/* Premium Dark Mode Financial Management Website */
/* Design System - Color Palette & Variables */

:root {
    /* Primary Colors - Deep Blues with Vibrant Accents */
    --primary-bg: #0a0e27;
    --secondary-bg: #141b3a;
    --card-bg: #1a2342;
    --card-hover: #222d4f;

    /* Accent Colors */
    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-info: linear-gradient(135deg, #00d4ff 0%, #0284c7 100%);
    --gradient-card: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 100%);

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --stat-label: rgba(255, 255, 255, 0.9);
    --stat-value: #ffffff;
    --chart-text: #f1f5f9;

    /* Border & Shadow */
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --glow: 0 0 20px rgba(0, 212, 255, 0.3);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* Layout Container */
.app-container {
    display: flex;
    min-height: 100vh;
justify-content: flex-start !important;
flex-direction: column;
}

.mobile-header {
    display: none;
}

/* Sidebar Navigation */
.sidebar {
    width: 280px;
    background: var(--secondary-bg);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform var(--transition-normal);
}

.sidebar.active {
    transform: translateX(0) !important;
}

.sidebar-header {
    margin-bottom: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.logo-icon {
    font-size: 2rem;
}

.language-switcher {
    margin-top: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
}

.lang-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
    font-weight: 600;
}

.lang-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--glow);
}

.lang-btn:hover:not(.active) {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Navigation Menu */
.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
}

.nav-link:hover {
    background: var(--card-hover);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: var(--gradient-card);
    color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.nav-link.active::before {
    transform: scaleY(1);
}

.nav-icon {
    font-size: 1.25rem;
    min-width: 24px;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: var(--spacing-xl);
    background: var(--primary-bg);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
    }
}

/* Page Visibility Control */
.page {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.page.active {
    display: block;
    opacity: 1;
}

/* Page Header */
.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-description {
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.card-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.card-body {
    margin-bottom: var(--spacing-md);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-5 {
    grid-template-columns: repeat(5, 1fr);
}

/* Responsive Utilities */
.flex-responsive {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .flex-responsive {
        flex-direction: column;
    }
}

/* Stat Cards */
.stat-card {
    background: var(--secondary-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background: var(--card-hover);
}

/* Force white text for cards with vibrant backgrounds (gradients, inline styles, or solid accents) */
/* This rule is intentionally aggressive to override any theme-specific color settings */
.stat-card[style],
.stat-card[style*="background"],
.stat-card.bg-vibrant,
.stat-card.bg-purple,
.stat-card.bg-success,
.stat-card.bg-danger,
.stat-card.bg-info,
.light-mode .stat-card[style],
.light-mode .stat-card[style*="background"],
.light-mode .stat-card.bg-vibrant {
    border: none !important;
}

/* Very specific selectors to ensure white text always wins on custom backgrounds */
.stat-card[style] .stat-label,
.stat-card[style] .stat-value,
.stat-card[style] small,
.stat-card[style] *,
.stat-card.bg-vibrant .stat-label,
.stat-card.bg-vibrant .stat-value,
.stat-card.bg-vibrant small,
.stat-card[style*="background"] .stat-label,
.stat-card[style*="background"] .stat-value,
.stat-card[style*="background"] small,
.stat-card[style*="gradient"] .stat-label,
.stat-card[style*="gradient"] .stat-value,
.light-mode .stat-card[style] .stat-label,
.light-mode .stat-card[style] .stat-value,
.light-mode .stat-card[style] small,
.light-mode .stat-card[style*="background"] .stat-label,
.light-mode .stat-card[style*="background"] .stat-value {
    color: #ffffff !important;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2) !important;
    opacity: 1 !important;
}

.stat-card[style] .stat-label,
.stat-card.bg-vibrant .stat-label,
.light-mode .stat-card[style] .stat-label {
    opacity: 0.9 !important;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--stat-label);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--stat-value);
    margin-bottom: var(--spacing-xs);
}

.stat-change {
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

.stat-change.positive {
    color: var(--accent-success);
    background: rgba(16, 185, 129, 0.1);
}

.stat-change.negative {
    color: var(--accent-danger);
    background: rgba(239, 68, 68, 0.1);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    font-family: inherit;
}

/* Fix dropdown options visibility */
.form-select option {
    background: #1a2342;
    color: #f8fafc;
    padding: 0.5rem;
    font-weight: 500;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
    background: rgba(255, 255, 255, 0.08);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    box-shadow: var(--shadow-md), var(--glow);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.btn-outline:hover {
    background: var(--accent-primary);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: rgba(255, 255, 255, 0.03);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

tbody tr {
    transition: background var(--transition-fast);
}

.table-container tr:nth-child(even) {
    background: rgba(128, 128, 128, 0.05);
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.badge-info {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-primary);
}

/* Progress Bar */
.progress {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 999px;
    transition: width var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Charts Container */
.chart-container {
    position: relative;
    height: 300px;
    margin: var(--spacing-lg) 0;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

/* Sidebar Footer & Buttons */
.sidebar-footer {
    margin-top: auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.btn-sidebar-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1rem;
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    text-align: left;
    margin-bottom: var(--spacing-xs);
}

.btn-sidebar-action:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* Sidebar Toggle for Mobile */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1100;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

@media (max-width: 1024px) {
    .sidebar-toggle {
        display: block;
    }
}

/* Alert/Notification */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--accent-success);
    color: var(--accent-success);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--accent-warning);
    color: var(--accent-warning);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-success {
    color: var(--accent-success);
}

.text-danger {
    color: var(--accent-danger);
}

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

.text-muted {
    color: var(--text-muted);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.hidden {
    display: none;
}

.flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.align-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

/* Responsive Design */
/* Tablet (iPad, etc.) */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    /* Sidebar Toggle for Mobile */
    .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 20px;
        left: 20px;
        width: 45px;
        height: 45px;
        background: var(--accent-secondary);
        color: white;
        border: none;
        border-radius: 12px;
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 1100;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        transition: all var(--transition-normal);
    }

    .sidebar-toggle:active {
        transform: scale(0.9);
    }

    .page-header {
        margin-top: 0;
        padding-left: 0;
        text-align: center;
        margin-bottom: var(--spacing-lg);
    }

    .sidebar-header {
        padding-left: 50px;
        /* Space for the fixed toggle button when sidebar is open */
        margin-bottom: var(--spacing-lg);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-md);
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-5 {
        grid-template-columns: repeat(2, 1fr);
    }

    h1 {
        font-size: 2rem;
    }

    .page-title {
        font-size: 2rem;
    }

    /* Mobile Header for Branding Visibility */
    /* Mobile Header for Branding Visibility */
    .mobile-header {
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 45px;
        /* Match button height */
        margin-bottom: var(--spacing-xs);
        padding-left: 45px;
        /* Offset for visual centering relative to viewport, or keep 0 for absolute center */
        /* Actually, for perfect center, keep 0. If user wants it centered between button and edge, that's complex. 
           Standard is absolute center. Let's start with absolute center but ensure button doesn't overlap text. */
        padding-left: 0;
        margin-top: 5px;
        /* Align with button top: 20px - content padding */
    }

    .mobile-header h1 {
        font-size: 1.75rem;
        background: var(--gradient-primary);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 0;
        display: inline-block;
    }
}

/* Mobile (Phones) */
@media (max-width: 768px) {

    /* Stack all grids */
    .grid-2,
    .grid-3,
    .grid-4,
    .grid-5 {
        grid-template-columns: 1fr;
    }

    /* Reduce font sizes */
    h1,
    .page-title {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3,
    .card-title {
        font-size: 1.25rem;
    }

    .stat-value {
        font-size: 1.75rem;
    }

    /* Adjust spacing for mobile */
    .main-content {
        padding: var(--spacing-sm);
    }

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

    /* Make buttons touch-friendly (min 44px height) */
    .btn {
        padding: 1rem 1.25rem;
        font-size: 1rem;
        min-height: 44px;
    }

    .btn-sm {
        padding: 0.75rem 1rem;
        min-height: 40px;
    }

    /* Larger form inputs for better UX */
    .form-input,
    .form-select {
        padding: 1rem;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    /* Make nav links touch-friendly */
    .nav-link {
        padding: 1rem;
    }

    /* Adjust modal for mobile */
    .modal {
        width: 95%;
        padding: var(--spacing-lg);
        max-height: 85vh;
    }

    /* Table overflow scroll */
    .table-container {
        -webkit-overflow-scrolling: touch;
    }

    table {
        font-size: 0.875rem;
    }

    th,
    td {
        padding: 0.75rem 0.5rem;
    }

    /* Sidebar full width on mobile */
    .sidebar {
        width: 100%;
        max-width: 320px;
    }
}

/* Small phones */
@media (max-width: 480px) {

    h1,
    .page-title {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .card {
        padding: 1rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    /* Card header flex items */
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .card-header .btn {
        margin-top: var(--spacing-sm);
        width: 100%;
    }
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Global Footer */
.app-footer {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-md);
    margin-top: auto;
    width: 100%;
    z-index: 100;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-content p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-content a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    margin-left: var(--spacing-xs);
}

.footer-content a:hover {
    text-decoration: underline;
}

/* Auth Section in Sidebar */
.auth-section {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-md);
}

.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    color: #334155;
    border: 1px solid #e2e8f0;
    padding: 0.625rem 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-google:hover {
    background: #f8fafc;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.user-profile {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.btn-logout {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.btn-logout:hover {
    background: var(--accent-danger);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.btn-logout svg {
    transition: transform var(--transition-fast);
}

.btn-logout:hover svg {
    transform: translateX(2px);
}

/* --- STYLES CHO NÚT DONATE & MODAL --- */

/* 1. Nút bấm đẹp */
.btn-donate {
    background-color: #374151; /* Màu xám đậm */
    color: #F9FAFB;
    border: 1px solid #BB86FC; /* Viền tím */
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-donate:hover {
    background-color: #BB86FC; /* Hover chuyển sang tím */
    color: white;
}

/* 2. Nền mờ đằng sau (Overlay) */
.modal {
    display: none; /* Mặc định ẩn */
    position: fixed;
    z-index: 9999; /* Luôn nổi lên trên cùng */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8); /* Màu đen mờ */
    backdrop-filter: blur(4px); /* Làm mờ nền web phía sau */
}

/* 3. Hộp nội dung chính */
.modal-content {
    background-color: #1F2937; /* Màu nền Card tối */
    margin: 15% auto; /* Căn giữa dọc */
    padding: 25px;
    border: 1px solid #374151;
    width: 90%;
    max-width: 400px; /* Không quá to trên máy tính */
    border-radius: 12px;
    text-align: center;
    color: #E5E7EB;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    position: relative;
    animation: zoomIn 0.3s ease;
}

/* 4. Ảnh QR */
.qr-image {
    width: 200px;
    height: 200px;
    border-radius: 8px;
    margin: 15px 0;
    border: 2px solid #BB86FC;
}

/* 5. Nút đóng (X) */
.close-modal {
    color: #9CA3AF;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 15px;
    top: 5px;
}

.close-modal:hover {
    color: #EF4444; /* Hover màu đỏ */
}

/* Hiệu ứng hiện ra từ từ */
@keyframes zoomIn {
    from {transform: scale(0.8); opacity: 0;}
    to {transform: scale(1); opacity: 1;}
}