/* ============================================
   Girls In Crypto — Design System & Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --primary: #6B21A8;
  --primary-light: #9333EA;
  --primary-dark: #581C87;
  --accent: #D4A843;
  --accent-light: #E5C36E;
  --accent-dark: #B8912E;
  --dark-bg: #1A0B2E;
  --dark-bg-lighter: #2D1B4E;
  --light-bg: #FAF5FF;
  --light-bg-alt: #F3E8FF;
  --text-dark: #1F2937;
  --text-light: #F3E8FF;
  --text-muted: #6B7280;
  --text-muted-light: #C4B5D0;
  --white: #FFFFFF;
  --border: #E5E7EB;
  --border-purple: #DDD6FE;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-purple: 0 4px 20px rgba(107, 33, 168, 0.2);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: 0.3s ease;
  --max-width: 1200px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', Georgia, serif;
  line-height: 1.2;
  color: var(--dark-bg);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

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

ul { list-style: none; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-full);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(107, 33, 168, 0.35);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--dark-bg);
  box-shadow: 0 4px 15px rgba(212, 168, 67, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(212, 168, 67, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(26, 11, 46, 0.95);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--dark-bg);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted-light);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--dark-bg) !important;
  border-radius: var(--radius-full);
  font-weight: 600 !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212, 168, 67, 0.4);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--dark-bg) 0%, #2D1054 50%, var(--primary-dark) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(147, 51, 234, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-40px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(212, 168, 67, 0.15);
  border: 1px solid rgba(212, 168, 67, 0.3);
  border-radius: var(--radius-full);
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 20px;
  font-weight: 700;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-muted-light);
  font-size: 1.15rem;
  margin-bottom: 36px;
  max-width: 560px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat h3 {
  color: var(--accent);
  font-size: 2rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}

.hero-stat p {
  color: var(--text-muted-light);
  font-size: 0.875rem;
  margin-bottom: 0;
}

/* --- Section Styles --- */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--dark-bg);
  color: var(--text-light);
}

.section-light {
  background: var(--light-bg);
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header .label {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-top: 16px;
}

.section-dark .section-header h2 {
  color: var(--white);
}

.section-dark .section-header p {
  color: var(--text-muted-light);
}

/* --- Feature Cards --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-md);
  padding: 40px 32px;
  text-align: center;
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-purple);
  border-color: var(--primary-light);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--light-bg-alt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.feature-card h3 {
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Article Cards --- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

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

.article-card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.article-card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.2));
}

.article-card-body {
  padding: 24px;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.article-category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--light-bg-alt);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-level {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  transition: color var(--transition);
}

.article-card:hover .article-card-body h3 {
  color: var(--primary);
}

.article-card-body p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.read-more:hover {
  gap: 10px;
}

.read-time {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* --- Newsletter Section --- */
.newsletter {
  background: linear-gradient(135deg, var(--dark-bg), var(--primary-dark));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.newsletter h2 {
  color: var(--white);
  margin-bottom: 12px;
  position: relative;
}

.newsletter p {
  color: var(--text-muted-light);
  font-size: 1.1rem;
  margin-bottom: 32px;
  position: relative;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: 12px;
  position: relative;
}

.newsletter-form input {
  flex: 1;
  padding: 16px 24px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: all var(--transition);
}

.newsletter-form input::placeholder {
  color: var(--text-muted-light);
}

.newsletter-form input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.12);
}

/* --- Footer --- */
.footer {
  background: var(--dark-bg);
  color: var(--text-muted-light);
  padding: 60px 0 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: var(--dark-bg);
  transform: translateY(-3px);
}

.footer-column h4 {
  color: var(--white);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-column a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  transition: all var(--transition);
}

.footer-column a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: var(--accent);
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* --- Page Header (inner pages) --- */
.page-header {
  background: linear-gradient(135deg, var(--dark-bg) 0%, #2D1054 50%, var(--primary-dark) 100%);
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 16px;
  position: relative;
}

.page-header p {
  color: var(--text-muted-light);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  position: relative;
}

.breadcrumb a {
  color: var(--text-muted-light);
}

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

.breadcrumb .separator {
  color: var(--text-muted-light);
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--accent);
}

/* --- About Page --- */
.mission-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.mission-content h2 {
  margin-bottom: 20px;
}

.mission-content .label {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.mission-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.mission-image {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
}

.mission-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(212, 168, 67, 0.2));
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.value-card {
  text-align: center;
  padding: 32px 24px;
}

.value-card .icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.value-card h4 {
  margin-bottom: 10px;
  font-family: 'Inter', sans-serif;
}

.value-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-card {
  text-align: center;
  padding: 40px 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-card h3 {
  color: var(--accent);
  font-size: 2.5rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  margin-bottom: 8px;
}

.stat-card p {
  color: var(--text-muted-light);
  font-size: 0.95rem;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.team-card {
  text-align: center;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

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

.team-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.team-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.team-card .role {
  color: var(--accent-dark);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.team-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-purple);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  outline: none;
  transition: all var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 4px rgba(147, 51, 234, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info {
  padding: 20px 0;
}

.contact-info h3 {
  margin-bottom: 20px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: var(--light-bg-alt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-family: 'Inter', sans-serif;
  margin-bottom: 4px;
}

.contact-info-text p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* FAQ Accordion */
.faq-section {
  margin-top: 60px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item.active {
  border-color: var(--primary-light);
  box-shadow: 0 2px 12px rgba(107, 33, 168, 0.1);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  background: var(--white);
  border: none;
  width: 100%;
  text-align: left;
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  transition: all var(--transition);
}

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

.faq-icon {
  font-size: 1.2rem;
  transition: transform var(--transition);
  color: var(--primary);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* --- Knowledge Base / Learn Page --- */
.search-section {
  max-width: 600px;
  margin: 0 auto 48px;
}

.search-wrapper {
  position: relative;
}

.search-wrapper input {
  width: 100%;
  padding: 18px 24px 18px 52px;
  border: 2px solid var(--border-purple);
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: all var(--transition);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.search-wrapper input:focus {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-purple);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--text-muted);
}

.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 22px;
  border: 2px solid var(--border-purple);
  border-radius: var(--radius-full);
  background: var(--white);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dark);
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--primary-light);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.level-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.level-filters span {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-right: 4px;
}

.level-btn {
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--light-bg-alt);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all var(--transition);
}

.level-btn:hover,
.level-btn.active {
  background: var(--primary);
  color: var(--white);
}

.level-beginner { color: #059669; }
.level-intermediate { color: var(--accent-dark); }
.level-advanced { color: #DC2626; }

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.category-card {
  background: var(--white);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--transition);
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-purple);
  border-color: var(--primary-light);
}

.category-icon {
  width: 50px;
  height: 50px;
  background: var(--light-bg-alt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.category-info h4 {
  font-family: 'Inter', sans-serif;
  margin-bottom: 4px;
}

.category-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.category-count {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 4px;
}

.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.no-results h3 {
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* --- Article Page --- */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

.article-content {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 48px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-content h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 24px;
}

.article-body h2 {
  font-size: 1.5rem;
  margin: 40px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.article-body h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
}

.article-body p {
  margin-bottom: 16px;
  line-height: 1.8;
  color: var(--text-dark);
  font-size: 1.05rem;
}

.article-body ul,
.article-body ol {
  margin: 16px 0;
  padding-left: 24px;
  list-style: disc;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.7;
  color: var(--text-dark);
}

.article-body .callout {
  background: var(--light-bg-alt);
  border-left: 4px solid var(--primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}

.article-body .callout p {
  margin-bottom: 0;
  color: var(--primary-dark);
}

.article-sidebar {
  position: sticky;
  top: 100px;
}

.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border-purple);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-card h4 {
  font-family: 'Inter', sans-serif;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-link {
  display: block;
  padding: 10px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.sidebar-link:last-child {
  border-bottom: none;
}

.sidebar-link:hover {
  color: var(--primary);
  padding-left: 8px;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 968px) {
  .features-grid,
  .articles-grid,
  .team-grid,
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .mission-section,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

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

  .hero-stats {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--dark-bg);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 0;
    transition: right var(--transition);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    padding: 16px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
  }

  .nav-cta {
    margin-top: 16px;
    text-align: center;
    width: 100%;
    display: block !important;
  }

  .hamburger {
    display: flex;
  }

  .features-grid,
  .articles-grid,
  .team-grid,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .section {
    padding: 60px 0;
  }

  .page-header {
    padding: 120px 0 60px;
  }

  .article-content {
    padding: 24px;
  }

  .contact-form {
    padding: 24px;
  }

  .filter-bar {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-card {
    padding: 24px 16px;
  }

  .stat-card h3 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }