/* css/dashboard.css */

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --border-hover: #475569;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --info: #0ea5e9;
    --info-bg: rgba(14, 165, 233, 0.1);
    
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Utility Components */
a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--accent-hover);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary {
    background-color: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover {
    background-color: var(--border-hover);
    color: #fff;
}
.btn-danger {
    background-color: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn-danger:hover {
    background-color: var(--danger);
    color: #fff;
}
.btn-success {
    background-color: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.btn-success:hover {
    background-color: var(--success);
    color: #fff;
}
.btn-block {
    display: flex;
    width: 100%;
}
.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
    border-radius: 6px;
}

/* Alert Styling */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    line-height: 1.4;
}
.alert-danger {
    background-color: var(--danger-bg);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.alert-success {
    background-color: var(--success-bg);
    color: #a7f3d0;
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.alert-warning {
    background-color: var(--warning-bg);
    color: #fde68a;
    border: 1px solid rgba(245, 158, 11, 0.2);
}
.alert-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

/* ------------------- LOGIN STYLING ------------------- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #0b0f19;
    position: relative;
    padding: 20px;
}

.login-bg-glow-1, .login-bg-glow-2 {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}
.login-bg-glow-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    top: -50px;
    left: -50px;
}
.login-bg-glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #0ea5e9 0%, transparent 70%);
    bottom: -100px;
    right: -100px;
}

.login-container {
    width: 100%;
    max-width: 440px;
    z-index: 10;
}

.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--glass-shadow);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}
.login-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.logo-icon {
    color: var(--accent);
}
.login-header h2 {
    font-size: 1.75rem;
    color: #fff;
    font-weight: 600;
    margin-bottom: 8px;
}
.login-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-form .form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.input-wrapper {
    position: relative;
}
.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
}
.input-wrapper input, .input-wrapper textarea, .input-wrapper select {
    width: 100%;
    padding: 12px 14px 12px 42px;
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}
.input-wrapper input:focus, .input-wrapper textarea:focus, .input-wrapper select:focus {
    border-color: var(--accent);
    background-color: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 4px var(--accent-glow);
}
.input-wrapper input:focus + .input-icon,
.input-wrapper select:focus + .input-icon {
    color: var(--accent);
}

.login-footer {
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
}
.setup-notice {
    background-color: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: #c7d2fe;
    font-size: 0.85rem;
    padding: 12px;
    border-radius: var(--radius-sm);
    text-align: center;
    line-height: 1.5;
}
.credential-code {
    background-color: rgba(0, 0, 0, 0.3);
    padding: 2px 6px;
    border-radius: 4px;
    color: #818cf8;
    font-family: monospace;
    font-size: 0.9rem;
}

/* ------------------- DASHBOARD CONTAINER ------------------- */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: var(--transition);
}
.sidebar-brand {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}
.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}
.sidebar-nav {
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}
.nav-item:hover, .nav-item.active {
    color: #fff;
    background-color: var(--bg-tertiary);
}
.nav-item.active {
    background-color: var(--accent);
    box-shadow: 0 4px 12px var(--accent-glow);
}
.nav-item svg {
    flex-shrink: 0;
}
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}
.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.content-header {
    height: 70px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.page-title h1 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-primary);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.content-body {
    padding: 30px;
    flex-grow: 1;
}

/* Analytics Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.metric-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--card-shadow);
}
.metric-info h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-weight: 500;
}
.metric-info .value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}
.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.metric-icon.indigo {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent);
}
.metric-icon.emerald {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}
.metric-icon.amber {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}
.metric-icon.sky {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--info);
}

/* Table Card / Container */
.data-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    margin-bottom: 30px;
}
.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.card-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}
.table-filters {
    display: flex;
    align-items: center;
    gap: 12px;
}
.search-input-wrapper {
    position: relative;
}
.search-input-wrapper input {
    padding: 8px 12px 8px 36px;
    font-size: 0.9rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    outline: none;
    width: 220px;
    transition: var(--transition);
}
.search-input-wrapper input:focus {
    border-color: var(--accent);
    width: 280px;
}
.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Responsive Table */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}
.table-custom {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}
.table-custom th, .table-custom td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}
.table-custom th {
    background-color: rgba(15, 23, 42, 0.3);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}
.table-custom tbody tr {
    transition: var(--transition);
}
.table-custom tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.invoice-number-col {
    font-weight: 600;
    color: var(--text-primary);
}
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 50px;
    text-transform: uppercase;
}
.status-badge.paid {
    background-color: var(--success-bg);
    color: var(--success);
}
.status-badge.pending {
    background-color: var(--warning-bg);
    color: var(--warning);
}
.status-badge.overdue {
    background-color: var(--danger-bg);
    color: var(--danger);
}
.actions-cell {
    display: flex;
    gap: 8px;
    align-items: center;
}
.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    padding: 0;
    border: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}
.btn-icon:hover {
    color: #fff;
    background-color: var(--border-hover);
    border-color: var(--text-muted);
}
.btn-icon.delete:hover {
    background-color: var(--danger-bg);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}
.btn-icon.check:hover {
    background-color: var(--success-bg);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.3);
}

.table-empty {
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
}
.table-empty svg {
    margin-bottom: 12px;
    color: var(--text-muted);
}

/* ------------------- SETTINGS PAGE STYLING ------------------- */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 30px;
}
@media (max-width: 900px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
}
.settings-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}
.settings-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.settings-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--card-shadow);
}
.settings-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
@media (max-width: 600px) {
    .settings-form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}
.settings-card .form-group {
    margin-bottom: 24px;
}
.settings-card .form-group label {
    margin-bottom: 6px;
    font-size: 0.8rem;
}
.form-input-simple, .form-textarea-simple, .form-select-simple {
    width: 100%;
    padding: 10px 14px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}
.form-input-simple:focus, .form-textarea-simple:focus, .form-select-simple:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-textarea-simple {
    resize: vertical;
    min-height: 80px;
}

/* Logo Upload Style */
.logo-upload-container {
    display: flex;
    align-items: center;
    gap: 20px;
}
.logo-preview-box {
    width: 120px;
    height: 80px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-primary);
    border: 1px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.logo-preview-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.logo-upload-btn-wrapper {
    position: relative;
    overflow: hidden;
    display: inline-block;
}
.logo-upload-btn-wrapper input[type=file] {
    font-size: 100px;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
}

/* ------------------- EDITOR PAGE STYLING ------------------- */
.editor-page-body {
    height: 100vh;
    overflow: hidden;
    background-color: var(--bg-primary);
}
.editor-layout {
    display: flex;
    height: calc(100vh - 70px);
    overflow: hidden;
}
.editor-sidebar {
    width: 50%;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-width: 480px;
}
.editor-preview-pane {
    width: 50%;
    background-color: var(--bg-primary);
    height: 100%;
    padding: 24px;
    display: flex;
    justify-content: center;
    overflow-y: auto;
    position: relative;
}
@media (max-width: 1024px) {
    .editor-page-body {
        height: auto !important;
        overflow: auto !important;
    }
    .editor-layout {
        flex-direction: column;
        height: auto;
        overflow: visible;
    }
    .editor-sidebar {
        width: 100%;
        height: auto;
        min-width: 0;
    }
    .editor-form-scroll {
        overflow-y: visible;
    }
    .editor-preview-pane {
        width: 100%;
        height: 600px;
        overflow-y: auto;
    }
}

.editor-form-scroll {
    flex-grow: 1;
    overflow-y: auto;
    padding: 30px;
}
.editor-actions-bar {
    height: 75px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.editor-section {
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 24px;
}
.editor-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.editor-section-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-left: 3px solid var(--accent);
    padding-left: 10px;
}

/* Items list table in editor */
.editor-items-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}
.editor-items-table th {
    padding: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
}
.editor-items-table td {
    padding: 6px 4px;
    vertical-align: middle;
}
.editor-items-table input {
    width: 100%;
    padding: 8px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
}
.editor-items-table input:focus {
    border-color: var(--accent);
}
.col-drag { width: 30px; text-align: center; }
.col-desc { width: 45%; }
.col-qty { width: 12%; }
.col-price { width: 15%; }
.col-discount { width: 12%; }
.col-tax { width: 12%; }
.col-delete { width: 40px; text-align: center; }

/* Dynamic layout of iframe */
.preview-container {
    width: 100%;
    max-width: 820px; /* template width scale */
    background-color: #fff;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    height: 1100px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}
.preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #fff;
}

.preview-overlay-info {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: rgba(15, 23, 42, 0.85);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.75rem;
    padding: 6px 12px;
    border-radius: 20px;
    pointer-events: none;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 6px;
    backdrop-filter: blur(4px);
}
.preview-overlay-info span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success);
    display: inline-block;
    box-shadow: 0 0 8px var(--success);
}

/* Column configurations hiding rules for editor table */
.hide-col-qty .col-qty { display: none !important; }
.hide-col-price .col-price { display: none !important; }
.hide-col-discount .col-discount { display: none !important; }
.hide-col-tax .col-tax { display: none !important; }

/* Mobile Toggle Bar */
.mobile-top-bar {
    display: none;
    height: 60px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 999;
}
.mobile-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}
.btn-icon-mobile {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: 4px;
}
.btn-icon-mobile:hover {
    background-color: var(--bg-tertiary);
}

.sidebar-mobile-close {
    display: none;
}

@media (max-width: 768px) {
    .dashboard-layout {
        flex-direction: column;
        min-height: auto;
    }
    .mobile-top-bar {
        display: flex;
    }
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        z-index: 1001;
        transform: translateX(-100%);
        box-shadow: var(--glass-shadow);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-mobile-close {
        display: flex;
        justify-content: flex-end;
        padding: 16px 20px 0 20px;
    }
    
    /* Overlay background when sidebar is open */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(15, 23, 42, 0.65);
        backdrop-filter: blur(4px);
        z-index: 1000;
    }
    .sidebar-overlay.active {
        display: block;
    }
    
    .main-content {
        padding: 0;
    }
    .content-header {
        padding: 0 16px;
        height: auto;
        padding-top: 16px;
        padding-bottom: 8px;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        background-color: transparent;
        border-bottom: none;
    }
    .content-body {
        padding: 16px;
    }
    
    /* Metrics Grid columns */
    .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    /* Table Responsive wrapping */
    .table-custom {
        display: block;
        width: 100%;
        overflow-x: auto;
        white-space: nowrap;
    }
    .table-responsive {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Settings Grid Adjustments */
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .settings-card {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}

/* Light Theme Variables */
.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.15);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #cbd5e1;
    --border-hover: #94a3b8;
    
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.05);
}

/* Ensure active/hover nav items look clean in light theme */
.light-theme .nav-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}
.light-theme .nav-item.active {
    color: #fff;
    background-color: var(--accent);
}

/* Light Theme colorful metrics cards matching reference image */
.light-theme .metric-card.card-total-invoiced {
    background-color: #fff7f5;
    border-color: #ffe4d6;
}
.light-theme .metric-card.card-total-invoiced .metric-icon {
    background-color: #f97316; /* solid orange */
    color: #ffffff;
}

.light-theme .metric-card.card-total-paid {
    background-color: #f0fdf4;
    border-color: #dcfce7;
}
.light-theme .metric-card.card-total-paid .metric-icon {
    background-color: #10b981; /* solid green */
    color: #ffffff;
}

.light-theme .metric-card.card-outstanding {
    background-color: #fef2f2;
    border-color: #fee2e2;
}
.light-theme .metric-card.card-outstanding .metric-icon {
    background-color: #ef4444; /* solid red */
    color: #ffffff;
}

.light-theme .metric-card.card-invoices-count {
    background-color: #f0f9ff;
    border-color: #e0f2fe;
}
.light-theme .metric-card.card-invoices-count .metric-icon {
    background-color: #0ea5e9; /* solid blue */
    color: #ffffff;
}

/* Theme Switch UI Styles */
.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 44px;
}
.theme-switch input {
    display: none;
}
.theme-switch .slider {
    background-color: var(--bg-tertiary);
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border: 1px solid var(--border-color);
}
.theme-switch .slider:before {
    background-color: #fff;
    bottom: 2px;
    content: "";
    height: 18px;
    left: 2px;
    position: absolute;
    transition: .4s;
    width: 18px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.theme-switch input:checked + .slider {
    background-color: var(--accent);
    border-color: var(--accent-hover);
}
.theme-switch input:checked + .slider:before {
    transform: translateX(20px);
}
.theme-switch .slider.round {
    border-radius: 34px;
}
.theme-switch .slider.round:before {
    border-radius: 50%;
}

/* Premium Theme Toggle Switch */
.theme-switch-premium {
    display: inline-block;
    cursor: pointer;
    position: relative;
    user-select: none;
    vertical-align: middle;
}
.theme-switch-track {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 76px;
    height: 36px;
    background-color: #1e293b; /* default dark mode track */
    border-radius: 18px;
    position: relative;
    padding: 0 10px;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}
/* Track Icons - faint outlines */
.track-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b; /* slate-500 */
    transition: opacity 0.2s ease;
}
.theme-switch-thumb {
    width: 30px;
    height: 30px;
    background: #ffffff; /* knob color */
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 43px; /* default dark mode (right position) */
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease, box-shadow 0.3s ease;
}
/* Thumb Icons */
.thumb-icon-sun {
    display: none;
    color: #f59e0b; /* Golden sun color */
}
.thumb-icon-moon {
    display: flex;
    color: #4f46e5; /* Indigo/blue moon color */
}
/* Toggled States for Checkbox */
/* Checkbox CHECKED = LIGHT MODE */
#checkbox-theme-toggle:checked + .theme-switch-track {
    background-color: #cbd5e1; /* slate-300 light mode track */
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.08);
}
#checkbox-theme-toggle:checked + .theme-switch-track .theme-switch-thumb {
    transform: translateX(-40px); /* slide left */
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.06);
}
/* Swap active icons inside thumb */
#checkbox-theme-toggle:checked + .theme-switch-track .thumb-icon-sun {
    display: flex;
}
#checkbox-theme-toggle:checked + .theme-switch-track .thumb-icon-moon {
    display: none;
}
/* Control visibility of track icons (fade out under knob) */
#checkbox-theme-toggle:checked + .theme-switch-track .track-icon-sun {
    opacity: 0; /* hidden under the knob */
}
#checkbox-theme-toggle:not(:checked) + .theme-switch-track .track-icon-moon {
    opacity: 0; /* hidden under the knob */
}
/* Hover effects for premium look */
.theme-switch-premium:hover .theme-switch-thumb {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}
#checkbox-theme-toggle:checked:hover + .theme-switch-track .theme-switch-thumb {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.16);
}

/* Light Theme overrides for edit/preview container */
.light-theme .preview-container {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
    border-color: #cbd5e1;
}

/* Light Theme overrides for tables */
.light-theme .table-custom th {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}
.light-theme .table-custom tbody tr:hover {
    background-color: var(--bg-tertiary);
}

/* Modal Overlay Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 15, 25, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    width: 90%;
    max-width: 500px;
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    animation: fadeInScale 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}
.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}
.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}
.modal-close:hover {
    color: var(--text-primary);
}

/* Light mode override for modal shadow */
.light-theme .modal-card {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}