */
.ad-slot-top {
  min-height: var(--ad-slot-top-height);
  background: transparent;
  border: none;
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
}

/* Ad slot — below results */
.ad-slot-bottom {
  min-height: var(--ad-slot-bottom-height);
  background: transparent;
  border: none;
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
}

/* ---------------------------------------------------------------------------
   9. Answer cards
   --------------------------------------------------------------------------- */
.results-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  /* Reserve min height to avoid layout shift */
  min-height: 180px;
}

.answer-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  transition: border-color var(--transition-med), transform var(--transition-med), box-shadow var(--transition-med);
  animation: cardIn 0.3s ease both;
}

.answer-card:nth-child(2) { animation-delay: 0.06s; }
.answer-card:nth-child(3) { animation-delay: 0.12s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.answer-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 16px var(--color-accent-glow);
}

.answer-rank {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.answer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.answer-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.btn-copy {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.btn-copy:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.1);
}

.btn-copy[aria-label="Copied!"]::after {
  content: "Copied!";
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-surface-2);
  color: #fff;
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 4px;
  pointer-events: none;
}

/* Letter tiles */
.letter-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.letter-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 46px;
  background: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, transparent 100%), var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-top-color: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-text-primary);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: background var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.answer-card[data-confidence="high"] .letter-tile {
  background: var(--gradient-accent);
  border: none;
  box-shadow: 0 4px 10px var(--color-accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.answer-card:hover .letter-tile {
  background: var(--color-accent-glow);
  border-color: var(--color-accent);
}

/* Confidence badge */
.confidence-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.confidence-badge::before {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.confidence-high { color: #fff; }
.confidence-high::before {
  background: var(--color-high);
  box-shadow: 0 0 6px var(--color-high);
}

.confidence-medium { color: #fff; }
.confidence-medium::before {
  background: var(--color-medium);
  box-shadow: 0 0 6px var(--color-medium);
}

.confidence-low { color: #fff; }
.confidence-low::before {
  background: var(--color-low);
  box-shadow: 0 0 6px var(--color-low);
}

.answer-explanation {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

/* Empty / error states */
.no-results {
  text-align: center;
  padding: var(--space-10) var(--space-5);
  color: var(--color-text-secondary);
}

.no-results-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--space-4);
}

.no-results-hint {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: var(--space-2);
}

.error-message {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  color: #fca5a5;
}

.error-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ---------------------------------------------------------------------------
   10. SEO content sections
   --------------------------------------------------------------------------- */
.seo-section {
  margin-top: var(--space-16);
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-border);
}

.seo-section h2 {
  font-size: 1.4rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.seo-section h3 {
  font-size: 1.05rem;
  color: var(--color-accent-hover);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.seo-section p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* FAQ accordion */
.faq-list {
  margin-top: var(--space-6);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-surface);
}

.faq-chevron {
  flex-shrink: 0;
  transition: transform var(--transition-med);
  color: var(--color-text-muted);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-med);
}

.faq-item[open] .faq-answer {
  grid-template-rows: 1fr;
}

.faq-content {
  overflow: hidden;
}

.faq-content-inner {
  padding: 0 var(--space-5) var(--space-4);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.how-to-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.how-to-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.how-to-card svg {
  color: var(--color-accent-hover);
}

.how-to-card h4 {
  font-size: 1rem;
  color: var(--color-text-primary);
}

.how-to-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0;
}

@media (max-width: 768px) {
  .how-to-grid { grid-template-columns: 1fr; }
}

.footer-top-line {
  height: 1px;
  background: var(--gradient-accent);
  width: 100%;
  opacity: 0.5;
}

/* ---------------------------------------------------------------------------
   11. Blog / Content pages
   --------------------------------------------------------------------------- */
.page-content {
  max-width: 720px;
  margin-inline: auto;
}

.page-title {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, #f1f5f9 30%, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-meta {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.prose {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
}

.prose h2 {
  font-size: 1.3rem;
  color: var(--color-text-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.prose h3 {
  font-size: 1.05rem;
  color: var(--color-accent-hover);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.prose p {
  margin-bottom: var(--space-4);
}

.prose ul,
.prose ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.prose li {
  margin-bottom: var(--space-2);
}

.prose strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-surface);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-accent-hover);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-6);
  font-size: 0.9rem;
}

.prose th {
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-weight: 600;
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.prose td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.prose tr:last-child td {
  border-bottom: none;
}

/* Blog card grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.blog-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--transition-med), transform var(--transition-med);
  text-decoration: none;
}

.blog-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.blog-card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent-hover);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.blog-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  flex: 1;
}

.blog-card-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------------
   12. About / Contact / Privacy pages
   --------------------------------------------------------------------------- */
.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-top: var(--space-8);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-1px);
  color: #fff;
}

/* ---------------------------------------------------------------------------
   13. How it works steps
   --------------------------------------------------------------------------- */
.steps-grid {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.step-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
}

.step-number {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-accent), #8b5cf6);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: #fff;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.step-content p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ---------------------------------------------------------------------------
   14. Pattern hint chips
   --------------------------------------------------------------------------- */
.pattern-hint {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.pattern-chip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-2);
  color: var(--color-accent-hover);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}

.pattern-chip:hover {
  background: var(--color-accent-glow);
  border-color: var(--color-accent);
}

/* ---------------------------------------------------------------------------
   15. Utility classes
   --------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-muted   { color: var(--color-text-muted); }
.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }

/* ---------------------------------------------------------------------------
   16. Responsive adjustments
   --------------------------------------------------------------------------- */
@media (max-width: 600px) {
  .solver-card {
    padding: var(--space-5);
  }

  .letter-tiles {
    gap: 2px;
  }
  
  .letter-tile {
    width: clamp(18px, calc((100vw - 64px) / 15 - 2px), 32px);
    height: 38px;
    font-size: 1rem;
  }

  .site-nav .nav-link:not(.active) {
    display: none;
  }
}

@media (max-width: 400px) {
  /* Tap targets for mobile */
  .form-input, .form-textarea, .btn-solve, .faq-question {
    min-height: 44px;
  }
  .pattern-chip {
    padding: 8px 12px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

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

/* ---------------------------------------------------------------------------
   17. Dark scrollbar
   --------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}