/* Dark theme (default) */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-accent: #182a55;
  --text: #e8eefc;
  --muted: #a6b2cf;
  --border: #1f2b46;
  --green: #1f8a4c;
  --yellow: #b08a13;
  --red: #b13a3a;
  --btn: #2a3a62;
  --btn-primary: #3157b8;
  --btn-secondary: #24314f;
  --link: #9eb4e8;
  --focus: #35508b;
  --header-bg: rgba(15, 26, 46, 0.7);
  --card-bg: rgba(15, 26, 46, 0.75);
  --card-inner-bg: rgba(10, 18, 34, 0.55);
  --input-bg: rgba(8, 13, 24, 0.6);
  --slot-btn-bg: rgba(8, 13, 24, 0.65);
  --table-head-bg: rgba(8, 13, 24, 0.45);
  --table-row-hover: rgba(8, 13, 24, 0.25);
  --alert-error-bg: rgba(177, 58, 58, 0.18);
  --alert-error-border: rgba(177, 58, 58, 0.45);
  --alert-ok-bg: rgba(31, 138, 76, 0.14);
  --alert-ok-border: rgba(31, 138, 76, 0.45);
  --slot-available-bg: rgba(31, 138, 76, 0.12);
  --slot-available-border: rgba(31, 138, 76, 0.65);
  --slot-booked-bg: rgba(176, 138, 19, 0.12);
  --slot-booked-border: rgba(176, 138, 19, 0.75);
  --slot-unconfirmed-bg: rgba(255, 140, 0, 0.12);
  --slot-unconfirmed-border: rgba(255, 140, 0, 0.85);
  --test-banner-bg: rgba(177, 58, 58, 0.25);
  --test-banner-text: #ffd7d7;
  --test-banner-border: rgba(177, 58, 58, 0.55);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f0f4fa;
  --bg-accent: #c5d8f0;
  --text: #0f172a;
  --muted: #475569;
  --border: #cbd5e1;
  --green: #157a3d;
  --yellow: #8a6d0a;
  --red: #b91c1c;
  --btn: #e2e8f0;
  --btn-primary: #1d4ed8;
  --btn-secondary: #e2e8f0;
  --link: #1d4ed8;
  --focus: #2563eb;
  --header-bg: rgba(255, 255, 255, 0.92);
  --card-bg: rgba(255, 255, 255, 0.95);
  --card-inner-bg: rgba(241, 245, 249, 0.9);
  --input-bg: #ffffff;
  --slot-btn-bg: #ffffff;
  --table-head-bg: rgba(226, 232, 240, 0.9);
  --table-row-hover: rgba(226, 232, 240, 0.5);
  --alert-error-bg: rgba(185, 28, 28, 0.1);
  --alert-error-border: rgba(185, 28, 28, 0.35);
  --alert-ok-bg: rgba(21, 122, 61, 0.1);
  --alert-ok-border: rgba(21, 122, 61, 0.35);
  --slot-available-bg: rgba(21, 122, 61, 0.12);
  --slot-available-border: rgba(21, 122, 61, 0.55);
  --slot-booked-bg: rgba(138, 109, 10, 0.12);
  --slot-booked-border: rgba(138, 109, 10, 0.55);
  --slot-unconfirmed-bg: rgba(234, 88, 12, 0.12);
  --slot-unconfirmed-border: rgba(234, 88, 12, 0.65);
  --test-banner-bg: rgba(185, 28, 28, 0.12);
  --test-banner-text: #7f1d1d;
  --test-banner-border: rgba(185, 28, 28, 0.35);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% -10%, var(--bg-accent) 0%, var(--bg) 50%);
  color:var(--text);
}
a{color:var(--text); text-decoration:none}
.container{max-width:980px; margin:0 auto; padding:20px}
.header{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:12px;
  padding:14px 16px; border:1px solid var(--border);
  background: var(--header-bg); backdrop-filter: blur(10px);
  border-radius:14px;
}
.header-end{
  display:flex; align-items:center; flex-wrap:wrap; gap:10px 14px;
}
.test-banner{
  width:100%;
  background: var(--test-banner-bg);
  color: var(--test-banner-text);
  border-bottom: 1px solid var(--test-banner-border);
  padding:10px 16px;
  font-weight:700;
  text-align:center;
}
.brand{font-weight:700; letter-spacing:0.2px}
.nav{display:flex; align-items:center; flex-wrap:wrap; gap:4px 14px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--text)}
.theme-toggle{
  font-size:13px;
  min-height:40px;
  white-space:nowrap;
}
.main{margin-top:18px}
.card{
  border:1px solid var(--border);
  background: var(--card-bg);
  border-radius:16px;
  padding:18px;
}
.card h1{margin:0 0 12px 0; font-size:22px}
.card h2{margin:0 0 10px 0; font-size:16px}
.card-inner{
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px;
  margin-top:14px;
  background: var(--card-inner-bg);
}
.subtle{color:var(--muted); margin-top:4px}
.form .grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:12px;
}
label .label{font-size:12px; color:var(--muted); margin-bottom:6px}
input, select{
  width:100%;
  padding:10px 10px;
  border-radius:12px;
  border:1px solid var(--border);
  background: var(--input-bg);
  color:var(--text);
  outline:none;
}
input:focus, select:focus{border-color:var(--focus); box-shadow:0 0 0 2px color-mix(in srgb, var(--focus) 35%, transparent)}
.hint{font-size:12px; color:var(--muted); margin-top:6px}
.actions{margin-top:14px; display:flex; gap:10px; flex-wrap:wrap}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: var(--btn);
  color:var(--text);
  cursor:pointer;
  font:inherit;
}
.btn:hover{filter:brightness(1.08)}
[data-theme="light"] .btn:hover{filter:brightness(0.97)}
a.btn,
a.btn:visited{color:inherit}
.btn-primary,
a.btn-primary,
a.btn-primary:visited{background:var(--btn-primary); color:#fff; border-color:transparent}
.btn-secondary,
a.btn-secondary,
a.btn-secondary:visited{background:var(--btn-secondary); color:var(--text)}
.btn-danger,
a.btn-danger,
a.btn-danger:visited{background: var(--red); color:#fff; border-color:transparent}
.alert{
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  margin:10px 0 14px 0;
  font-size:14px;
}
.alert-error{background: var(--alert-error-bg); border-color: var(--alert-error-border)}
.alert-ok{background: var(--alert-ok-bg); border-color: var(--alert-ok-border)}

.slot-grid{
  display:grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap:10px;
  margin-top:14px;
}
.slot{margin:0}
.slot-btn{
  width:100%;
  padding:10px 10px;
  border-radius:14px;
  border:1px solid var(--border);
  background: var(--slot-btn-bg);
  color:var(--text);
  cursor:pointer;
  display:flex;
  flex-direction:column;
  gap:6px;
  text-align:left;
  font:inherit;
}
.slot-btn:disabled{opacity:0.55; cursor:not-allowed}
.slot-time{font-weight:700; font-size:14px}
.slot-meta{font-size:12px; color:var(--muted)}
.slot-available{border-color: var(--slot-available-border); background: var(--slot-available-bg)}
.slot-booked{border-color: var(--slot-booked-border); background: var(--slot-booked-bg)}
.slot-unconfirmed{border-color: var(--slot-unconfirmed-border); background: var(--slot-unconfirmed-bg)}
.admin-head{display:flex; align-items:center; justify-content:space-between; gap:10px}
.admin-aircraft-section{margin-bottom:20px}
.slots-heading{margin:8px 0 10px 0; font-size:16px; font-weight:600; color:var(--muted)}
.admin-table-wrap{
  overflow-x:auto;
  margin-top:10px;
  border:1px solid var(--border);
  border-radius:12px;
  -webkit-overflow-scrolling: touch;
}
.admin-table{
  width:100%;
  border-collapse:collapse;
  font-size:12px;
  table-layout:auto;
}
.admin-table th,
.admin-table td{
  padding:8px 10px;
  text-align:left;
  border-bottom:1px solid var(--border);
  vertical-align:top;
  white-space:normal;
  word-break:normal;
  overflow-wrap:normal;
}
.admin-table th{
  color:var(--muted);
  font-weight:600;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:0.04em;
  background: var(--table-head-bg);
  white-space:nowrap;
}
.admin-table tbody tr:last-child td{border-bottom:none}
.admin-table tbody tr:hover td{background: var(--table-row-hover)}
.insurance-declaration{margin-top:16px}
.insurance-declaration h2{margin:0 0 10px 0;font-size:16px}
.privacy-page .declaration-text{margin-top:0}
.privacy-link,.privacy-ack{margin-top:12px}
.privacy-link a,.privacy-ack a,.privacy-page a{color:var(--link); text-decoration:underline}
.privacy-link a:hover,.privacy-ack a:hover,.privacy-page a:hover{color:var(--text)}
.declaration-text{font-size:14px;line-height:1.5;color:var(--muted);margin:0 0 12px 0}
.declaration-text:last-child{margin-bottom:0}
.checkbox-label{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  cursor:pointer;
}
.checkbox-label input{margin-top:3px;flex-shrink:0}

@media (max-width: 860px){
  .form .grid{grid-template-columns: 1fr}
  .slot-grid{grid-template-columns: repeat(3, minmax(0, 1fr))}
}
@media (max-width: 420px){
  .slot-grid{grid-template-columns: repeat(2, minmax(0, 1fr))}
  .header-end{width:100%; justify-content:space-between}
}