/**
 * File: themes.css
 * Desc: CSS Custom Properties for Theme System
 * Date: 2025-12-30
 *
 * This file defines default CSS custom properties (variables) that are
 * dynamically updated by ui-themes.js when themes are switched.
 *
 * Default Theme: Purple Blossom
 */

:root {
    /* Primary brand colors */
    --primary-purple: #8B7EC8;
    --primary-green: #7FB069;
    --primary-gradient: linear-gradient(135deg, #8B7EC8, #7FB069);

    /* Background colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F0F2F5;
    --bg-card: #FFFFFF;
    --bg-hover: #F5F3FF;

    /* Text colors */
    --text-primary: #2C3E50;
    --text-secondary: #6C757D;
    --text-tertiary: #95A5A6;
    --text-inverse: #FFFFFF;

    /* Border colors */
    --border-color: #E0E0E0;
    --border-light: #F0F0F0;
    --border-dark: #CCCCCC;

    /* Accent colors */
    --accent-success: #7FB069;
    --accent-warning: #F4A261;
    --accent-error: #E76F51;
    --accent-info: #8B7EC8;

    /* Shadow colors */
    --shadow-sm: 0 1px 2px rgba(139, 126, 200, 0.1);
    --shadow-md: 0 2px 8px rgba(139, 126, 200, 0.15);
    --shadow-lg: 0 4px 16px rgba(139, 126, 200, 0.2);
    --shadow-xl: 0 8px 32px rgba(139, 126, 200, 0.25);

    /* Interactive states */
    --hover-opacity: 0.85;
    --active-opacity: 0.7;
    --disabled-opacity: 0.5;

    /* Sidebar specific */
    --sidebar-bg: #FFFFFF;
    --sidebar-border: #E0E0E0;
    --sidebar-text: #2C3E50;
    --sidebar-hover: #F5F3FF;
    --sidebar-active: linear-gradient(135deg, #8B7EC8, #7FB069);
    --sidebar-active-text: #FFFFFF;

    /* Transitions - for smooth theme switching */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Apply theme colors to body */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Card styles using theme variables */
.card,
.panel,
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* Button styles using theme variables */
.btn-primary,
.primary-button,
button.primary {
    background: var(--primary-gradient);
    color: var(--text-inverse);
    border: none;
    transition: opacity var(--transition-fast);
}

.btn-primary:hover,
.primary-button:hover,
button.primary:hover {
    opacity: var(--hover-opacity);
}

.btn-primary:active,
.primary-button:active,
button.primary:active {
    opacity: var(--active-opacity);
}

/* Secondary button */
.btn-secondary,
.secondary-button,
button.secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.btn-secondary:hover,
.secondary-button:hover,
button.secondary:hover {
    background-color: var(--bg-tertiary);
}

/* Link styles */
a {
    color: var(--primary-purple);
    transition: opacity var(--transition-fast);
}

a:hover {
    opacity: var(--hover-opacity);
}

/* Input styles */
input,
textarea,
select {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast), background-color var(--transition-normal);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-purple);
    outline: none;
}

/* Headers using theme colors */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

/* Sidebar integration */
#sidebar {
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    color: var(--sidebar-text);
}

.sidebar-item {
    color: var(--sidebar-text);
    transition: background-color var(--transition-fast);
}

.sidebar-item:hover {
    background-color: var(--sidebar-hover);
}

.sidebar-item.active {
    background: var(--sidebar-active);
    color: var(--sidebar-active-text);
}

/* Status badges */
.badge-success {
    background-color: var(--accent-success);
    color: var(--text-inverse);
}

.badge-warning {
    background-color: var(--accent-warning);
    color: var(--text-inverse);
}

.badge-error {
    background-color: var(--accent-error);
    color: var(--text-inverse);
}

.badge-info {
    background-color: var(--accent-info);
    color: var(--text-inverse);
}

/* Dividers */
hr,
.divider {
    border-color: var(--border-color);
}

/* Disabled states */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled,
.disabled {
    opacity: var(--disabled-opacity);
    cursor: not-allowed;
}

/* Modal overlay */
.modal-overlay {
    background-color: rgba(0, 0, 0, 0.5);
}

/* Tooltips */
.tooltip {
    background-color: var(--text-primary);
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

/* Loading spinner */
.spinner {
    border-top-color: var(--primary-purple);
    border-right-color: var(--primary-green);
}

/* Code blocks (if any) */
code,
pre {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Tables */
table {
    border-color: var(--border-color);
}

thead {
    background-color: var(--bg-secondary);
}

tbody tr:hover {
    background-color: var(--bg-hover);
}

/* Scrollbar theming (Webkit browsers) */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Selection color */
::selection {
    background-color: var(--primary-purple);
    color: var(--text-inverse);
}

::-moz-selection {
    background-color: var(--primary-purple);
    color: var(--text-inverse);
}