:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #e2e8f0;
    --primary: #2563eb;
    --primary-soft: #dbeafe;
    --ok: #16a34a;
    --ok-soft: #dcfce7;
    --bad: #dc2626;
    --bad-soft: #fee2e2;
    --warn: #b45309;
    --warn-soft: #fef3c7;
    --radius: 14px;
    --shadow: 0 1px 2px rgba(15, 23, 42, .05), 0 4px 16px rgba(15, 23, 42, .04);
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0b1120;
        --card: #111827;
        --text: #e5e7eb;
        --muted: #94a3b8;
        --border: #1f2937;
        --primary: #60a5fa;
        --primary-soft: #1e3a5f;
        --ok-soft: #14532d;
        --bad-soft: #450a0a;
        --warn: #fbbf24;
        --warn-soft: #422006;
        --shadow: none;
    }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 Inter, system-ui, -apple-system, sans-serif; }
a { color: var(--primary); text-decoration: none; }
h1 { font-size: 24px; margin: 0; letter-spacing: -.02em; }
h2 { font-size: 17px; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
h3 { font-size: 14px; margin: 0 0 10px; display: flex; align-items: center; gap: 6px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { justify-content: center; }

.topbar { display: flex; align-items: center; gap: 24px; padding: 12px 24px; background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); }
.brand-mark { color: #f59e0b; }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { color: var(--muted); padding: 6px 12px; border-radius: 8px; font-weight: 500; }
.nav a.active, .nav a:hover { color: var(--text); background: var(--bg); }
.logout { display: flex; align-items: center; gap: 10px; margin: 0; }

.container { max-width: 1280px; margin: 0 auto; padding: 24px; }
.section { margin-top: 32px; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.section-head h2 { margin: 0; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.sticky-head { position: sticky; top: 57px; z-index: 15; background: var(--bg); padding: 12px 0; }
.app-title { display: flex; align-items: center; gap: 12px; }
.back { font-size: 26px; color: var(--muted); padding: 0 4px; }
.head-actions { display: flex; gap: 8px; align-items: center; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; margin-top: 16px; }
.empty { text-align: center; color: var(--muted); padding: 40px; }

.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 8px 14px; border-radius: 10px; font: inherit; font-weight: 500; cursor: pointer; }
.btn:hover { border-color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-danger { color: var(--bad); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.info { width: 20px; height: 20px; border-radius: 50%; border: 1px solid var(--border); background: var(--card); color: var(--muted); font: italic 600 12px Georgia, serif; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; flex: none; }
.info:hover { color: var(--primary); border-color: var(--primary); }

.alert { padding: 12px 14px; border-radius: 10px; margin: 8px 0; border: 1px solid transparent; }
.alert-ok { background: var(--ok-soft); color: var(--ok); }
.alert-err { background: var(--bad-soft); color: var(--bad); }
.alert-warn { background: var(--warn-soft); color: var(--warn); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); font-size: 11px; font-weight: 600; }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-ok { background: var(--ok-soft); color: var(--ok); }

/* uygulama listesi */
.app-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; margin-top: 16px; }
.app-card { display: flex; align-items: center; gap: 16px; color: var(--text); transition: transform .12s, border-color .12s; }
.app-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.app-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--primary-soft); display: flex; align-items: center; justify-content: center; font-size: 28px; flex: none; }
.app-icon.sm { width: 44px; height: 44px; font-size: 22px; border-radius: 12px; }
.app-info { flex: 1; min-width: 0; }
.app-name { font-weight: 700; font-size: 17px; }
.app-stats { display: flex; gap: 14px; margin-top: 8px; font-size: 13px; flex-wrap: wrap; }
.chev { font-size: 26px; color: var(--muted); }

/* KPI */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.kpi { text-align: left; font: inherit; color: inherit; cursor: pointer; transition: border-color .12s; padding: 16px; }
.kpi:hover { border-color: var(--primary); }
.kpi.static { cursor: default; }
.kpi.static:hover { border-color: var(--border); }
.kpi-label { color: var(--muted); font-size: 12px; font-weight: 500; min-height: 18px; }
.kpi-value { font-size: 26px; font-weight: 700; letter-spacing: -.02em; margin: 4px 0; }
.kpi-foot { display: flex; justify-content: space-between; gap: 8px; align-items: center; flex-wrap: wrap; }
.delta { font-size: 12px; font-weight: 600; }
.delta.up { color: var(--ok); }
.delta.down { color: var(--bad); }
.delta.flat { color: var(--muted); }
.ret-grid { grid-template-columns: repeat(5, 1fr); }
.ret-desc { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.habit-stats { display: flex; gap: 32px; margin-bottom: 8px; }

/* tablo */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.table th { color: var(--muted); font-weight: 600; font-size: 12px; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .total-row td { font-weight: 700; border-top: 2px solid var(--border); }
.heat { background: rgba(37, 99, 235, var(--a)); }
.cell-na { color: var(--muted); background: repeating-linear-gradient(45deg, transparent 0 6px, var(--border) 6px 7px); }

/* chip / tab */
.chip-group, .tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { border: 1px solid var(--border); background: var(--card); color: var(--muted); border-radius: 999px; padding: 4px 12px; font: inherit; font-size: 12px; cursor: pointer; }
.chip.on { color: var(--text); border-color: var(--c); box-shadow: inset 3px 0 0 var(--c); }
.tabs { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 3px; }
.tabs button { border: 0; background: transparent; padding: 6px 12px; border-radius: 8px; font: inherit; font-weight: 500; color: var(--muted); cursor: pointer; }
.tabs button.active { background: var(--primary); color: #fff; }
.chart-card canvas { width: 100% !important; }

/* tarih seçici */
.datepicker { position: relative; }
.dp-menu { position: absolute; right: 0; top: calc(100% + 6px); display: flex; gap: 16px; padding: 12px; z-index: 30; min-width: 420px; }
.dp-menu[hidden] { display: none; }
.dp-presets { display: flex; flex-direction: column; min-width: 150px; }
.dp-presets button { text-align: left; border: 0; background: none; padding: 7px 10px; border-radius: 8px; font: inherit; color: var(--text); cursor: pointer; }
.dp-presets button:hover { background: var(--bg); }
.dp-presets button.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.dp-custom { display: flex; flex-direction: column; gap: 8px; border-left: 1px solid var(--border); padding-left: 16px; }

/* form */
label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 13px; }
label.check { flex-direction: row; align-items: center; gap: 8px; }
input, select, textarea { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--text); }
textarea { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.hint { font-weight: 400; color: var(--muted); font-size: 12px; }
.login-wrap { min-height: 80vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 380px; display: flex; flex-direction: column; gap: 14px; }

/* kontrol listesi */
.checklist { display: flex; flex-direction: column; gap: 14px; }
.check-row { display: flex; gap: 12px; align-items: flex-start; }
.dot { width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex: none; }
.dot.ok { background: var(--ok-soft); color: var(--ok); }
.dot.bad { background: var(--warn-soft); color: var(--warn); }

/* açıklama penceresi */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, .45); }
.modal-card { position: relative; background: var(--card); border-radius: var(--radius); padding: 24px; width: min(720px, 100%); max-height: 88vh; overflow: auto; }
.modal-close { position: absolute; top: 10px; right: 14px; border: 0; background: none; font-size: 24px; color: var(--muted); cursor: pointer; }
.ex-row { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.ex-k { color: var(--muted); font-weight: 600; font-size: 12px; }
.ex-formula { font-weight: 600; }
.ex-table { margin: 12px 0; }
.ex-notes { padding-left: 18px; color: var(--text); }
.ex-notes li { margin: 6px 0; }
.ex-query pre { background: var(--bg); padding: 12px; border-radius: 8px; overflow: auto; font-size: 11px; max-height: 340px; }
.ex-query summary { cursor: pointer; color: var(--primary); font-weight: 500; }

.skeleton { background: linear-gradient(90deg, var(--card), var(--bg), var(--card)); background-size: 200% 100%; animation: sk 1.2s infinite; }
.skeleton-text { color: var(--muted); }
@keyframes sk { to { background-position: -200% 0; } }

@media (max-width: 760px) {
    .topbar { flex-wrap: wrap; gap: 8px; padding: 10px 16px; }
    .container { padding: 16px; }
    .ret-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .dp-menu { min-width: 0; flex-direction: column; right: auto; left: 0; }
    .dp-custom { border-left: 0; padding-left: 0; }
    .sticky-head { position: static; }
}
.kpi-grid > .alert { grid-column: 1 / -1; }
.nav { overflow-x: auto; white-space: nowrap; }