/* ============================================
   PropertyMind - Luxury Real Estate Magazine
   ============================================ */

/* --- CSS Variables --- */
:root {
  --navy: #16213e;
  --navy-dark: #0d1528;
  --navy-light: #1e2d52;
  --copper: #b87333;
  --copper-light: #d4954e;
  --copper-dark: #96592a;
  --copper-glow: rgba(184, 115, 51, 0.15);
  --white: #ffffff;
  --off-white: #f8f7f5;
  --cream: #f2efe9;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --text-primary: #1a1a2e;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-sm: 0 1px 3px rgba(22,33,62,0.06);
  --shadow-md: 0 4px 20px rgba(22,33,62,0.08);
  --shadow-lg: 0 12px 40px rgba(22,33,62,0.12);
  --shadow-xl: 0 20px 60px rgba(22,33,62,0.16);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: 'Source Serif 4', 'Georgia', serif;
  color: var(--text-primary);
  background: var(--off-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', 'Georgia', serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}

h1 { font-size: clamp(2.2rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

a {
  color: var(--copper);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--copper-dark); }

/* --- Utility --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  margin-bottom: 1rem;
  position: relative;
}

.section-subtitle {
  font-family: 'DM Sans', sans-serif;
  font-size: 1.1rem;
  color: var(--slate-500);
  max-width: 640px;
  margin-bottom: 3rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--copper), var(--copper-light));
  margin: 1.25rem auto 0;
  border-radius: 2px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(22,33,62,0.06);
  transition: all var(--transition);
}

.nav.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--navy);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--copper);
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-logo-text {
  font-family: 'Playfair Display', serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
}

.nav-logo-text span {
  color: var(--copper);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--slate-600);
  letter-spacing: 0.02em;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--copper);
  transition: width var(--transition);
}

.nav-links a:hover { color: var(--navy); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 24px;
  background: var(--navy);
  color: var(--white) !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-cta::after { display: none !important; }
.nav-cta:hover {
  background: var(--copper) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all var(--transition);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(13,21,40,0.3) 0%, rgba(13,21,40,0.85) 100%),
    linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 40%, var(--navy-light) 100%);
}

/* Skyline silhouette */
.hero-bg::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 300px;
  background:
    /* Building cluster left */
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 5% 100% / 3% 55% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 8% 100% / 4% 70% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 12% 100% / 2.5% 50% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 15% 100% / 5% 80% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 20% 100% / 3% 60% no-repeat,
    /* Building cluster center */
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 30% 100% / 4% 90% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 34% 100% / 3.5% 75% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 38% 100% / 5% 95% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 43% 100% / 3% 65% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 47% 100% / 4% 85% no-repeat,
    /* Tall tower center-right */
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 55% 100% / 2% 100% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 57% 100% / 4% 80% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 62% 100% / 3% 70% no-repeat,
    /* Building cluster right */
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 70% 100% / 5% 75% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 75% 100% / 3.5% 88% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 79% 100% / 4% 65% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 84% 100% / 3% 78% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 88% 100% / 5% 55% no-repeat,
    linear-gradient(0deg, var(--navy-dark) 0%, var(--navy-dark) 40%, transparent 40%) 93% 100% / 4% 72% no-repeat;
  opacity: 0.4;
}

/* Copper glow */
.hero-bg::after {
  content: '';
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(184,115,51,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--copper-light);
  padding: 8px 20px;
  border: 1px solid rgba(184,115,51,0.3);
  border-radius: 100px;
  margin-bottom: 2rem;
  background: rgba(184,115,51,0.08);
}

.hero h1 {
  color: var(--white);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  max-width: 900px;
  margin: 0 auto 1.5rem;
  line-height: 1.08;
}

.hero h1 em {
  font-style: italic;
  color: var(--copper-light);
}

.hero-desc {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--slate-300);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--copper);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--copper-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(184,115,51,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,0.25);
}
.btn-outline:hover {
  border-color: var(--copper);
  color: var(--copper-light);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero-stat-value {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--copper-light);
  display: block;
}

.hero-stat-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  color: var(--slate-400);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* --- Sections --- */
.section {
  padding: 5rem 0;
}

.section-alt {
  background: var(--white);
}

.section-dark {
  background: var(--navy-dark);
  color: var(--white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: var(--slate-300);
}

.section-dark .section-label {
  color: var(--copper-light);
}

/* --- Guide Cards --- */
.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.guide-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: 1px solid rgba(22,33,62,0.04);
}

.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.guide-card-img {
  height: 200px;
  position: relative;
  overflow: hidden;
}

.guide-card-img .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.guide-card-img .icon-wrap {
  width: 56px;
  height: 56px;
  background: rgba(184,115,51,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.guide-card-number {
  position: absolute;
  top: 16px;
  left: 16px;
  font-family: 'Playfair Display', serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--copper-light);
  background: rgba(13,21,40,0.6);
  padding: 4px 12px;
  border-radius: 100px;
  backdrop-filter: blur(8px);
}

.guide-card-body {
  padding: 1.5rem;
}

.guide-card-tag {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--copper);
  margin-bottom: 0.5rem;
  display: block;
}

.guide-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.guide-card p {
  font-size: 0.92rem;
  color: var(--slate-500);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.guide-card-link {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--copper);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.guide-card-link svg {
  transition: transform var(--transition);
}

.guide-card:hover .guide-card-link svg {
  transform: translateX(4px);
}

/* --- Article / Guide Detail --- */
.guide-article {
  display: none;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.guide-article.active {
  display: block;
  animation: fadeUp 0.4s ease;
}

.guide-article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--slate-200);
}

.guide-article-back {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--copper);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 1.5rem;
  background: none;
  border: none;
  padding: 0;
}

.guide-article-back:hover { color: var(--copper-dark); }

.guide-article h2 {
  margin-bottom: 1rem;
}

.guide-article-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  color: var(--slate-500);
}

.guide-article-content h3 {
  margin: 2rem 0 1rem;
  color: var(--navy);
}

.guide-article-content h4 {
  margin: 1.5rem 0 0.75rem;
  color: var(--navy-light);
}

.guide-article-content p {
  margin-bottom: 1.25rem;
}

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

.guide-article-content li {
  margin-bottom: 0.5rem;
  font-size: 1.02rem;
}

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

.callout {
  background: var(--copper-glow);
  border-left: 4px solid var(--copper);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.5rem 0;
}

.callout p {
  color: var(--navy);
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* --- Calculators --- */
.calculators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 2rem;
}

.calc-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(22,33,62,0.04);
}

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

.calc-card > p {
  font-size: 0.9rem;
  color: var(--slate-500);
  margin-bottom: 1.5rem;
}

.calc-form-group {
  margin-bottom: 1rem;
}

.calc-form-group label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-600);
  display: block;
  margin-bottom: 0.35rem;
  letter-spacing: 0.02em;
}

.calc-input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--slate-50);
  transition: border-color var(--transition);
  outline: none;
}

.calc-input:focus {
  border-color: var(--copper);
  background: var(--white);
}

.calc-btn {
  width: 100%;
  margin-top: 0.5rem;
}

.calc-results {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--slate-200);
  display: none;
}

.calc-results.show { display: block; animation: fadeUp 0.3s ease; }

.calc-result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--slate-100);
}

.calc-result-item:last-child { border-bottom: none; }

.calc-result-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--slate-600);
}

.calc-result-value {
  font-family: 'Playfair Display', serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
}

.calc-result-value.positive { color: #16a34a; }
.calc-result-value.negative { color: #dc2626; }

/* --- Comparison Tables --- */
.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(22,33,62,0.04);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.92rem;
}

.comp-table thead th {
  background: var(--navy);
  color: var(--white);
  font-weight: 600;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.comp-table thead th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.comp-table thead th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.comp-table tbody td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--slate-100);
  color: var(--text-secondary);
  vertical-align: top;
}

.comp-table tbody tr:last-child td {
  border-bottom: none;
}

.comp-table tbody tr:hover {
  background: var(--slate-50);
}

.comp-table tbody td:first-child {
  font-weight: 600;
  color: var(--text-primary);
}

.comp-table .check { color: #16a34a; font-weight: 700; }
.comp-table .cross { color: #dc2626; font-weight: 700; }

/* --- Glossary --- */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.glossary-item {
  background: var(--white);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--copper);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.glossary-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.glossary-term {
  font-family: 'Playfair Display', serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.35rem;
}

.glossary-def {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  color: var(--slate-500);
  line-height: 1.55;
  margin-bottom: 0;
}

/* --- FAQ --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid rgba(22,33,62,0.04);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  text-align: left;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--slate-50);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--copper);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- Ad Slots --- */
.ad-slot {
  max-width: 800px;
  margin: 2.5rem auto;
  padding: 2rem;
  background: var(--slate-50);
  border: 1px dashed var(--slate-200);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  color: var(--slate-400);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* --- Footer --- */
.footer {
  background: var(--navy-dark);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--slate-400);
  font-size: 0.9rem;
  margin-top: 1rem;
  line-height: 1.6;
}

.footer h4 {
  color: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li { margin-bottom: 0.6rem; }

.footer-links a {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--slate-400);
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--copper-light); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  color: var(--slate-500);
}

/* --- Disclaimer --- */
.disclaimer-box {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.disclaimer-box h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  color: var(--slate-700);
}

.disclaimer-box p {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--slate-500);
  line-height: 1.7;
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-on-scroll {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.hidden {
  opacity: 0;
  transform: translateY(30px);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--white);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  border-top: 1px solid var(--slate-100);
}

.mobile-menu.open { display: block; animation: fadeIn 0.2s ease; }

.mobile-menu a {
  display: block;
  padding: 0.75rem 0;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  color: var(--slate-700);
  border-bottom: 1px solid var(--slate-100);
}

.mobile-menu a:last-child { border-bottom: none; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 3.5rem 0; }
  .hero-stats { flex-direction: column; gap: 1.5rem; }
  .guides-grid { grid-template-columns: 1fr; }
  .calculators-grid { grid-template-columns: 1fr; }
  .glossary-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .calc-card { padding: 1.5rem; }
  .hero-content { padding: 100px 16px 60px; }
}

/* --- Scroll to top button --- */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--navy);
  color: var(--copper);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.scroll-top.show {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--copper);
  color: var(--white);
  transform: translateY(-3px);
}

/* Special gradient cards for different guide topics */
.guide-grad-1 { background: linear-gradient(135deg, #16213e 0%, #1e3a5f 100%); }
.guide-grad-2 { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%); }
.guide-grad-3 { background: linear-gradient(135deg, #0d1528 0%, #1e2d52 100%); }
.guide-grad-4 { background: linear-gradient(135deg, #16213e 0%, #2d4a7a 100%); }
.guide-grad-5 { background: linear-gradient(135deg, #1e293b 0%, #334155 100%); }
.guide-grad-6 { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); }
.guide-grad-7 { background: linear-gradient(135deg, #16213e 0%, #1e3a5f 50%, #0d1528 100%); }
.guide-grad-8 { background: linear-gradient(135deg, #1a1a2e 0%, #2d3a5e 100%); }
.guide-grad-9 { background: linear-gradient(135deg, #0d1528 0%, #16213e 60%, #1e2d52 100%); }
.guide-grad-10 { background: linear-gradient(135deg, #16213e 0%, #475569 100%); }

/* Tab system for comparisons */
.tab-nav {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--slate-200);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--slate-500);
  position: relative;
  transition: color var(--transition);
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.tab-btn.active {
  color: var(--navy);
}

.tab-btn.active::after {
  transform: scaleX(1);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeUp 0.3s ease;
}

/* Property card style for featured items */
.property-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.property-feature {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(22,33,62,0.04);
  transition: all var(--transition);
}

.property-feature:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.property-feature-icon {
  width: 64px;
  height: 64px;
  background: var(--copper-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.5rem;
}

.property-feature h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.property-feature p {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  color: var(--slate-500);
  margin-bottom: 0;
}

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

/* Guide navigation at bottom of articles */
.guide-nav-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--slate-200);
}

.guide-nav-btn {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--copper);
  background: var(--copper-glow);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.guide-nav-btn:hover {
  background: var(--copper);
  color: var(--white);
}

/* Grain overlay for texture */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}