@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
    --bg: #14181c;
    --surface: #1b2027;
    --surface-2: #232a33;
    --border: #2c343e;
    --text: #e8e6e1;
    --text-dim: #8c96a3;
    --gold: #d4a54a;
    --gold-dim: #b08a3d;
    --green: #5fa87e;
    --red: #c4574a;
    --radius: 6px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

h1, h2, h3, .display {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0;
}

.mono, .num, td.num, input[type="number"] {
    font-family: 'IBM Plex Mono', monospace;
    font-variant-numeric: tabular-nums;
}

a { color: var(--gold); text-decoration: none; }

/* Layout */
.app { display: flex; min-height: 100vh; }

.sidebar {
    width: 220px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    flex-shrink: 0;
}

.sidebar .brand {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
    color: var(--gold);
    margin-bottom: 4px;
}

.sidebar .brand-sub {
    font-size: 11px;
    color: var(--text-dim);
    margin-bottom: 28px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--text-dim);
    font-size: 14px;
    margin-bottom: 2px;
    cursor: pointer;
    border-left: 2px solid transparent;
}

.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active {
    background: var(--surface-2);
    color: var(--gold);
    border-left: 2px solid var(--gold);
}

.main { flex: 1; padding: 28px 36px; max-width: 1100px; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.periodo-select {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 12px;
    border-radius: var(--radius);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 13px;
}

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
}

.card .label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    margin-bottom: 10px;
}

.card .value {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 26px;
    font-weight: 500;
}

.card.accent { border-color: var(--gold-dim); }
.card.accent .value { color: var(--gold); }
.card .value.positive { color: var(--green); }
.card .value.negative { color: var(--red); }

/* Table (ledger) */
table { width: 100%; border-collapse: collapse; }

thead th {
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

tbody td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

tbody tr:hover { background: var(--surface); }

td.num, th.num { text-align: right; }

.tag {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--text-dim);
}

.tag.extranjero { border-color: var(--gold-dim); color: var(--gold); }

/* Forms */
.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 24px;
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }

label {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 5px;
}

input, select, textarea {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 11px;
    border-radius: var(--radius);
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 14px;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--gold-dim);
}

.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }

button, .btn {
    background: var(--gold);
    color: #14181c;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
}

button:hover { background: var(--gold-dim); }
button.secondary { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
button.danger { background: transparent; color: var(--red); border: 1px solid var(--red); }

.hint { font-size: 12px; color: var(--text-dim); margin-top: 6px; }
.hint.warn { color: var(--gold); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }

footer {
    margin-top: 40px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-dim);
}

@media (max-width: 768px) {
    .app { flex-direction: column; }
    .sidebar { width: 100%; display: flex; align-items: center; gap: 16px; padding: 14px 16px; }
    .sidebar .brand-sub { display: none; }
    .nav-item { margin-bottom: 0; }
    .main { padding: 20px; }
    .cards, .form-grid { grid-template-columns: 1fr; }
}