/* ============================================
   PAGE LOAD ANIMATIONS
   ============================================ */

body {
  opacity: 0;
  visibility: hidden;
  background-color: var(--bg-primary);
}

body.loaded {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

header {
  animation: slideInDown 0.6s ease forwards;
  opacity: 0;
}

body.loaded header {
  opacity: 1;
}

.hero {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.2s;
}

.hero h1 {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
  animation-delay: 0.4s;
}

.hero p {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
  animation-delay: 0.5s;
}

.hero-btns {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
  animation-delay: 0.6s;
}

.app-preview-container {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.7s;
}

.section-padding {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

#why-appvault {
  animation-delay: 0.3s;
}

#features {
  animation-delay: 0.5s;
}

#personalization {
  animation-delay: 0.7s;
}

#download {
  animation-delay: 0.9s;
}

.benefit-item {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.ui-option {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.ui-option:nth-child(1) {
  animation-delay: 0.8s;
}

.ui-option:nth-child(2) {
  animation-delay: 0.9s;
}

.ui-option:nth-child(3) {
  animation-delay: 1.0s;
}

.cta-section {
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 1.1s;
}

footer {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
  animation-delay: 1.3s;
}

.footer-col {
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

.footer-col:nth-child(1) {
  animation-delay: 1.4s;
}

.footer-col:nth-child(2) {
  animation-delay: 1.5s;
}

.footer-col:nth-child(3) {
  animation-delay: 1.6s;
}

.footer-col:nth-child(4) {
  animation-delay: 1.7s;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  body {
    opacity: 1;
    visibility: visible;
  }
}

:root {
  --bg-primary: #121212;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #242424;
  
  --accent-primary: #fb5252;
  --accent-hover: #e04545;
  --accent-soft: rgba(251, 82, 82, 0.1);
  --accent-soft-2: rgba(251, 82, 82, 0.2);
  --accent-soft-3: rgba(251, 82, 82, 0.08);
  --accent-border: rgba(251, 82, 82, 0.3);
  
  --tertiary-primary: #5fdbbc;
  --tertiary-soft: rgba(95, 219, 188, 0.1);
  
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: rgba(255, 255, 255, 0.2);
  
  --border-light: rgba(255, 255, 255, 0.1);
  --border-medium: rgba(255, 255, 255, 0.3);
  --border-strong: rgba(255, 255, 255, 0.5);
  
  --card-bg: rgba(255, 255, 255, 0.05);
  --card-bg-light: rgba(255, 255, 255, 0.04);
  --card-bg-lighter: rgba(255, 255, 255, 0.03);
  --card-bg-accent: rgba(251, 82, 82, 0.1);
  --card-bg-solid: rgba(255, 255, 255, 0.08);
  
  --glass-bg: rgba(20, 20, 20, 0.8);
  --glass-header: rgba(18, 18, 18, 0.8);
  --glass-panel: rgba(255, 255, 255, 0.04);
  --glass-section: rgba(255, 255, 255, 0.02);
  --input-bg: rgba(29, 29, 29, 0.8);
  
  --bg-selection: rgba(221, 136, 136, 0.735);
  
  --shadow-large: 0 40px 100px rgba(0, 0, 0, 0.6);
  --shadow-medium: 0 20px 40px rgba(0, 0, 0, 0.4);
  
  --shape-border: #666666;
  --shape-border-light: #ffffff;
  
  --status-success: #4ade80;
  
  --btn-white-bg: #ffffff;
  --btn-white-hover: #dfdfdf;
  --btn-white-text: #000000;
  
  --font-family: "Manrope", sans-serif;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --x: 50%;
  --y: 50%;
}

html.light {
  color-scheme: light;

  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e8e8e8;
  
  --accent-primary: #fb5252;
  --accent-hover: #e04545;
  --accent-soft: rgba(251, 82, 82, 0.1);
  --accent-soft-2: rgba(251, 82, 82, 0.15);
  --accent-soft-3: rgba(251, 82, 82, 0.05);
  --accent-border: rgba(251, 82, 82, 0.3);
  
  --tertiary-primary: #5fdbbc;
  --tertiary-soft: rgba(95, 219, 188, 0.15);
  
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-tertiary: rgba(0, 0, 0, 0.3);
  
  --border-light: rgba(0, 0, 0, 0.1);
  --border-medium: rgba(0, 0, 0, 0.2);
  --border-strong: rgba(0, 0, 0, 0.4);
  
  --card-bg: rgba(0, 0, 0, 0.05);
  --card-bg-light: rgba(0, 0, 0, 0.04);
  --card-bg-lighter: rgba(0, 0, 0, 0.03);
  --card-bg-accent: rgba(251, 82, 82, 0.08);
  --card-bg-solid: rgba(0, 0, 0, 0.06);
  
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-header: rgba(255, 255, 255, 0.85);
  --glass-panel: rgba(255, 255, 255, 0.6);
  --glass-section: rgba(245, 245, 245, 0.8);
  --input-bg: rgba(245, 245, 245, 0.9);
  
  --bg-selection: rgba(251, 82, 82, 0.3);
  
  --shadow-large: 0 40px 100px rgba(0, 0, 0, 0.15);
  --shadow-medium: 0 20px 40px rgba(0, 0, 0, 0.1);
  
  --shape-border: #999999;
  --shape-border-light: #333333;
  
  --status-success: #22c55e;
  
  --btn-white-bg: #1a1a1a;
  --btn-white-hover: #333333;
  --btn-white-text: #ffffff;
}

/* ============================================
   VIEW TRANSITION ANIMATIONS
   ============================================ */
::view-transition-old(root) {
  animation: fade-out 0.2s ease forwards;
}

::view-transition-new(root) {
  animation: reveal-in 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes reveal-in {
  from {
    clip-path: circle(0% at var(--x) var(--y));
  }
  to {
    clip-path: circle(150% at var(--x) var(--y));
  }
}

@keyframes reveal-out {
  from {
    clip-path: circle(150% at var(--x) var(--y));
  }
  to {
    clip-path: circle(0% at var(--x) var(--y));
  }
}

/* ============================================
   BASE STYLE
   ============================================ */
::selection {
  color: var(--bg-primary);
  background-color: var(--bg-selection);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--card-bg);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   COMPONENTS
   ============================================ */
.glass-panel {
  background: var(--glass-panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.icon {
  display: inline-block;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
  flex-shrink: 0;
  vertical-align: middle;
}

.icon-18 {
  width: 18px;
  height: 18px;
}

.icon-20 {
  width: 20px;
  height: 20px;
}

.icon-24 {
  width: 24px;
  height: 24px;
}

.icon-32 {
  width: 32px;
  height: 32px;
}

.icon-48 {
  width: 48px;
  height: 48px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
  user-select: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #fff;
  border: none;
}

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

.btn-secondary {
  background-color: var(--card-bg);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}

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

.btn-white {
  background-color: var(--btn-white-bg);
  color: var(--btn-white-text);
  border: none;
}

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

/* ============================================
   HEADER
   ============================================ */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 20px 0;
  background: var(--glass-header);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  flex-shrink: 0;
  user-select: none;
}

.logo-box {
  display: flex;
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  white-space: nowrap;
}

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

.nav-download-btn {
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: color var(--transition-normal);
}
.nav-download-btn:hover {
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

/* ============================================
   LANG SWITCHER
   ============================================ */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--input-bg);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: 0.875rem;
  cursor: pointer;
  user-select: none;
  transition: border-color var(--transition-normal);
  position: relative;
  flex-shrink: 0;
}

.lang-switcher:hover {
  border-color: var(--border-medium);
}

.lang-switcher.active {
  border-color: var(--border-medium);
}

.lang-popup {
  position: absolute;
  top: calc(100% + 15px);
  right: 0;
  min-width: 130px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  will-change: transform;
  backface-visibility: hidden;
  z-index: 1000;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-medium);
  pointer-events: none;
}

.lang-popup.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-primary);
  font-size: 0.875rem;
}
.lang-option:not(:last-child) {
  margin-bottom: 8px;
}

.lang-option:hover {
  background: var(--card-bg);
}

.lang-option.active {
  background: var(--accent-soft);
  color: var(--accent-primary);
}

.lang-flag {
  width: 24px;
  height: 16px;
  object-fit: cover;
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
}

/* ============================================
   THEME SWITCHER
   ============================================ */
.theme-switcher {
  display: flex;
  align-items: center;
  padding: 6px;
  background: var(--input-bg);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color var(--transition-normal);
  position: relative;
  flex-shrink: 0;
}

.theme-switcher:hover {
  border-color: var(--border-medium);
}

.theme-switcher input {
  display: none;
}

.theme-switcher-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  position: relative;
}

.theme-switcher-icon .icon {
  position: absolute;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  will-change: transform;
  backface-visibility: hidden;
}

.sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
  will-change: transform;
  backface-visibility: hidden;
}

html.light .moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

html.light .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding: 100px 0 60px;
  text-align: center;
  background: radial-gradient(
    circle at center,
    var(--accent-soft-2) 0%,
    transparent 70%
  );
}

.hero h1 {
  margin-bottom: 24px;
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -1px;
  cursor: default;
}

.hero p {
  max-width: 700px;
  margin: 0 auto 40px;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 80px;
  flex-wrap: wrap;
}

.app-preview-container {
  max-width: 1000px;
  margin: 0 auto;
  box-shadow: var(--shadow-large);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.app-preview-img {
  width: 100%;
  height: auto;
  transition: opacity 0.3s ease;
}

/* ============================================
   GENERAL SECTIONS
   ============================================ */
.section-padding {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 60px;
  text-align: center;
}

.section-title {
  margin-bottom: 3px;
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  cursor: default;
}

.section-title-left {
  text-align: left;
  margin-bottom: 24px;
  cursor: default;
}

.section-subtitle {
  max-width: 760px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.section-description {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.section-description-left {
  margin-bottom: 40px;
}

/* ============================================
   WHY APPVAULT SECTION
   ============================================ */
.why-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.benefit-item {
  margin-bottom: 32px;
}

.benefit-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  cursor: default;
}

.benefit-header .icon {
  color: var(--status-success);
}

.benefit-desc {
  padding-left: 36px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.comparison-card {
  padding: 32px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.comp-title {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: default;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 30px;
}

.icon-grid-after {
  margin-bottom: 20px;
}

.icon-grid-last {
  margin-bottom: 0;
}

.icon-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  background: var(--card-bg-light);
  border-radius: 8px;
}

.shape {
  display: block;
  width: 20px;
  height: 20px;
  opacity: 0.9;
}

.shape-rect {
  width: 18px;
  height: 18px;
  border: 2px solid var(--shape-border);
  border-radius: 3px;
}

.shape-circle {
  width: 20px;
  height: 20px;
  border: 2px solid var(--shape-border);
  border-radius: 50%;
}

.shape.accent {
  border-color: var(--accent-primary);
}

.shape.solid {
  border-color: var(--shape-border-light);
}

.icon-placeholder-accent {
  background: var(--card-bg-accent);
}

.icon-placeholder-solid {
  background: var(--card-bg-solid);
}

.after-section {
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

.group-label {
  margin-bottom: 12px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: default;
}

/* ============================================
   FEATURES BENTO SECTION
   ============================================ */
.features-bento-section {
  background: var(--glass-section);
}

.features-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-bento-card {
  padding: 32px;
  border-radius: 24px;
  transition: transform var(--transition-normal);
  will-change: transform;
  backface-visibility: hidden;
  background: var(--card-bg-light);
}

.feature-bento-card:hover {
  transform: translateY(-3px);
}

.feature-bento-large {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 22px;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent-primary);
}

.feature-icon-accent {
  color: var(--accent-primary);
  background: var(--accent-soft);
}

.feature-icon-tertiary {
  color: var(--tertiary-primary);
  background: var(--tertiary-soft);
}

.feature-bento-card h3 {
  margin-bottom: 14px;
  font-size: 1.375rem;
  font-weight: 700;
  cursor: default;
}

.feature-bento-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ============================================
   PERSONALIZATION SECTION
   ============================================ */
.personalization-section {
  padding-top: 80px;
}

.personalization-desc {
  max-width: 680px;
}

.ui-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.ui-option {
  padding: 12px;
  border-radius: 24px;
}

.ui-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 210px;
  margin-bottom: 20px;
  border-radius: 18px;
  background: var(--card-bg-lighter);
  border: 1px solid transparent;
  color: var(--text-tertiary);
  transition: all var(--transition-normal);
}

.ui-option:hover .ui-preview {
  border: 1px solid var(--accent-border);
  color: var(--accent-primary);
}

.ui-option h3 {
  margin-bottom: 5px;
  font-size: 1rem;
  font-weight: 700;
  cursor: default;
}

.ui-option p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: default;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  padding: 100px 0;
  text-align: center;
  background: linear-gradient(to bottom, transparent, var(--accent-soft-3));
}

.hero-btns-cta {
  margin-top: -20px;
}

.btn-secondary-cta {
  background: var(--card-bg-lighter);
}

.divider {
  height: 1px;
  margin: 80px 0 40px;
  background: var(--border-light);
}

.benefits-bar {
  display: flex;
  justify-content: space-around;
  text-align: center;
  gap: 24px;
  flex-wrap: wrap;
}

.benefit-stat .icon {
  color: var(--text-secondary);
}

.benefit-stat h4 {
  margin-top: 12px;
  font-size: 1rem;
  cursor: default;
}

.benefit-stat p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: default;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  padding: 45px 0;
  border-top: 1px solid var(--border-light);
  transition: border-color var(--transition-normal);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand p {
  max-width: 300px;
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-col h4 {
  margin-bottom: 18px;
  font-size: 1rem;
  cursor: default;
}

.footer-col ul li {
  margin-bottom: 5px;
}

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-col ul li a:hover {
  color: var(--text-primary);
}
.faq-trigger {
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  width: 0;
  transition: color var(--transition-normal);
}
.faq-trigger:hover {
  color: var(--text-primary);
}

.footer-social-col {
  display: flex;
  justify-content: flex-end;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--card-bg);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--transition-normal);
}

.social-icon:hover {
  background: var(--accent-primary);
  color: #fff;
}

.copyright {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* ============================================
   DOWNLOAD MODAL
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-overlay.closing {
  opacity: 0;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  max-width: 680px;
  width: 100%;
  position: relative;
  transform: scale(0.9);
  will-change: transform, opacity;
  backface-visibility: hidden;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.3s ease;
  box-shadow: var(--shadow-large);
}
.modal-container::-webkit-scrollbar {
  width: 0;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
  opacity: 1;
}

.modal-overlay.closing .modal-container {
  transform: scale(0.9) translateY(20px);
  opacity: 0;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--card-bg);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  z-index: 10;
}

.modal-close:hover {
  background: var(--accent-primary);
  color: #fff;
}

.modal-close .icon {
  width: 20px;
  height: 20px;
}

.modal-header {
  padding: 40px 40px 20px;
  text-align: center;
}

.modal-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
  cursor: default;
}

.modal-header p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.modal-content {
  padding: 0 40px 40px;
}

.download-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.download-option {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.download-option:hover {
  background: var(--card-bg-solid);
  border-color: var(--accent-hover);
}

.download-option-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border-radius: 14px;
  margin-bottom: 16px;
  color: var(--accent-primary);
}

.download-option-icon .icon {
  width: 32px;
  height: 32px;
}

.download-option h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.download-option p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.download-option-size {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  padding: 6px 12px;
  background: var(--card-bg-lighter);
  border-radius: 6px;
  align-self: flex-start;
  user-select: none;
}

.modal-divider {
  height: 1px;
  background: var(--border-light);
  margin: 0 0 24px;
}

.github-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.github-download-btn:hover {
  background: var(--card-bg-solid);
  border-color: var(--border-medium);
}

.github-download-btn .icon {
  width: 20px;
  height: 20px;
  color: var(--text-primary);
}

/* ============================================
   MEDIA QUERIES for download modal
   ============================================ */
@media (max-width: 768px) {
  .modal-container {
    max-width: 100%;
    margin: 0;
    border-radius: 16px;
  }
  
  .modal-header {
    padding: 30px 24px 16px;
  }
  
  .modal-header h2 {
    font-size: 1.375rem;
  }
  
  .modal-content {
    padding: 0 24px 30px;
  }
  
  .download-options {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .download-option {
    padding: 20px;
  }
  
  .modal-close {
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 480px) {
  .modal-overlay {
    padding: 16px;
    align-items: center;
  }
  
  .modal-container {
    border-radius: 20px;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .modal-header {
    padding: 24px 20px 12px;
  }
  
  .modal-content {
    padding: 0 20px 24px;
  }
}

/* ============================================
   FAQ MODAL
   ============================================ */
.modal-container-faq {
  max-width: 720px;
}

.modal-content-faq {
  padding: 0 2.5rem 2.5rem;
  max-height: 60vh;
  overflow-y: auto;
  scroll-padding-top: 1rem;
  scroll-padding-bottom: 1rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding: 0.5rem 0;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item:hover {
  border-color: var(--border-medium);
}

.faq-item.active {
  border-color: var(--accent-primary);
  background: var(--card-bg-accent);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-family);
  transition: all var(--transition-fast);
}

.faq-question-icon {
  color: var(--accent-primary);
  flex-shrink: 0;
}

.faq-question-text {
  flex-grow: 1;
}

.faq-question .faq-icon {
  color: var(--text-secondary);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--accent-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-content {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0 1.5rem 1.25rem;
}

.faq-answer-icon {
  color: var(--status-success);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin: 0;
}

.faq-footer {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

.faq-footer p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.faq-contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.875rem 1.5rem;
  background: var(--accent-primary);
  color: #fff;
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.faq-contact-btn:hover {
  background: var(--accent-hover);
}

.faq-contact-btn .icon {
  width: 1.25rem;
  height: 1.25rem;
}

.modal-content-faq::-webkit-scrollbar {
  width: 6px;
}

.modal-content-faq::-webkit-scrollbar-track {
  background: transparent;
  margin: 0.5rem 0;
}

.modal-content-faq::-webkit-scrollbar-thumb {
  background: var(--card-bg);
  border-radius: 3px;
}

.modal-content-faq::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.faq-item {
  opacity: 0;
  animation: fadeInUp 0.4s ease forwards;
}

.faq-item:nth-child(1) { animation-delay: 0.1s; }
.faq-item:nth-child(2) { animation-delay: 0.15s; }
.faq-item:nth-child(3) { animation-delay: 0.2s; }
.faq-item:nth-child(4) { animation-delay: 0.25s; }
.faq-item:nth-child(5) { animation-delay: 0.3s; }
.faq-item:nth-child(6) { animation-delay: 0.35s; }
.faq-item:nth-child(7) { animation-delay: 0.4s; }
.faq-item:nth-child(8) { animation-delay: 0.45s; }
.faq-item:nth-child(9) { animation-delay: 0.5s; }
.faq-item:nth-child(10) { animation-delay: 0.55s; }

/* ============================================
   MEDIA QUERIES for FAQ modal
   ============================================ */
@media (max-width: 768px) {
  .modal-container-faq {
    max-width: 100%;
  }
  
  .modal-content-faq {
    padding: 0 1.5rem 1.875rem;
  }
  .modal-content-faq::-webkit-scrollbar {
    width: 0;
  }
  
  .faq-question {
    padding: 1rem 1.25rem;
    font-size: 0.9375rem;
    gap: 0.625rem;
  }
  
  .faq-answer-content {
    padding: 0 1.25rem 1rem;
    gap: 0.625rem;
  }
  
  .faq-answer p {
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .modal-container-faq {
    max-height: 80vh;
  }

  .modal-content-faq {
    padding: 0 1.25rem 1.5rem;
  }
  
  .faq-question {
    padding: 0.875rem 1rem;
    gap: 0.5rem;
  }
  
  .faq-answer-content {
    padding: 0 1rem 0.875rem;
    gap: 0.5rem;
  }
  
  .faq-footer {
    padding-top: 1.25rem;
  }
  
  .faq-contact-btn {
    width: 100%;
    padding: 0.75rem 1.25rem;
  }
}

/* ============================================
   MEDIA QUERIES
   ============================================ */
@media (max-width: 1024px) {
  .why-layout,
  .features-bento-grid,
  .ui-grid,
  .footer-content {
    grid-template-columns: 1fr;
  }

  .feature-bento-large {
    grid-column: span 1;
  }

  .footer-social-col {
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 2.875rem;
  }
}

@media (max-width: 768px) {
  .header-nav {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: nowrap;
  }

  .nav-links {
    display: none;
  }

  .header-actions {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .lang-popup {
    right: -10px;
    min-width: 130px;
  }

  .lang-switcher {
    padding: 4px 10px;
    flex-shrink: 0;
  }

  .theme-switcher {
    padding: 6px;
    flex-shrink: 0;
  }

  .lang-switcher .icon {
    margin-right: 0;
  }

  .hero {
    padding: 80px 0 50px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .section-title {
    font-size: 1.875rem;
  }

  .section-subtitle,
  .hero p,
  .section-description {
    font-size: 1rem;
  }

  .section-padding,
  .cta-section {
    padding: 70px 0;
  }

  .benefit-desc {
    padding-left: 0;
  }

  .comparison-card {
    padding: 24px;
  }

  .feature-bento-card,
  .ui-option {
    padding: 22px;
  }

  .ui-preview {
    height: 150px;
  }

  .benefits-bar {
    flex-direction: column;
    gap: 30px;
  }
}

@media (max-width: 480px) {
  .header-nav {
    gap: 8px;
    padding: 0 16px;
  }

  .header-actions {
    gap: 8px;
  }

  .theme-switcher {
    padding: 6px;
  }

  .theme-switcher-icon {
    width: 18px;
    height: 18px;
  }

  .lang-switcher {
    padding: 4px 8px;
  }

  .logo-container span {
    font-size: 1.125rem;
  }

  .logo-box {
    width: 28px;
    height: 28px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

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

  .hero-btns {
    width: 100%;
  }
}