:root {
    --bg-primary:   #121829;
    --bg-sidebar:   #1E2235;
    --bg-card:      #252A3D;
    --bg-input:     #1A1F31;
    --accent:       #00D9B8;
    --accent-hover: #00b89a;
    --text-primary: #FFFFFF;
    --text-muted:   #8A92A9;
    --border-color: #2E3450;
    --danger:       #FF4D6A;
    --warning:      #FFB830;
    --success:      #00D9B8;
    --sidebar-w:    260px;
}

/* ===== Reset & Base ===== */
* { box-sizing: border-box; }
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    font-size: 14px;
}

/* ===== Auth Pages ===== */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at 20% 50%, rgba(0,217,184,0.08) 0%, transparent 60%),
                var(--bg-primary);
}
.auth-wrapper { width: 100%; max-width: 420px; padding: 16px; }
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 36px;
    box-shadow: 0 8px 48px rgba(0,0,0,0.5);
}
.auth-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 24px;
}
.auth-logo i { font-size: 26px; }
.auth-title { font-size: 22px; font-weight: 700; margin: 0 0 4px; }
.auth-sub    { color: var(--text-muted); margin-bottom: 24px; font-size: 13px; }
.auth-link   { text-align: center; margin-top: 20px; color: var(--text-muted); font-size: 13px; }
.auth-link a { color: var(--accent); text-decoration: none; font-weight: 600; }

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

.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 1000;
    transition: transform .3s;
    overflow-y: auto;
}
.sidebar-header {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    flex-shrink: 0;
}
.sidebar-header i { font-size: 22px; }

.sidebar-user {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.user-avatar {
    width: 40px; height: 40px;
    background: var(--accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #000; font-size: 18px; flex-shrink: 0;
}
.user-name  { font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-email { font-size: 11px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sidebar-nav { padding: 12px 0; flex: 1; }
.nav-section-label {
    font-size: 10px; font-weight: 700; letter-spacing: 1.2px;
    color: var(--text-muted); text-transform: uppercase;
    padding: 12px 20px 4px;
}
.sidebar-link {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 20px;
    color: var(--text-muted);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: all .2s;
    font-size: 13px;
    font-weight: 500;
}
.sidebar-link i { width: 18px; text-align: center; font-size: 15px; }
.sidebar-link:hover, .sidebar-link.active {
    color: var(--text-primary);
    background: rgba(0,217,184,0.07);
    border-left-color: var(--accent);
}
.sidebar-link.active { color: var(--accent); }

.sidebar-footer {
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

/* ===== Main Content ===== */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.topbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky; top: 0; z-index: 100;
}
.topbar-title { font-size: 18px; font-weight: 700; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.page-content { padding: 24px; flex: 1; }

/* ===== 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);
    padding: 16px 20px;
    display: flex; align-items: center; justify-content: space-between;
}
.card-body { padding: 20px; }

/* Stat Cards */
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex; align-items: center; gap: 16px;
    transition: transform .2s, box-shadow .2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.stat-icon {
    width: 52px; height: 52px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; flex-shrink: 0;
}
.stat-icon.teal    { background: rgba(0,217,184,0.15); color: var(--accent); }
.stat-icon.blue    { background: rgba(59,130,246,0.15); color: #3B82F6; }
.stat-icon.purple  { background: rgba(139,92,246,0.15); color: #8B5CF6; }
.stat-icon.orange  { background: rgba(249,115,22,0.15); color: #F97316; }
.stat-icon.red     { background: rgba(239,68,68,0.15);  color: #EF4444; }
.stat-icon.yellow  { background: rgba(234,179,8,0.15);  color: #EAB308; }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ===== Tables ===== */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}
.table thead th {
    background: rgba(255,255,255,0.04);
    color: var(--text-muted);
    font-size: 11px; font-weight: 700; letter-spacing: .8px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    white-space: nowrap;
}
.table tbody td { padding: 12px 16px; border-color: var(--border-color); vertical-align: middle; }
.table-hover tbody tr:hover td { background: rgba(255,255,255,0.03); cursor: pointer; }
.table-striped>tbody>tr:nth-of-type(odd)>* { background: rgba(255,255,255,0.02); color: var(--text-primary); }

/* ===== Badges ===== */
.badge-status {
    padding: 4px 10px; border-radius: 20px;
    font-size: 11px; font-weight: 600; letter-spacing: .4px;
    display: inline-block;
}
.badge-active   { background: rgba(0,217,184,0.15); color: var(--accent); }
.badge-expiring { background: rgba(255,184,48,0.15); color: var(--warning); }
.badge-expired  { background: rgba(255,77,106,0.15); color: var(--danger); }
.badge-income   { background: rgba(0,217,184,0.15); color: var(--accent); }
.badge-expense  { background: rgba(255,77,106,0.15); color: var(--danger); }

/* ===== Forms ===== */
.form-label { color: var(--text-muted); font-size: 12px; font-weight: 600; letter-spacing: .5px; text-transform: uppercase; margin-bottom: 6px; }
.form-control, .form-select {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 10px 14px;
}
.form-control:focus, .form-select:focus {
    background: var(--bg-input);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(0,217,184,0.15);
}
.form-control::placeholder { color: var(--text-muted); }
.input-group-text {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}
.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-color);
}
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }

/* ===== Buttons ===== */
.btn-primary {
    background: var(--accent); border-color: var(--accent);
    color: #000; font-weight: 600; border-radius: 8px;
    transition: background .2s, transform .1s;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #000; }
.btn-primary:active { transform: scale(.97); }
.btn-outline-secondary {
    border-color: var(--border-color); color: var(--text-muted); border-radius: 8px;
}
.btn-outline-secondary:hover { background: var(--bg-input); color: var(--text-primary); border-color: var(--text-muted); }
.btn-outline-danger  { border-radius: 8px; }
.btn-outline-warning { border-radius: 8px; }
.btn-danger  { border-radius: 8px; }
.btn-warning { border-radius: 8px; color: #000; font-weight: 600; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ===== Modal ===== */
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
}
.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: rgba(255,255,255,0.03);
    border-radius: 14px 14px 0 0;
}
.modal-footer { border-top: 1px solid var(--border-color); }
.btn-close { filter: invert(1); }
.modal-title { font-weight: 700; }

/* ===== Search / Filter bar ===== */
.filter-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.search-input {
    flex: 1; min-width: 200px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 8px 14px;
}
.search-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,217,184,0.12); }

/* ===== Days badge ===== */
.days-badge {
    font-size: 12px; font-weight: 700;
    padding: 3px 8px; border-radius: 6px;
    display: inline-block;
}
.days-ok      { background: rgba(0,217,184,0.12); color: var(--accent); }
.days-warn    { background: rgba(255,184,48,0.12); color: var(--warning); }
.days-danger  { background: rgba(255,77,106,0.12); color: var(--danger); }

/* ===== Alerts ===== */
.alert { border-radius: 10px; border: none; font-size: 13px; }
.alert-danger  { background: rgba(255,77,106,0.12);  color: #FF8FA3; }
.alert-success { background: rgba(0,217,184,0.12);   color: var(--accent); }
.alert-warning { background: rgba(255,184,48,0.12);  color: var(--warning); }
.alert-info    { background: rgba(59,130,246,0.12);  color: #93C5FD; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ===== DataTables ===== */
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
    background: var(--bg-input) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 6px !important;
    padding: 5px 10px !important;
}
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate .paginate_button,
.dataTables_wrapper .dataTables_filter label,
.dataTables_wrapper .dataTables_length label { color: var(--text-muted) !important; }
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--accent) !important;
    color: #000 !important;
    border-radius: 6px !important;
    border: none !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--bg-input) !important;
    color: var(--text-primary) !important;
    border: none !important;
    border-radius: 6px !important;
}

/* ===== Chart container ===== */
.chart-wrapper { position: relative; height: 260px; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .page-content { padding: 16px; }
}

/* ===== Hamburger button ===== */
.btn-hamburger {
    display: none; background: none; border: none; color: var(--text-primary); font-size: 20px;
}
@media (max-width: 768px) { .btn-hamburger { display: block; } }

/* ===== Tabs ===== */
.nav-tabs { border-bottom: 1px solid var(--border-color); }
.nav-tabs .nav-link {
    color: var(--text-muted);
    border: none; border-bottom: 2px solid transparent;
    background: none;
    border-radius: 0;
    font-size: 13px;
    padding: 10px 18px;
}
.nav-tabs .nav-link:hover { color: var(--text-primary); }
.nav-tabs .nav-link.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: none;
}

/* ===== Summary row ===== */
.summary-row {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px 20px;
    display: flex; gap: 32px; flex-wrap: wrap;
    margin-bottom: 20px;
}
.summary-item .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .6px; }
.summary-item .value { font-size: 22px; font-weight: 700; margin-top: 2px; }

/* empty state */
.empty-state {
    text-align: center; padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state i { font-size: 48px; margin-bottom: 16px; color: var(--border-color); }
.empty-state p  { font-size: 15px; margin: 0; }