@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  /* Color Palette - Fresh Teal Mint Style */
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-light: #ccfbf1;
  --accent: #10b981;
  --accent-light: #d1fae5;
  
  --bg-primary: #f0fdfa; /* Super soft mint teal */
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  
  --border-color: #e2e8f0;
  --border-teal: #99f6e4;
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(13, 148, 136, 0.15);
  --glass-shadow: 0 8px 32px 0 rgba(13, 148, 136, 0.05);
  
  /* Layout & Sizing */
  --container-width: 1200px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

/* Base resets */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Outfit', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; margin-bottom: 1.5rem; text-align: center; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }

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

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

.section-padding {
  padding: 100px 0;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--glass-shadow);
  height: 70px;
}

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

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 2rem;
  animation: float 3s ease-in-out infinite;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

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

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

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

.btn-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.45);
  filter: brightness(1.05);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.75rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary-hover);
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 24px;
  border: 1px solid var(--border-teal);
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

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

/* Glass Card Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.glass-card-mockup {
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  padding: 30px;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 5;
}

.mockup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.mockup-dots {
  display: flex;
  gap: 6px;
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot:nth-child(1) { background: #ef4444; }
.mockup-dot:nth-child(2) { background: #eab308; }
.mockup-dot:nth-child(3) { background: #22c55e; }

.mockup-status {
  background: var(--accent-light);
  color: #065f46;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.mockup-speed {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.mockup-chart {
  height: 80px;
  background: linear-gradient(180deg, rgba(13, 148, 136, 0.2), transparent);
  border-radius: var(--radius-sm);
  position: relative;
  margin-top: 15px;
  overflow: hidden;
  border-bottom: 2px solid var(--primary);
}

.mockup-grid-lines {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(rgba(13, 148, 136, 0.05) 1px, transparent 1px),
              linear-gradient(90deg, rgba(13, 148, 136, 0.05) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Floating elements */
.floating-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 1;
}

.circle-1 {
  width: 300px;
  height: 300px;
  background: rgba(13, 148, 136, 0.25);
  top: -50px;
  right: -50px;
  animation: float 6s ease-in-out infinite;
}

.circle-2 {
  width: 250px;
  height: 250px;
  background: rgba(16, 185, 129, 0.2);
  bottom: -50px;
  left: -50px;
  animation: float 8s ease-in-out infinite alternate;
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(3deg); }
}

/* Core Benefits */
.section-header {
  max-width: 700px;
  margin: 0 auto 60px;
  text-align: center;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.benefit-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 35px 30px;
  transition: var(--transition-smooth);
}

.benefit-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-light);
  box-shadow: 0 20px 40px rgba(13, 148, 136, 0.06);
}

.benefit-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.pricing-card.popular {
  border-color: var(--primary);
  box-shadow: 0 20px 45px rgba(13, 148, 136, 0.08);
  transform: scale(1.03);
}

@media (max-width: 768px) {
  .pricing-card.popular {
    transform: none;
  }
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.8rem;
  font-weight: 700;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 24px;
}

.plan-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.plan-features {
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.plan-features li::before {
  content: '✓';
  color: var(--primary);
  font-weight: bold;
}

.plan-features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.plan-features li.disabled::before {
  content: '✗';
  color: var(--text-muted);
}

.pricing-card .btn-cta {
  width: 100%;
  justify-content: center;
}

/* User Guides & Tutorials */
.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}

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

.tab-content {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.02);
}

.tab-content.active {
  display: block;
}

.guide-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.step-text h4 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.step-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Target Users */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
}

.person-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  transition: var(--transition-smooth);
}

.person-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-light);
  box-shadow: 0 15px 30px rgba(13, 148, 136, 0.05);
}

.person-avatar {
  font-size: 2.5rem;
  margin-bottom: 16px;
  display: inline-block;
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.review-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  position: relative;
}

.review-stars {
  color: #fbbf24;
  margin-bottom: 15px;
}

.review-text {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.author-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.05rem;
  user-select: none;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active {
  border-color: var(--primary);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-bottom: 20px;
}

.faq-icon {
  font-size: 1.25rem;
  transition: var(--transition-smooth);
}

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

/* Article Directory (Grid cards) */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.article-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.article-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-light);
  box-shadow: 0 20px 40px rgba(13, 148, 136, 0.05);
}

.article-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-card-tag {
  align-self: flex-start;
  background: var(--primary-light);
  color: var(--primary-hover);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.article-card-title {
  font-size: 1.25rem;
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.read-more-link {
  color: var(--primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.read-more-link:hover {
  color: var(--primary-hover);
}

/* SEO Article Template Layout */
.article-page-body {
  background: var(--bg-primary);
  padding-top: calc(var(--header-height) + 40px);
}

.article-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 40px;
}

@media (max-width: 1024px) {
  .article-wrapper {
    grid-template-columns: 1fr;
  }
}

.article-main {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.01);
}

.article-breadcrumbs {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.article-breadcrumbs a {
  color: var(--primary);
}

.article-post-header {
  margin-bottom: 35px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
}

.article-post-title {
  font-size: 2.5rem;
  line-height: 1.25;
  margin-bottom: 20px;
}

.article-post-meta {
  display: flex;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-content-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #334155;
}

.article-content-body h2 {
  font-size: 1.75rem;
  margin: 40px 0 20px;
  text-align: left;
  position: relative;
  padding-left: 14px;
}

.article-content-body h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: var(--radius-sm);
}

.article-content-body h3 {
  font-size: 1.35rem;
  margin: 30px 0 15px;
}

.article-content-body p {
  margin-bottom: 24px;
}

.article-content-body ul {
  list-style: disc;
  margin-left: 20px;
  margin-bottom: 24px;
}

.article-content-body li {
  margin-bottom: 8px;
}

.article-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
}

.article-content-body th, .article-content-body td {
  border: 1px solid var(--border-color);
  padding: 12px;
  text-align: left;
}

.article-content-body th {
  background: var(--bg-primary);
  font-weight: 700;
}

.article-callout {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 20px;
  margin: 30px 0;
}

/* Sidebar Widgets */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.sidebar-widget {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.widget-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}

.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.rec-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.rec-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.rec-title {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.4;
}

.rec-title:hover {
  color: var(--primary);
}

.rec-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Footer structure */
.footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 80px 0 40px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-title {
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: white;
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
}

/* Legal text pages */
.legal-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.01);
}

/* Mobile Responsiveness for all elements */
@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  
  .section-padding {
    padding: 60px 0;
  }
  
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 40px;
    gap: 24px;
    align-items: stretch;
    transition: var(--transition-smooth);
    border-top: 1px solid var(--border-color);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-link {
    font-size: 1.15rem;
  }
  
  .btn-cta {
    justify-content: center;
  }
  
  .tab-content {
    padding: 24px;
  }
}