:root {
    --bg-main: #121212;
    --bg-card: #1c1c1c;
    --bg-hover: #2a2a2a;
    --border: #333;
    --primary: #10b981; /* Green matching logo */
    --primary-hover: #059669;
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --red: #f87171;
    --green: #4ade80;
    --radius: 8px;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-light);
    line-height: 1.5;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.nav-tabs {
    display: flex;
    gap: 20px;
    padding: 0 30px;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
}

.nav-tab {
    padding: 15px 5px;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.nav-tab:hover {
    color: var(--text-light);
}

.nav-tab.active {
    color: var(--bg-main);
    background-color: var(--primary);
    border-radius: 20px;
    padding: 5px 15px;
    margin: 10px 0;
    border-bottom: none;
    font-weight: bold;
}

.container {
    padding: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.view-section {
    display: none;
    animation: fadeIn 0.3s;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid var(--border);
    margin-bottom: 20px;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.summary-cards .card {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.summary-cards h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.amount {
    font-size: 1.8rem;
    font-weight: bold;
}

.text-red { color: var(--red); }
.text-green { color: var(--green); }

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

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-main);
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline:hover {
    background-color: var(--bg-hover);
    color: var(--text-light);
}

.filters-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

input, select {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    color: var(--text-light);
    padding: 10px;
    border-radius: 4px;
    width: 100%;
    outline: none;
}

input:focus, select:focus {
    border-color: var(--primary);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th {
    text-align: left;
    padding: 15px;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 15px;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

tr:hover td {
    background-color: var(--bg-hover);
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px;
    transition: color 0.2s;
}

.action-btn:hover {
    color: var(--primary);
}
.action-btn.delete:hover {
    color: var(--red);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-card);
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius);
    padding: 25px;
    border: 1px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--text-light);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Categorias grid */
.cat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.cat-list {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 15px;
}

.cat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border);
}
.cat-item:last-child {
    border-bottom: none;
}

/* Cuentas grid */
.cuentas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

/* ===== Ajustes generales de adaptación ===== */
html { -webkit-text-size-adjust: 100%; }
body { overflow-x: hidden; }
img, canvas { max-width: 100%; }
.cuentas-grid { grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); }
.nav-tabs { -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab { white-space: nowrap; flex-shrink: 0; }

/* ===== Tablets y celulares (hasta 820px) ===== */
@media (max-width: 820px) {
    .main-grid { grid-template-columns: 1fr !important; }
    .cat-grid { grid-template-columns: 1fr; gap: 15px; }
}

/* ===== Celulares (hasta 640px) ===== */
@media (max-width: 640px) {
    .topbar { padding: 10px 14px; position: sticky; top: 0; z-index: 50; }
    .logo { font-size: 1.05rem; }
    .logo img { height: 32px; margin-right: 8px; }
    .topbar .btn-outline { padding: 8px 12px; font-size: 0.8rem !important; }
    #userSelector { max-width: 140px; padding: 8px; font-size: 0.85rem; }

    .nav-tabs { gap: 6px; padding: 0 10px; position: sticky; top: 53px; z-index: 40; }
    .nav-tab { padding: 12px 8px; font-size: 0.9rem; }
    .nav-tab.active { padding: 6px 14px; margin: 8px 0; }

    .container { padding: 14px 12px 40px; }
    .card { padding: 14px; margin-bottom: 14px; }

    .summary-cards { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
    .summary-cards .card { padding: 12px; margin-bottom: 0; gap: 6px; }
    .summary-cards h3 { font-size: 0.7rem; letter-spacing: 0.5px; }
    .amount { font-size: 1.15rem; word-break: break-word; }

    .main-grid { gap: 14px !important; }
    .main-grid canvas { max-height: 260px; }
    .main-grid [style*="min-height: 300px"] { min-height: 230px !important; }
    .main-grid [style*="height: 300px"] { height: 240px !important; }

    /* Encabezados de sección con botones: se acomodan en varias líneas */
    .view-section > .flex-between { flex-wrap: wrap; gap: 10px; }
    .view-section > .flex-between > div { flex-wrap: wrap; }

    /* Filtros: una columna */
    .filters-bar { gap: 10px; }
    .filter-group { min-width: 100%; }

    /* Campos más cómodos para el dedo (16px evita el zoom automático en iPhone) */
    input, select { padding: 12px; font-size: 16px; }
    .btn-primary, .btn-outline { padding: 11px 16px; min-height: 44px; justify-content: center; }
    .action-btn { padding: 10px; font-size: 1rem; }

    /* Tablas -> tarjetas */
    .card > div[style*="overflow-x"] { overflow-x: visible !important; }
    table, tbody, tr, td { display: block; width: 100%; }
    thead { display: none; }
    table { margin-top: 0; }
    tr {
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 8px 12px;
        margin-bottom: 10px;
        background-color: var(--bg-main);
    }
    tr:hover td { background-color: transparent; }
    td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 6px 0;
        border-bottom: none;
        font-size: 0.9rem;
        text-align: right;
        word-break: break-word;
    }
    td::before {
        content: attr(data-label);
        color: var(--text-muted);
        font-size: 0.72rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        text-align: left;
        flex-shrink: 0;
    }
    td[data-label=""]::before { display: none; }
    td[data-label=""] { justify-content: flex-end; border-top: 1px solid var(--border); margin-top: 4px; padding-top: 8px; }

    /* Sobres y cuentas */
    .cuentas-grid { gap: 12px; }
    .cuentas-grid .card { padding: 16px !important; }
    #view-sobres .card .flex-between { align-items: flex-start; }
    #view-sobres #btnGuardarSobres { width: 100%; }

    /* Ventana de nuevo movimiento: hoja inferior a pantalla casi completa */
    .modal-overlay { align-items: flex-end; }
    .modal {
        max-width: 100%;
        max-height: 92vh;
        overflow-y: auto;
        border-radius: 16px 16px 0 0;
        padding: 18px 16px 24px;
    }
}

/* Pantallas muy angostas */
@media (max-width: 360px) {
    .summary-cards { grid-template-columns: 1fr; }
}