:root {
    --bg-dark:       #0f1117;
    --bg-card:       #1a1d23;
    --bg-sidebar:    #131720;
    --bg-topbar:     #131720;
    --border-color:  #2d3142;
    --text-muted:    #8892a4;
    --sidebar-width: 240px;
    --topbar-height: 60px;
    --accent:        #6c5ce7;
    --accent-hover:  #5a4bd1;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    background: var(--bg-dark);
    color: #e2e8f0;
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-size: 14px;
    margin: 0;
}

/* ── SIDEBAR ── */
.sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform .25s ease;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: 1.2rem 1.25rem;
    font-size: 1rem;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    color: #fff;
    min-height: var(--topbar-height);
}
.sidebar-brand .bi { font-size: 1.4rem; color: var(--accent); }

.sidebar-menu { padding: .75rem 0; flex: 1; }

.sidebar-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .55rem 1.25rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    margin: 1px .5rem;
    transition: background .15s, color .15s;
    font-size: .875rem;
}
.sidebar-item:hover { background: rgba(108,92,231,.12); color: #fff; }
.sidebar-item.active { background: rgba(108,92,231,.2); color: var(--accent); font-weight: 600; }
.sidebar-item .bi { font-size: 1rem; width: 1.1rem; }

.sidebar-divider {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: #4a5568;
    padding: .85rem 1.25rem .25rem;
}

/* ── TOPBAR ── */
.topbar {
    position: fixed;
    top: 0; left: var(--sidebar-width); right: 0;
    height: var(--topbar-height);
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    z-index: 1030;
    transition: left .25s ease;
}
.topbar-title { font-size: .95rem; font-weight: 600; color: #fff; }

/* ── MAIN ── */
.main-wrapper { margin-left: var(--sidebar-width); transition: margin-left .25s ease; }

.content-area {
    padding: calc(var(--topbar-height) + 1.5rem) 1.5rem 1.5rem;
    min-height: 100vh;
}

/* ── CARDS ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: .875rem 1.25rem;
}

/* Stat cards */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: border-color .2s, transform .15s;
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.stat-card .icon {
    width: 48px; height: 48px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.stat-card .number { font-size: 1.6rem; font-weight: 700; line-height: 1; }
.stat-card .label  { font-size: .75rem; color: var(--text-muted); margin-top: .2rem; }

/* ── FORMS ── */
.form-control, .form-select {
    background: #0f1117;
    border-color: var(--border-color);
    color: #e2e8f0;
    font-size: .875rem;
}
.form-control:focus, .form-select:focus {
    background: #0f1117;
    border-color: var(--accent);
    color: #e2e8f0;
    box-shadow: 0 0 0 3px rgba(108,92,231,.15);
}
.form-control::placeholder { color: #4a5568; }
.form-label { font-size: .8rem; font-weight: 600; color: var(--text-muted); margin-bottom: .35rem; }
.input-group-text { background: #1a1d23; border-color: var(--border-color); color: var(--text-muted); }

/* ── BUTTONS ── */
.btn-primary   { background: var(--accent); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-sm { font-size: .78rem; padding: .3rem .65rem; }

/* ── TABLES ── */
.table { --bs-table-bg: transparent; --bs-table-striped-bg: rgba(255,255,255,.02); font-size: .85rem; }
.table th { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); border-color: var(--border-color); }
.table td { border-color: var(--border-color); vertical-align: middle; }
.table tbody tr:hover { background: rgba(108,92,231,.05); }
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
    background: #0f1117; border-color: var(--border-color); color: #e2e8f0; border-radius: 6px;
}
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate { font-size: .8rem; margin-top: .75rem; }
.page-link { background: var(--bg-card); border-color: var(--border-color); color: #e2e8f0; }
.page-item.active .page-link { background: var(--accent); border-color: var(--accent); }

/* ── MODALS ── */
.modal-content { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 14px; }
.modal-header { border-bottom-color: var(--border-color); }
.modal-footer { border-top-color: var(--border-color); }

/* ── BADGES ── */
.badge { font-size: .72rem; font-weight: 600; padding: .35em .65em; }

/* ── NAV TABS ── */
.nav-tabs { border-bottom-color: var(--border-color); }
.nav-tabs .nav-link { color: var(--text-muted); border-color: transparent; font-size: .85rem; }
.nav-tabs .nav-link.active { background: var(--bg-card); border-color: var(--border-color) var(--border-color) var(--bg-card); color: var(--accent); }

/* ── ALERTS ── */
.alert { border-radius: 10px; font-size: .875rem; }

/* ── SIDEBAR OVERLAY ── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 1039;
}

/* ── SIDEBAR COLLAPSED ── */
body.sidebar-collapsed .sidebar       { transform: translateX(-100%); }
body.sidebar-collapsed .topbar        { left: 0; }
body.sidebar-collapsed .main-wrapper  { margin-left: 0; }

/* ── RESPONSIVE ── */
@media (max-width: 991.98px) {
    .sidebar { transform: translateX(-100%); }
    .topbar  { left: 0; }
    .main-wrapper { margin-left: 0; }

    body.sidebar-open .sidebar         { transform: translateX(0); }
    body.sidebar-open .sidebar-overlay { display: block; }
}

@media (max-width: 575.98px) {
    .content-area { padding: calc(var(--topbar-height) + 1rem) .75rem .75rem; }
    .stat-card .number { font-size: 1.3rem; }
}

/* ── MISC ── */
.text-accent   { color: var(--accent); }
.bg-accent     { background: var(--accent); }
.border-accent { border-color: var(--accent) !important; }
.cursor-pointer { cursor: pointer; }

.icon-purple { background: rgba(108,92,231,.15); color: #a29bfe; }
.icon-green  { background: rgba(0,184,148,.15);  color: #00cec9; }
.icon-yellow { background: rgba(253,203,110,.15); color: #fdcb6e; }
.icon-red    { background: rgba(214,48,49,.15);   color: #ff7675; }
.icon-blue   { background: rgba(116,185,255,.15); color: #74b9ff; }
.icon-cyan   { background: rgba(0,206,201,.15);   color: #00cec9; }

.spinning { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* WhatsApp green */
.text-whatsapp { color: #25d366; }
.btn-whatsapp  { background: #25d366; border-color: #25d366; color: #fff; }
.btn-whatsapp:hover { background: #1ebe5d; border-color: #1ebe5d; color: #fff; }