/* ============================================
   VAULTREADER - MODERN DESIGN SYSTEM
   World-Class SaaS UI/UX - Web 4.0 Standards
   ============================================ */

:root {
    /* Primary Colors */
    --primary-600: #667eea;
    --primary-700: #5a67d8;
    --primary-800: #4c51bf;
    
    /* Secondary Colors */
    --secondary-600: #764ba2;
    --secondary-700: #6b3fa0;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Semantic Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* ============================================
   CUSTOM CHECKBOX (Modern Toggle Style)
   ============================================ */

.custom-checkbox {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    gap: var(--space-3);
}

.custom-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkbox-box {
    position: relative;
    height: 20px;
    width: 20px;
    background-color: white;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.custom-checkbox:hover .checkbox-box {
    border-color: var(--primary-600);
}

.custom-checkbox input[type="checkbox"]:checked ~ .checkbox-box {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    border-color: var(--primary-600);
}

.checkbox-box:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.custom-checkbox input[type="checkbox"]:checked ~ .checkbox-box:after {
    display: block;
}

.checkbox-label {
    color: var(--gray-700);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.5;
}

/* ============================================
   CUSTOM TOGGLE SWITCH
   ============================================ */

.toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    gap: var(--space-3);
}

.toggle-switch input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.toggle-slider {
    position: relative;
    width: 44px;
    height: 24px;
    background-color: var(--gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.toggle-slider:before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: all var(--transition-base);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input[type="checkbox"]:checked ~ .toggle-slider {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
}

.toggle-switch input[type="checkbox"]:checked ~ .toggle-slider:before {
    transform: translateX(20px);
}

.toggle-switch:hover .toggle-slider {
    opacity: 0.9;
}

/* ============================================
   MODERN INPUT FIELDS
   ============================================ */

.input-group {
    margin-bottom: var(--space-5);
}

.input-label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--gray-700);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.input-field {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--gray-900);
    background-color: white;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    font-family: var(--font-sans);
}

.input-field:hover {
    border-color: var(--gray-400);
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-600);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-field::placeholder {
    color: var(--gray-400);
}

.input-helper {
    margin-top: var(--space-2);
    font-size: 0.8125rem;
    color: var(--gray-500);
    line-height: 1.4;
}

/* ============================================
   MODERN BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-sans);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1.5px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   MODERN CARDS
   ============================================ */

.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-body {
    padding: var(--space-6);
}

/* ============================================
   BADGES & TAGS
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

.badge-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: start;
    gap: var(--space-3);
}

.alert-success {
    background: var(--success-light);
    border-color: var(--success);
    color: #065f46;
}

.alert-error {
    background: var(--error-light);
    border-color: var(--error);
    color: #991b1b;
}

.alert-warning {
    background: var(--warning-light);
    border-color: var(--warning);
    color: #92400e;
}

.alert-info {
    background: var(--info-light);
    border-color: var(--info);
    color: #1e40af;
}

/* ============================================
   GLASSMORPHISM EFFECTS
   ============================================ */

.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

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

.animate-fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.animate-slide-in {
    animation: slideIn var(--transition-slow) ease-out;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 0.9375rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-900 { color: var(--gray-900); }

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

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }