@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

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

/* Dark theme (default) */
:root,
[data-theme="dark"] {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #e8e8e8;
  --text-secondary: #8a8a9a;
  --text-muted: #5a5a6a;
  --accent: #7c6ff7;
  --accent-bright: #a78bfa;
  --accent-glow: rgba(124, 111, 247, 0.3);
  --cyan: #22d3ee;
  --cyan-glow: rgba(34, 211, 238, 0.2);
  --green: #34d399;
  --gradient: linear-gradient(135deg, #7c6ff7, #22d3ee);
  --grid-color: rgba(124, 111, 247, 0.03);
  --orb-color: rgba(124, 111, 247, 0.08);
  --captcha-bg: #12121a;
  --captcha-text-r: 150;
  --captcha-text-g: 140;
  --captcha-text-b: 180;
}

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f5f5f8;
  --bg-secondary: #ffffff;
  --bg-card: rgba(0, 0, 0, 0.02);
  --bg-card-hover: rgba(0, 0, 0, 0.05);
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);
  --text-primary: #1a1a2e;
  --text-secondary: #555570;
  --text-muted: #888898;
  --accent: #6c5ce7;
  --accent-bright: #7c6ff7;
  --accent-glow: rgba(108, 92, 231, 0.2);
  --cyan: #0891b2;
  --cyan-glow: rgba(8, 145, 178, 0.15);
  --green: #059669;
  --gradient: linear-gradient(135deg, #6c5ce7, #0891b2);
  --grid-color: rgba(108, 92, 231, 0.04);
  --orb-color: rgba(108, 92, 231, 0.06);
  --captcha-bg: #f0f0f3;
  --captcha-text-r: 40;
  --captcha-text-g: 40;
  --captcha-text-b: 80;
}

body {
  font-family: 'Space Grotesk', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated grid background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* Gradient orbs */
body::after {
  content: "";
  position: fixed;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--orb-color), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Language bar */
.lang-bar {
  position: fixed;
  top: 16px;
  right: 20px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  backdrop-filter: blur(10px);
}

.theme-btn:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
  box-shadow: 0 0 12px var(--accent-glow);
}

.lang-bar select {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  cursor: pointer;
  outline: none;
  backdrop-filter: blur(10px);
  transition: border-color 0.2s;
}

.lang-bar select:hover {
  border-color: var(--accent);
}

/* Pages */
.page {
  display: none;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 50px 20px 24px;
  position: relative;
  z-index: 1;
  display: none;
}

.page.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  animation: fadeIn 0.4s ease;
}

#page2.active, #page3.active {
  justify-content: flex-start;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-inner {
  max-width: 640px;
  margin: 0 auto;
}

/* Back button */
.btn-back {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-secondary);
  margin-bottom: 28px;
  padding: 6px 14px;
  transition: all 0.2s;
}

.btn-back:hover {
  color: var(--accent-bright);
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Logo */
.logo {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 6px;
  margin-bottom: 6px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

/* Features */
.features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  transition: all 0.3s;
}

.feature:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.feature h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.feature p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Primary button */
.btn-primary {
  display: block;
  width: 200px;
  margin: 0 auto;
  padding: 12px 0;
  background: var(--gradient);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(124, 111, 247, 0.5);
  transform: translateY(-1px);
}

.dev-link {
  display: block;
  text-align: center;
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 12px;
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  transition: color 0.2s;
}

.dev-link:hover {
  color: var(--accent-bright);
}

/* Page 2 */
#page2 h2 {
  text-align: center;
  font-size: 24px;
  margin-bottom: 40px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.method {
  margin-bottom: 28px;
}

.method h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.method a {
  color: var(--cyan);
  text-decoration: none;
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  margin-left: 16px;
  transition: all 0.2s;
}

.method a:hover {
  color: var(--accent-bright);
  text-shadow: 0 0 8px var(--cyan-glow);
}

/* Tip */
.tip {
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}

/* Platform tabs */
.platform-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tab {
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
  color: var(--text-secondary);
  background: transparent;
}

.tab.active {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.tab:hover:not(.active) {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* Template cards */
.template-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.template-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  transition: all 0.3s;
}

.template-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: 0 0 24px rgba(124, 111, 247, 0.06);
}

.template-info h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.template-info p {
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

.btn-outline {
  padding: 8px 22px;
  border: 1px solid var(--border-hover);
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
  box-shadow: 0 0 16px var(--accent-glow);
}

/* =============================================
   App Store-style Grid & Cards
   ============================================= */

.store-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.store-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  cursor: pointer;
}

.store-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.store-icon {
  width: 64px;
  height: 64px;
  min-width: 64px;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

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

.store-icon-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.store-card-body {
  flex: 1;
  min-width: 0;
}

.store-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.store-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 6px;
}

.store-meta {
  display: flex;
  gap: 8px;
  align-items: center;
}

.store-price {
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-bright);
  font-weight: 600;
}

.store-price.free {
  color: var(--green);
}

/* =============================================
   App Detail Page (Play Store / App Store style)
   ============================================= */

.app-header {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.app-icon-lg {
  width: 88px;
  height: 88px;
  min-width: 88px;
  border-radius: 20px;
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.app-icon-lg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-icon-lg span {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.app-header-info {
  flex: 1;
  min-width: 0;
}

.app-name {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.app-developer {
  font-size: 12px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 8px;
}

.app-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.app-tag {
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.app-tag.price {
  color: var(--accent-bright);
  border-color: rgba(124, 111, 247, 0.3);
  background: rgba(124, 111, 247, 0.1);
}

.app-tag.free {
  color: var(--green);
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.1);
}

.app-install-btn {
  width: 100%;
  margin-bottom: 24px;
}

/* Screenshots horizontal scroll */
.app-screenshots {
  margin-bottom: 24px;
}

.screenshots-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.screenshots-scroll::-webkit-scrollbar {
  height: 4px;
}

.screenshots-scroll::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 2px;
}

.screenshot {
  height: 220px;
  width: auto;
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  scroll-snap-align: start;
  flex-shrink: 0;
  transition: transform 0.2s;
}

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

/* About section */
.app-section {
  margin-bottom: 24px;
}

.app-section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.app-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-wrap;
}

/* Info grid */
.app-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.app-info-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}

.info-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.info-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* Image overlay (lightbox) */
.img-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-overlay img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 8px;
}

.img-overlay button {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
}

/* Captcha Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 28px;
  width: 360px;
  max-width: 90vw;
  position: relative;
  animation: fadeIn 0.2s ease;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-muted);
  transition: color 0.2s;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-title {
  font-size: 15px;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-align: center;
}

.captcha-body {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

#captchaCanvas {
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.captcha-refresh {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 22px;
  cursor: pointer;
  padding: 8px 10px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.captcha-refresh:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
}

.captcha-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.captcha-input-row input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  outline: none;
  text-align: center;
  letter-spacing: 4px;
  transition: border-color 0.2s;
}

.captcha-input-row input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.btn-captcha-submit {
  padding: 10px 20px;
  background: var(--gradient);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.btn-captcha-submit:hover {
  box-shadow: 0 4px 16px var(--accent-glow);
}

.captcha-hint {
  text-align: center;
  font-size: 13px;
  min-height: 18px;
  color: #ef4444;
}

/* PC: wider layout */
@media (min-width: 768px) {
  .page {
    padding: 60px 40px 40px;
  }

  .page-inner {
    max-width: 720px;
  }

  .logo {
    font-size: 44px;
    letter-spacing: 8px;
  }

  .subtitle {
    font-size: 15px;
  }

  .feature h3 {
    font-size: 15px;
  }

  .feature p {
    font-size: 13px;
  }

  .btn-primary {
    width: 240px;
    font-size: 16px;
  }

  .platform-tabs {
    gap: 10px;
  }

  .tab {
    padding: 10px 22px;
  }

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

  .app-icon-lg {
    width: 100px;
    height: 100px;
    min-width: 100px;
  }

  .screenshot {
    height: 280px;
  }
}

/* Large screens */
@media (min-width: 1200px) {
  .page-inner {
    max-width: 800px;
  }

  .logo {
    font-size: 48px;
  }
}