/* ============================================
   JcubHub Books - Design System & Styles
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Primary Colors */
  --primary: #667eea;
  --primary-dark: #5a6fd6;
  --secondary: #764ba2;
  
  /* Accent Colors */
  --accent-pink: #f093fb;
  --accent-coral: #f5576c;
  
  /* Background Colors */
  --bg-dark: #0a0a0a;
  --bg-card: rgba(255, 255, 255, 0.05);
  --bg-input: rgba(255, 255, 255, 0.08);
  --bg-input-focus: rgba(255, 255, 255, 0.12);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.6);
  --text-dim: rgba(255, 255, 255, 0.4);
  
  /* Border Colors */
  --border-light: rgba(255, 255, 255, 0.1);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(255, 255, 255, 0.2);
  
  /* Status Colors */
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --success-border: rgba(34, 197, 94, 0.3);
  --error: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-coral) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 100%);
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 50px;
  
  /* Shadows */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 40px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-primary: 0 10px 30px rgba(102, 126, 234, 0.4);
  --shadow-accent: 0 10px 30px rgba(245, 87, 108, 0.4);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.4s ease;
  --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 100;
  --z-modal: 200;
  --z-toast: 300;
}

/* ============================================
   Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Animated background gradient */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at top left, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at center, rgba(255, 255, 255, 0.02) 0%, transparent 70%);
  animation: breathe 20s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ============================================
   Particles Effect
   ============================================ */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: var(--z-base);
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  animation: float 20s infinite linear;
}

@keyframes float {
  from {
    transform: translateY(100vh) translateX(0);
    opacity: 0;
  }
  10% { opacity: 1; }
  90% { opacity: 1; }
  to {
    transform: translateY(-100vh) translateX(100px);
    opacity: 0;
  }
}

/* ============================================
   Layout Components
   ============================================ */
.main-container {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

/* ============================================
   Logo Section
   ============================================ */
.logo-section {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: var(--z-dropdown);
  animation: slideDown 1s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.logo-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  margin-bottom: var(--space-2);
}

.logo-subtitle {
  color: var(--text-muted);
  font-size: var(--font-size-base);
  font-weight: 400;
}

/* ============================================
   Split Cards Layout
   ============================================ */
.split {
  position: relative;
  display: flex;
  width: 90%;
  max-width: 1200px;
  height: 60vh;
  min-height: 400px;
  gap: 30px;
  animation: fadeInScale 1s ease-out 0.3s both;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ============================================
   Card Component
   ============================================ */
.card {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-bounce);
  box-shadow: var(--shadow-md);
}

.card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* Glass overlay effect */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-overlay);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  transition: all var(--transition-slow);
  z-index: 1;
}

.card:hover::before {
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.2) 100%);
}

.card-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 30px;
}

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  border: 2px solid var(--border-accent);
  transition: all var(--transition-base);
}

.card:hover .card-icon {
  transform: rotate(360deg) scale(1.1);
  background: rgba(255, 255, 255, 0.15);
}

.card-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--text-primary);
}

.card h2 {
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.card-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.card:hover .card-description {
  opacity: 1;
  transform: translateY(0);
}

/* Card variants */
.request-card {
  background-image: var(--gradient-primary);
}

.download-card {
  background-image: var(--gradient-accent);
}

/* ============================================
   Glassmorphism Overlay
   ============================================ */
.glass-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: var(--z-overlay);
  overflow-y: auto;
  padding: 20px;
}

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

/* ============================================
   Form Styles
   ============================================ */
.form-wrapper {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: 40px;
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  animation: formSlideUp 0.5s ease-out;
}

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

.form-title {
  font-size: var(--font-size-2xl);
  margin-bottom: 10px;
  text-align: center;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 30px;
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  background: var(--bg-input-focus);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select option {
  background: #1a1a2e;
  color: var(--text-primary);
}

/* Checkbox styling */
.form-group.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.form-group.checkbox-group input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--primary);
}

.form-group.checkbox-group label {
  margin-bottom: 0;
  cursor: pointer;
  line-height: 1.4;
}

/* Turnstile container */
.turnstile-container {
  display: flex;
  justify-content: center;
  margin: 20px 0;
}

/* ============================================
   Button Styles
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  font-family: inherit;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

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

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

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

.btn-accent:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* Submit button (legacy support) */
.submit-button {
  width: 100%;
  padding: 14px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.submit-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.submit-button:hover::before {
  left: 100%;
}

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

.submit-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ============================================
   Back Button
   ============================================ */
.back-button {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-accent);
  color: var(--text-primary);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.95rem;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  z-index: 101;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.back-button:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(-5px);
}

/* ============================================
   Success/Error Messages
   ============================================ */
.success-message {
  display: none;
  text-align: center;
  padding: 20px;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-md);
  color: var(--success);
  margin-top: 20px;
}

.success-message.show {
  display: block;
  animation: fadeIn 0.5s ease;
}

.error-message {
  text-align: center;
  padding: 20px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  color: var(--error);
  margin-top: 20px;
}

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

/* ============================================
   Popup/Modal Component
   ============================================ */
.popup {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: var(--z-modal);
  padding: 20px;
}

.popup.active {
  opacity: 1;
  visibility: visible;
}

.popup-content {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: 40px;
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  animation: popupSlideUp 0.5s ease-out;
  text-align: center;
}

@keyframes popupSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.popup-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: var(--gradient-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.popup-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--text-primary);
}

.popup-title {
  font-size: 1.8rem;
  margin-bottom: 15px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.popup-message {
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  margin-bottom: 30px;
}

.popup-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
}

/* Legacy popup button support */
.popup-button {
  padding: 12px 30px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  position: relative;
  overflow: hidden;
}

.popup-button-primary {
  background: var(--gradient-accent);
  color: var(--text-primary);
}

.popup-button-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.popup-button-primary:hover::before {
  left: 100%;
}

.popup-button-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.popup-button-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
}

.popup-button-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  z-index: var(--z-dropdown);
}

.footer .admin-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.75rem;
  opacity: 0.5;
  transition: all var(--transition-base);
}

.footer .admin-link:hover {
  color: var(--primary);
  opacity: 1;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.hidden { display: none !important; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 768px) {
  .logo-section {
    top: 20px;
  }

  .logo-title {
    font-size: 1.8rem;
  }

  .logo-subtitle {
    font-size: var(--font-size-sm);
  }

  .main-container {
    padding: 100px 20px 80px;
  }

  .split {
    flex-direction: column;
    width: 100%;
    height: auto;
    gap: 20px;
  }

  .card {
    min-height: 200px;
    border-radius: var(--radius-lg);
  }

  .card h2 {
    font-size: 1.8rem;
  }

  .card-icon {
    width: 60px;
    height: 60px;
  }

  .card-icon svg {
    width: 30px;
    height: 30px;
  }

  .card-description {
    opacity: 1;
    transform: translateY(0);
    font-size: var(--font-size-sm);
  }

  .glass-overlay,
  .request-form-container {
    padding: 60px 20px 20px;
  }

  .form-wrapper {
    padding: 30px 20px;
    border-radius: var(--radius-xl);
    margin: 0 10px;
  }

  .form-title {
    font-size: 1.6rem;
  }

  .back-button {
    top: 10px;
    left: 10px;
    padding: 8px 16px;
    font-size: var(--font-size-sm);
  }

  .footer {
    bottom: 10px;
    font-size: var(--font-size-xs);
  }

  .popup-content {
    padding: 30px 20px;
  }

  .popup-title {
    font-size: 1.5rem;
  }

  .popup-message {
    font-size: 0.95rem;
  }

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

  .popup-button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .logo-title {
    font-size: 1.5rem;
  }

  .card h2 {
    font-size: 1.5rem;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 10px 14px;
    font-size: 0.95rem;
  }

  .submit-button {
    padding: 12px;
    font-size: 0.95rem;
  }
}

/* Landscape mode adjustments */
@media (max-height: 600px) and (orientation: landscape) {
  .split {
    height: 70vh;
    min-height: 300px;
  }

  .card {
    min-height: 150px;
  }

  .card-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
  }

  .card h2 {
    font-size: 1.5rem;
  }

  .logo-section {
    top: 10px;
  }
}

/* Legacy class support for request-form-container */
.request-form-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: var(--z-overlay);
  overflow-y: auto;
  padding: 20px;
}

.request-form-container.active {
  opacity: 1;
  visibility: visible;
}

/* Legacy class support for login-info-popup */
.login-info-popup {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: var(--z-modal);
  padding: 20px;
}

.login-info-popup.active {
  opacity: 1;
  visibility: visible;
}