@import 'variables.css';

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

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

body {
  font-family: var(--font-family-base);
  font-size: var(--text-base);
  line-height: var(--line-height-normal);
  color: var(--color-neutral-900);
  background-color: var(--color-neutral-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

.card-list {
  padding-left: var(--spacing-lg);
  list-style: disc;
  color: var(--color-neutral-700);
}

.card-list li {
  padding: var(--spacing-xs) 0;
  line-height: var(--line-height-relaxed);
}

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

.section {
  padding: var(--spacing-4xl) 0;
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.justify-between {
  justify-content: space-between;
}

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

.gap-sm {
  gap: var(--spacing-sm);
}
.gap-md {
  gap: var(--spacing-md);
}
.gap-lg {
  gap: var(--spacing-lg);
}
.gap-xl {
  gap: var(--spacing-xl);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--text-5xl);
}
h2 {
  font-size: var(--text-4xl);
}
h3 {
  font-size: var(--text-3xl);
}
h4 {
  font-size: var(--text-2xl);
}
h5 {
  font-size: var(--text-xl);
}
h6 {
  font-size: var(--text-lg);
}

.text-sm {
  font-size: var(--text-sm);
}
.text-lg {
  font-size: var(--text-lg);
}
.text-xl {
  font-size: var(--text-xl);
}
.text-2xl {
  font-size: var(--text-2xl);
}

.text-primary {
  color: var(--color-primary-500);
}
.text-secondary {
  color: var(--color-secondary-500);
}
.text-muted {
  color: var(--color-neutral-600);
}
.text-center {
  text-align: center;
}

.font-semibold {
  font-weight: var(--font-weight-semibold);
}
.font-bold {
  font-weight: var(--font-weight-bold);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: var(--color-neutral-0);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-family-heading);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-500);
}

.nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-700);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary-500);
  background-color: var(--color-primary-50);
}

.nav-link.active {
  color: var(--color-primary-500);
}

/* Language Switcher */
.lang-switch {
  display: flex;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  background-color: var(--color-neutral-100);
  border-radius: var(--radius-full);
}

.lang-switch button {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  color: var(--color-neutral-600);
}

.lang-switch button.active {
  background-color: var(--color-primary-500);
  color: var(--color-neutral-0);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-900);
  border: 2px solid var(--color-neutral-200);
}

.btn-secondary:hover {
  background-color: var(--color-neutral-200);
  border-color: var(--color-neutral-300);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--text-lg);
}

/* Icons */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
}

.icon-sm {
  width: 16px;
  height: 16px;
}
.icon-md {
  width: 24px;
  height: 24px;
}
.icon-lg {
  width: 32px;
  height: 32px;
}
.icon-xl {
  width: 48px;
  height: 48px;
}
.icon-2xl {
  width: 64px;
  height: 64px;
}

/* Cards */
.card {
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

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

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-0);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--spacing-4xl)) var(--container-padding)
    var(--spacing-4xl);
  background: linear-gradient(
    180deg,
    var(--color-primary-50) 0%,
    var(--color-neutral-0) 100%
  );
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.hero-text h1 {
  font-size: var(--text-6xl);
  color: var(--color-primary-700);
  margin-bottom: var(--spacing-lg);
}

.hero-text p {
  font-size: var(--text-xl);
  color: var(--color-neutral-600);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
}

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

.hero-image img {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 300px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Screenshots */
.screenshots {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.screenshot {
  width: 280px;
  height: 560px;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.screenshot:hover {
  transform: scale(1.02);
}

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

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

/* Categories */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.category-card {
  background-color: var(--color-neutral-0);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.category-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-md);
  color: var(--color-neutral-0);
}

.category-name {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
}

/* Comparison Table */
.comparison {
  background-color: var(--color-neutral-50);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
}

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

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-neutral-200);
}

.comparison-table th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
}

.comparison-table th:last-child {
  color: var(--color-primary-500);
}

.comparison-table td:last-child {
  color: var(--color-primary-600);
  font-weight: var(--font-weight-semibold);
}

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

/* Download Section */
.download-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-0);
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  min-width: 200px;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background-color: var(--color-neutral-800);
}

.download-btn span {
  display: block;
  font-size: var(--text-xs);
  opacity: 0.8;
}

.download-btn strong {
  display: block;
  font-size: var(--text-lg);
}

/* Footer */
.footer {
  background-color: var(--color-neutral-900);
  color: var(--color-neutral-100);
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-neutral-0);
  margin-bottom: var(--spacing-md);
}

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

.footer-links a {
  color: var(--color-neutral-400);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary-500);
}

.footer-bottom {
  border-top: 1px solid var(--color-neutral-800);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: var(--color-neutral-500);
}

/* Animation classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-neutral-900);
  transition: all var(--transition-fast);
}