:root {
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--slate-900);
    color: var(--slate-200);
}

/* ── Utilidades ───────────────────────────────────────────── */
.bg-slate-900 { background-color: var(--slate-900) !important; }
.bg-slate-800 { background-color: var(--slate-800) !important; }
.bg-slate-700 { background-color: var(--slate-700) !important; }
.text-slate-200 { color: var(--slate-200) !important; }
.text-slate-400 { color: var(--slate-400) !important; }
.text-slate-600 { color: var(--slate-600) !important; }
.border-secondary { border-color: var(--slate-700) !important; }

/* ── Wrapper y Sidebar ────────────────────────────────────── */
.wrapper { display: flex; width: 100%; }

#sidebar {
    min-width: 250px;
    max-width: 250px;
    overflow: hidden;
    transition: min-width 0.28s cubic-bezier(0.4,0,0.2,1),
                max-width 0.28s cubic-bezier(0.4,0,0.2,1),
                margin-left 0.28s cubic-bezier(0.4,0,0.2,1);
}
#sidebar.active { margin-left: -250px; }

@media (max-width: 991.98px) {
    #sidebar { margin-left: -250px; }
    #sidebar.active { margin-left: 0; }
}

/* ── Sidebar Rail (icon-only mode) ───────────────────────── */
#sidebar.sidebar-rail {
    min-width: 70px;
    max-width: 70px;
}

/* Text elements that animate out */
.sidebar-text {
    overflow: hidden;
    white-space: nowrap;
    max-width: 200px;
    opacity: 1;
    transition: max-width 0.25s cubic-bezier(0.4,0,0.2,1),
                opacity 0.2s ease;
}
.sidebar-rail .sidebar-text {
    max-width: 0;
    opacity: 0;
}

/* Center icons when collapsed */
.sidebar-rail .sidebar-nav-link,
.sidebar-rail .sidebar-nav-link:hover {
    justify-content: center;
    padding: 0.6rem;
    border-left-color: transparent;
}
.sidebar-rail .sidebar-nav-link.active {
    background: rgba(59,130,246,0.15);
    border-radius: 10px;
}
.sidebar-rail .sidebar-icon-wrap {
    margin-right: 0;
}

/* Hide submenus and section labels */
.sidebar-rail .sidebar-submenu { display: none; }
.sidebar-rail .sidebar-section-label { display: none; }

/* Rail toggle button */
.sidebar-rail-toggle {
    display: flex;
    align-items: center;
    background: transparent;
    border: 1px solid var(--slate-700);
    color: var(--slate-500);
    border-radius: 8px;
    padding: 0.35rem 0.6rem;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
    width: 100%;
    font-size: 0.8rem;
    gap: 0.5rem;
}
.sidebar-rail-toggle:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--slate-500);
    color: var(--slate-200);
}
.sidebar-rail .sidebar-rail-toggle {
    justify-content: center;
    padding: 0.45rem;
    width: auto;
    margin: 0 auto;
}

/* Chevron rotation */
.sidebar-rail-chevron {
    flex-shrink: 0;
    transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
}
.sidebar-rail .sidebar-rail-chevron {
    transform: rotate(180deg);
}

/* ── Scrollbars ───────────────────────────────────────────── */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--slate-600) var(--slate-900);
}
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--slate-900); }
::-webkit-scrollbar-thumb { background: var(--slate-600); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--slate-500); }

/* ── Transiciones globales ────────────────────────────────── */
a, button, .btn, .nav-link, .list-group-item, .card, .form-control, .form-select, .badge {
    transition: all 0.18s ease;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
    border-color: rgba(51,65,85,0.8) !important;
    box-shadow: 0 1px 3px rgba(0,0,0,0.4), 0 4px 16px rgba(0,0,0,0.25);
}
.card:hover {
    box-shadow: 0 4px 24px rgba(0,0,0,0.5), 0 1px 4px rgba(0,0,0,0.3);
    transform: translateY(-1px);
}

.card-header-primary {
    background: linear-gradient(135deg, rgba(59,130,246,0.15) 0%, rgba(59,130,246,0.04) 100%);
    border-bottom: 1px solid rgba(59,130,246,0.2) !important;
}
.card-header-success {
    background: linear-gradient(135deg, rgba(34,197,94,0.15) 0%, rgba(34,197,94,0.04) 100%);
    border-bottom: 1px solid rgba(34,197,94,0.2) !important;
}
.card-header-warning {
    background: linear-gradient(135deg, rgba(251,191,36,0.15) 0%, rgba(251,191,36,0.04) 100%);
    border-bottom: 1px solid rgba(251,191,36,0.2) !important;
}
.card-header-info {
    background: linear-gradient(135deg, rgba(13,202,240,0.15) 0%, rgba(13,202,240,0.04) 100%);
    border-bottom: 1px solid rgba(13,202,240,0.2) !important;
}
.card-header-danger {
    background: linear-gradient(135deg, rgba(239,68,68,0.15) 0%, rgba(239,68,68,0.04) 100%);
    border-bottom: 1px solid rgba(239,68,68,0.2) !important;
}

/* ── Botones con gradiente ────────────────────────────────── */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-color: #2563eb;
    box-shadow: 0 2px 8px rgba(59,130,246,0.3);
}
.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    border-color: #3b82f6;
    box-shadow: 0 4px 16px rgba(59,130,246,0.45);
    transform: translateY(-1px);
}
.btn-success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-color: #16a34a;
    box-shadow: 0 2px 8px rgba(34,197,94,0.3);
}
.btn-success:hover, .btn-success:focus {
    background: linear-gradient(135deg, #4ade80, #22c55e);
    border-color: #22c55e;
    box-shadow: 0 4px 16px rgba(34,197,94,0.4);
    transform: translateY(-1px);
}

/* ── Tablas ───────────────────────────────────────────────── */
.table-dark {
    --bs-table-bg: var(--slate-800);
    --bs-table-striped-bg: var(--slate-900);
    --bs-table-hover-bg: var(--slate-700);
}
.table > tbody > tr {
    border-left: 3px solid transparent;
}
.table > tbody > tr:hover {
    border-left-color: #3b82f6;
}
.table thead th {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--slate-400) !important;
    border-bottom: 1px solid rgba(51,65,85,0.8);
    padding-bottom: 0.6rem;
}
.table-dark tbody tr:nth-child(even) {
    background-color: rgba(255,255,255,0.022);
}

/* ── Badges semánticos ────────────────────────────────────── */
.badge {
    font-weight: 500;
    letter-spacing: 0.03em;
    padding: 0.32em 0.72em;
    border-radius: 999px;
    font-size: 0.72rem;
}
.badge-activo       { background: rgba(34,197,94,0.18);   color: #4ade80;  border: 1px solid rgba(34,197,94,0.3); }
.badge-vencido      { background: rgba(239,68,68,0.18);   color: #f87171;  border: 1px solid rgba(239,68,68,0.3); }
.badge-cancelado,
.badge-zona         { background: rgba(100,116,139,0.18); color: #94a3b8;  border: 1px solid rgba(100,116,139,0.3); }
.badge-refinanciado { background: rgba(168,85,247,0.18);  color: #c084fc;  border: 1px solid rgba(168,85,247,0.3); }
.badge-incobrable   { background: rgba(249,115,22,0.18);  color: #fb923c;  border: 1px solid rgba(249,115,22,0.3); }

/* ── Formularios ──────────────────────────────────────────── */
.form-control, .form-select {
    background-color: var(--slate-900);
    border-color: rgba(51,65,85,0.9);
    color: var(--slate-100);
}
.form-control:hover, .form-select:hover {
    border-color: var(--slate-500);
}
.form-control:focus, .form-select:focus {
    background-color: var(--slate-800);
    color: var(--slate-50);
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.18), inset 0 1px 2px rgba(0,0,0,0.2);
}
.input-group-text {
    background-color: var(--slate-700);
    border-color: var(--slate-700);
    color: var(--slate-300);
}
.form-section-header {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--slate-400);
    padding: 0.2rem 0 0.2rem 0.75rem;
    border-left: 3px solid #3b82f6;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar-nav-link {
    display: flex;
    align-items: center;
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--slate-300);
    border-left: 3px solid transparent;
    font-size: 0.9rem;
}
.sidebar-nav-link:hover {
    background: rgba(59,130,246,0.08);
    color: var(--slate-100);
    border-left-color: rgba(59,130,246,0.4);
}
.sidebar-nav-link.active {
    background: linear-gradient(90deg, rgba(59,130,246,0.18) 0%, rgba(59,130,246,0.04) 100%);
    color: #fff;
    border-left-color: #3b82f6;
    font-weight: 600;
}
.sidebar-icon-wrap {
    width: 30px; height: 30px;
    border-radius: 8px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 0.92rem;
    flex-shrink: 0;
    margin-right: 0.55rem;
}
.icon-wrap-blue   { background: rgba(59,130,246,0.18);  color: #60a5fa; }
.icon-wrap-green  { background: rgba(34,197,94,0.18);   color: #4ade80; }
.icon-wrap-yellow { background: rgba(251,191,36,0.18);  color: #fde68a; }
.icon-wrap-purple { background: rgba(168,85,247,0.18);  color: #c084fc; }
.icon-wrap-orange { background: rgba(249,115,22,0.18);  color: #fb923c; }
.icon-wrap-gray   { background: rgba(100,116,139,0.18); color: #94a3b8; }

.sidebar-brand-name {
    font-weight: 800;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.sidebar-brand-tag {
    font-size: 0.63rem;
    color: var(--slate-500);
    letter-spacing: 0.05em;
}
.sidebar-section-label {
    font-size: 0.63rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-600);
}
.sidebar-collapse-arrow {
    font-size: 0.72rem;
    color: var(--slate-500);
    margin-left: auto;
    transition: transform 0.2s ease;
}
[aria-expanded="true"] .sidebar-collapse-arrow {
    transform: rotate(180deg);
}
.sidebar-submenu a {
    display: block;
    padding: 0.3rem 0.75rem;
    font-size: 0.85rem;
    color: var(--slate-400);
    text-decoration: none;
    border-radius: 6px;
    transition: color 0.18s ease, background 0.18s ease;
}
.sidebar-submenu a:hover {
    color: var(--slate-100);
    background: rgba(255,255,255,0.04);
}

/* ── Navbar ──────────────────────────────────────────────── */
.app-navbar {
    background: linear-gradient(180deg, var(--slate-800) 0%, rgba(30,41,59,0.97) 100%);
    border-bottom: 1px solid rgba(51,65,85,0.6) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.user-avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem;
    color: white;
    box-shadow: 0 0 0 2px rgba(59,130,246,0.35);
    position: relative;
    flex-shrink: 0;
}
.user-avatar::after {
    content: '';
    position: absolute;
    bottom: 1px; right: 1px;
    width: 8px; height: 8px;
    background: #22c55e;
    border-radius: 50%;
    border: 2px solid var(--slate-800);
}

/* ── Perfil de cliente ────────────────────────────────────── */
.client-avatar {
    width: 96px; height: 96px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: 0 0 0 4px rgba(59,130,246,0.2), 0 4px 24px rgba(59,130,246,0.25);
    margin-bottom: 1rem;
}
.client-mini-stat {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(51,65,85,0.7);
    border-radius: 10px;
    padding: 0.55rem 0.5rem;
    text-align: center;
}
.client-mini-stat .stat-num {
    font-size: 1.4rem;
    font-weight: 800;
    line-height: 1;
}
.client-mini-stat .stat-lbl {
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--slate-400);
    margin-top: 2px;
}

/* ── Utilidades extra ─────────────────────────────────────── */
.text-gradient-blue {
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Paginación */
.page-link {
    background-color: var(--slate-800);
    border-color: var(--slate-700);
    color: var(--slate-300);
}
.page-link:hover {
    background-color: var(--slate-700);
    border-color: var(--slate-600);
    color: white;
}
.page-item.active .page-link {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-color: #3b82f6;
}

/* Alerts con acento izquierdo */
.alert {
    border-left: 4px solid;
    border-radius: 8px;
}
.alert-success { border-left-color: #22c55e; }
.alert-danger  { border-left-color: #ef4444; }
.alert-warning { border-left-color: #fbbf24; }
.alert-info    { border-left-color: #0dcaf0; }

/* ── Dashboard ────────────────────────────────────────────── */
.dash-header {
    background: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(168,85,247,0.06) 60%, transparent 100%);
    border: 1px solid rgba(59,130,246,0.14);
    border-radius: 16px;
    padding: 1.4rem 1.8rem;
    margin-bottom: 1.75rem;
}

.kpi-card-v2 {
    background: var(--slate-800);
    border-radius: 16px;
    border: 1px solid rgba(51,65,85,0.7);
    overflow: hidden;
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.kpi-card-v2::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
}
.kpi-card-v2.kpi-blue::before   { background: linear-gradient(90deg,#3b82f6,#818cf8); }
.kpi-card-v2.kpi-green::before  { background: linear-gradient(90deg,#22c55e,#34d399); }
.kpi-card-v2.kpi-yellow::before { background: linear-gradient(90deg,#f59e0b,#fbbf24); }
.kpi-card-v2.kpi-cyan::before   { background: linear-gradient(90deg,#06b6d4,#22d3ee); }
.kpi-card-v2:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(0,0,0,0.45);
}

.kpi-icon-v2 {
    width: 46px; height: 46px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.kpi-icon-v2.icon-blue   { background: rgba(59,130,246,0.15);  color: #60a5fa; }
.kpi-icon-v2.icon-green  { background: rgba(34,197,94,0.15);   color: #4ade80; }
.kpi-icon-v2.icon-yellow { background: rgba(245,158,11,0.15);  color: #fbbf24; }
.kpi-icon-v2.icon-cyan   { background: rgba(6,182,212,0.15);   color: #22d3ee; }

.kpi-num-v2 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--slate-100);
}
.kpi-lbl-v2 {
    font-size: 0.78rem;
    color: var(--slate-400);
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-top: 0.25rem;
}

.sec-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-500);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.sec-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(51,65,85,0.6);
}

.activity-row {
    padding: 0.85rem 1.1rem;
    border-bottom: 1px solid rgba(51,65,85,0.45);
    transition: background 0.15s;
}
.activity-row:last-child { border-bottom: none; }
.activity-row:hover { background: rgba(255,255,255,0.025); }

.activity-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 7px rgba(34,197,94,0.55);
    flex-shrink: 0;
    margin-top: 4px;
}