/* ============================================================
   Tax & Duty King — Design System
   Brand colours extracted directly from the app (App.css)
   Primary:   #667eea → #764ba2  (purple gradient — header/buttons)
   Secondary: #10b981 → #059669  (green — success/CTA)
   Accent:    #f59e0b → #d97706  (amber — highlights/popular)
   Dark bg:   #1e293b / #0f172a  (dark navy — dark sections)
   Text:      #1e293b (headings) / #64748b (body) / #94a3b8 (muted)
   ============================================================ */

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

:root {
  --brand-purple-start: #667eea;
  --brand-purple-end:   #764ba2;
  --brand-green-start:  #10b981;
  --brand-green-end:    #059669;
  --brand-amber:        #f59e0b;
  --brand-amber-dark:   #d97706;
  --brand-blue:         #3b82f6;
  --brand-blue-dark:    #1d4ed8;

  --dark-900: #0f172a;
  --dark-800: #1e293b;
  --dark-700: #334155;
  --dark-600: #475569;

  --text-primary:   #1e293b;
  --text-secondary: #64748b;
  --text-muted:     #94a3b8;
  --text-white:     #ffffff;

  --surface-white:  #ffffff;
  --surface-light:  #f8fafc;
  --surface-border: #e2e8f0;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.14);
  --shadow-xl:  0 20px 60px rgba(0,0,0,0.18);

  --gradient-brand:   linear-gradient(135deg, var(--brand-purple-start) 0%, var(--brand-purple-end) 100%);
  --gradient-green:   linear-gradient(135deg, var(--brand-green-start) 0%, var(--brand-green-end) 100%);
  --gradient-dark:    linear-gradient(135deg, var(--dark-900) 0%, var(--dark-800) 100%);
  --gradient-hero:    linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
}

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background: var(--surface-white);
  margin: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1rem;
}

.display-1 { font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 800; }
.display-2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 640px; margin: 0 auto 3rem; }

.eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-purple-start);
  margin-bottom: 0.75rem;
  display: block;
}

.eyebrow-light {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.75rem;
  display: block;
}

/* ---------- Navigation ---------- */
.tdk-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 0 2rem;
}

.tdk-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 2rem;
}

.tdk-logo {
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.tdk-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-brand);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.tdk-nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tdk-nav-links a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.tdk-nav-links a:hover,
.tdk-nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.tdk-nav-cta {
  background: var(--gradient-brand) !important;
  color: #fff !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
}

.tdk-nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.tdk-nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ---------- Buttons ---------- */
.btn-tdk {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-tdk-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 15px rgba(102,126,234,0.4);
}

.btn-tdk-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(102,126,234,0.5);
  color: #fff;
  text-decoration: none;
}

.btn-tdk-green {
  background: var(--gradient-green);
  color: #fff;
  box-shadow: 0 4px 15px rgba(16,185,129,0.4);
}

.btn-tdk-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(16,185,129,0.5);
  color: #fff;
  text-decoration: none;
}

.btn-tdk-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-tdk-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  text-decoration: none;
}

.btn-tdk-outline-dark {
  background: transparent;
  color: var(--brand-purple-start);
  border: 2px solid var(--brand-purple-start);
}

.btn-tdk-outline-dark:hover {
  background: var(--brand-purple-start);
  color: #fff;
  text-decoration: none;
}

.btn-tdk-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* ---------- Hero Section ---------- */
.tdk-hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: 6rem 2rem 5rem;
  position: relative;
  overflow: hidden;
}

.tdk-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(102,126,234,0.25) 0%, transparent 70%);
  pointer-events: none;
}

.tdk-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 50%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(118,75,162,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.tdk-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.tdk-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(102,126,234,0.2);
  border: 1px solid rgba(102,126,234,0.4);
  color: #a5b4fc;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.tdk-hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: #fff;
}

.tdk-hero h1 .highlight {
  background: linear-gradient(135deg, #a5b4fc, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tdk-hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.tdk-hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.tdk-hero-trust {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  flex-wrap: wrap;
}

.tdk-hero-trust-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tdk-hero-trust-item svg, .tdk-hero-trust-item .icon {
  color: var(--brand-green-start);
}

/* Hero visual / screenshot side */
.tdk-hero-visual {
  position: relative;
}

.tdk-hero-video-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.1);
  aspect-ratio: 16/9;
  background: #000;
}

.tdk-hero-video-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.tdk-hero-screenshot {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,0.1);
  width: 100%;
  display: block;
}

/* ---------- Stats Bar ---------- */
.tdk-stats {
  background: var(--surface-white);
  border-bottom: 1px solid var(--surface-border);
  padding: 2.5rem 2rem;
}

.tdk-stats-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.tdk-stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.tdk-stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ---------- Section Wrappers ---------- */
.tdk-section {
  padding: 5rem 2rem;
}

.tdk-section-dark {
  background: var(--dark-800);
  color: #fff;
  padding: 5rem 2rem;
}

.tdk-section-light {
  background: var(--surface-light);
  padding: 5rem 2rem;
}

.tdk-container {
  max-width: 1200px;
  margin: 0 auto;
}

.tdk-section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.tdk-section-header h2 {
  color: var(--text-primary);
}

.tdk-section-dark .tdk-section-header h2 {
  color: #fff;
}
.tdk-section-dark .section-title {
  color: #fff;
}
.tdk-section-dark .section-subtitle {
  color: rgba(255,255,255,0.65);
}
.tdk-section-dark h2,
.tdk-section-dark h3 {
  color: #fff;
}
.tdk-section-dark p {
  color: rgba(255,255,255,0.75);
}
.tdk-section-dark li {
  color: rgba(255,255,255,0.75);
}

.tdk-section-dark .section-subtitle {
  color: rgba(255,255,255,0.65);
}

/* ---------- Feature Cards ---------- */
.tdk-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.tdk-feature-card {
  background: var(--surface-white);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tdk-feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.3s;
}

.tdk-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.tdk-feature-card:hover::before {
  opacity: 1;
}

.tdk-feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, rgba(102,126,234,0.12) 0%, rgba(118,75,162,0.12) 100%);
}

.tdk-feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.tdk-feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 1rem;
}

.tdk-feature-card a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand-purple-start);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.tdk-feature-card a:hover { text-decoration: underline; }

/* ---------- How It Works Steps ---------- */
.tdk-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  counter-reset: steps;
}

.tdk-step {
  text-align: center;
  padding: 2rem 1.5rem;
  position: relative;
}

.tdk-step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  box-shadow: 0 4px 15px rgba(102,126,234,0.4);
}

.tdk-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.tdk-step p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---------- Problem/Solution Split ---------- */
.tdk-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.tdk-split-reverse { direction: rtl; }
.tdk-split-reverse > * { direction: ltr; }

.tdk-split-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.tdk-split-text p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.tdk-problem-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tdk-problem-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.tdk-problem-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.tdk-problem-icon.red   { background: rgba(239,68,68,0.12); }
.tdk-problem-icon.amber { background: rgba(245,158,11,0.12); }
.tdk-problem-icon.green { background: rgba(16,185,129,0.12); }
.tdk-problem-icon.blue  { background: rgba(59,130,246,0.12); }

.tdk-problem-list h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--text-primary);
}

.tdk-problem-list p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.55;
}

/* ---------- Screenshot / App Preview ---------- */
.tdk-app-preview {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--surface-border);
}

.tdk-app-preview img {
  width: 100%;
  display: block;
}

.tdk-browser-chrome {
  background: #f1f5f9;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--surface-border);
}

.tdk-browser-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.tdk-browser-dot:nth-child(1) { background: #ef4444; }
.tdk-browser-dot:nth-child(2) { background: #f59e0b; }
.tdk-browser-dot:nth-child(3) { background: #10b981; }

.tdk-browser-bar {
  flex: 1;
  background: #fff;
  border-radius: 4px;
  height: 22px;
  margin-left: 0.5rem;
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  font-size: 0.7rem;
  color: #94a3b8;
}

/* ---------- Testimonials ---------- */
.tdk-reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.tdk-review-card {
  background: var(--surface-white);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: box-shadow 0.3s;
}

.tdk-review-card:hover {
  box-shadow: var(--shadow-md);
}

.tdk-stars {
  color: var(--brand-amber);
  font-size: 1rem;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.tdk-review-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  font-style: italic;
}

.tdk-reviewer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tdk-reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.tdk-reviewer-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.tdk-reviewer-store {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- FAQ Accordion ---------- */
.tdk-faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tdk-faq-item {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-white);
}

.tdk-faq-item summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: background 0.2s;
}

.tdk-faq-item summary::-webkit-details-marker { display: none; }

.tdk-faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--brand-purple-start);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.tdk-faq-item[open] summary::after {
  transform: rotate(45deg);
}

.tdk-faq-item summary:hover {
  background: var(--surface-light);
}

.tdk-faq-body {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid var(--surface-border);
}

/* ---------- Pricing Cards ---------- */
.tdk-pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.tdk-pricing-card {
  background: var(--surface-white);
  border: 2px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  transition: all 0.3s;
}

.tdk-pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tdk-pricing-card.popular {
  border-color: var(--brand-purple-start);
  box-shadow: 0 0 0 4px rgba(102,126,234,0.1);
}

.tdk-pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.3rem 1rem;
  border-radius: 100px;
  white-space: nowrap;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tdk-pricing-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.tdk-pricing-price {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

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

.tdk-pricing-annual {
  font-size: 0.8rem;
  color: var(--brand-green-start);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.tdk-pricing-divider {
  border: none;
  border-top: 1px solid var(--surface-border);
  margin: 1.25rem 0;
}

.tdk-pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.tdk-pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.tdk-pricing-features li::before {
  content: '✓';
  color: var(--brand-green-start);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.tdk-pricing-trial {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.75rem;
}

/* ---------- CTA Banner ---------- */
.tdk-cta-banner {
  background: var(--gradient-brand);
  color: #fff;
  padding: 5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.tdk-cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.tdk-cta-banner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.tdk-cta-banner p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.tdk-cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.tdk-footer {
  background: var(--dark-900);
  color: rgba(255,255,255,0.7);
  padding: 4rem 2rem 2rem;
}

.tdk-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

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

.tdk-footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  margin-top: 0.75rem;
  max-width: 280px;
}

.tdk-footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.tdk-footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tdk-footer-col a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.tdk-footer-col a:hover { color: #fff; }

.tdk-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.tdk-footer-bottom a {
  color: rgba(255,255,255,0.4);
  text-decoration: none;
}

.tdk-footer-bottom a:hover { color: rgba(255,255,255,0.8); }

/* ---------- Alert / Notice Boxes ---------- */
.tdk-alert {
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.tdk-alert-info  { background: rgba(59,130,246,0.08); border-left: 3px solid var(--brand-blue); color: #1e40af; }
.tdk-alert-warn  { background: rgba(245,158,11,0.08); border-left: 3px solid var(--brand-amber); color: #92400e; }
.tdk-alert-success { background: rgba(16,185,129,0.08); border-left: 3px solid var(--brand-green-start); color: #065f46; }
.tdk-alert-danger  { background: rgba(239,68,68,0.08); border-left: 3px solid #ef4444; color: #991b1b; }

/* ---------- Docs / Content Pages ---------- */
.tdk-docs-layout {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
  align-items: start;
}

.tdk-docs-sidebar {
  position: sticky;
  top: 80px;
}

.tdk-docs-sidebar h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
}

.tdk-docs-sidebar h4:first-child { margin-top: 0; }

.tdk-docs-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tdk-docs-sidebar li a {
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  border-left: 2px solid transparent;
}

.tdk-docs-sidebar li a:hover,
.tdk-docs-sidebar li a.active {
  color: var(--brand-purple-start);
  background: rgba(102,126,234,0.06);
  border-left-color: var(--brand-purple-start);
}

.tdk-docs-content h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.tdk-docs-content h2 { font-size: 1.4rem; margin-top: 2.5rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--surface-border); }
.tdk-docs-content h3 { font-size: 1.1rem; margin-top: 1.75rem; margin-bottom: 0.75rem; }
.tdk-docs-content p  { color: var(--text-secondary); line-height: 1.8; margin-bottom: 1rem; }
.tdk-docs-content ul, .tdk-docs-content ol { color: var(--text-secondary); line-height: 1.8; padding-left: 1.5rem; margin-bottom: 1rem; }
.tdk-docs-content li { margin-bottom: 0.4rem; }
.tdk-docs-content code { background: var(--surface-light); border: 1px solid var(--surface-border); border-radius: 4px; padding: 0.15rem 0.4rem; font-size: 0.85em; color: var(--brand-purple-end); }
.tdk-docs-content pre { background: var(--dark-800); color: #e2e8f0; border-radius: var(--radius-sm); padding: 1.25rem; overflow-x: auto; margin-bottom: 1.5rem; }
.tdk-docs-content pre code { background: none; border: none; padding: 0; color: inherit; }

/* ---------- Page Hero (inner pages) ---------- */
.tdk-page-hero {
  background: var(--gradient-hero);
  color: #fff;
  padding: 4rem 2rem 3.5rem;
  text-align: center;
}

.tdk-page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.75rem;
}

.tdk-page-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Tab Feature Showcase ---------- */
.tdk-tab-showcase {
  background: var(--surface-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--surface-border);
}

.tdk-tab-nav {
  display: flex;
  background: var(--surface-white);
  border-bottom: 1px solid var(--surface-border);
  overflow-x: auto;
  scrollbar-width: none;
}

.tdk-tab-nav::-webkit-scrollbar { display: none; }

.tdk-tab-btn {
  padding: 1rem 1.5rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-family: 'Poppins', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.tdk-tab-btn:hover { color: var(--text-primary); }

.tdk-tab-btn.active {
  color: var(--brand-purple-start);
  border-bottom-color: var(--brand-purple-start);
  background: var(--surface-light);
}

.tdk-tab-panel {
  display: none;
  padding: 2.5rem;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.tdk-tab-panel.active {
  display: grid;
}

.tdk-tab-panel h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.tdk-tab-panel p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.tdk-tab-panel ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tdk-tab-panel ul li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.tdk-tab-panel ul li::before {
  content: '✓';
  color: var(--brand-green-start);
  font-weight: 700;
  flex-shrink: 0;
}

.tdk-tab-screenshot {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  width: 100%;
  display: block;
  border: 1px solid var(--surface-border);
}

/* ---------- Troubleshooting Steps ---------- */
.tdk-steps-numbered {
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.tdk-step-card {
  display: flex;
  gap: 1.5rem;
  background: var(--surface-white);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  counter-increment: step-counter;
  align-items: flex-start;
}

.tdk-step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tdk-step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.tdk-step-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ---------- Breadcrumb ---------- */
.tdk-breadcrumb {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 1rem;
}

.tdk-breadcrumb a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
}

.tdk-breadcrumb a:hover { color: #fff; }
.tdk-breadcrumb span { margin: 0 0.4rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .tdk-footer-grid { grid-template-columns: 1fr 1fr; }
  .tdk-docs-layout { grid-template-columns: 1fr; }
  .tdk-docs-sidebar { position: static; }
}

@media (max-width: 768px) {
  .tdk-hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .tdk-hero { padding: 4rem 1.5rem 3rem; text-align: center; }
  .tdk-hero-actions { justify-content: center; }
  .tdk-hero-trust { justify-content: center; }
  .tdk-hero-visual { order: -1; }

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

  .tdk-split { grid-template-columns: 1fr; gap: 2rem; }
  .tdk-split-reverse { direction: ltr; }

  .tdk-tab-panel.active { grid-template-columns: 1fr; }
  .tdk-tab-panel { padding: 1.5rem; }

  .tdk-footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .tdk-footer-brand { grid-column: 1 / -1; }

  .tdk-nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(15, 23, 42, 0.98);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 0.5rem 1rem 1rem;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  }
  .tdk-nav-links.open {
    display: flex;
  }
  .tdk-nav-links li {
    width: 100%;
  }
  .tdk-nav-links a {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border-radius: 8px;
  }
  .tdk-nav-cta {
    margin-top: 0.5rem;
    text-align: center;
    display: block !important;
  }
  .tdk-nav-mobile-toggle { display: block; }

  .tdk-pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

  .tdk-step-card { flex-direction: column; }
}

@media (max-width: 480px) {
  .tdk-stats-inner { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .tdk-footer-grid { grid-template-columns: 1fr; }
  .tdk-hero-actions { flex-direction: column; align-items: center; }
  .btn-tdk { width: 100%; justify-content: center; }
}