/**
 * @file main.css
 * @description Central stylesheet for the Admin Panel.
 *              Includes "Forest Retreat" design system with Light & Dark modes.
 * @version 1.1 - CORRECTED: Removed rogue pseudo-element animation on .menu-item.active
 */

/* --- 1. Design System & Theming (CSS Variables) --- */
:root {
    /* Font & Typography */
    --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Sizing & Spacing */
    --spacing-unit: 8px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --sidebar-width: 240px;
    
    /* Transitions */
    --transition-fast: all 0.2s ease-in-out;
    --transition-base: all 0.3s ease-in-out;

    /* Light Theme (Default) */
    --c-primary: #198754;      /* Forest Green */
    --c-primary-soft: #e6f3ec; /* Light Forest Green */
    --c-accent: #FFC107;       /* Sand Gold */
    --c-danger: #DC3545;       /* Coral Red */
    --c-danger-soft: #fde8e9;
    --c-success: #198754;      /* Forest Green */
    --c-success-soft: #e6f3ec;
    --c-warning: #fd7e14;      /* Sunset Orange */
    --c-warning-soft: #fff2e7;

    --c-bg-main: #F8F9FA;      /* Light Gray (Main background) */
    --c-bg-content: #FFFFFF;   /* White (Cards, Modals) */
    --c-bg-sidebar: #FFFFFF;   /* White (Sidebar) */
    --c-bg-hover: #f1f3f5;     /* Lighter Gray (Hover states) */

    --c-text-primary: #212529; /* Dark Charcoal (Main text) */
    --c-text-secondary: #6C757D;/* Medium Gray (Subtitles, helpers) */
    --c-text-on-primary: #FFFFFF; /* White text on primary buttons */

    --c-border: #E9ECEF;       /* Light border color */
    --c-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --c-shadow-strong: 0 8px 24px rgba(0, 0, 0, 0.1);
}

html.dark-mode {
    /* Dark Theme */
    --c-primary: #20c997;      /* Lighter Teal for better contrast */
    --c-primary-soft: #2d3f38;
    --c-accent: #FFCA2C;
    --c-danger: #ff6b81;
    --c-danger-soft: #4d3338;
    --c-success: #20c997;
    --c-success-soft: #2d3f38;
    --c-warning: #ff9f43;
    --c-warning-soft: #4d3c2d;

    --c-bg-main: #121212;      /* Almost Black */
    --c-bg-content: #1e1e1e;   /* Dark Gray */
    --c-bg-sidebar: #1e1e1e;
    --c-bg-hover: #2f2f2f;

    --c-text-primary: #e9ecef; /* Off-White */
    --c-text-secondary: #adb5bd;/* Light Gray */
    --c-text-on-primary: #121212;

    --c-border: #343a40;
    --c-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --c-shadow-strong: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* --- 2. Base & Reset Styles --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--font-size-base); }
body {
    font-family: var(--font-family-sans);
    background-color: var(--c-bg-main);
    color: var(--c-text-primary);
    line-height: var(--line-height-base);
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
}
a { text-decoration: none; color: var(--c-primary); transition: var(--transition-fast); }
a:hover { filter: brightness(1.2); }
h1, h2, h3, h4 { color: var(--c-text-primary); line-height: 1.3; margin-bottom: calc(var(--spacing-unit) * 2); font-weight: 600; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

/* --- 3. Layout --- */
.admin-container { display: flex; min-height: 100vh; }
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--c-bg-sidebar);
    border-right: 1px solid var(--c-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: var(--transition-base);
}
.sidebar-header { padding: calc(var(--spacing-unit) * 3); text-align: center; border-bottom: 1px solid var(--c-border); }
.sidebar-header h2 { margin: 0; font-size: 1.5rem; }
.sidebar-title { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.sidebar-tagline { margin: 0; font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--c-text-secondary); }
.sidebar-branding { margin-top: 16px; width: 100%; display: flex; justify-content: center; }
.sidebar-logo { max-width: 160px; max-height: 48px; object-fit: contain; image-rendering: -webkit-optimize-contrast; }
.sidebar-placeholder { width: 100%; padding: 12px; border: 1px dashed var(--c-border); border-radius: var(--border-radius); background-color: var(--c-bg-hover); display: flex; align-items: center; justify-content: center; min-height: 48px; }
.brand-text { margin: 0; font-size: 0.85rem; line-height: 1.4; color: var(--c-text-secondary); text-align: center; word-break: break-word; }
.sidebar-menu { padding: calc(var(--spacing-unit) * 2); flex-grow: 1; }
.menu-item {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
    color: var(--c-text-secondary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-unit);
    position: relative; /* Needed for pseudo-elements if used correctly */
}
.menu-item:hover { color: var(--c-text-primary); background-color: var(--c-bg-hover); }
.menu-item.active { color: var(--c-primary); background-color: var(--c-primary-soft); font-weight: 600; }
/*
  THE ROGUE ::after RULE THAT CAUSED THE SPINNER HAS BEEN COMPLETELY REMOVED FROM THIS FILE.
*/
.sidebar-footer { padding: calc(var(--spacing-unit) * 2); margin-top: auto; border-top: 1px solid var(--c-border); display: flex; flex-direction: column; }
.sidebar-maintainer { padding: 12px; border: 1px solid var(--c-border); border-radius: var(--border-radius); background-color: var(--c-bg-hover); margin-bottom: 16px; }
.maintainer-label { display: block; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--c-text-secondary); margin-bottom: 4px; }
.maintainer-text { margin: 0; font-size: 0.9rem; line-height: 1.4; color: var(--c-text-primary); }
.sidebar-user { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: var(--border-radius); background-color: var(--c-bg-content); box-shadow: var(--c-shadow); margin-bottom: 16px; }
.user-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--c-primary); color: #fff; font-weight: 600; display: flex; align-items: center; justify-content: center; }
.user-meta { display: flex; flex-direction: column; gap: 2px; }
.user-meta p { margin: 0; }
.user-name { font-weight: 600; color: var(--c-text-primary); }
.user-role { font-size: 0.85rem; color: var(--c-text-secondary); }
.logout-action { border: 1px solid rgba(220, 38, 38, 0.4); font-weight: 600; justify-content: center; margin-bottom: 16px; }
.logout-action .icon { margin-right: 8px; font-size: 1rem; }
.theme-switcher { display: flex; flex-direction: column; gap: 8px; }
.theme-switcher label { font-size: 0.85rem; color: var(--c-text-secondary); }

.main-content { flex-grow: 1; padding: calc(var(--spacing-unit) * 5); overflow-y: auto; }
.content-header { margin-bottom: calc(var(--spacing-unit) * 5); }
.content-header h1 { margin-bottom: var(--spacing-unit); }
.content-header p { font-size: 1rem; color: var(--c-text-secondary); margin: 0; }

/* --- 4. Core Components --- */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-unit);
    padding: 10px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}
.btn:hover { filter: brightness(1.1); }
.btn:active { transform: translateY(1px); }
.btn:disabled { background-color: var(--c-text-secondary); color: var(--c-bg-main); cursor: not-allowed; filter: none; }
.btn-primary { background-color: var(--c-primary); color: var(--c-text-on-primary); }
.btn-secondary { background-color: var(--c-text-secondary); color: var(--c-text-on-primary); }
.btn-danger { background-color: var(--c-danger); color: var(--c-text-on-primary); }
.btn-success { background-color: var(--c-success); color: var(--c-text-on-primary); }
.btn-outline { background-color: transparent; border: 1px solid var(--c-border); color: var(--c-text-secondary); }
.btn-outline:hover { background-color: var(--c-bg-hover); color: var(--c-text-primary); border-color: var(--c-text-secondary); }
.btn-sm { padding: 5px 10px; font-size: 0.875rem; }

/* Cards & Containers */
.card {
    background-color: var(--c-bg-content);
    border-radius: var(--border-radius-lg);
    padding: calc(var(--spacing-unit) * 3);
    border: 1px solid var(--c-border);
    transition: var(--transition-base);
}
.card-header { display: flex; justify-content: space-between; align-items: center; padding-bottom: calc(var(--spacing-unit) * 2); margin-bottom: calc(var(--spacing-unit) * 3); border-bottom: 1px solid var(--c-border); }
.card-header h2, .card-header h3 { margin: 0; }

/* Tables */
.table-container { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.data-table th { background-color: var(--c-bg-hover); font-weight: 600; color: var(--c-text-secondary); font-size: 0.875rem; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover { background-color: var(--c-bg-hover); }
.data-table .actions { display: flex; gap: var(--spacing-unit); }

/* Forms */
.form-group { margin-bottom: calc(var(--spacing-unit) * 2.5); }
.form-group label { display: block; font-weight: 600; margin-bottom: var(--spacing-unit); font-size: 0.9rem; }
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--c-border);
    border-radius: var(--border-radius);
    background-color: var(--c-bg-main);
    color: var(--c-text-primary);
    font-size: 1rem;
    transition: var(--transition-base);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--c-primary);
    background-color: var(--c-bg-content);
    box-shadow: 0 0 0 3px var(--c-primary-soft);
}
.form-textarea { resize: vertical; min-height: 100px; }
.form-hint { font-size: 0.8rem; color: var(--c-text-secondary); margin-left: 2px; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; z-index: 1000;
    display: none; align-items: center; justify-content: center;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal-card {
    background-color: var(--c-bg-content);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--c-shadow-strong);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.modal-overlay.open .modal-card { transform: scale(1); }
.modal-header { padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3); border-bottom: 1px solid var(--c-border); }
.modal-body { padding: calc(var(--spacing-unit) * 3); overflow-y: auto; flex-grow: 1; }
.modal-footer { padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3); border-top: 1px solid var(--c-border); display: flex; justify-content: flex-end; gap: var(--spacing-unit); }

/* --- 5. Specific Components & Overrides --- */

/* Loader */
#loader-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(255, 255, 255, 0.7);
    display: none; align-items: center; justify-content: center;
}
.dark-mode #loader-overlay { background: rgba(0, 0, 0, 0.7); }
.loading-spinner {
    width: 50px; height: 50px;
    border: 5px solid var(--c-primary-soft);
    border-top-color: var(--c-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast Notifications */
#toast-container {
    position: fixed; top: 20px; right: 20px; z-index: 1001;
    display: flex; flex-direction: column; gap: 10px;
}
.toast {
    min-width: 250px;
    padding: 15px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--c-shadow-strong);
    color: var(--c-text-on-primary);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.4s cubic-bezier(0.21, 1.02, 0.73, 1);
}
.toast.show { opacity: 1; transform: translateX(0); }
.toast-info { background-color: var(--c-text-secondary); }
.toast-success { background-color: var(--c-success); }
.toast-warning { background-color: var(--c-warning); color: var(--c-bg-main); }
.toast-error { background-color: var(--c-danger); }

/* Tags */
.tag { padding: 3px 10px; border-radius: 12px; font-size: 0.8em; font-weight: 600; display: inline-block; }
.tag-system { background-color: var(--c-warning-soft); color: var(--c-warning); }
.tag-custom { background-color: var(--c-success-soft); color: var(--c-success); }


/* --- 6. Responsive Design --- */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: calc(-1 * var(--sidebar-width));
        height: 100%;
        z-index: 500;
        transition: left 0.3s ease-in-out;
    }
    .sidebar.open { left: 0; box-shadow: var(--c-shadow-strong); }
    .main-content { padding: calc(var(--spacing-unit) * 3); }
    .content-header { margin-bottom: calc(var(--spacing-unit) * 3); }

    /* For mobile, table data will be converted to cards by JS if needed */
}