/* ══════════════════════════════════════════════
   RENTA-V1 — Design System
   Dark theme, modern, professional
   ══════════════════════════════════════════════ */

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --bg-input: #0f172a;
    --border: #334155;
    --border-light: #475569;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: rgba(59,130,246,0.15);

    --success: #22c55e;
    --success-bg: rgba(34,197,94,0.12);
    --warning: #eab308;
    --warning-bg: rgba(234,179,8,0.12);
    --danger: #ef4444;
    --danger-bg: rgba(239,68,68,0.12);
    --info: #06b6d4;
    --info-bg: rgba(6,182,212,0.12);
    --orange: #f97316;
    --orange-bg: rgba(249,115,22,0.12);

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
    --transition: all 0.2s ease;

    --sidebar-width: 260px;
    --header-height: 64px;

    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 14px; }
body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

/* ─── LAYOUT ──────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    position: fixed; top: 0; left: 0; bottom: 0;
    overflow-y: auto; z-index: 100;
    display: flex; flex-direction: column;
}

.sidebar-brand {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 12px;
}
.sidebar-brand .brand-icon {
    width: 38px; height: 38px; border-radius: 10px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; color: #fff; font-weight: 700;
}
.sidebar-brand .brand-text {
    font-size: 1rem; font-weight: 700; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-brand .brand-sub {
    font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px;
}

.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-section {
    padding: 8px 24px 4px;
    font-size: 0.7rem; font-weight: 600;
    color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 1.5px; margin-top: 8px;
}

.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 24px; color: var(--text-secondary);
    transition: var(--transition); cursor: pointer;
    border-left: 3px solid transparent;
    font-size: 0.92rem;
}
.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.nav-item.active {
    background: var(--accent-light);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 600;
}
.nav-item svg, .nav-item .nav-icon {
    width: 20px; height: 20px; opacity: 0.7;
    flex-shrink: 0;
}
.nav-item.active svg, .nav-item.active .nav-icon { opacity: 1; }

.nav-badge {
    margin-left: auto; background: var(--danger);
    color: #fff; font-size: 0.7rem; font-weight: 700;
    padding: 2px 7px; border-radius: 10px;
}

.sidebar-footer {
    padding: 16px 24px; border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 10px;
}
.sidebar-footer .user-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem;
}
.sidebar-footer .user-info { flex: 1; min-width: 0; }
.sidebar-footer .user-name {
    font-size: 0.85rem; font-weight: 600;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-footer .user-role { font-size: 0.72rem; color: var(--text-muted); }

.main-content {
    flex: 1; margin-left: var(--sidebar-width);
    padding: 24px 32px; min-height: 100vh;
}

/* ─── PAGE HEADER ─────────────────────────────── */
.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.page-header h1 {
    font-size: 1.5rem; font-weight: 700; color: var(--text-primary);
}
.page-header .breadcrumb {
    font-size: 0.8rem; color: var(--text-muted);
}

/* ─── CARDS ───────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px; margin-bottom: 20px;
}
.card-header {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 16px; margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.card-header h2 { font-size: 1.1rem; font-weight: 600; }
.card-header h3 { font-size: 1rem; font-weight: 600; }

/* ─── STAT CARDS ──────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px; margin-bottom: 24px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px; display: flex; align-items: flex-start; gap: 16px;
    transition: var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.stat-icon {
    width: 48px; height: 48px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-icon.blue   { background: var(--accent-light); color: var(--accent); }
.stat-icon.green  { background: var(--success-bg); color: var(--success); }
.stat-icon.yellow { background: var(--warning-bg); color: var(--warning); }
.stat-icon.red    { background: var(--danger-bg); color: var(--danger); }
.stat-icon.orange { background: var(--orange-bg); color: var(--orange); }
.stat-icon.cyan   { background: var(--info-bg); color: var(--info); }

.stat-info { flex: 1; }
.stat-value { font-size: 1.6rem; font-weight: 700; line-height: 1.2; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* ─── BUTTONS ─────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px; border-radius: var(--radius-sm);
    font-size: 0.88rem; font-weight: 600; border: none;
    cursor: pointer; transition: var(--transition);
    text-decoration: none; white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-outline {
    background: transparent; color: var(--text-secondary);
    border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-xs { padding: 4px 10px; font-size: 0.75rem; border-radius: 6px; }

/* ─── FORMS ───────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
    display: block; font-size: 0.82rem; font-weight: 600;
    color: var(--text-secondary); margin-bottom: 6px;
}
.form-control {
    width: 100%; padding: 10px 14px; background: var(--bg-input);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: 0.9rem;
    transition: var(--transition); font-family: var(--font);
}
.form-control:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}
.form-control::placeholder { color: var(--text-muted); }
select.form-control { appearance: none; cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-check {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.88rem; cursor: pointer;
}
.form-check input[type="checkbox"] {
    width: 18px; height: 18px; accent-color: var(--accent);
}

/* ─── TABLES ──────────────────────────────────── */
.table-responsive { overflow-x: auto; }
table {
    width: 100%; border-collapse: collapse;
}
table th {
    padding: 12px 16px; text-align: left;
    font-size: 0.78rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.5px; color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: rgba(0,0,0,0.15);
}
table td {
    padding: 12px 16px; border-bottom: 1px solid var(--border);
    font-size: 0.88rem; color: var(--text-secondary);
}
table tbody tr { transition: var(--transition); }
table tbody tr:hover { background: var(--bg-hover); }
table .actions { display: flex; gap: 6px; }

/* ─── BADGES ──────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px; border-radius: 20px;
    font-size: 0.75rem; font-weight: 600;
}
.badge-green  { background: var(--success-bg); color: var(--success); }
.badge-blue   { background: var(--accent-light); color: var(--accent); }
.badge-yellow { background: var(--warning-bg); color: var(--warning); }
.badge-red    { background: var(--danger-bg); color: var(--danger); }
.badge-orange { background: var(--orange-bg); color: var(--orange); }
.badge-gray   { background: rgba(100,116,139,0.15); color: var(--text-muted); }

/* ─── PANEL VISUAL (BUTACAS) ──────────────────── */
.panel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}
.unit-card {
    background: var(--bg-card); border: 2px solid var(--border);
    border-radius: var(--radius); padding: 16px;
    cursor: pointer; transition: var(--transition);
    position: relative; overflow: hidden;
}
.unit-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.unit-card .unit-status-bar {
    position: absolute; top: 0; left: 0; right: 0; height: 4px;
}
.unit-card.disponible    { border-color: var(--success); }
.unit-card.disponible .unit-status-bar { background: var(--success); }
.unit-card.ocupada       { border-color: var(--accent); }
.unit-card.ocupada .unit-status-bar { background: var(--accent); }
.unit-card.reservada     { border-color: var(--warning); }
.unit-card.reservada .unit-status-bar { background: var(--warning); }
.unit-card.mantenimiento { border-color: var(--orange); }
.unit-card.mantenimiento .unit-status-bar { background: var(--orange); }
.unit-card.bloqueada     { border-color: var(--danger); }
.unit-card.bloqueada .unit-status-bar { background: var(--danger); }

.unit-card .unit-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 8px; margin-top: 4px;
}
.unit-card .unit-code { font-weight: 700; font-size: 1rem; }
.unit-card .unit-icon { font-size: 20px; }
.unit-card .unit-tenant { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 4px; }
.unit-card .unit-price { font-size: 0.82rem; color: var(--text-muted); }
.unit-card .unit-alert {
    margin-top: 8px; padding: 6px 10px; border-radius: 6px;
    font-size: 0.75rem; font-weight: 600;
}
.unit-card .unit-alert.alert-warning { background: var(--warning-bg); color: var(--warning); }
.unit-card .unit-alert.alert-danger  { background: var(--danger-bg); color: var(--danger); }

/* Panel legend */
.panel-legend {
    display: flex; gap: 20px; flex-wrap: wrap;
    margin-bottom: 20px; padding: 12px 16px;
    background: var(--bg-secondary); border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; }
.legend-dot {
    width: 12px; height: 12px; border-radius: 50%;
}

/* Panel summary bar */
.panel-summary {
    display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px;
}
.summary-chip {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px; border-radius: 20px;
    font-size: 0.85rem; font-weight: 600;
    background: var(--bg-secondary); border: 1px solid var(--border);
}
.summary-chip .chip-count {
    font-size: 1.1rem; font-weight: 700;
}

/* ─── ALERTS / FLASH ──────────────────────────── */
.alert {
    padding: 14px 18px; border-radius: var(--radius-sm);
    margin-bottom: 16px; font-size: 0.88rem;
    display: flex; align-items: center; gap: 10px;
}
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(34,197,94,0.25); }
.alert-error   { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239,68,68,0.25); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(234,179,8,0.25); }
.alert-info    { background: var(--info-bg); color: var(--info); border: 1px solid rgba(6,182,212,0.25); }

/* ─── MODAL ───────────────────────────────────── */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.6); z-index: 1000;
    align-items: center; justify-content: center;
    backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-secondary); border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    width: 90%; max-width: 600px; max-height: 90vh;
    overflow-y: auto; box-shadow: var(--shadow-lg);
}
.modal-header {
    padding: 20px 24px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-size: 1.1rem; font-weight: 700; }
.modal-close {
    width: 32px; height: 32px; border-radius: 50%;
    background: var(--bg-hover); border: none; color: var(--text-secondary);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    font-size: 18px; transition: var(--transition);
}
.modal-close:hover { background: var(--danger-bg); color: var(--danger); }
.modal-body { padding: 24px; }
.modal-footer {
    padding: 16px 24px; border-top: 1px solid var(--border);
    display: flex; justify-content: flex-end; gap: 10px;
}

/* ─── EMPTY STATE ─────────────────────────────── */
.empty-state {
    text-align: center; padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-secondary); }
.empty-state p { font-size: 0.88rem; margin-bottom: 20px; }

/* ─── MOBILE TOGGLE ───────────────────────────── */
.sidebar-toggle {
    display: none; position: fixed; top: 16px; left: 16px; z-index: 200;
    width: 42px; height: 42px; border-radius: var(--radius-sm);
    background: var(--bg-secondary); border: 1px solid var(--border);
    color: var(--text-primary); cursor: pointer;
    align-items: center; justify-content: center; font-size: 20px;
}

/* ─── RESPONSIVE ──────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 300;
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: flex; }
    .main-content { margin-left: 0; padding: 16px; padding-top: 70px; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
    .panel-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
    .page-header { flex-direction: column; align-items: flex-start; }
}

/* ─── UTILITY ─────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-muted); }
.text-success{ color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning{ color: var(--warning); }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; }
.gap-2 { gap: 16px; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.hidden { display: none !important; }

/* ─── LOGIN PAGE ──────────────────────────────── */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: var(--bg-primary);
}
.login-card {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 40px;
    width: 100%; max-width: 400px; box-shadow: var(--shadow-lg);
}
.login-card .login-logo {
    text-align: center; margin-bottom: 32px;
}
.login-card .login-logo .logo-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 24px; color: #fff; font-weight: 700; margin-bottom: 12px;
}
.login-card .login-logo h1 { font-size: 1.3rem; font-weight: 700; }
.login-card .login-logo p { font-size: 0.85rem; color: var(--text-muted); }