:root {
    /* Paleta de marca ATA */
    --brand-green: #196255;
    --brand-green-dark: #0F3E35;
    --brand-green-light: #E7F1EE;
    --brand-gold: #F1B34C;
    --brand-gold-dark: #C98F2E;
    --brand-gold-light: #FCEACB;

    --border: #E4E1D8;
    --surface-0: #F7F6F1;
    --surface-1: #FFFFFF;
    --surface-2: #FBFAF6;
    --text-primary: #24261F;
    --text-secondary: #62655A;
    --text-muted: #93958A;

    --accent: var(--brand-green);
    --accent-bg: var(--brand-green-light);

    --danger: #A3372F;
    --danger-bg: #FBEAE8;
    --warning: #A0691A;
    --warning-bg: #FCEFD9;
    --success: #2F7A5C;
    --success-bg: #E7F4EE;

    --radius: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(15, 62, 53, 0.06), 0 1px 1px rgba(15, 62, 53, 0.04);
    --shadow-md: 0 4px 14px rgba(15, 62, 53, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background: var(--surface-0);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--brand-green); text-decoration: none; }
a:hover { text-decoration: underline; }

.layout { display: flex; min-height: 100vh; }

/* ---------- Sidebar ---------- */
.sidebar {
    width: 220px;
    background: var(--brand-green-dark);
    padding: 1.25rem 0;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
}

.sidebar .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 1.25rem;
    margin-bottom: 1.5rem;
}

.sidebar .brand img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    padding: 3px;
}

.sidebar .brand span {
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    line-height: 1.2;
}

.sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 0 0.6rem; }

.sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 0.75rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: background 0.12s ease, color 0.12s ease;
}

.sidebar nav a:hover { background: rgba(255, 255, 255, 0.08); color: #fff; text-decoration: none; }

.sidebar nav a.active {
    background: var(--brand-gold);
    color: var(--brand-green-dark);
    font-weight: 600;
}

.sidebar .logout-link {
    margin-top: auto;
    padding: 0 0.6rem;
}
.sidebar .logout-link a {
    color: rgba(255, 255, 255, 0.55);
}
.sidebar .logout-link a:hover { color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- Contenido ---------- */
.content { flex: 1; margin-left: 220px; padding: 0 2rem 1.75rem; min-width: 0; }

.topbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.5rem 0 1rem;
    position: sticky; top: 0; z-index: 5;
    background: var(--surface-0);
    margin-bottom: 0.5rem;
}
.topbar h1 { font-size: 20px; font-weight: 600; margin: 0; color: var(--brand-green-dark); }
.topbar .subtitle { font-size: 13px; color: var(--text-secondary); margin: 2px 0 0; }

.bell {
    position: relative;
    font-size: 19px;
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    background: var(--surface-1);
    border: 0.5px solid var(--border);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}
.bell .badge {
    position: absolute; top: -3px; right: -3px;
    background: var(--danger); color: #fff;
    font-size: 10px; font-weight: 600; border-radius: 50%;
    min-width: 17px; height: 17px; padding: 0 2px;
    display: flex; align-items: center; justify-content: center;
    border: 2px solid var(--surface-0);
}

.card {
    background: var(--surface-1);
    border: 0.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-sm);
}
.card-flat { background: var(--surface-2); border: 0.5px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; }

.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 1.5rem; }
.metric-grid .label { font-size: 12.5px; color: var(--text-secondary); margin: 0 0 4px; font-weight: 500; }
.metric-grid .value { font-size: 26px; font-weight: 700; margin: 0; letter-spacing: -0.02em; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
    text-align: left; padding: 10px 14px; font-weight: 600; font-size: 12px;
    text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-secondary);
    background: var(--surface-2); border-bottom: 0.5px solid var(--border);
}
td { padding: 11px 14px; border-top: 0.5px solid var(--border); }
tr.clickable { cursor: pointer; transition: background 0.1s ease; }
tr.clickable:hover { background: var(--brand-green-light); }

.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; margin-right: 8px; box-shadow: 0 0 0 3px rgba(0,0,0,0.03); }
.dot.rojo { background: var(--danger); }
.dot.amarillo { background: var(--warning); }
.dot.verde { background: var(--success); }
.dot.sin_dato { background: var(--text-muted); }

.filters { display: flex; gap: 8px; margin-bottom: 1rem; flex-wrap: wrap; }
.filters select, .filters input {
    flex: 1; min-width: 130px; height: 38px; border: 0.5px solid var(--border);
    border-radius: var(--radius); padding: 0 12px; font-size: 13.5px; background: var(--surface-1);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
.filters select:focus, .filters input:focus { outline: none; border-color: var(--brand-green); box-shadow: 0 0 0 3px var(--brand-green-light); }

.btn {
    display: inline-flex; align-items: center; gap: 6px;
    height: 38px; padding: 0 16px; font-size: 13.5px; font-weight: 600;
    background: var(--surface-1); color: var(--brand-green-dark);
    border: 0.5px solid var(--border);
    border-radius: var(--radius); cursor: pointer;
    transition: all 0.12s ease;
    box-shadow: var(--shadow-sm);
}
.btn:hover { border-color: var(--brand-green); background: var(--brand-green-light); text-decoration: none; }

.btn-primary {
    background: var(--brand-green); color: #fff; border-color: var(--brand-green);
}
.btn-primary:hover { background: var(--brand-green-dark); border-color: var(--brand-green-dark); }

.badge-type {
    font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px;
    background: var(--accent-bg); color: var(--accent); display: inline-block;
}

.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-size: 12.5px; font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }

/* Estilo base para TODOS los campos de formulario, estén o no dentro de .form-group
   (filas de vencimientos, carga de kilometraje, etc. también deben verse prolijos) */
input[type="text"], input[type="email"], input[type="password"], input[type="number"],
input[type="date"], input[type="file"], select, textarea {
    border: 0.5px solid var(--border); border-radius: var(--radius);
    padding: 8px 11px; font-size: 13.5px; font-family: inherit;
    color: var(--text-primary); background: var(--surface-1);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
    height: 38px;
}
textarea { height: auto; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 9px 12px; font-size: 14px; }

input:focus, select:focus, textarea:focus {
    outline: none; border-color: var(--brand-green); box-shadow: 0 0 0 3px var(--brand-green-light);
}

/* Fecha: recoloreamos el ícono del calendario para que combine con la marca */
input[type="date"] { color: var(--text-primary); }
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(28%) sepia(24%) saturate(1220%) hue-rotate(122deg) brightness(94%) contrast(93%);
    cursor: pointer; padding: 2px;
}

/* Archivo: ocultamos el look nativo y mostramos un botón de marca + nombre del archivo */
input[type="file"] {
    font-size: 12.5px; color: var(--text-secondary); padding: 0; border: none;
    height: auto; background: transparent;
}
input[type="file"]::file-selector-button {
    display: inline-flex; align-items: center; gap: 6px;
    height: 32px; padding: 0 14px; margin-right: 10px;
    font-size: 12.5px; font-weight: 600; font-family: inherit;
    background: var(--brand-green); color: #fff;
    border: none; border-radius: 999px; cursor: pointer;
    transition: background 0.12s ease;
}
input[type="file"]::file-selector-button:hover { background: var(--brand-green-dark); }

.alert { padding: 11px 15px; border-radius: var(--radius); font-size: 13.5px; margin-bottom: 1rem; font-weight: 500; }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }

/* ---------- Ficha: datos generales ---------- */
.section-title {
    font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
    color: var(--brand-green-dark); margin: 0 0 14px;
    display: flex; align-items: center; gap: 7px;
}
.section-title::before { content: ""; width: 3px; height: 12px; background: var(--brand-gold); border-radius: 2px; display: inline-block; }

/* Fila compacta: para identificadores cortos que caben en una línea (año, N° motor, etc.) */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(115px, 1fr)); gap: 16px 20px; margin-bottom: 18px; }

/* Filas propias: para texto descriptivo que puede ser largo (tipo, marca/modelo, equipamiento) —
   cada uno ocupa todo el ancho disponible para no cortarse en varias líneas dentro de una columna angosta */
.info-rows { display: flex; flex-direction: column; gap: 12px; }
.info-rows .info-row:not(:last-child) { padding-bottom: 12px; border-bottom: 0.5px solid var(--surface-0); }

.item-label {
    font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
    color: var(--text-muted); margin: 0 0 4px;
}
.item-value { font-size: 14px; font-weight: 500; color: var(--text-primary); margin: 0; line-height: 1.4; letter-spacing: -0.005em; }
.item-value.muted, .muted { color: var(--text-muted); font-weight: 400; font-style: italic; }

/* Foto de la ficha: compacta, con ícono cuando no hay ninguna cargada */
.photo-box {
    width: 108px; height: 108px; border-radius: var(--radius-lg); flex-shrink: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
    background: var(--surface-2); border: 0.5px solid var(--border);
    color: var(--text-muted); font-size: 10.5px; text-align: center; overflow: hidden;
}
.photo-box img { width: 100%; height: 100%; object-fit: cover; }
.photo-box svg { opacity: 0.35; }

/* Formulario de vencimiento (fecha + comprobante + guardar), dentro de una fila de tabla angosta:
   fecha y guardar comparten la primera línea, el selector de archivo ocupa una línea propia debajo */
.venc-form { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.venc-form input[type="date"] { width: 132px; height: 34px; order: 1; }
.venc-form button[type="submit"] { order: 2; height: 34px; padding: 0 12px; }
.venc-form input[type="file"] { order: 3; flex-basis: 100%; margin-top: 2px; }
.venc-form a { order: 4; flex-basis: 100%; font-size: 12px; margin-top: 2px; }

/* ---------- Colapsables del dashboard ---------- */
.collapsible { margin-bottom: 1rem; }
.collapsible summary {
    cursor: pointer; font-size: 14.5px; font-weight: 600; padding: 10px 2px;
    color: var(--brand-green-dark); list-style: none; display: flex; align-items: center; gap: 6px;
}
.collapsible summary::-webkit-details-marker { display: none; }
.collapsible summary::before {
    content: "▸"; display: inline-block; color: var(--brand-gold-dark);
    transition: transform 0.15s ease; font-size: 12px;
}
.collapsible[open] summary::before { transform: rotate(90deg); }
.summary-alert { color: var(--danger); font-weight: 500; font-size: 13px; }

/* ---------- Tarjetas de resumen del dashboard (lista simple, sin barras) ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 14px; margin-bottom: 1.5rem; }
.stat-row { display: flex; justify-content: space-between; align-items: baseline; padding: 8px 0; border-bottom: 0.5px solid var(--border); }
.stat-row:last-child { border-bottom: none; padding-bottom: 0; }
.stat-row .stat-label { font-size: 13px; color: var(--text-secondary); }
.stat-row .stat-value { font-size: 17px; font-weight: 700; color: var(--text-primary); }

/* ---------- Pantalla de login ---------- */
.auth-screen {
    display: flex; min-height: 100vh; align-items: center; justify-content: center;
    background: linear-gradient(160deg, var(--brand-green-dark) 0%, var(--brand-green) 55%, #2C7A65 100%);
}
.auth-card {
    width: 340px; background: var(--surface-1); border-radius: var(--radius-lg);
    padding: 2rem 1.75rem; box-shadow: var(--shadow-md);
    text-align: center;
}
.auth-card img { width: 64px; height: 64px; object-fit: contain; margin-bottom: 0.75rem; }
.auth-card h1 { font-size: 16px; font-weight: 700; color: var(--brand-green-dark); margin: 0 0 1.25rem; }
.auth-card form { text-align: left; }