/* The Best VPN - Main Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --color-primary: #16a34a;
  --color-primary-hover: #15803d;
  --color-secondary: #f97316;
  --color-secondary-hover: #ea580c;
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-elevated: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 24px;
  }
}

/* Header */
.header {
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 16px;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo svg {
  width: 28px;
  height: 28px;
}

.nav {
  display: none;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
    gap: 24px;
  }
}

.nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--color-primary);
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-nav {
  display: none;
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  padding: 16px;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

/* Hero Section */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: 64px 0 48px;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.hero-badge svg {
  width: 14px;
  height: 14px;
  color: var(--color-primary);
}

.hero h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-text);
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 48px;
  }
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 18px;
  }
}

.trust-signals {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.trust-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
}

/* Section */
.section {
  padding: 48px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 64px 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: 32px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 32px;
  }
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* VPN Card */
.vpn-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.vpn-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}

.vpn-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.vpn-rank {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--color-primary);
  color: white;
  font-size: 14px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
}

.vpn-card-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .vpn-card-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.vpn-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.vpn-logo {
  width: 64px;
  height: 64px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  overflow: hidden;
}

.vpn-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.vpn-name-wrap h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.vpn-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
}

.vpn-rating {
  display: flex;
  align-items: center;
  gap: 8px;
}

.vpn-score {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
}

.vpn-stars {
  display: flex;
  gap: 2px;
  color: #fbbf24;
}

.vpn-stars svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.vpn-description {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.vpn-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .vpn-features {
    grid-template-columns: 1fr 1fr;
  }
}

.vpn-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.vpn-feature svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.vpn-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (min-width: 640px) {
  .vpn-actions {
    flex-direction: row;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

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

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

.btn-secondary {
  background: var(--color-secondary);
  color: white;
}

.btn-secondary:hover {
  background: var(--color-secondary-hover);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  background: var(--color-surface);
  border-color: var(--color-text-muted);
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* Comparison Table */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: 32px;
}

.comparison-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
}

.comparison-table th {
  background: var(--color-surface);
  padding: 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
}

.comparison-table td {
  padding: 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

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

.comparison-table tr:hover td {
  background: var(--color-surface);
}

.table-vpn {
  display: flex;
  align-items: center;
  gap: 12px;
}

.table-vpn-logo {
  width: 40px;
  height: 40px;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
  overflow: hidden;
}

.table-vpn-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.table-vpn-name {
  font-weight: 600;
}

.table-check {
  color: var(--color-primary);
}

.table-btn {
  padding: 8px 16px;
  font-size: 13px;
}

/* Device Cards */
.device-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (min-width: 640px) {
  .device-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .device-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.device-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 16px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.2s;
}

.device-card:hover {
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.device-icon {
  width: 48px;
  height: 48px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.device-icon svg {
  width: 24px;
  height: 24px;
}

.device-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.device-card-arrow {
  color: var(--color-text-muted);
}

.device-card-arrow svg {
  width: 16px;
  height: 16px;
}

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

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
}

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

.faq-question svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.2s;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding-bottom: 20px;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Footer */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

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

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.affiliate-disclosure {
  background: var(--color-surface-elevated);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

/* How VPN Works Section */
.how-vpn-works {
  max-width: 900px;
  margin: 0 auto;
}

.vpn-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding: 32px 16px;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .vpn-diagram {
    gap: 16px;
    flex-wrap: nowrap;
  }
}

.diagram-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px;
  text-align: center;
}

.diagram-step.highlight {
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.diagram-step.highlight .diagram-icon {
  background: rgba(255,255,255,0.2);
  color: white;
}

.diagram-icon {
  width: 64px;
  height: 64px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.diagram-step span {
  font-size: 14px;
  font-weight: 600;
}

.diagram-arrow {
  color: var(--color-text-muted);
  display: none;
}

@media (min-width: 768px) {
  .diagram-arrow {
    display: block;
  }
}

.vpn-explanation {
  text-align: center;
}

.vpn-explanation p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

/* Install Steps */
.install-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 40px;
}

@media (min-width: 768px) {
  .install-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

.install-step {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.step-number {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Install Tips */
.install-tips {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.install-tips h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.install-tips ul {
  list-style: none;
  padding: 0;
}

.install-tips li {
  padding: 10px 0;
  padding-left: 28px;
  position: relative;
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border-light);
}

.install-tips li:last-child {
  border-bottom: none;
}

.install-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px;
}

.install-tips li strong {
  color: var(--color-text);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  padding: 16px 0;
}

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

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

.breadcrumb svg {
  width: 14px;
  height: 14px;
}

/* Page Hero (for subpages) */
.page-hero {
  background: var(--color-surface);
  padding: 32px 0;
  text-align: center;
}

@media (min-width: 768px) {
  .page-hero {
    padding: 48px 0;
  }
}

.page-hero h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .page-hero h1 {
    font-size: 40px;
  }
}

.page-hero p {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Content Section */
.content-section {
  padding: 32px 0;
}

.content-section h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
}

.content-section p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.content-section ul {
  margin: 16px 0;
  padding-left: 24px;
}

.content-section li {
  margin-bottom: 8px;
  color: var(--color-text-secondary);
}

/* Internal Links Section */
.internal-links {
  background: var(--color-surface);
  padding: 32px 0;
}

.internal-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 768px) {
  .internal-links-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.internal-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.2s;
}

.internal-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.internal-link svg {
  width: 16px;
  height: 16px;
}

/* Sticky Compare Button (Mobile) */
.sticky-compare {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  z-index: 50;
}

@media (max-width: 767px) {
  .sticky-compare {
    display: block;
  }
}

.sticky-compare .btn {
  width: 100%;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-8 {
  margin-top: 32px;
}

.mb-4 {
  margin-bottom: 16px;
}

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