:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #687086;
  --border: #e3e7ef;
  --primary: #1f6feb;
  --primary-dark: #1559c8;
  --success: #21845a;
  --danger: #c93c37;
  --warning: #b7791f;
  --info: #256f9c;
  --shadow: 0 12px 32px rgba(23, 32, 51, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 22px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 18px rgba(23,32,51,.04);
}
.brand { font-weight: 800; color: var(--text); white-space: nowrap; font-size: 18px; }
.nav { display: flex; flex: 1; gap: 6px; overflow-x: auto; }
.nav a { color: var(--muted); padding: 8px 10px; border-radius: 10px; white-space: nowrap; font-weight: 600; font-size: 14px; }
.nav a:hover { color: var(--primary); background: #eef5ff; text-decoration: none; }
.userbox { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; white-space: nowrap; }

.container { max-width: 1240px; margin: 0 auto; padding: 26px 20px 60px; }
.login-container { display: grid; min-height: 100vh; place-items: center; }
.login-card { width: min(430px, 100%); background: var(--card); padding: 34px; border-radius: 24px; box-shadow: var(--shadow); }
.login-card h1 { margin: 0 0 8px; }
.login-card p { color: var(--muted); margin: 0 0 24px; }
.hint { margin-top: 18px; color: var(--muted); background: #f6f8ff; border: 1px solid var(--border); padding: 12px; border-radius: 14px; font-size: 14px; }

.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.page-head h1 { margin: 0 0 6px; font-size: 30px; letter-spacing: -0.02em; }
.page-head p { margin: 0; color: var(--muted); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.actions.end { justify-content: flex-end; margin-top: 20px; }

.card, .school-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin-top: 0; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card-head h2 { margin: 0; }
.hidden { display: none !important; }
.empty { color: var(--muted); text-align: center; padding: 18px; }
.small-text { font-size: 13px; color: var(--muted); max-width: 340px; }
.text-danger { color: var(--danger); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  min-height: 40px;
}
.btn:hover { text-decoration: none; border-color: #cbd4e1; background: #f8fafc; }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-dark); }
.btn.success { background: var(--success); color: #fff; border-color: var(--success); }
.btn.info { background: var(--info); color: #fff; border-color: var(--info); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.ghost { background: transparent; }
.btn.full { width: 100%; }
.btn.small { padding: 7px 10px; min-height: 32px; font-size: 13px; }
.btn.tiny { padding: 4px 8px; min-height: 28px; font-size: 12px; }

.form label { display: flex; flex-direction: column; gap: 6px; font-weight: 700; font-size: 14px; color: #30384d; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
  color: var(--text);
}
textarea { min-height: 84px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid #b7d2ff; border-color: var(--primary); }
.grid-form { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.grid-form .wide { grid-column: 1 / -1; }
.inline-form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.inline-form input { min-width: 220px; flex: 1; }
.filters { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.filters input, .filters select { max-width: 280px; }

.flash-wrap { display: grid; gap: 8px; margin-bottom: 18px; }
.flash { border-radius: 14px; padding: 12px 14px; font-weight: 700; }
.flash.success { background: #e9f8f1; color: #176946; border: 1px solid #b9ecd4; }
.flash.danger { background: #fff1f0; color: #a3322d; border: 1px solid #ffd4d1; }
.flash.warning { background: #fff7e7; color: #905d12; border: 1px solid #ffe2a8; }

.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 20px; }
.stats-grid.compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 16px; box-shadow: var(--shadow); }
.stat span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.stat strong { font-size: 22px; letter-spacing: -0.02em; }
.stat.success strong { color: var(--success); }
.stat.danger strong { color: var(--danger); }
.stat.info strong { color: var(--info); }

.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.cards-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.school-card { display: block; color: var(--text); transition: transform .15s ease, box-shadow .15s ease; }
.school-card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 16px 36px rgba(23,32,51,.12); }
.school-top { display: flex; justify-content: space-between; gap: 10px; align-items: start; }
.school-top h2 { margin: 0; font-size: 20px; }
.school-top span { color: var(--muted); background: #f2f5fa; padding: 5px 9px; border-radius: 999px; font-size: 12px; }
.school-card p { color: var(--muted); }
.mini-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.mini-stats span { display: flex; flex-direction: column; background: #f8fafc; border: 1px solid var(--border); padding: 10px; border-radius: 12px; color: var(--muted); font-size: 12px; }
.mini-stats b { color: var(--text); font-size: 15px; margin-top: 4px; }
.mini-stats .balance b { color: var(--danger); }

.table-wrap { width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 11px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: #3b4458; font-size: 13px; background: #f8fafc; }
tfoot th { background: #fff; font-size: 15px; }
.editable-table select { min-width: 260px; }
.editable-table input { min-width: 110px; }
.line-total { font-weight: 800; white-space: nowrap; }
.form-total { text-align: right; font-size: 20px; margin-top: 18px; }

.list { display: grid; gap: 8px; }
.list-row { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; align-items: center; color: var(--text); border: 1px solid var(--border); border-radius: 14px; padding: 12px; background: #fff; }
.list-row:hover { background: #f8fbff; text-decoration: none; }
.list-row small { display: block; color: var(--muted); margin-top: 4px; }

.status { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-weight: 800; font-size: 12px; white-space: nowrap; }
.status.ok { background: #e9f8f1; color: #176946; }
.status.partial { background: #fff7e7; color: #905d12; }
.status.open { background: #fff1f0; color: #a3322d; }
.status.return { background: #eaf5ff; color: #1f5c86; }
.status.cancel { background: #eef0f4; color: #5b6476; }

.receipt { color: #111827; }
.receipt-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; border-bottom: 2px solid var(--border); padding-bottom: 16px; margin-bottom: 16px; }
.receipt-top h2 { margin: 0 0 4px; }
.receipt-top p { margin: 0; color: var(--muted); }
.receipt-no { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.info-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-bottom: 18px; }
.info-grid div { background: #f8fafc; border: 1px solid var(--border); padding: 10px; border-radius: 12px; }
.info-grid span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.sign-row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 60px; }
.sign-row div { border-top: 1px solid #111827; padding-top: 10px; text-align: center; }
.print-only { display: none; }
.alert.danger { background: #fff1f0; color: #a3322d; border: 1px solid #ffd4d1; padding: 12px; border-radius: 12px; }
.danger-zone { border-color: #ffd4d1; }
.selected-box { background: #f8fbff; border-color: #cfe2ff; }

@media (max-width: 1000px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .userbox { width: 100%; justify-content: space-between; }
  .stats-grid, .stats-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-two { grid-template-columns: 1fr; }
  .grid-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .container { padding: 18px 12px 40px; }
  .page-head { flex-direction: column; }
  .stats-grid, .stats-grid.compact, .cards-grid, .grid-form { grid-template-columns: 1fr; }
  .list-row { grid-template-columns: 1fr; }
  .filters input, .filters select { max-width: none; }
  .filters, .actions, .inline-form { width: 100%; }
  .btn { width: 100%; }
}

@media print {
  body { background: white; }
  .no-print, .topbar, .flash-wrap { display: none !important; }
  .container { max-width: none; padding: 0; }
  .card, .stat { box-shadow: none; border-color: #d1d5db; }
  .print-only { display: grid; }
  table { min-width: 0; font-size: 12px; }
  th, td { padding: 6px; }
  .receipt { border: none; padding: 0; }
}

/* v2 küçük düzenlemeler */
.muted-row { opacity: .58; text-decoration: line-through; }
.mini-cancel { display: flex; gap: 6px; align-items: center; min-width: 180px; }
.mini-cancel input { min-width: 95px; padding: 7px 8px; border: 1px solid var(--border); border-radius: 9px; }
.btn.tiny { padding: 6px 8px; font-size: 12px; border-radius: 9px; }
.notice { background: #f8fbff; border: 1px solid #cfe2ff; color: #24415f; padding: 12px; border-radius: 12px; }
/* v2.2 mobil menü düzeni */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  padding: 9px 12px;
  font-weight: 800;
  cursor: pointer;
  min-height: 40px;
}

@media (max-width: 760px) {
  .topbar {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
  }

  .brand {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 16px;
  }

  .mobile-menu-btn {
    display: inline-flex;
    width: auto;
  }

  .nav,
  .userbox {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
  }

  .topbar.menu-open .nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    overflow: visible;
    padding-top: 8px;
  }

  .topbar.menu-open .nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 8px;
    background: #f8fafc;
    border: 1px solid var(--border);
    text-align: center;
    white-space: normal;
    font-size: 13px;
  }

  .topbar.menu-open .userbox {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding-top: 4px;
  }

  .topbar.menu-open .userbox span {
    text-align: center;
    white-space: normal;
  }

  .topbar.menu-open .userbox .btn {
    width: 100%;
  }

  .container {
    padding-top: 14px;
  }

  .card,
  .school-card,
  .login-card {
    border-radius: 16px;
    padding: 16px;
  }

  .page-head h1 {
    font-size: 24px;
  }

  .stat strong {
    font-size: 19px;
  }

  .table-wrap {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: #fff;
  }

  table {
    min-width: 680px;
  }
}

@media (max-width: 420px) {
  .topbar.menu-open .nav {
    grid-template-columns: 1fr;
  }
}