/* =========================
   1) Reset + Temel
========================= */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

/* =========================
   2) Tema Değişkenleri
   - <html data-theme="dark"> ile dark'a geç
========================= */
:root{
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f1f4fa;
  --text: #0f172a;
  --muted: #64748b;
  --border: rgba(15, 23, 42, 0.10);
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);

  --primary: #2563eb;
  --primary-2: rgba(37, 99, 235, 0.12);

  --good: #16a34a;
  --good-2: rgba(22, 163, 74, 0.12);

  --warn: #f59e0b;
  --warn-2: rgba(245, 158, 11, 0.14);

  --danger: #ef4444;
  --danger-2: rgba(239, 68, 68, 0.14);

  --radius: 16px;
  --radius-sm: 12px;
  --gap: 16px;
}

html[data-theme="dark"]{
  --bg: #0b1220;
  --surface: #0f1a2f;
  --surface-2: #1e293b;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.2);
  --shadow: 0 18px 40px rgba(0,0,0,0.4);

  --primary: #60a5fa;
  --primary-2: rgba(96, 165, 250, 0.2);

  --good: #4ade80;
  --good-2: rgba(74, 222, 128, 0.2);

  --warn: #fbbf24;
  --warn-2: rgba(251, 191, 36, 0.2);

  --danger: #f87171;
  --danger-2: rgba(248, 113, 113, 0.2);
}

/* =========================
   3) Layout
========================= */
.app { min-height: 100vh; }

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 18px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 230px;
}
.logo{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: radial-gradient(circle at 30% 30%, var(--primary), color-mix(in srgb, var(--primary) 40%, #111));
  box-shadow: 0 12px 24px color-mix(in srgb, var(--primary) 20%, transparent);
}
.brand-title{
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--text);
}

.nav{
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  overflow: auto;
  padding: 6px 4px;
}
.nav-link{
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  white-space: nowrap;
}
.nav-link:hover{
  background: var(--surface-2);
  color: var(--text);
}
.nav-link.active{
  color: var(--primary);
  background: var(--primary-2);
}

.topbar-right{
  display: flex;
  align-items: center;
  gap: 12px;
}

.container{
  width: min(1220px, calc(100% - 32px));
  margin: 18px auto 40px;
}

.grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gap);
}

.card-span-12{ grid-column: span 12; }
.card-span-8 { grid-column: span 8; }
.card-span-6 { grid-column: span 6; }
.card-span-4 { grid-column: span 4; }
.card-span-3 { grid-column: span 3; }

@media (max-width: 980px){
  .brand{ min-width: auto; }
  .card-span-8, .card-span-6, .card-span-4, .card-span-3 { grid-column: span 12; }
}

/* =========================
   4) Card
========================= */
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  overflow: hidden;
}

.card-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.card h3{
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.2px;
  color: var(--text);
}

.card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 12px 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.2px;
  color: var(--text);
}

.muted{ color: var(--muted); }

/* =========================
   5) Buttons
========================= */
.btn{
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:hover{ filter: brightness(0.98); }

.btn-primary{
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
  background: var(--primary);
  color: #fff;
  box-shadow: 0 16px 30px color-mix(in srgb, var(--primary) 20%, transparent);
}

.btn-outline{
  background: var(--surface-2);
}

.btn-ghost{
  background: var(--surface-2);
}

.btn-chip{
  border-radius: 999px;
  padding: 10px 14px;
}

.btn-success { background: var(--good); color: #fff; border-color: var(--good); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }

/* =========================
   6) Form
========================= */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
}
.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  background: var(--surface);
  color: var(--text);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-2);
}
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--gap);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
  align-items: flex-end;
}
.filter-bar .form-group { margin-bottom: 0; }

/* =========================
   7) Badge / Pill
========================= */
.badge{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  min-width: 42px;
  padding: 0 10px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.badge-good{
  color: var(--good);
  background: var(--good-2);
  border-color: color-mix(in srgb, var(--good) 25%, var(--border));
}

.pill{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 12px;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.pill-good{ color: var(--good); background: var(--good-2); border-color: color-mix(in srgb, var(--good) 22%, var(--border)); }
.pill-warn{ color: var(--warn); background: var(--warn-2); border-color: color-mix(in srgb, var(--warn) 22%, var(--border)); }
.pill-danger{ color: var(--danger); background: var(--danger-2); border-color: color-mix(in srgb, var(--danger) 22%, var(--border)); }

.badge-paid, .badge-success { color: var(--good); background: var(--good-2); border-color: color-mix(in srgb, var(--good) 25%, var(--border)); }
.badge-pending { color: var(--warn); background: var(--warn-2); border-color: color-mix(in srgb, var(--warn) 25%, var(--border)); }
.badge-partial { color: var(--primary); background: var(--primary-2); border-color: color-mix(in srgb, var(--primary) 25%, var(--border)); }

.badge { min-width: auto; height: auto; padding: 4px 10px; font-size: 12px; }

/* =========================
   8) KPI / Stat kartları
========================= */
.kpi, .stat-card, .summary-box{
  position: relative;
  padding: 16px 16px 16px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.kpi::before, .stat-card::before, .summary-box::before{
  content:"";
  position:absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 4px;
  border-radius: 999px;
  background: var(--primary);
  opacity: 0.9;
}
.kpi-label, .stat-card .stat-label, .summary-box .summary-label{
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}
.kpi-value, .stat-card .stat-value, .summary-box .summary-value{
  margin-top: 8px;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -0.4px;
  color: var(--text);
}

.kpi-good::before, .stat-card.stat-income::before, .summary-box.success::before{ background: var(--good); }
.kpi-danger::before, .stat-card.stat-expenses::before, .summary-box.danger::before{ background: var(--danger); }
.kpi-warn::before{ background: var(--warn); }
.stat-card.stat-locations::before{ background: var(--primary); }
.stat-card.stat-personnel::before{ background: var(--primary); opacity: 0.7; }
.stat-card.stat-ciro::before{ background: var(--muted); }

.stat-cards, .summary-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap);
  margin-bottom: var(--gap);
}

.stat-card .stat-link, .summary-box a {
  font-size: 13px;
  color: var(--primary);
  text-decoration: none;
  margin-top: 8px;
  display: inline-block;
}
.stat-card .stat-link:hover { text-decoration: underline; }

.stat-card .stat-value.stat-success, .summary-box.success .summary-value { color: var(--good); }
.stat-card .stat-value.stat-danger, .summary-box.danger .summary-value { color: var(--danger); }

/* =========================
   9) Table
========================= */
.table-wrap{
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.table{
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}
.table thead th{
  text-align: left;
  font-size: 12px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 85%, transparent);
  padding: 12px;
  border-bottom: 1px solid var(--border);
}
.table tbody td{
  padding: 12px;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
}
.table tbody tr:hover{
  background: color-mix(in srgb, var(--primary-2) 55%, transparent);
}

/* =========================
   10) Alerts
========================= */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--gap);
}
.alert-success { background: var(--good-2); color: var(--text); }
.alert-danger { background: var(--danger-2); color: var(--text); }
.alert-warning { background: var(--warn-2); color: var(--text); }

/* =========================
   11) Utility
========================= */
.page-header { margin-bottom: var(--gap); }
.page-header h1 { font-size: 1.5rem; font-weight: 700; margin: 0 0 8px 0; color: var(--text); }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 16px; }
.mt-2 { margin-top: 8px; }
.text-right { text-align: right; }
.text-success { color: var(--good); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--muted); font-size: 14px; }

/* =========================
   12) Cards stack / Dashboard
========================= */
.cards-stack {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.filter-bar-card .filter-bar { margin-bottom: 0; }

/* =========================
   13) Preview modal
========================= */
.preview-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.preview-modal > div {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 95vw;
  max-height: 95vh;
  overflow: auto;
  position: relative;
}

.receipt-preview { overflow: auto; max-width: 100%; }

/* =========================
   14) Login page
========================= */
.login-page .container {
  max-width: 420px;
  margin-top: 3rem;
}
.login-page .card { padding: 24px; }
.login-page .btn-primary { width: 100%; }

/* =========================
   15) Responsive
========================= */
@media (max-width: 768px) {
  .topbar { flex-direction: column; height: auto; padding: 12px; }
  .nav { flex-wrap: wrap; justify-content: center; }
  .container { width: calc(100% - 16px); margin: 12px auto 24px; }
  .form-row { grid-template-columns: 1fr; }
  .stat-cards, .summary-row { grid-template-columns: 1fr; }
  .table { min-width: 400px; }
}