/* ==========================================================================
   NPHK SALES AUDIT - MODERN ENTERPRISE STYLESHEET
   ========================================================================== */

:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-khmer: 'Kantumruy Pro', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Light Theme Palette */
    --bg-base: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-surface-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --border-subtle: #cbd5e1;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --brand-primary: #2563eb;
    --brand-primary-hover: #1d4ed8;
    --brand-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);

    --success-bg: #ecfdf5;
    --success-text: #059669;
    --success-border: #a7f3d0;
    --success-solid: #10b981;

    --danger-bg: #fef2f2;
    --danger-text: #dc2626;
    --danger-border: #fecaca;
    --danger-solid: #ef4444;

    --warning-bg: #fffbeb;
    --warning-text: #d97706;
    --warning-border: #fde68a;
    --warning-solid: #f59e0b;

    --purple-bg: #f5f3ff;
    --purple-text: #7c3aed;
    --purple-border: #ddd6fe;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark Theme Palette */
[data-theme="dark"] {
    --bg-base: #0b1120;
    --bg-surface: #111827;
    --bg-surface-elevated: #1f2937;
    --bg-surface-subtle: #1e293b;
    --border-color: #374151;
    --border-subtle: #4b5563;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;

    --brand-primary: #3b82f6;
    --brand-primary-hover: #60a5fa;
    --brand-gradient: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);

    --success-bg: rgba(16, 185, 129, 0.15);
    --success-text: #34d399;
    --success-border: rgba(16, 185, 129, 0.3);

    --danger-bg: rgba(239, 68, 68, 0.15);
    --danger-text: #f87171;
    --danger-border: rgba(239, 68, 68, 0.3);

    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-text: #fbbf24;
    --warning-border: rgba(245, 158, 11, 0.3);

    --purple-bg: rgba(124, 58, 237, 0.15);
    --purple-text: #a78bfa;
    --purple-border: rgba(124, 58, 237, 0.3);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.app-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-group {
    display: flex;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    text-decoration: none;
    color: inherit;
}

.logo-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
    flex-shrink: 0;
    border: 2px solid rgba(220, 38, 38, 0.15);
    background: #ffffff;
}

.brand-logo-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.brand-text h1 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-text h1 span {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* Top App Navigation Menu */
.app-nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-surface-subtle);
    padding: 0.35rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
}

.nav-item svg {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-surface);
}

.nav-item:hover svg {
    color: var(--brand-primary);
}

.nav-item.active {
    background: var(--bg-surface);
    color: var(--brand-primary);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.nav-item.active svg {
    color: var(--brand-primary);
}

.single-dropzone-container {
    margin-bottom: 1.5rem;
}

.single-dropzone-container .dropzone-box {
    padding: 3rem 2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--success-text);
    background: var(--success-bg);
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
    border: 1px solid var(--success-border);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success-solid);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.icon-btn {
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.lang-btn {
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.35rem 0.75rem;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.lang-btn:hover {
    background: var(--border-color);
    border-color: var(--border-subtle);
}

.lang-btn .lang-flag {
    font-size: 1.1rem;
    line-height: 1;
}

.lang-btn .lang-label {
    letter-spacing: 0.5px;
}

/* Khmer Typography Settings */
[data-lang="kh"], html[lang="kh"] body {
    font-family: var(--font-khmer);
    line-height: 1.6;
}

[data-lang="kh"] h1, [data-lang="kh"] h2, [data-lang="kh"] h3, [data-lang="kh"] h4 {
    font-family: var(--font-khmer);
    font-weight: 700;
    letter-spacing: normal;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0 3rem;
}

/* Card Container */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.75rem;
    margin-bottom: 2rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.card-header h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.card-header p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Dropzones Grid */
.dropzones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.dropzone-box {
    border: 2px dashed var(--border-subtle);
    border-radius: var(--radius-md);
    background-color: var(--bg-surface-subtle);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    position: relative;
}

.dropzone-box:hover, .dropzone-box.dragover {
    border-color: var(--brand-primary);
    background-color: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
}

.dropzone-box.file-loaded {
    border-color: var(--success-solid);
    border-style: solid;
    background-color: var(--success-bg);
}

.dropzone-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-primary);
}

.dropzone-box h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.dropzone-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.dropzone-hint code {
    background-color: var(--border-color);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.file-badge {
    margin-top: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--success-border);
    padding: 0.4rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    color: var(--success-text);
    font-weight: 500;
}

.remove-file-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0 0.25rem;
}

.remove-file-btn:hover {
    color: var(--danger-solid);
}

/* Controls Panel */
.controls-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.25rem;
    background-color: var(--bg-surface-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .controls-panel {
        grid-template-columns: 1fr;
    }
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.currency-selector-group {
    display: flex;
    gap: 0.5rem;
}

.currency-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.currency-symbol {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--bg-surface-subtle);
    font-weight: 700;
    font-size: 0.8rem;
}

.currency-btn:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.currency-btn.active {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.currency-btn.active .currency-symbol {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff;
}

.input-with-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.input-with-buttons input {
    width: 110px;
    padding: 0.5rem 0.75rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.quick-buttons {
    display: flex;
    gap: 0.35rem;
}

.chip-btn {
    padding: 0.4rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.chip-btn:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.chip-btn.active {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: white;
}

.switch-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.switch-label {
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.switch-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.switch-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 46px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--border-subtle);
    transition: 0.25s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.25s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--brand-primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* Buttons */
.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--brand-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.spinner-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem 3rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    margin: 0 auto 1.25rem;
    animation: spin 0.8s linear infinite;
}

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

/* Alert Banner */
.alert-banner {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}

.alert-error {
    background-color: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger-text);
}

.alert-icon {
    font-size: 1.5rem;
}

.alert-content h4 {
    font-size: 0.95rem;
    font-weight: 700;
}

.alert-content p {
    font-size: 0.85rem;
}

.alert-close-btn {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: inherit;
    cursor: pointer;
}

/* Results Section */
.status-banner {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.status-badge.clean {
    background-color: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.status-badge.discrepancies {
    background-color: var(--danger-bg);
    color: var(--danger-text);
    border: 1px solid var(--danger-border);
}

.status-info h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.status-info p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* KPI Metric Cards Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.kpi-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.icon-blue { background: rgba(37, 99, 235, 0.1); }
.icon-green { background: var(--success-bg); }
.icon-red { background: var(--danger-bg); }
.icon-amber { background: var(--warning-bg); }
.icon-purple { background: var(--purple-bg); }

.kpi-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
}

.kpi-amount {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    margin: 0.15rem 0;
}

.kpi-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: block;
}

/* Detail Card & Tabs */
.detail-card {
    padding: 0;
    overflow: hidden;
}

.tabs-header {
    background-color: var(--bg-surface-subtle);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.tabs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.15s;
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: var(--bg-surface);
}

.tab-btn.active {
    background-color: var(--bg-surface);
    color: var(--brand-primary);
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.tab-badge {
    padding: 0.15rem 0.45rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
}

.badge-red { background: var(--danger-bg); color: var(--danger-text); }
.badge-amber { background: var(--warning-bg); color: var(--warning-text); }
.badge-purple { background: var(--purple-bg); color: var(--purple-text); }
.badge-green { background: var(--success-bg); color: var(--success-text); }

.table-search input {
    padding: 0.45rem 0.875rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 220px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Data Table */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    max-height: 520px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    text-align: left;
}

.data-table th {
    background-color: var(--bg-surface-subtle);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.data-table tbody tr:hover {
    background-color: var(--bg-surface-subtle);
}

.data-table .num-cell {
    font-family: var(--font-primary);
    font-variant-numeric: tabular-nums;
    font-weight: 500;
}

.text-danger { color: var(--danger-text) !important; font-weight: 600; }
.text-success { color: var(--success-text) !important; font-weight: 600; }

.pill-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

/* Footer */
.app-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* Responsive Media Queries */
@media (max-width: 900px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .app-nav-menu {
        width: 100%;
        justify-content: center;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 640px) {
    .app-nav-menu {
        flex-direction: column;
        width: 100%;
    }

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