:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --border: #e2e4e9;
  --primary: #2f6fed;
  --primary-text: #ffffff;
  --danger: #d1453b;
  --success: #1a8a4a;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181c;
    --card: #1f2226;
    --text: #eef0f2;
    --muted: #9aa1ab;
    --border: #30343a;
    --primary: #5b8def;
    --primary-text: #0e1116;
    --danger: #ef6b62;
    --success: #4ade80;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

header.top h1 {
  font-size: 1.25rem;
  margin: 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}

.warning {
  background: #fff4e5;
  border: 1px solid #f5c98a;
  color: #7a4b00;
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}

@media (prefers-color-scheme: dark) {
  .warning { background: #3a2c10; border-color: #6b4f14; color: #f2c973; }
}

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.tabs button {
  flex: 1;
  padding: 10px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: 0.95rem;
  cursor: pointer;
}

.tabs button.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

form.stack { display: flex; flex-direction: column; gap: 10px; }

label { font-size: 0.85rem; color: var(--muted); }

input, select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

.field { display: flex; flex-direction: column; gap: 4px; }

.btn {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  font-weight: 600;
}

.btn-text {
  background: none;
  border: none;
  color: var(--muted);
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1em;
}

.hint { color: var(--muted); font-size: 0.9rem; line-height: 1.5; }

.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.dash-header h2 { font-size: 1.05rem; margin: 0; }

.app-list { display: flex; flex-direction: column; gap: 10px; }

.app-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--card);
}

.app-row-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.app-label { font-weight: 600; }

.app-usage { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }

.app-row-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.app-row-form .btn { grid-column: span 1; }

.input-minutes { grid-column: span 1; }

.row-error { color: var(--danger); font-size: 0.82rem; margin-top: 6px; min-height: 1em; }
.row-error.is-success { color: var(--success); }

.app-row-simple {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}

.app-row-check {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

.app-row-check input { width: auto; padding: 0; flex-shrink: 0; }

.app-row-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex-shrink: 0;
  text-align: right;
}

.app-quota-badge { font-size: 0.85rem; font-weight: 600; white-space: nowrap; }

.app-quota-badge.muted { color: var(--muted); font-weight: 400; }

.app-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

#appFilter { flex: 2; }

#appSort { flex: 1; min-width: 0; }

.bulk-panel {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 6%, var(--card));
  margin-bottom: 10px;
}

#emptyState { text-align: center; color: var(--muted); padding: 24px 0; }

.card-title { font-size: 1.05rem; margin: 0 0 12px; }

.device-list { display: flex; flex-direction: column; gap: 8px; }

.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
}

.device-row.active {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, var(--card));
}

.device-row-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.device-row-main strong { font-size: 0.95rem; }

.device-row-edit { flex: 1; }

.device-row-edit .device-name-input { padding: 6px 8px; font-size: 0.9rem; }

.device-row-actions { display: flex; gap: 4px; flex-shrink: 0; }

.device-row-actions .btn { padding: 6px 10px; }

.code-stats-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 0 0 10px;
}

.code-stats-row #codeStats { margin: 0; margin-right: auto; }

.check-inline {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}

.check-inline input { width: auto; padding: 0; }

.free-time-days {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 10px 0;
}

.free-time-days label:has(#freeTimeAllDays) {
  margin-left: auto;
  font-weight: 600;
  padding-left: 14px;
  border-left: 1px solid var(--border);
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
  gap: 6px;
  max-height: 320px;
  overflow-y: auto;
}

.code-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  text-align: center;
}

.code-chip-code {
  font-family: monospace;
  font-size: 0.85rem;
}

.code-chip-meta,
.code-chip-device {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 0.68rem;
  line-height: 1.3;
  color: var(--muted);
  overflow-wrap: anywhere;
}

/* Tarih/saat + cihaz bilgisi sığması için kullanılan kod kutuları iki hücre genişliğinde. */
.code-chip.used {
  grid-column: span 2;
  opacity: 0.75;
}

.code-chip.used .code-chip-code {
  color: var(--muted);
  text-decoration: line-through;
}

footer.foot {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 24px;
}