/* ============================================
   Techandcare - Design System
   Based on TYC App Design System
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
  /* Colors - Light Mode */
  --color-primary: #1AB394;
  --color-primary-light: #4DCAAD;
  --color-primary-dark: #158F76;

  --color-background: #F7F8FA;
  --color-surface: #FFFFFF;
  --color-text: #1A1D26;
  --color-text-dim: #4A4F5C;
  --color-text-light: #7C8290;
  --color-separator: #E2E4E9;
  --color-border: #B0B5C0;

  --color-secondary: #2D4E94;
  --color-accent: #FFB01A;
  --color-success: #38C172;
  --color-error: #E53E3E;

  /* Spacing */
  --space-xxxs: 2px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-xxxl: 64px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Typography */
  --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --font-size-xxs: 12px;
  --font-size-xs: 14px;
  --font-size-sm: 16px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-xxl: 36px;
  --font-size-hero: 48px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: var(--space-lg);
}

/* Dark Mode */
[data-theme="dark"] {
  --color-background: #141722;
  --color-surface: #1E2130;
  --color-text: #E2E4E9;
  --color-text-dim: #7C8290;
  --color-text-light: #4A4F5C;
  --color-separator: #2E3340;
  --color-border: #4A4F5C;
  --color-primary: #4DCAAD;
}

/* ============================================
   Reset & Base
   ============================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 { font-size: var(--font-size-hero); }
h2 { font-size: var(--font-size-xxl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-md); }
h6 { font-size: var(--font-size-sm); }

p {
  margin-bottom: var(--space-md);
}

.text-dim {
  color: var(--color-text-dim);
}

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

/* ============================================
   Layout
   ============================================ */

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

.section {
  padding: var(--space-xxxl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--color-text-dim);
  font-size: var(--font-size-md);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Header / Navigation
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(247, 248, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-separator);
  transition: background-color var(--transition-normal);
}

[data-theme="dark"] .header {
  background-color: rgba(20, 23, 34, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.logo img {
  height: 52px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-link {
  color: var(--color-text-dim);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.lang-toggle {
  display: flex;
  background-color: var(--color-separator);
  border-radius: var(--radius-full);
  padding: var(--space-xxxs);
}

.lang-btn {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dim);
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-separator);
  color: var(--color-text);
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background-color: rgba(26, 179, 148, 0.1);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-lg);
  font-size: clamp(36px, 5vw, 56px);
}

.hero h1 span {
  color: var(--color-primary);
}

.hero-description {
  font-size: var(--font-size-md);
  color: var(--color-text-dim);
  margin-bottom: var(--space-xl);
  line-height: var(--line-height-relaxed);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  max-width: 300px;
  filter: drop-shadow(var(--shadow-xl));
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-store {
  background-color: var(--color-text);
  color: var(--color-background);
  padding: var(--space-sm) var(--space-lg);
  position: relative;
}

[data-theme="dark"] .btn-store {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-store:hover {
  opacity: 0.9;
  color: var(--color-background);
}

.btn-store-content {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-store-icon {
  font-size: 24px;
}

.btn-store-text {
  text-align: left;
}

.btn-store-text small {
  display: block;
  font-size: var(--font-size-xxs);
  font-weight: var(--font-weight-normal);
  opacity: 0.8;
}

.btn-store-text span {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.coming-soon-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background-color: var(--color-accent);
  color: var(--color-text);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ============================================
   Features Section
   ============================================ */

.features {
  background-color: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-xl);
  background-color: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-separator);
  transition: all var(--transition-normal);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: 28px;
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--color-text-dim);
  margin-bottom: 0;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works {
  background-color: var(--color-background);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  counter-reset: step;
}

.step {
  text-align: center;
  position: relative;
}

.step::before {
  content: counter(step);
  counter-increment: step;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-md);
}

.step h4 {
  margin-bottom: var(--space-xs);
}

.step p {
  color: var(--color-text-dim);
  margin-bottom: 0;
}

/* ============================================
   Contact Section
   ============================================ */

.contact {
  background-color: var(--color-surface);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
  align-items: start;
}

.contact-info h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
}

.contact-info p {
  color: var(--color-text-dim);
  margin-bottom: var(--space-lg);
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-background);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
}

.contact-email svg {
  color: var(--color-primary);
}

.contact-form {
  background-color: var(--color-background);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-separator);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dim);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-separator);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  margin-top: var(--space-sm);
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background-color: var(--color-text);
  color: var(--color-background);
  padding: var(--space-xxl) 0 var(--space-lg);
}

[data-theme="dark"] .footer {
  background-color: #0D0F14;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-background);
  font-weight: var(--font-weight-bold);
}

.footer-logo img {
  height: 32px;
  filter: brightness(0) invert(1);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-xs);
}

.footer-link:hover {
  color: white;
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Legal Pages
   ============================================ */

.legal-page {
  padding-top: 120px;
  padding-bottom: var(--space-xxxl);
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: var(--font-size-xxl);
  margin-bottom: var(--space-lg);
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.legal-content p {
  color: var(--color-text-dim);
  margin-bottom: var(--space-md);
}

.legal-content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.legal-content li {
  color: var(--color-text-dim);
  margin-bottom: var(--space-xs);
  list-style: disc;
}

.legal-content .last-updated {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    order: -1;
    margin-bottom: var(--space-xl);
  }

  .phone-mockup {
    max-width: 250px;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-md);
  }

  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .section {
    padding: var(--space-xxl) 0;
  }

  h1 {
    font-size: var(--font-size-xxl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: var(--space-xxl);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-store {
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .features-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .lang-toggle {
    display: none;
  }

  .phone-mockup {
    max-width: 200px;
  }
}

/* ============================================
   Mobile Menu
   ============================================ */

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-background);
  padding: var(--space-lg);
  z-index: 999;
}

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

.mobile-menu .nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu .nav-link {
  font-size: var(--font-size-lg);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-separator);
}

.mobile-menu .lang-toggle {
  display: flex;
  margin-top: var(--space-lg);
  justify-content: center;
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Scroll animations */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}