/* ==========================================================================
   DataCoin - Dashboard de finanzas personales
   Estilos generales: variables de tema, layout, componentes y responsive.
   ========================================================================== */

:root {
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    --color-bg: #f4f6fb;
    --color-surface: #ffffff;
    --color-surface-alt: #f0f2f8;
    --color-border: #e5e8f0;
    --color-text: #1a1d29;
    --color-text-muted: #6b7280;

    --color-brand: #6366f1;
    --color-brand-dark: #4f46e5;
    --color-income: #16a34a;
    --color-income-soft: #dcfce7;
    --color-expense: #ef4444;
    --color-expense-soft: #fee2e2;
    --color-neutral: #6366f1;

    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-md: 0 4px 14px rgba(16, 24, 40, 0.08);
    --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.12);

    --radius-md: 14px;
    --radius-lg: 20px;

    --transition: all 0.2s ease;
}

[data-theme="dark"] {
    --color-bg: #0f1117;
    --color-surface: #171a24;
    --color-surface-alt: #1e2230;
    --color-border: #2a2e3d;
    --color-text: #f1f2f6;
    --color-text-muted: #9ca3af;

    --color-income-soft: rgba(22, 163, 74, 0.16);
    --color-expense-soft: rgba(239, 68, 68, 0.16);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    transition: background 0.25s ease, color 0.25s ease;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Topbar ---------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 24px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
}

.brand__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
    color: white;
}

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

/* ---------- Botones ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 10px 16px;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-brand);
    color: white;
}
.btn-primary:hover { background: var(--color-brand-dark); }

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}
.btn-outline:hover { background: var(--color-surface-alt); }

.btn-icon {
    padding: 10px;
    border-radius: 10px;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text);
}
.btn-icon:hover { background: var(--color-border); }

.select, .input {
    font-family: inherit;
    font-size: 0.88rem;
    padding: 9px 12px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
}

/* ---------- Layout principal ---------- */

.page {
    padding: 28px 0 64px;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 32px 0 16px;
}

.section-title h2 {
    font-size: 1.05rem;
    margin: 0;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ---------- KPI cards ---------- */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.4s ease both;
}

.kpi-card__label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.kpi-card__value {
    font-size: 1.65rem;
    font-weight: 700;
    margin-top: 10px;
}

.kpi-card--income .kpi-card__value { color: var(--color-income); }
.kpi-card--expense .kpi-card__value { color: var(--color-expense); }
.kpi-card--balance.is-positive .kpi-card__value { color: var(--color-income); }
.kpi-card--balance.is-negative .kpi-card__value { color: var(--color-expense); }

.kpi-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.kpi-icon--income { background: var(--color-income-soft); color: var(--color-income); }
.kpi-icon--expense { background: var(--color-expense-soft); color: var(--color-expense); }
.kpi-icon--balance { background: rgba(99, 102, 241, 0.14); color: var(--color-brand); }
.kpi-icon--savings { background: rgba(245, 158, 11, 0.14); color: #f59e0b; }

/* ---------- Grid de graficos ---------- */

.chart-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 18px;
}

.chart-grid--full { grid-template-columns: 1fr; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.4s ease both;
}

.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.card__title {
    font-size: 0.95rem;
    font-weight: 700;
}

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

.chart-wrap {
    position: relative;
    height: 280px;
}

/* ---------- Reporte / narrativa ---------- */

.narrative-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
    color: white;
    padding: 18px 22px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    flex-wrap: wrap;
}

.narrative-banner p { margin: 0; opacity: 0.95; }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 17, 23, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
}

.modal {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    max-width: 560px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: 26px;
    box-shadow: var(--shadow-lg);
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.modal__title { font-size: 1.15rem; font-weight: 700; }

.narrative-list {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.narrative-list li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    font-size: 0.92rem;
    line-height: 1.5;
}

.narrative-list li svg { flex-shrink: 0; margin-top: 2px; color: var(--color-brand); }

.alert-item {
    background: var(--color-expense-soft);
    color: var(--color-expense);
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 0.85rem;
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

/* ---------- Filtros y tabla ---------- */

.filters-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.filters-bar .input { flex: 1 1 200px; }

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

table.tx-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    min-width: 640px;
}

table.tx-table th {
    text-align: left;
    padding: 10px 12px;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

table.tx-table th a { text-decoration: none; color: inherit; }

table.tx-table td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

table.tx-table tbody tr { transition: background 0.15s ease; }
table.tx-table tbody tr:hover { background: var(--color-surface-alt); }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.74rem;
    font-weight: 700;
}
.badge--income { background: var(--color-income-soft); color: var(--color-income); }
.badge--expense { background: var(--color-expense-soft); color: var(--color-expense); }

.amount--income { color: var(--color-income); font-weight: 600; }
.amount--expense { color: var(--color-expense); font-weight: 600; }

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}
.pagination a:hover { background: var(--color-surface-alt); }
.pagination .is-active { background: var(--color-brand); color: white; border-color: var(--color-brand); }

/* ---------- Estado vacio / importador ---------- */

.empty-state, .import-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
}

.import-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px;
    max-width: 480px;
    width: 100%;
    text-align: center;
}

.import-card__icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: rgba(99, 102, 241, 0.12);
    color: var(--color-brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}

.dropzone {
    border: 2px dashed var(--color-border);
    border-radius: 14px;
    padding: 28px 16px;
    margin: 20px 0;
    color: var(--color-text-muted);
    font-size: 0.88rem;
    transition: var(--transition);
}
.dropzone.is-dragover { border-color: var(--color-brand); background: var(--color-surface-alt); }

.form-message {
    text-align: left;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 0.86rem;
    margin-bottom: 16px;
}
.form-message--error { background: var(--color-expense-soft); color: var(--color-expense); }
.form-message--success { background: var(--color-income-soft); color: var(--color-income); }

/* ---------- Animaciones ---------- */

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .chart-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .kpi-grid { grid-template-columns: 1fr; }
    .container { padding: 0 16px; }
    .topbar__inner { padding: 12px 16px; }
    table.tx-table { min-width: 560px; }
    .narrative-banner { flex-direction: column; align-items: flex-start; }
}