/* Design System Foundation for UnlockMe */

/* CSS Variables for Consistent Theming */
:root {
    /* Primary Colors - Same for both themes */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    --primary-gradient-hover: linear-gradient(135deg, #5a6fd8 0%, #e082ea 100%);
    --primary-1: #667eea;
    --primary-2: #f093fb;
    --primary-3: #f5576c;
    
    /* Theme-specific colors will be set below */
}

/* Dark Theme (Default) */
:root,
[data-theme="dark"] {
    /* Neutral Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: rgba(255, 255, 255, 0.02);
    --bg-card: rgba(255, 255, 255, 0.02);
    --bg-hover: rgba(255, 255, 255, 0.06);
    --bg-active: rgba(255, 255, 255, 0.08);
    --bg-input: rgba(255, 255, 255, 0.04);
    
    /* Text Colors */
    --text-primary: rgba(255, 255, 255, 1);
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-tertiary: rgba(255, 255, 255, 0.6);
    --text-muted: rgba(255, 255, 255, 0.4);
    --text-disabled: rgba(255, 255, 255, 0.3);
    
    /* Border Colors */
    --border-default: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --border-focus: rgba(240, 147, 251, 0.5);
    --border-success: rgba(74, 222, 128, 0.5);
    --border-warning: rgba(251, 191, 36, 0.5);
    --border-error: rgba(239, 68, 68, 0.5);
    
    /* Status Colors */
    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.1);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.08);
}

/* Light Theme */
[data-theme="light"] {
    /* Neutral Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: rgba(0, 0, 0, 0.02);
    --bg-card: rgba(0, 0, 0, 0.02);
    --bg-hover: rgba(0, 0, 0, 0.04);
    --bg-active: rgba(0, 0, 0, 0.06);
    --bg-input: rgba(0, 0, 0, 0.03);
    
    /* Text Colors */
    --text-primary: rgba(0, 0, 0, 0.9);
    --text-secondary: rgba(0, 0, 0, 0.7);
    --text-tertiary: rgba(0, 0, 0, 0.5);
    --text-muted: rgba(0, 0, 0, 0.4);
    --text-disabled: rgba(0, 0, 0, 0.3);
    
    /* Border Colors */
    --border-default: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
    --border-focus: rgba(240, 147, 251, 0.5);
    --border-success: rgba(74, 222, 128, 0.5);
    --border-warning: rgba(251, 191, 36, 0.5);
    --border-error: rgba(239, 68, 68, 0.5);
    
    /* Status Colors - Adjusted for light theme */
    --success: #16a34a;
    --success-bg: rgba(74, 222, 128, 0.15);
    --warning: #ea580c;
    --warning-bg: rgba(251, 191, 36, 0.15);
    --error: #dc2626;
    --error-bg: rgba(239, 68, 68, 0.15);
    --info: #2563eb;
    --info-bg: rgba(59, 130, 246, 0.15);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.2);
    
    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.08);
}
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Z-index Scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal-backdrop: 300;
    --z-modal: 400;
    --z-notification: 500;
    --z-tooltip: 600;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
}

/* Base Component Styles */

/* Glass Morphism Effect */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

/* Button Base */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-1px);
}

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

/* Button Variants */
.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-hover);
}

/* Button Sizes */
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* Modal Styles */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.modal-backdrop.active {
    opacity: 1;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-modal);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-slow);
}

/* Modal Sizes */
.modal-small {
    width: 400px;
}

.modal-medium {
    width: 600px;
}

.modal-large {
    width: 800px;
}

.modal.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

[data-theme="light"] .modal {
    background: var(--bg-secondary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-default);
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
}

/* Alert Styles */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid;
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    animation: slideIn var(--transition-slow) ease;
}

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

.alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.alert-message {
    font-size: 14px;
    opacity: 0.9;
}

/* Alert Variants */
.alert-success {
    background: var(--success-bg);
    border-color: var(--border-success);
    color: var(--success);
}

.alert-warning {
    background: var(--warning-bg);
    border-color: var(--border-warning);
    color: var(--warning);
}

.alert-error {
    background: var(--error-bg);
    border-color: var(--border-error);
    color: var(--error);
}

.alert-info {
    background: var(--info-bg);
    border-color: var(--info);
    color: var(--info);
}

/* Notification Toast */
.notification-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.notification {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    min-width: 320px;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    animation: slideInRight var(--transition-slow) ease;
}

[data-theme="light"] .notification {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.notification.exit {
    animation: slideOutRight var(--transition-slow) ease forwards;
}

@keyframes slideOutRight {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.notification-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.notification-message {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.notification-close {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.notification-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--bg-active);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.badge-primary {
    background: var(--primary-gradient);
    color: white;
    border: none;
}

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

.badge-premium {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: #78350f;
    border: none;
    box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
}

/* Card Component */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-default);
}

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

.card-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-default);
    background: var(--bg-tertiary);
}

/* Utility Classes */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.divider {
    height: 1px;
    background: var(--border-default);
    margin: var(--space-lg) 0;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-hover) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Responsive Utilities */
@media (max-width: 640px) {
    .modal {
        width: calc(100vw - 32px);
        max-height: calc(100vh - 32px);
    }
    
    .notification-container {
        top: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
    }
    
    .notification {
        min-width: unset;
        width: 100%;
    }
}