/* =========================================================
   AlternativeDatingApps.com — Design System
   ========================================================= */

/* ===== 1. RESET & TOKENS ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --primary: #6B4CE6;
  --primary-dark: #5036BD;
  --accent: #D85D91;
  --bg-main: #F8F7FB;
  --surface: #FFFFFF;
  --text-main: #242233;
  --text-secondary: #6F6B7C;
  --border: #E7E3EE;
  --soft-purple: #F0ECFF;
  --soft-pink: #FCEEF4;
  --success: #287D62;

  /* Category accents */
  --cat-alt-dating: #6B4CE6;
  --cat-lgbtq: #B64D8C;
  --cat-kink: #8A6448;
  --cat-friendship: #25877B;
  --cat-guides: #416AC5;
  --cat-safety: #477D63;

  /* Typography */
  --font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --container: 1160px;
  --article-width: 740px;
  --wide-width: 960px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(36, 34, 51, 0.06);
  --shadow-md: 0 4px 16px rgba(36, 34, 51, 0.08);
  --shadow-lg: 0 12px 32px rgba(36, 34, 51, 0.10);

  /* Transitions */
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-main);
  background: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===== 2. TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

h1 { font-size: 46px; }
h2 { font-size: 32px; }
h3 { font-size: 23px; }
h4 { font-size: 19px; }

@media (max-width: 768px) {
  body { font-size: 16px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  h3 { font-size: 20px; }
}

/* ===== 3. LAYOUT ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 4. HEADER / NAV ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.site-logo:hover { color: var(--primary); }

.nav-desktop {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-desktop a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-desktop a:hover,
.nav-desktop a.active { color: var(--primary); }

/* Explore Topics dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-dropdown > a::after {
  content: '▾';
  font-size: 10px;
}
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 10px 0;
  min-width: 260px;
  display: none;
  margin-top: 10px;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  display: block;
}
.nav-dropdown-menu a {
  display: block;
  padding: 10px 22px;
  font-size: 14.5px;
  color: var(--text-secondary);
}
.nav-dropdown-menu a:hover {
  background: var(--soft-purple);
  color: var(--primary);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  position: relative;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--text-main);
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after  { top: 7px;  }

@media (max-width: 900px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* Mobile nav panel */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--surface);
  z-index: 200;
  padding: 24px;
  overflow-y: auto;
}
.nav-mobile.open { display: block; }
.nav-mobile-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 44px;
  height: 44px;
  font-size: 26px;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-mobile-inner {
  max-width: 480px;
  margin: 40px auto 0;
}
.nav-mobile h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin: 24px 0 8px;
}
.nav-mobile a {
  display: block;
  padding: 14px 0;
  font-size: 17px;
  color: var(--text-main);
  border-bottom: 1px solid var(--border);
}

/* ===== 5. BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15.5px;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: 100px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  cursor: pointer;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--soft-purple);
  color: var(--primary-dark);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 14px 12px;
  font-weight: 500;
}
.btn-ghost:hover { color: var(--primary); }

/* ===== 6. HERO ===== */
.hero {
  background: linear-gradient(180deg, var(--soft-purple) 0%, var(--bg-main) 100%);
  padding: 80px 0 72px;
  text-align: center;
}
.hero h1 {
  font-size: 52px;
  max-width: 820px;
  margin: 0 auto 20px;
  letter-spacing: -0.03em;
}
.hero .hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 660px;
  margin: 0 auto 36px;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .hero { padding: 56px 0 48px; }
  .hero h1 { font-size: 34px; }
  .hero .hero-sub { font-size: 16px; }
}

/* ===== 7. SECTIONS ===== */
.section {
  padding: 72px 0;
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-header h2 {
  margin-bottom: 14px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 17px;
}
@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .section-header { margin-bottom: 32px; }
}

/* ===== 8. CATEGORY CARDS ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.category-card .cat-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
  width: fit-content;
  color: #FFFFFF;
}
.cat-alt-dating  .cat-label { background: var(--cat-alt-dating); }
.cat-lgbtq       .cat-label { background: var(--cat-lgbtq); }
.cat-kink        .cat-label { background: var(--cat-kink); }
.cat-friendship  .cat-label { background: var(--cat-friendship); }
.cat-guides      .cat-label { background: var(--cat-guides); }
.cat-safety      .cat-label { background: var(--cat-safety); }

.category-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}
.category-card p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}
.category-card .card-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.category-card .card-link::after {
  content: '→';
  transition: transform var(--transition);
}
.category-card:hover .card-link::after {
  transform: translateX(3px);
}

@media (max-width: 900px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .category-grid { grid-template-columns: 1fr; }
}

/* ===== 9. ARTICLE CARDS ===== */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.article-card .card-body {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}
.article-card .article-meta {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 10px;
}
.article-card h3 {
  font-size: 19px;
  line-height: 1.35;
  margin-bottom: 10px;
}
.article-card .excerpt {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}
.article-card .card-date {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.article-card .card-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-card .card-link::after {
  content: '→';
  transition: transform var(--transition);
}
.article-card:hover .card-link::after {
  transform: translateX(3px);
}

@media (max-width: 900px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .article-grid { grid-template-columns: 1fr; }
}

/* ===== 10. EMPTY STATE ===== */
.empty-state {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-secondary);
}
.empty-state p { font-size: 16px; }

/* ===== 11. EDITORIAL VALUES / FEATURE BLOCKS ===== */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.value-block {
  text-align: left;
}
.value-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--soft-purple);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}
.value-block h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.value-block p {
  font-size: 15px;
  color: var(--text-secondary);
}
@media (max-width: 768px) {
  .values-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ===== 12. APP RECOMMENDATION CARD ===== */
.app-rec {
  background: linear-gradient(135deg, var(--soft-purple) 0%, var(--soft-pink) 100%);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  margin: 0 auto;
  max-width: var(--wide-width);
}
.app-rec h3 {
  font-size: 24px;
  margin-bottom: 12px;
}
.app-rec p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 24px;
}
@media (max-width: 768px) {
  .app-rec { padding: 32px 22px; }
  .app-rec h3 { font-size: 20px; }
}

/* ===== 13. TRANSPARENCY ===== */
.transparency-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: var(--wide-width);
  margin: 0 auto;
}
.transparency-block h2 {
  font-size: 22px;
  margin-bottom: 14px;
}
.transparency-block p {
  font-size: 15.5px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ===== 14. FOOTER ===== */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  margin-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14.5px;
  color: var(--text-main);
  padding: 5px 0;
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  font-size: 13.5px;
  color: var(--text-secondary);
  text-align: center;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ===== 15. CATEGORY / ARTICLE PAGE ===== */
.page-hero {
  background: linear-gradient(180deg, var(--soft-purple) 0%, var(--bg-main) 100%);
  padding: 56px 0 40px;
}
.breadcrumbs {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 18px;
}
.breadcrumbs a {
  color: var(--text-secondary);
}
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs .sep {
  margin: 0 8px;
  color: var(--border);
}

.page-hero h1 {
  font-size: 40px;
  max-width: 760px;
  margin-bottom: 14px;
}
.page-hero .page-intro {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
}

.article-header {
  padding: 48px 0 32px;
}
.article-header h1 {
  font-size: 40px;
  margin-bottom: 18px;
}
.article-header .article-summary {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 22px;
}
.article-meta-line {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
}
.article-meta-line .dot {
  color: var(--border);
}

.article-content {
  padding: 20px 0 40px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-main);
}
.article-content h2 {
  font-size: 28px;
  margin: 40px 0 16px;
}
.article-content h3 {
  font-size: 21px;
  margin: 28px 0 12px;
}
.article-content p {
  margin-bottom: 20px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 22px 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content blockquote {
  border-left: 3px solid var(--primary);
  padding-left: 20px;
  color: var(--text-secondary);
  font-style: italic;
  margin: 24px 0;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th,
.article-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content th {
  background: var(--soft-purple);
  font-weight: 600;
}

/* Table of contents */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0 32px;
}
.toc h4 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.toc ol {
  margin-left: 20px;
  font-size: 15px;
}
.toc li { margin-bottom: 6px; }
.toc a { color: var(--text-main); }
.toc a:hover { color: var(--primary); }

/* Article page layout */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 56px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.article-sidebar {
  position: sticky;
  top: 100px;
  align-self: start;
}
@media (max-width: 960px) {
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar { position: static; }
}

/* ===== 16. LEGAL / CONTENT PAGES ===== */
.page-content {
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 48px 24px 72px;
}
.page-content h1 { font-size: 36px; margin-bottom: 18px; }
.page-content h2 { font-size: 24px; margin: 36px 0 14px; }
.page-content h3 { font-size: 19px; margin: 24px 0 10px; }
.page-content p { margin-bottom: 18px; }
.page-content ul,
.page-content ol { margin: 0 0 20px 24px; }
.page-content li { margin-bottom: 8px; }
.page-content a { text-decoration: underline; text-decoration-color: var(--border); }
.page-content a:hover { text-decoration-color: var(--primary); }

/* ===== 17. ACCESSIBILITY ===== */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

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

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

/* ===== 18. UTILITIES ===== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }