/* ===== Design Tokens - Unified Photoroom UA Creative Tools ===== */

:root {
  /* Primary Color Palette - Indigo Gradient */
  --indigo-1: #667eea;          /* Primary brand color */
  --indigo-2: #764ba2;          /* Primary dark variant */
  --indigo-3: #5a6fe0;          /* Hover/depth variant */
  --indigo-4: #8b9cf5;          /* Light variant */
  
  /* Accent Colors - Blue family */
  --accent-1: #7aa7ff;          /* Blue accent */
  --accent-2: #4d88ff;          /* Blue accent dark */
  --accent-3: #6bd0ff;          /* Cyan accent */
  --accent-4: #249dee;          /* Cyan accent dark */
  
  /* Neutral Colors */
  --ink-1: #333333;             /* Primary text */
  --ink-2: #495057;             /* Secondary text */
  --ink-3: #6c757d;             /* Muted text */
  
  /* Surface Colors */
  --surface-1: #ffffff;         /* Primary background */
  --surface-2: #f8f9fa;         /* Secondary background */
  --surface-3: #e9ecef;         /* Tertiary background */
  
  /* Semantic Colors */
  --success-1: #28a745;         /* Success primary */
  --success-2: #d4edda;         /* Success background */
  --warning-1: #ffc107;         /* Warning primary */
  --warning-2: #fff3cd;         /* Warning background */
  --danger-1: #dc3545;          /* Danger primary */
  --danger-2: #f8d7da;          /* Danger background */
  --info-1: #17a2b8;           /* Info primary */
  --info-2: #d1ecf1;           /* Info background */
  
  /* Border and Divider Colors */
  --border-1: #e9ecef;          /* Primary border */
  --border-2: #dee2e6;          /* Secondary border */
  --border-3: #adb5bd;          /* Tertiary border */
  
  /* Spacing Scale */
  --space-xs: 0.25rem;          /* 4px */
  --space-sm: 0.5rem;           /* 8px */
  --space-md: 1rem;             /* 16px */
  --space-lg: 1.5rem;           /* 24px */
  --space-xl: 2rem;             /* 32px */
  --space-2xl: 3rem;            /* 48px */
  --space-3xl: 4rem;            /* 64px */
  
  /* Border Radius Scale */
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 15px;
  --radius-xl: 20px;
  
  /* Shadow Scale */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 5px 15px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.1);
  
  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-mono: 'Courier New', monospace;
}

/* ===== Component Overrides ===== */

/* Primary Buttons */
.btn-primary {
  background: linear-gradient(45deg, var(--indigo-1), var(--indigo-2));
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 25px;
  font-weight: 500;
  transition: all 0.3s ease;
  color: var(--surface-1);
}

.btn-primary:hover {
  background: linear-gradient(45deg, var(--indigo-3), var(--indigo-1));
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
  color: var(--surface-1);
}

.btn-primary:focus {
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
  color: var(--surface-1);
}

/* Success Buttons */
.btn-success {
  background: linear-gradient(45deg, var(--success-1), #20c997);
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 25px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-success:hover {
  background: linear-gradient(45deg, #20c997, var(--success-1));
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

/* Secondary Buttons */
.btn-secondary {
  background: var(--ink-2);
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 25px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: var(--ink-1);
  transform: translateY(-2px);
}

/* Outline Buttons */
.btn-outline-primary {
  color: var(--indigo-1);
  border-color: var(--indigo-1);
  border-radius: var(--radius-md);
}

.btn-outline-primary:hover,
.btn-outline-primary.active {
  color: var(--surface-1);
  background-color: var(--indigo-1);
  border-color: var(--indigo-1);
}

.btn-outline-secondary {
  color: var(--ink-2);
  border-color: var(--border-2);
  border-radius: var(--radius-md);
}

/* Cards */
.card {
  border: 1px solid var(--border-1);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  background: linear-gradient(135deg, var(--indigo-1), var(--indigo-2));
  color: var(--surface-1);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
}

/* Form Controls */
.form-control,
.form-select {
  border-radius: var(--radius-md);
  border: 2px solid var(--border-1);
  padding: 12px 15px;
  transition: all 0.3s ease;
  font-family: var(--font-family);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--indigo-1);
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Form Check Inputs */
.form-check-input:checked {
  background-color: var(--indigo-1);
  border-color: var(--indigo-1);
}

/* Progress Bars */
.progress {
  height: 25px;
  border-radius: var(--radius-lg);
  background-color: var(--surface-2);
}

.progress-bar {
  background: linear-gradient(135deg, var(--indigo-1), var(--indigo-2));
  border-radius: var(--radius-lg);
  transition: width 0.3s ease;
}

/* Alerts */
.alert {
  border-radius: var(--radius-md);
  border: none;
}

.alert-info {
  background: linear-gradient(135deg, #eef1ff, #e9edff);
  border: 1px solid #e0e6ff;
  color: #3b4cca;
}

.alert-success {
  background-color: var(--success-2);
  color: var(--success-1);
}

.alert-warning {
  background-color: var(--warning-2);
  color: var(--warning-1);
}

.alert-danger {
  background-color: var(--danger-2);
  color: var(--danger-1);
}

/* Navigation */
.navbar {
  background: linear-gradient(135deg, var(--indigo-1), var(--indigo-2)) !important;
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-lg);
}

.navbar-brand {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--surface-1) !important;
}

.nav-link {
  font-weight: 500;
  transition: all 0.3s ease;
  border-radius: var(--radius-sm);
  margin: 0 2px;
  color: rgba(255, 255, 255, 0.9) !important;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  color: var(--surface-1) !important;
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  font-weight: 600;
  color: var(--surface-1) !important;
}

/* Utilities */
.bg-gradient-primary {
  background: linear-gradient(135deg, var(--indigo-1), var(--indigo-2));
}

.bg-gradient-accent {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
}

.text-primary-custom {
  color: var(--indigo-1) !important;
}

.text-secondary-custom {
  color: var(--ink-2) !important;
}

.border-primary-custom {
  border-color: var(--indigo-1) !important;
}

/* Body and Layout */
body {
  background: linear-gradient(135deg, var(--indigo-1) 0%, var(--indigo-2) 100%);
  min-height: 100vh;
  font-family: var(--font-family);
}

/* Main Container */
.main-container {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  margin: var(--space-lg) auto;
  max-width: 1200px;
  padding: var(--space-xl);
  backdrop-filter: blur(10px);
}

/* Section Styling */
.section {
  background: var(--surface-1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-1);
}

.section h3 {
  color: var(--ink-2);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

/* File Upload Areas */
.file-upload,
.upload-area {
  border: 2px dashed var(--border-2);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  transition: all 0.3s ease;
  background: var(--surface-2);
  cursor: pointer;
}

.file-upload:hover,
.upload-area:hover {
  border-color: var(--indigo-1);
  background: rgba(102, 126, 234, 0.05);
}

.file-upload.dragover,
.upload-area.dragover {
  border-color: var(--indigo-1);
  background: rgba(102, 126, 234, 0.1);
}

/* Special Component Styling */
.tool-card {
  background: rgba(255, 255, 255, 0.95);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.tool-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  color: inherit;
  text-decoration: none;
}

.tool-icon {
  font-size: 3rem;
  color: var(--indigo-1);
  margin-bottom: var(--space-md);
}

.hero-section {
  padding: var(--space-3xl) 0;
  text-align: center;
  color: var(--surface-1);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.made-with-love {
  text-align: center;
  padding: var(--space-xl) 0;
  color: var(--surface-1);
  font-weight: 500;
  opacity: 0.8;
}

/* Animation Utilities */
@keyframes shimmer {
  0%, 100% { box-shadow: 0 10px 30px rgba(102, 126, 234, 0.30), 0 0 20px rgba(118, 75, 162, 0.20); }
  50% { box-shadow: 0 15px 40px rgba(102, 126, 234, 0.50), 0 0 30px rgba(118, 75, 162, 0.40); }
}

@keyframes shine {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.animate-shimmer {
  animation: shimmer 3s ease-in-out infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-container {
    margin: var(--space-sm);
    padding: var(--space-lg);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section {
    padding: var(--space-md);
  }
}