/* ============================================
   Settlement Calculator — Design System
   Modern dark theme with glassmorphism
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --bg-primary: #f0f4f8;
    --bg-secondary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: rgba(255, 255, 255, 1);
    --bg-sidebar: rgba(255, 255, 255, 0.95);
    --bg-input: #ffffff;
    --bg-input-focus: #ffffff;

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-heading: #0f172a;

    --accent-primary: #0ea5e9;
    --accent-primary-rgb: 14, 165, 233;
    --accent-secondary: #38bdf8;
    --accent-glow: rgba(14, 165, 233, 0.3);

    --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);

    --gradient-primary: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
    --gradient-card: linear-gradient(135deg, rgba(14, 165, 233, 0.05) 0%, rgba(56, 189, 248, 0.02) 100%);
    --gradient-success: linear-gradient(135deg, #059669 0%, #34d399 100%);
    --gradient-danger: linear-gradient(135deg, #dc2626 0%, #f87171 100%);

    --border: rgba(14, 165, 233, 0.15);
    --border-light: rgba(14, 165, 233, 0.08);
    --border-hover: rgba(14, 165, 233, 0.4);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --sidebar-width: 260px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;
}

/* --- Dark Theme Overrides --- */
[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e24;
    --bg-card: rgba(30, 30, 36, 0.7);
    --bg-card-hover: rgba(45, 45, 52, 0.8);
    --bg-sidebar: rgba(22, 22, 26, 0.95);
    --bg-input: rgba(255, 255, 255, 0.05);
    --bg-input-focus: rgba(255, 255, 255, 0.08);

    --text-primary: #e8e8f0;
    --text-secondary: #9898b8;
    --text-muted: #6868a0;
    --text-heading: #ffffff;

    /* Using deep sky blue variants for dark mode as requested */
    --accent-primary: #38bdf8;
    --accent-primary-rgb: 56, 189, 248;
    --accent-secondary: #7dd3fc;
    --accent-glow: rgba(56, 189, 248, 0.3);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.sidebar-open {
    overflow: hidden;
}

/* Background subtle pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(14, 165, 233, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(14, 165, 233, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* --- Layout --- */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.sidebar-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle {
    padding: 4px;
    border-radius: 50%;
}

.sidebar-close {
    display: none;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--accent-primary);
    border-radius: 0 2px 2px 0;
    opacity: 0;
    transform: scaleY(0);
    transition: var(--transition);
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(108, 92, 231, 0.08);
}

.nav-item.active {
    color: var(--text-heading);
    background: rgba(108, 92, 231, 0.12);
}

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

.nav-item .material-icons-round {
    font-size: 20px;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-light);
}

.session-meta {
    display: grid;
    gap: 10px;
    margin-bottom: 12px;
}

.session-user {
    font-size: 0.74rem;
    color: var(--text-muted);
    line-height: 1.35;
}

.session-user strong {
    color: var(--text-primary);
    font-weight: 600;
}

.session-logout {
    justify-content: center;
    border: 1px solid var(--border);
    width: 100%;
}

.session-logout:hover {
    border-color: var(--border-hover);
}

.sidebar-footer p {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    border: 0;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 90;
}

.sidebar-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px 40px;
    min-height: 100vh;
    min-width: 0;
}

.mobile-toolbar {
    display: none;
}

.mobile-menu-btn {
    flex-shrink: 0;
}

.mobile-toolbar-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.mobile-toolbar-kicker {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.mobile-toolbar-copy strong {
    color: var(--text-heading);
    font-size: 1rem;
    line-height: 1.2;
}

/* --- Tab Content --- */
.tab-content {
    display: none;
    animation: fadeInUp 0.4s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Page Header --- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 28px;
    gap: 16px;
    flex-wrap: wrap;
}

.page-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.03em;
}

.page-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4px;
}

.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

#uploadProfileSelect,
#configProfileSelect {
    max-width: 100%;
}

#exportActions {
    width: 100%;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn .material-icons-round {
    font-size: 18px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: 0 2px 12px rgba(var(--accent-primary-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(var(--accent-primary-rgb), 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: var(--accent-secondary);
    border: 1px solid var(--border-hover);
}

.btn-outline:hover {
    background: rgba(var(--accent-primary-rgb), 0.1);
    border-color: var(--accent-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-sm .material-icons-round {
    font-size: 16px;
}

.btn-success {
    background: var(--gradient-success);
    color: #0a0a1a;
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 206, 201, 0.3);
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid rgba(255, 118, 117, 0.3);
}

.btn-danger:hover {
    background: var(--danger-bg);
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
    gap: 12px;
}

.card-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-heading);
}

.card-header h3 .material-icons-round {
    font-size: 20px;
    color: var(--accent-secondary);
}

.card-header-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card-header-hint .material-icons-round {
    font-size: 16px;
}

/* --- Upload Area --- */
.upload-card {
    margin-bottom: 24px;
}

.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    margin: 24px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--accent-primary);
    background: rgba(var(--accent-primary-rgb), 0.05);
}

.upload-area.drag-over {
    transform: scale(1.01);
}

.upload-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-card);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    position: relative;
}

.upload-icon-wrapper::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: pulse-ring 2.5s ease infinite;
}

@keyframes pulse-ring {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.1;
    }

    50% {
        transform: scale(1.15);
        opacity: 0.05;
    }
}

.upload-icon {
    font-size: 36px;
    color: var(--accent-secondary);
}

.upload-area h3 {
    font-size: 1.1rem;
    color: var(--text-heading);
    margin-bottom: 4px;
}

.upload-area p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.upload-btn {
    margin-top: 20px;
}

.upload-hint {
    margin-top: 12px !important;
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
}

/* --- File Info --- */
.file-info-card {
    margin-bottom: 24px;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    flex-wrap: wrap;
}

.file-icon {
    font-size: 28px;
    color: var(--accent-secondary);
}

.file-details {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 600;
    color: var(--text-heading);
    font-size: 0.9rem;
}

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

/* --- Column Mapping --- */
.mapping-card {
    margin-bottom: 24px;
    animation: fadeInUp 0.3s ease;
}

.mapping-form {
    padding: 24px;
}

.mapping-row {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.mapping-row label {
    min-width: 220px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.select-input {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    transition: var(--transition-fast);
    appearance: none;
    cursor: pointer;
}

.select-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.15);
}

.select-input option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.mapping-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

/* --- Summary Grid --- */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
    animation: fadeInUp 0.4s ease;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
}

.sc-total-txn::before {
    background: var(--gradient-primary);
}

.sc-total-amt::before {
    background: linear-gradient(90deg, #74b9ff, #0984e3);
}

.sc-total-sc::before {
    background: linear-gradient(90deg, #fdcb6e, #e17055);
}

.sc-total-settle::before {
    background: var(--gradient-success);
}

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

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

.sc-total-txn .summary-icon {
    background: rgba(var(--accent-primary-rgb), 0.15);
    color: var(--accent-secondary);
}

.sc-total-amt .summary-icon {
    background: rgba(116, 185, 255, 0.15);
    color: #74b9ff;
}

.sc-total-sc .summary-icon {
    background: rgba(253, 203, 110, 0.15);
    color: #fdcb6e;
}

.sc-total-settle .summary-icon {
    background: rgba(0, 206, 201, 0.15);
    color: #00cec9;
}

.summary-icon .material-icons-round {
    font-size: 24px;
}

.summary-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.summary-label {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.summary-value {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* --- Warning Card --- */
.warning-card {
    margin-bottom: 24px;
    border-color: rgba(253, 203, 110, 0.3) !important;
    background: var(--warning-bg) !important;
}

.warning-content {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 16px 20px;
}

.warning-icon {
    font-size: 24px;
    color: var(--warning);
    flex-shrink: 0;
    margin-top: 2px;
}

.warning-content strong {
    color: var(--warning);
    display: block;
    margin-bottom: 4px;
}

.warning-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* --- Tables --- */
.results-card,
.charges-card {
    margin-bottom: 24px;
}

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-search {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    transition: var(--transition-fast);
}

.table-search:focus-within {
    border-color: var(--accent-primary);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.1);
}

.table-search .material-icons-round {
    font-size: 18px;
    color: var(--text-muted);
}

.search-input {
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    outline: none;
    width: 180px;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table thead {
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table th {
    padding: 12px 16px;
    background: var(--bg-secondary);
    color: var(--text-heading);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: left;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.data-table tbody tr {
    transition: var(--transition-fast);
}

.data-table tbody tr:hover {
    background: rgba(var(--accent-primary-rgb), 0.04);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tfoot td {
    padding: 14px 16px;
    font-weight: 700;
    background: rgba(14, 165, 233, 0.1);
    color: var(--text-heading);
    border-top: 2px solid var(--border);
}

/* Amount alignment */
.data-table td.amount,
.data-table th.amount {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Status badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

/* --- Charges Table Specific --- */
.charges-table td {
    vertical-align: middle;
}

.charge-input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    width: 120px;
    transition: var(--transition-fast);
}

.charge-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.15);
}

.charge-select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
    appearance: none;
}

.charge-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.15);
}

.charge-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.mode-name {
    font-weight: 600;
    color: var(--text-heading);
}

.updated-time {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.action-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* --- Loading Overlay --- */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 26, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(108, 92, 231, 0.2);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 10000;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 420px;
    animation: toastIn 0.35s ease;
    transition: var(--transition);
}

.toast.removing {
    animation: toastOut 0.3s ease forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(40px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }

    to {
        opacity: 0;
        transform: translateX(40px);
    }
}

.toast .material-icons-round {
    font-size: 22px;
    flex-shrink: 0;
}

.toast-success {
    border-color: rgba(0, 206, 201, 0.3);
}

.toast-success .material-icons-round {
    color: var(--success);
}

.toast-error {
    border-color: rgba(255, 118, 117, 0.3);
}

.toast-error .material-icons-round {
    color: var(--danger);
}

.toast-info {
    border-color: rgba(116, 185, 255, 0.3);
}

.toast-info .material-icons-round {
    color: var(--info);
}

.toast-message {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(var(--accent-primary-rgb), 0.25);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--accent-primary-rgb), 0.4);
}

/* --- Responsive --- */
@media (max-width: 1200px) {
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .sidebar {
        width: min(320px, 86vw);
        transform: translateX(-100%);
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

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

    .sidebar-close {
        display: inline-flex;
    }

    .mobile-toolbar {
        display: flex;
        align-items: center;
        gap: 12px;
        position: sticky;
        top: 0;
        z-index: 40;
        margin-bottom: 20px;
        padding: 12px 14px;
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        background: rgba(255, 255, 255, 0.78);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: var(--shadow-sm);
    }

    [data-theme="dark"] .mobile-toolbar {
        background: rgba(18, 18, 18, 0.82);
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
    }

    .page-header {
        flex-direction: column;
        align-items: stretch;
        margin-bottom: 20px;
    }

    .page-header h2 {
        font-size: 1.45rem;
    }

    .header-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .header-actions > * {
        width: 100%;
    }

    .profile-selection {
        width: 100%;
        flex-wrap: wrap;
    }

    #uploadProfileSelect,
    #configProfileSelect {
        width: 100% !important;
    }

    #exportActions {
        align-items: stretch !important;
    }

    #exportActions > div {
        width: 100%;
    }

    #exportActions input {
        width: 100% !important;
    }

    #exportActions button {
        width: 100%;
        justify-content: center;
    }

    .upload-area {
        margin: 18px;
        padding: 42px 20px;
    }

    .upload-icon-wrapper {
        width: 68px;
        height: 68px;
    }

    .mapping-form {
        padding: 20px;
    }

    .mapping-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .mapping-row label {
        min-width: auto;
    }

    .mapping-actions {
        flex-direction: column-reverse;
    }

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

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

    .table-search,
    .search-input {
        width: 100%;
    }

    .file-info .btn {
        margin-left: auto;
    }

    .action-buttons,
    .action-buttons .btn,
    .charge-input,
    .charge-select {
        width: 100%;
    }

    #convReadyCard {
        padding: 20px !important;
    }

    #convReadyCard > div {
        flex-direction: column;
        align-items: stretch !important;
        gap: 14px !important;
    }

    #convReadyCard > div > div {
        min-width: 0 !important;
        width: 100%;
    }

    #convReadyCard button,
    #convPreviewCard > div:last-child .btn {
        width: 100%;
        justify-content: center;
    }

    #convPreviewCard > div:last-child {
        flex-direction: column-reverse !important;
        align-items: stretch !important;
    }

    #convResultCard {
        padding: 18px !important;
    }

    #convResultCard > div {
        align-items: flex-start !important;
    }

    .toast-container {
        left: 12px;
        right: 12px;
        bottom: 12px;
    }

    .toast {
        min-width: 0;
        max-width: none;
        width: 100%;
    }
}

@media (max-width: 600px) {
    .summary-grid {
        grid-template-columns: 1fr;
    }

    .main-content {
        padding: 12px;
    }

    .mobile-toolbar {
        margin-bottom: 16px;
        padding: 10px 12px;
    }

    .summary-card {
        padding: 16px;
    }

    .results-card .table-wrapper,
    .charges-card .table-wrapper,
    #convPreviewCard .table-wrapper {
        overflow: visible;
        padding: 16px;
    }

    .data-table {
        display: block;
    }

    .data-table thead,
    .data-table tfoot {
        display: none;
    }

    .data-table tbody {
        display: grid;
        gap: 12px;
    }

    .data-table tbody tr {
        display: block;
        padding: 14px 16px;
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        background: rgba(var(--accent-primary-rgb), 0.04);
    }

    .data-table tbody tr:hover {
        background: rgba(var(--accent-primary-rgb), 0.07);
    }

    .data-table td {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        gap: 12px;
        padding: 8px 0;
        font-size: 0.82rem;
        border-bottom: 1px solid var(--border-light);
        word-break: break-word;
        overflow-wrap: anywhere;
    }

    .data-table td:last-child {
        border-bottom: none;
    }

    .data-table td::before {
        content: attr(data-label);
        flex: 0 0 44%;
        max-width: 44%;
        color: var(--text-muted);
        font-size: 0.68rem;
        font-weight: 700;
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    .data-table td[data-label=""]::before {
        content: none;
    }

    .data-table td.amount {
        text-align: left;
    }

    .badge {
        margin-left: auto;
    }

}