/* ========================================
   INFINITY NETWORKS - STYLESHEET
   ======================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ========================================
   CSS VARIABLES - THEMES
   ======================================== */

:root {
  /* Light Theme (Default) */
  --bg-primary: #FFFFFF;
  --bg-elevated: #F8F8F8;
  --bg-surface: #F0F0F0;
  --bg-card: #FFFFFF;
  --text-primary: #1C1C1C;
  --text-secondary: #666666;
  --text-disabled: #999999;
  --accent: #1C1C1C;
  --accent-hover: #333333;
  --border: #E0E0E0;
  --shadow: rgba(0, 0, 0, 0.08);
  --shadow-lg: rgba(0, 0, 0, 0.12);

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #1C1C1C;
  --bg-elevated: #252525;
  --bg-surface: #2D2D2D;
  --bg-card: #333333;
  --text-primary: #FFFFFF;
  --text-secondary: #B3B3B3;
  --text-disabled: #666666;
  --accent: #FFA500;
  --accent-hover: #FFB732;
  --border: #404040;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-lg: rgba(0, 0, 0, 0.5);
}

/* ========================================
   RESET & BASE
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

ul,
ol {
  list-style: none;
}

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

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

/* ========================================
   LAYOUT
   ======================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-3xl) 0;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-size-5xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  color: var(--text-secondary);
}

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

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

.section-title p {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--font-size-xl);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex: 1;
  justify-content: flex-end;
}

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

.nav-links a,
.nav-language-link {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  display: block;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width var(--transition-fast);
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-language-link::after {
  display: none;
}

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

.nav-language-link:focus,
.nav-language-link:focus-visible {
  outline: none;
}

.language-selector {
  position: relative;
}

.language-selector select {
  padding: 0.4rem 2rem 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 500;
  appearance: none;
  min-width: 150px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.2);
}

.language-selector::after {
  content: '\25BE';
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

[data-theme="dark"] .language-selector select {
  background-color: var(--bg-card);
}

.nav-language-item {
  display: none;
}

.nav-language-link {
  background: none;
  border: none;
  font: inherit;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0;
  cursor: pointer;
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--bg-card);
  transform: scale(1.05);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-moon,
[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  background-color: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.hero .container {
  position: relative;
}

.hero-content {
  max-width: 700px;
}

.hero h1 {
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xl);
  max-width: 550px;
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
}

[data-theme="dark"] .btn-primary {
  color: #1C1C1C;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow-lg);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border);
}

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

/* ========================================
   APPS SECTION
   ======================================== */

.apps {
  background-color: var(--bg-elevated);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.app-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 20px var(--shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.app-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px var(--shadow-lg);
}

.app-screenshots {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-lg) var(--space-lg) 0;
  background-color: var(--bg-surface);
  justify-content: center;
  align-items: flex-start;
  min-height: 320px;
  overflow: hidden;
}

.app-screenshots img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: top center;
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  box-shadow: 0 12px 30px var(--shadow-lg);
}

.app-info {
  padding: var(--space-lg);
}

.app-info h3 {
  margin-bottom: var(--space-xs);
}

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

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
}

[data-theme="dark"] .tag.tag-accent {
  background-color: rgba(255, 165, 0, 0.15);
  color: var(--accent);
}

.tag-accent {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
}

.apps-carousel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: 0 var(--space-xl);
}

.apps-carousel-viewport {
  overflow: hidden;
  width: 100%;
}

.apps-carousel-track {
  display: flex;
  column-gap: 0;
  transition: transform var(--transition-slow);
  will-change: transform;
}

.carousel-btn {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background-color: var(--bg-card);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
}

.carousel-btn.prev {
  left: var(--space-sm);
}

.carousel-btn.next {
  right: var(--space-sm);
}

.carousel-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-50%) scale(1.05);
}

.carousel-btn svg {
  width: 24px;
  height: 24px;
}

.carousel-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: var(--space-sm);
}

.carousel-dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background-color: transparent;
  padding: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.carousel-dots button.active {
  background-color: var(--accent);
  border-color: var(--accent);
  transform: scale(1.1);
}

.app-cta {
  margin-top: var(--space-md);
}

.app-cta .play-badge {
  height: 56px;
  width: auto;
  filter: drop-shadow(0 6px 18px var(--shadow));
}

/* ========================================
   SERVICES SECTION
   ======================================== */

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

.service-card {
  background-color: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast), box-shadow var(--transition-base);
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px var(--shadow);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  color: var(--accent);
}

.service-icon svg {
  width: 28px;
  height: 28px;
}

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

/* ========================================
   CONTACT SECTION
   ======================================== */

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

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: var(--space-md);
}

.contact-info>p {
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-lg);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

.contact-item svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
}

.contact-form {
  background-color: var(--bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px var(--shadow);
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

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

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 165, 0, 0.1);
}

[data-theme="light"] .form-group input:focus,
[data-theme="light"] .form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(28, 28, 28, 0.1);
}

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

.contact-form .btn {
  width: 100%;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  gap: var(--space-md);
}

.footer-content .footer-links {
  justify-self: center;
}

.footer-content .footer-social {
  justify-self: end;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
}

.footer-logo img {
  height: 32px;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--accent);
  color: #FFFFFF;
}

[data-theme="dark"] .footer-social a:hover {
  color: #1C1C1C;
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 992px) {
  h1 {
    font-size: var(--font-size-4xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

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

  .apps-carousel {
    padding: 0 var(--space-lg);
  }
}

@media (max-width: 768px) {
  .header .container {
    flex-wrap: nowrap;
    height: 72px;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }

  .logo {
    flex-shrink: 0;
  }

  .nav {
    flex-wrap: nowrap;
    gap: var(--space-sm);
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-md);
    border-bottom: 1px solid var(--border);
    gap: var(--space-sm);
    z-index: 999;
  }

  .nav-language-item {
    list-style: none;
    display: block;
    padding-top: 0;
  }

  .nav-language-link {
    width: 100%;
    text-align: left;
    padding: var(--space-sm);
  }

  .language-selector {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    border: 0;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    padding: var(--space-sm);
  }

  .theme-toggle {
    margin-left: auto;
  }

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

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .hero p {
    font-size: var(--font-size-lg);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .apps-grid {
    grid-template-columns: 1fr;
  }

  .apps-carousel {
    padding: 0;
  }

  .apps-carousel-viewport {
    width: 100vw;
    margin-left: calc(-50vw + 50%);
  }

  .carousel-btn {
    display: none;
  }

  .carousel-dots {
    margin-top: var(--space-md);
  }

  .app-card {
    min-height: auto;
    border-radius: 0;
  }

  .app-screenshots {
    flex-direction: column;
    align-items: flex-start;
    min-height: 220px;
    padding: var(--space-md) var(--space-md) 0;
  }

  .app-screenshots img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    object-position: top center;
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }

  .contact-content {
    gap: var(--space-xl);
  }

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

@media (max-width: 480px) {
  section {
    padding: var(--space-2xl) 0;
  }

  .hero h1 {
    font-size: var(--font-size-2xl);
  }

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

  .services-grid {
    grid-template-columns: 1fr;
  }
}