@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=Playfair+Display:wght@600;700&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-page: #0f0c1a;
  --bg-block: #1a1530;
  --accent-gold: #c8a96e;
  --accent-muted: #9a8b6e;
  --text-primary: #e8e0f0;
  --text-secondary: #9985b0;
  --border-color: #2d2550;
  --radius: 12px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-page);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 80%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.2) 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 45%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 15%, rgba(255,255,255,0.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 60% 75%, rgba(255,255,255,0.25) 0%, transparent 100%),
    radial-gradient(1px 1px at 25% 35%, rgba(255,255,255,0.3) 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
  animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

h1, h2, h3, h4 {
  font-family: 'Playfair Display', serif;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.3rem; }

small, .text-small {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: #e0c992;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 1;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 12, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.logo-symbol {
  width: 1.6rem;
  height: 1.6rem;
  flex-shrink: 0;
  display: block;
}

.main-nav ul {
  display: none;
  list-style: none;
  gap: 1.5rem;
}

.main-nav a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover {
  color: var(--accent-gold);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent-gold);
  transition: var(--transition);
}

.main-nav.open ul {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(26, 21, 48, 0.98);
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

/* Cards & glass effect */
.card {
  background: rgba(26, 21, 48, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(200, 169, 110, 0.4);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: linear-gradient(135deg, #c8a96e, #a07840);
  color: #0f0c1a;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(200, 169, 110, 0.35);
  color: #0f0c1a;
}

.btn-block {
  width: 100%;
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(15, 12, 26, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-gold);
}

a:focus-visible,
.btn:focus-visible,
.menu-toggle:focus-visible,
.form-control:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.form-control:focus-visible {
  border-color: var(--accent-gold);
}

.form-control::placeholder {
  color: var(--text-secondary);
}

.form-control-error {
  border-color: #e57373;
}

.form-error {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: #e57373;
}

/* Hero */
.hero {
  padding: 3rem 0 2rem;
  text-align: center;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.hero-copy {
  width: 100%;
}

.hero h1 {
  margin-bottom: 1rem;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.hero-calculator {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

/* Sections */
.section {
  padding: 2.5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2rem;
}

.section-title h2 {
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-gold), rgba(200, 169, 110, 0.25));
  margin: 0.75rem auto 0;
}

/* Grid layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

/* Calculator cards on homepage */
.calc-card {
  text-align: center;
}

.calc-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin: 0 auto 0.75rem;
  color: var(--accent-gold);
}

.calc-card-icon img,
.calc-card-icon svg {
  width: 3rem;
  height: 3rem;
  display: block;
}

.calc-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.calc-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

/* Article cards */
.article-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.article-card .article-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Calculator result */
.result-block {
  display: none;
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: rgba(26, 21, 48, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  text-align: center;
}

.result-block.visible {
  display: block;
  animation: result-fade-in 0.4s ease forwards;
}

@keyframes result-fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-number {
  font-family: 'Playfair Display', serif;
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-shadow: 0 0 30px rgba(200, 169, 110, 0.5);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.result-number-animate {
  animation: result-glow 0.75s ease-out;
}

@keyframes result-glow {
  0% {
    text-shadow: 0 0 0 rgba(200, 169, 110, 0);
    transform: scale(0.9);
  }
  55% {
    text-shadow: 0 0 42px rgba(200, 169, 110, 0.75);
    transform: scale(1.05);
  }
  100% {
    text-shadow: 0 0 30px rgba(200, 169, 110, 0.5);
    transform: scale(1);
  }
}

.result-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--accent-gold);
}

.result-text {
  text-align: left;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.formula-block {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(15, 12, 26, 0.5);
  border-radius: var(--radius);
  text-align: left;
  font-size: 0.9rem;
}

.formula-block h4 {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-muted);
  margin-bottom: 0.75rem;
}

.formula-step {
  color: var(--text-secondary);
  padding: 0.25rem 0;
}

/* Letter table */
.letter-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

.letter-table th,
.letter-table td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  text-align: center;
}

.letter-table th {
  background: rgba(200, 169, 110, 0.12);
  color: var(--accent-gold);
  font-weight: 600;
}

.letter-table td {
  color: var(--text-secondary);
}

.letter-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1rem 0;
}

.letter-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: rgba(15, 12, 26, 0.5);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  min-width: 48px;
}

.letter-item .letter {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.letter-item .value {
  font-size: 0.85rem;
  color: var(--accent-gold);
}

/* Compatibility */
.compat-persons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.person-block {
  padding: 1.25rem;
  background: rgba(15, 12, 26, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.person-block h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--accent-muted);
}

.compat-numbers {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.compat-num-item {
  text-align: center;
}

.compat-num-item .num {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  color: var(--accent-gold);
}

.compat-num-item .label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.progress-bar-wrap {
  margin: 1.5rem 0;
}

.progress-bar {
  height: 12px;
  background: rgba(15, 12, 26, 0.6);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #a07840, #c8a96e);
  border-radius: 6px;
  transition: width 1s ease;
  width: 0;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.progress-percent {
  color: var(--accent-gold);
  font-weight: 600;
}

/* SEO content */
.seo-content {
  padding: 2rem 0;
}

.seo-content h2 {
  margin: 2rem 0 1rem;
}

.seo-content h3 {
  margin: 1.5rem 0 0.75rem;
  color: var(--accent-muted);
}

.seo-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.seo-content ul, .seo-content ol {
  color: var(--text-secondary);
  margin: 0 0 1rem 1.5rem;
}

.seo-content li {
  margin-bottom: 0.5rem;
}

/* Data table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.data-table th {
  background: rgba(200, 169, 110, 0.12);
  color: var(--accent-gold);
}

.data-table td {
  color: var(--text-secondary);
}

.data-table td:first-child {
  font-weight: 600;
  color: var(--accent-gold);
  text-align: center;
  width: 60px;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumbs a {
  color: var(--text-secondary);
}

.breadcrumbs a:hover {
  color: var(--accent-gold);
}

.breadcrumbs span {
  margin: 0 0.5rem;
}

/* Related links */
.related-block {
  margin: 2rem 0;
  padding: 1.5rem;
  background: rgba(26, 21, 48, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.related-block h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.related-block ul {
  list-style: none;
}

.related-block li {
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-copy {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.footer-disclaimer {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-style: italic;
  max-width: 500px;
  margin: 0 auto;
}

/* Page header for inner pages */
.page-header {
  padding: 2rem 0 1rem;
}

.page-header h1 {
  margin-bottom: 1rem;
}

.page-intro {
  color: var(--text-secondary);
  max-width: 700px;
}

.article-meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

/* Calculator page wrapper */
.calculator-section {
  max-width: 700px;
  margin: 0 auto 2rem;
}

/* Article page */
.article-content {
  max-width: 760px;
  margin: 0 auto;
}

.article-content h2 {
  margin: 2rem 0 1rem;
}

.article-content h3 {
  margin: 1.5rem 0 0.75rem;
  color: var(--accent-muted);
}

.article-content p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.article-content ul, .article-content ol {
  color: var(--text-secondary);
  margin: 0 0 1rem 1.5rem;
}

/* Desktop */
@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .main-nav ul {
    display: flex;
  }

  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .compat-persons {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding: 4rem 0 2.5rem;
    text-align: left;
  }

  .hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
  }

  .hero-subtitle {
    margin: 0;
    max-width: none;
  }

  .hero-calculator {
    margin: 0;
    max-width: none;
  }
}

@media (min-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body::before {
    animation: none;
    opacity: 0.8;
  }

  .card:hover,
  .btn:hover {
    transform: none;
  }

  .result-block.visible {
    animation: none;
  }

  .result-number-animate {
    animation: none;
  }
}