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

:root {
    --bg: #f0f2f5;
    --surface: #ffffff;
    --text: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --danger: #ef4444;
    --success: #10b981;
    --vienna: #6366f1;
    --vienna-bg: #eef2ff;
    --brazil: #059669;
    --brazil-bg: #ecfdf5;
    --virtual: #8b5cf6;
    --virtual-bg: #f5f3ff;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === Layout === */
.app {
    max-width: 1140px;
    margin: 0 auto;
    padding: 32px 24px 80px;
}

/* === Header === */
.header {
    margin-bottom: 32px;
}

.header-inner {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 32px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text);
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 4px;
    font-weight: 400;
}

/* === Dashboard === */
.dashboard {
    margin-bottom: 28px;
}

.dashboard-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.dashboard-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 22px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

/* Grand total card */
.card-grand {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border: none;
    color: #fff;
}

.card-grand .card-label {
    color: rgba(255,255,255,0.7);
}

.card-grand .card-value {
    font-size: 1.85rem;
    color: #fff;
}

.card-grand .card-meta {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    margin-top: 8px;
}

/* Country cards */
.card-country {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.card-vienna {
    border-left: 3px solid var(--vienna);
}

.card-brazil {
    border-left: 3px solid var(--brazil);
}

.card-virtual {
    border-left: 3px solid var(--virtual);
}

.card-virtual .card-flag {
    background: var(--virtual-bg);
    color: var(--virtual);
}

.card-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 20px;
    border-radius: 3px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}

.card-vienna .card-flag {
    background: var(--vienna-bg);
    color: var(--vienna);
}

.card-brazil .card-flag {
    background: var(--brazil-bg);
    color: var(--brazil);
}

.card-country .card-value {
    font-size: 1.35rem;
}

/* Category cards */
.card-category {
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: box-shadow 0.15s;
}

.card-category:hover {
    box-shadow: var(--shadow-md);
}

.card-icon {
    color: var(--text-muted);
    margin-bottom: 4px;
    line-height: 1;
}

.card-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.01em;
}

.card-value-sm {
    font-size: 1.05rem;
    font-weight: 600;
}

.muted {
    color: var(--text-muted) !important;
    font-weight: 400 !important;
    font-size: 0.8rem !important;
}

/* === Form === */
.form-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 28px;
    box-shadow: var(--shadow);
}

.section-header {
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-light);
}

.section-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.form-group-wide {
    grid-column: span 2;
}

.form-group label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

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

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.form-group input.error,
.form-group select.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.08);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 9px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 2px 6px rgba(37, 99, 235, 0.3);
}

.btn-primary:active {
    transform: translateY(1px);
}

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

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

.btn-sm {
    padding: 6px 14px;
    font-size: 0.78rem;
}

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

/* === Table Section === */
.table-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.table-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.filters {
    display: flex;
    gap: 8px;
}

.filters select {
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
}

.filters select:focus {
    outline: none;
    border-color: var(--primary);
}

.table-wrapper {
    overflow-x: auto;
}

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

thead th {
    text-align: left;
    padding: 10px 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    user-select: none;
}

tbody td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
}

tbody tr {
    transition: background 0.1s;
}

tbody tr:hover {
    background: #fafbfc;
}

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

td.amount {
    font-weight: 600;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    color: var(--text);
}

td.item-cell {
    font-weight: 500;
}

td.center {
    text-align: center;
}

td.hash {
    font-family: "SF Mono", "Fira Code", "Cascadia Code", "Courier New", monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

td a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

td a:hover {
    text-decoration: underline;
}

/* === Badge === */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

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

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

/* === Row Action Buttons === */
.actions-cell {
    white-space: nowrap;
}

.btn-edit,
.btn-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    line-height: 1;
    transition: all 0.15s;
    opacity: 0;
    vertical-align: middle;
}

.btn-delete {
    font-size: 1.15rem;
}

tbody tr:hover .btn-edit,
tbody tr:hover .btn-delete {
    opacity: 1;
}

.btn-edit:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.btn-delete:hover {
    background: #fef2f2;
    color: var(--danger);
}

/* === Edit Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: 0 8px 40px rgba(0,0,0,0.18);
    width: 100%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 28px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.modal-close:hover {
    background: #fef2f2;
    color: var(--danger);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 4px;
}

.modal .form-grid {
    margin-bottom: 20px;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 48px 0;
    font-size: 0.9rem;
}

/* === Toast === */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    z-index: 1000;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-success {
    background: #065f46;
}

.toast-error {
    background: #991b1b;
}

/* === Login === */
.login-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 380px;
    text-align: center;
}

.login-box h1 {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 4px;
}

.login-box .subtitle {
    margin-bottom: 28px;
}

.login-box .form-group {
    text-align: left;
    margin-bottom: 16px;
}

.login-error {
    color: var(--danger);
    font-size: 0.82rem;
    min-height: 20px;
    margin-bottom: 8px;
}

/* === Responsive === */
@media (max-width: 768px) {
    .app {
        padding: 16px 14px 48px;
    }

    .header-inner {
        padding: 20px;
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .dashboard-top {
        grid-template-columns: 1fr;
    }

    .dashboard-row {
        grid-template-columns: 1fr 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-group-wide {
        grid-column: span 1;
    }

    .table-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .table-actions {
        width: 100%;
        flex-wrap: wrap;
    }

    .filters {
        flex: 1;
        width: 100%;
    }

    .filters select {
        flex: 1;
    }

    .card-value {
        font-size: 1.25rem;
    }

    .card-grand .card-value {
        font-size: 1.5rem;
    }

    .btn-edit,
    .btn-delete {
        opacity: 1;
    }

    .modal {
        max-width: 100%;
        margin: 12px;
        padding: 20px;
    }

    .modal .form-grid {
        grid-template-columns: 1fr;
    }

    .modal .form-group-wide {
        grid-column: span 1;
    }

    .login-box {
        margin: 16px;
        padding: 28px;
    }
}

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