/* Theme System - Light/Dark Mode CSS Variables */

:root {
    /* Light theme (default) */
    --theme-bg: #f5f5f5;
    --theme-bg-secondary: #ffffff;
    --theme-bg-tertiary: #fafafa;
    --theme-text: #333333;
    --theme-text-secondary: #666666;
    --theme-text-muted: #999999;
    --theme-border: #e0e0e0;
    --theme-border-light: #eeeeee;
    --theme-card-bg: #ffffff;
    --theme-card-shadow: rgba(0, 0, 0, 0.1);
    --theme-header: #64b5f6;
    --theme-app-bar: #64b5f6;
    --theme-app-bar-text: #ffffff;
    --theme-nav-bg: #ffffff;
    --theme-nav-hover: #f0f0f0;
    --theme-hover: #f5f5f5;
    --theme-accent: #1976d2;
    --theme-accent-light: #64b5f6;
    --theme-success: #4caf50;
    --theme-warning: #ff9800;
    --theme-danger: #f44336;
    --theme-input-bg: #ffffff;
    --theme-input-border: #cccccc;
    --theme-table-header: #f5f5f5;
    --theme-table-row-alt: #fafafa;
    --theme-table-hover: #f0f0f0;
    --theme-modal-overlay: rgba(0, 0, 0, 0.5);
    --theme-modal-bg: #ffffff;
    --theme-badge-bg: #e3f2fd;
    --theme-badge-text: #1976d2;
    --theme-gradient-start: #667eea;
    --theme-gradient-end: #764ba2;
    --theme-login-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --theme-error-bg: #ffebee;
    --theme-error-text: #c62828;
    --theme-success-bg: #e8f5e9;
    --theme-success-text: #2e7d32;
    --theme-warning-bg: #fff3e0;
    --theme-warning-text: #e65100;
    --theme-info-bg: #e3f2fd;
    --theme-info-text: #1565c0;
}

html[data-theme="dark"] {
    /* Dark theme */
    --theme-bg: #121212;
    --theme-bg-secondary: #1e1e1e;
    --theme-bg-tertiary: #252525;
    --theme-text: #e0e0e0;
    --theme-text-secondary: #b0b0b0;
    --theme-text-muted: #808080;
    --theme-border: #333333;
    --theme-border-light: #2a2a2a;
    --theme-card-bg: #1e1e1e;
    --theme-card-shadow: rgba(0, 0, 0, 0.4);
    --theme-header: #1565c0;
    --theme-app-bar: #1565c0;
    --theme-app-bar-text: #ffffff;
    --theme-nav-bg: #1e1e1e;
    --theme-nav-hover: #2a2a2a;
    --theme-hover: #2a2a2a;
    --theme-accent: #64b5f6;
    --theme-accent-light: #90caf9;
    --theme-success: #66bb6a;
    --theme-warning: #ffa726;
    --theme-danger: #ef5350;
    --theme-input-bg: #2a2a2a;
    --theme-input-border: #444444;
    --theme-table-header: #252525;
    --theme-table-row-alt: #1a1a1a;
    --theme-table-hover: #2a2a2a;
    --theme-modal-overlay: rgba(0, 0, 0, 0.7);
    --theme-modal-bg: #1e1e1e;
    --theme-badge-bg: #1e3a5f;
    --theme-badge-text: #90caf9;
    --theme-gradient-start: #1a237e;
    --theme-gradient-end: #4a148c;
    --theme-login-gradient: linear-gradient(135deg, #1a237e 0%, #4a148c 100%);
    --theme-error-bg: #4e1a1a;
    --theme-error-text: #ef9a9a;
    --theme-success-bg: #1b3d1b;
    --theme-success-text: #a5d6a7;
    --theme-warning-bg: #4e3419;
    --theme-warning-text: #ffcc80;
    --theme-info-bg: #1a2d4e;
    --theme-info-text: #90caf9;
}

/* Theme toggle button */
.theme-toggle {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 6px 10px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: inherit;
    font-size: 14px;
    transition: background 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.theme-toggle .material-icons {
    font-size: 18px;
}

/* Hide the icon that doesn't match current theme */
html:not([data-theme="dark"]) .theme-toggle .icon-light {
    display: none;
}

html[data-theme="dark"] .theme-toggle .icon-dark {
    display: none;
}

/* Apply theme variables to common elements */
body {
    background-color: var(--theme-bg);
    color: var(--theme-text);
}

.card, .modal-content, .login-card {
    background-color: var(--theme-card-bg);
    border-color: var(--theme-border);
}

input, select, textarea {
    background-color: var(--theme-input-bg);
    border-color: var(--theme-input-border);
    color: var(--theme-text);
}

.data-table th {
    background-color: var(--theme-table-header);
}

.data-table tr:nth-child(even) {
    background-color: var(--theme-table-row-alt);
}

.data-table tr:hover {
    background-color: var(--theme-table-hover);
}

.modal {
    background-color: var(--theme-modal-overlay);
}

.modal-content {
    background-color: var(--theme-modal-bg);
}