/* ShareSphere - Futuristic Image Sharing Platform */
:root {
  /* Color Palette */
  --primary-bg: #0a0a0f;
  --secondary-bg: #141420;
  --tertiary-bg: #1e1e2e;
  --accent-purple: #6366f1;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --neon-purple: #8b5cf6;
  --neon-blue: #60a5fa;
  --neon-cyan: #22d3ee;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: rgba(139, 92, 246, 0.2);
  --border-glow: rgba(139, 92, 246, 0.4);
  --success: #059669;
  --warning: #d97706;
  --error: #dc2626;
  
  /* Fonts */
  --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.15);
  --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3), 0 0 10px rgba(139, 92, 246, 0.1);
  --shadow-elevated: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 20px rgba(139, 92, 246, 0.2);
}

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

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(6, 182, 212, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--neon-purple), var(--neon-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

h2 {
  font-size: 1.75rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.25rem;
  color: var(--text-secondary);
}

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.main-content {
  min-height: 100vh;
  padding: var(--spacing-xl) 0;
}

/* Header Section */
.header {
  background: rgba(20, 20, 32, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-purple), transparent);
  animation: pulse 2s ease-in-out infinite;
}

/* Upload Form */
.upload-form {
  display: grid;
  gap: var(--spacing-lg);
}

.upload-dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  background: rgba(30, 30, 46, 0.5);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--neon-purple);
  background: rgba(139, 92, 246, 0.05);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.upload-dropzone.dragover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(139, 92, 246, 0.1);
  animation: pulse 1s ease-in-out infinite;
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--neon-purple);
  display: block;
}

.upload-text {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.upload-subtext {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Form Controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-md);
  align-items: end;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(30, 30, 46, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.checkbox-wrapper:hover {
  border-color: var(--neon-purple);
  background: rgba(139, 92, 246, 0.05);
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--neon-purple);
  cursor: pointer;
}

label {
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 500;
}

/* Buttons */
.btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: rgba(30, 30, 46, 0.8);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.2), transparent);
  transition: left 0.6s ease;
}

.grecaptcha-badge {
  display: none !important;
}

.btn:hover {
  border-color: var(--neon-purple);
  color: var(--neon-purple);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  border-color: var(--neon-purple);
  color: white;
}

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

/* Section Cards */
.section {
  background: rgba(20, 20, 32, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-card);
  position: relative;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.section-title {
  font-family: var(--font-mono);
  color: var(--neon-purple);
  font-size: 1.25rem;
  margin: 0;
}

.section-count {
  background: rgba(139, 92, 246, 0.2);
  color: var(--neon-purple);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
}

/* Image Grid */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.image-card {
  background: rgba(30, 30, 46, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.image-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-purple);
  box-shadow: var(--shadow-elevated);
}

.image-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-purple), var(--neon-blue), var(--neon-cyan));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.image-card:hover::before {
  transform: scaleX(1);
}

.image-preview {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  background: rgba(10, 10, 15, 0.5);
  border: 1px solid rgba(139, 92, 246, 0.1);
}

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

.image-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.image-size {
  color: var(--accent-cyan);
}

.image-views {
  color: var(--accent-green);
}

.image-date {
  color: var(--text-muted);
}

/* Privacy Badge */
.privacy-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 600;
  border: 1px solid;
}

.privacy-badge.public {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.privacy-badge.private {
  background: rgba(220, 38, 38, 0.2);
  border-color: var(--error);
  color: var(--error);
}

/* Loading States */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(139, 92, 246, 0.2);
  border-top: 2px solid var(--neon-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: var(--spacing-sm);
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 8px;
  background: rgba(30, 30, 46, 0.5);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: var(--spacing-md) 0;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-purple), var(--neon-blue));
  border-radius: var(--radius-sm);
  transition: width 0.3s ease;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: shimmer 2s infinite;
}

/* Hexagonal Pattern Elements */
.hex-pattern {
  position: absolute;
  width: 60px;
  height: 60px;
  opacity: 0.1;
  background: var(--neon-purple);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}

.hex-pattern.hex-1 {
  top: 10%;
  right: 10%;
  animation: float 6s ease-in-out infinite;
}

.hex-pattern.hex-2 {
  bottom: 20%;
  left: 5%;
  animation: float 8s ease-in-out infinite reverse;
}

.hex-pattern.hex-3 {
  top: 50%;
  right: 20%;
  animation: float 7s ease-in-out infinite;
  background: var(--neon-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .header {
    padding: var(--spacing-lg);
  }
  
  .upload-dropzone {
    padding: var(--spacing-lg);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .image-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--spacing-md) 0;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
  
  .upload-dropzone {
    padding: var(--spacing-md);
  }
  
  .upload-icon {
    font-size: 2rem;
  }
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--neon-purple); }
  50% { box-shadow: 0 0 20px var(--neon-purple), 0 0 30px var(--neon-purple); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden { display: none; }
.visible { display: block; }

/* Focus States */
*:focus {
  outline: 2px solid var(--neon-purple);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: rgba(139, 92, 246, 0.3);
  color: var(--text-primary);
}