:root {
    --bg: #f3efe6;
    --panel: #fffdf8;
    --ink: #1f2a24;
    --muted: #5f6b64;
    --line: #d7cfc0;
    --accent: #1f6f54;
    --accent-2: #c45c26;
    --warn: #9a6b00;
    --danger: #9b2c2c;
    --ok: #1f6f54;
    --shadow: 0 10px 30px rgba(31, 42, 36, 0.08);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(31,111,84,.10), transparent 30%),
        linear-gradient(180deg, #f7f3ea, var(--bg));
    min-height: 100vh;
    display: grid;
    grid-template-columns: 240px 1fr;
}

.sidebar {
    background: #16382d;
    color: #edf6f1;
    padding: 1.4rem 1rem;
    min-height: 100vh;
    position: sticky;
    top: 0;
}
.brand { margin-bottom: 1.5rem; padding: 0 .5rem; }
.brand strong { display: block; font-size: 1.15rem; }
.brand span { color: #b7d2c6; font-size: .9rem; }
.sidebar nav { display: grid; gap: .35rem; }
.sidebar a {
    color: #d7ebe2;
    text-decoration: none;
    padding: .7rem .8rem;
    border-radius: 10px;
}
.sidebar a:hover, .sidebar a.active { background: rgba(255,255,255,.12); color: #fff; }
.sidebar a.logout { margin-top: .6rem; color: #f3c9b6; }

body.login-page {
    display: flex;
    grid-template-columns: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.login-box {
    width: min(380px, 100%);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.6rem;
    box-shadow: var(--shadow);
    display: grid;
    gap: .9rem;
}
.login-box .brand { margin-bottom: .2rem; padding: 0; }
.login-box .brand strong { color: var(--accent); }
.login-box .brand span { color: var(--muted); }
.login-box h1 { margin: 0; font-size: 1.25rem; }
.login-box .btn { width: 100%; }

.content { padding: 1.5rem; }
.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
}
.page-head h1 { margin: 0; font-size: 1.6rem; }
.page-head p { margin: .25rem 0 0; color: var(--muted); }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.2rem;
}
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1rem;
    box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: .85rem; }
.card .value { font-size: 1.45rem; font-weight: 700; margin-top: .35rem; }

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1rem;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.btn {
    display: inline-block;
    border: 0;
    border-radius: 10px;
    padding: .65rem 1rem;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
}
.btn:hover { filter: brightness(1.05); }
.btn-secondary { background: #3d4d45; }
.btn-danger { background: var(--danger); }
.btn-warn { background: var(--accent-2); }
.btn-sm { padding: .4rem .7rem; font-size: .85rem; }

table { width: 100%; border-collapse: collapse; }
th, td {
    padding: .7rem .55rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
    font-size: .92rem;
}
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: .9rem;
}
label { display: grid; gap: .35rem; font-size: .9rem; color: var(--muted); }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: .65rem .75rem;
    font: inherit;
    color: var(--ink);
    background: #fff;
}
textarea { min-height: 80px; resize: vertical; }

.alert {
    padding: .85rem 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    font-weight: 600;
}
.alert-ok { background: #e5f5ee; color: var(--ok); }
.alert-error { background: #fde8e8; color: var(--danger); }
.alert-warn { background: #fff4d6; color: var(--warn); }

.badge {
    display: inline-block;
    padding: .2rem .55rem;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 700;
}
.badge-ok { background: #e5f5ee; color: var(--ok); }
.badge-warn { background: #fff4d6; color: var(--warn); }
.badge-danger { background: #fde8e8; color: var(--danger); }
.badge-muted { background: #eee; color: #555; }

.actions { display: flex; gap: .4rem; flex-wrap: wrap; }
.muted { color: var(--muted); }
.right { text-align: right; }
.stack { display: grid; gap: .8rem; }

.detalle-table input { min-width: 90px; }
.detalle-table select { min-width: 180px; }

@media (max-width: 900px) {
    body { grid-template-columns: 1fr; }
    .sidebar { position: relative; min-height: auto; }
    .sidebar nav { grid-template-columns: repeat(2, 1fr); }
}