:root {
  --background: #f3f6fa;
  --surface: #ffffff;
  --surface-muted: #edf3f9;
  --surface-elevated: #ffffff;
  --primary: #0b3157;
  --primary-hover: #082744;
  --primary-light: #2f80ed;
  --accent-soft: #e8f2ff;
  --text: #172033;
  --text-muted: #667085;
  --border: #d8e0ea;
  --border-strong: #b8c5d3;
  --danger: #b42318;
  --success: #18794e;
  --warning: #9a6700;
  --shadow: 0 10px 30px rgba(13, 59, 102, .08);
  --shadow-elevated: 0 16px 42px rgba(11, 49, 87, .16);
  --shadow-control: 0 3px 12px rgba(11, 49, 87, .14);
  --radius: 14px;
  --radius-small: 8px;
  --radius-medium: 11px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --control-height: 44px;
  --control-height-compact: 38px;
  --sidebar-width: 248px;
  --transition: 160ms ease;
}

* { box-sizing: border-box; }
html { color-scheme: light; }
body { margin: 0; min-height: 100vh; background: var(--background); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.5; }

/* RushOps is an application surface: keep native selection and iOS callouts
   disabled everywhere except inside genuine text-editing controls. */
html,
body,
body * {
  -webkit-user-select: none !important;
  -moz-user-select: none !important;
  user-select: none !important;
  -webkit-touch-callout: none !important;
}

body :is(
  input,
  textarea,
  [contenteditable=""],
  [contenteditable="true"],
  [contenteditable="plaintext-only"]
),
body :is(
  [contenteditable=""],
  [contenteditable="true"],
  [contenteditable="plaintext-only"]
) * {
  -webkit-user-select: text !important;
  -moz-user-select: text !important;
  user-select: text !important;
  -webkit-touch-callout: default !important;
}

img,
svg {
  -webkit-user-drag: none;
}

button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: var(--primary-light); }
img { max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid rgba(47, 128, 237, .4); outline-offset: 3px; }

.app-shell { min-height: 100vh; }
.sidebar { position: fixed; inset: 0 auto 0 0; z-index: 10; display: flex; width: var(--sidebar-width); flex-direction: column; gap: 22px; padding: 28px 18px; overflow-y: auto; background: var(--primary); color: white; }
.brand { padding: 0 10px; color: white; font-size: 1.25rem; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.sidebar-nav { display: grid; gap: 6px; }
.nav-resource-group { display: grid; gap: 6px; margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.18); }
.nav-section-label { padding: 0 12px; color: rgba(255,255,255,.52); font-size: .68rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.nav-link { display: flex; min-height: 48px; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px; color: rgba(255,255,255,.74); font-weight: 650; text-decoration: none; transition: background var(--transition), color var(--transition); }
.nav-link:hover, .nav-link.is-active { background: rgba(255,255,255,.12); color: white; }
.nav-icon { display: grid; width: 24px; place-items: center; font-size: 1.1rem; }
.sidebar-user { display: grid; gap: 3px; margin-top: auto; padding: 14px; border-top: 1px solid rgba(255,255,255,.15); }
.sidebar-user small { overflow: hidden; color: rgba(255,255,255,.68); text-overflow: ellipsis; }
.sidebar-user .button { margin-top: 10px; color: white; border-color: rgba(255,255,255,.28); }
.platform-home-nav { display:flex; min-height:42px; align-items:center; justify-content:center; padding:8px 12px; border:1px solid rgba(255,255,255,.22); border-radius:10px; color:#fff; font-size:.82rem; font-weight:700; text-decoration:none; }
.platform-home-nav:hover { background:rgba(255,255,255,.1); }
.mobile-nav { display: none; }
@media (max-height: 760px) and (min-width: 761px) {
  .sidebar { gap: 14px; padding-block: 18px; }
  .nav-link { min-height: 42px; padding-block: 7px; }
  .nav-resource-group { margin-top: 8px; padding-top: 10px; }
  .sidebar-user { padding-block: 10px; }
}
.main-content { min-height: 100vh; margin-left: var(--sidebar-width); padding: 32px clamp(24px, 4vw, 56px) 48px; }
.content-wrap { width: min(1120px, 100%); margin: 0 auto; }
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 26px; }
.page-header h1 { margin: 0; color: var(--primary); font-size: clamp(1.7rem, 3vw, 2.35rem); letter-spacing: -.035em; }
.page-header p { margin: 5px 0 0; color: var(--text-muted); }
.card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px; padding: 9px 16px; border: 1px solid transparent; border-radius: 9px; background: var(--primary); color: white; font-weight: 700; text-decoration: none; cursor: pointer; transition: transform var(--transition), background var(--transition), border-color var(--transition); }
.button:hover:not(:disabled) { background: var(--primary-hover); transform: translateY(-1px); }
.button:disabled { cursor: not-allowed; opacity: .55; }
.button--secondary { background: var(--primary-light); }
.button--ghost { border-color: var(--border); background: transparent; color: var(--primary); }
.button--ghost:hover:not(:disabled) { background: var(--surface-muted); }
.button--danger { background: var(--danger); }
.button--danger-ghost { border-color: #f1c8c4; background: transparent; color: var(--danger); }
.button--small { min-height: 38px; padding: 7px 12px; font-size: .88rem; }
.badge { display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 999px; background: var(--accent-soft); color: #1554a2; font-size: .75rem; font-weight: 800; }
.safety-notice { margin: 26px 0 0; padding: 13px 16px; border-left: 4px solid var(--primary-light); border-radius: 6px; background: var(--accent-soft); color: #24466b; font-size: .88rem; }
.site-footer { padding: 24px 0 8px; color: var(--text-muted); font-size: .8rem; text-align: center; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; gap: 7px; }
.field--wide { grid-column: 1 / -1; }
.field label, .field-label { color: #344054; font-size: .88rem; font-weight: 700; }
.field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; background: white; color: var(--text); transition: border var(--transition), box-shadow var(--transition); }
.field textarea { min-height: 96px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(47,128,237,.13); outline: none; }
.field input[readonly] { background: var(--surface-muted); color: var(--text-muted); }
.checkbox-field { display: flex; align-items: center; gap: 9px; }
.checkbox-field input { width: 20px; height: 20px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }
.image-setting{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;margin-top:24px;padding:16px;border-top:1px solid var(--border);border-radius:9px;background:var(--surface-muted,#f6f8fb)}.image-setting h2,.image-setting h3{margin:0 0 4px;color:var(--primary);font-size:1rem}.image-setting p{margin:0;color:var(--text-muted);font-size:.8rem}.image-setting__preview{grid-column:2;width:150px;height:70px;object-fit:contain;border:1px solid var(--border);border-radius:7px;background:#fff}.image-setting__preview--aircraft{height:92px;object-fit:cover}.image-setting__actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:8px}@media(max-width:560px){.image-setting{grid-template-columns:1fr}.image-setting__preview{grid-column:1;width:100%;max-width:220px}}
.form-message { margin: 0 0 16px; padding: 10px 12px; border-radius: 8px; font-size: .9rem; }
.form-message--error { background: #fef3f2; color: var(--danger); }
.form-message--success { background: #ecfdf3; color: var(--success); }
.loading-overlay { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; background: rgba(243,246,250,.88); backdrop-filter: blur(2px); }
.loading-box { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-radius: 12px; background: white; box-shadow: var(--shadow); font-weight: 700; }
.spinner { width: 22px; height: 22px; border: 3px solid var(--border); border-top-color: var(--primary-light); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.toast-region { position: fixed; z-index: 200; right: 20px; bottom: 20px; display: grid; gap: 10px; width: min(360px, calc(100vw - 40px)); }
.toast { padding: 13px 16px; border-radius: 9px; background: var(--primary); color: white; box-shadow: var(--shadow); }
.toast--success { background: var(--success); }
.toast--error { background: var(--danger); }
dialog { width: min(720px, calc(100vw - 28px)); max-height: calc(100vh - 40px); padding: 0; border: 0; border-radius: var(--radius); box-shadow: 0 24px 70px rgba(11,49,87,.25); }
dialog::backdrop { background: rgba(10, 26, 43, .58); }
.dialog-content { padding: 24px; }
.dialog-content h2 { margin: 0 0 6px; color: var(--primary); }
.dialog-content > p { color: var(--text-muted); }
.dialog-scroll { max-height: calc(100vh - 190px); overflow-y: auto; padding: 2px; }

/* Shared visual refinement */
html { font-size: 16px; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
button, input, select, textarea { font-variant-numeric: tabular-nums; }
.card { box-shadow: 0 6px 22px rgba(13,59,102,.07); }
.button { min-height: var(--control-height); border-radius: var(--radius-small); box-shadow: 0 1px 1px rgba(8,39,68,.06); }
.button:active:not(:disabled) { transform: translateY(0); }
.button:disabled, input:disabled, select:disabled, textarea:disabled { opacity: .58; }
.button--ghost { box-shadow: none; }
.button--danger, .button--danger-ghost { font-weight: 800; }
.field { align-content: start; }
.field label, .field-label { letter-spacing: .01em; }
.field input, .field select, .field textarea { min-height: var(--control-height); border-color: var(--border-strong); border-radius: var(--radius-small); }
.field input[type="number"] { text-align: right; }
.form-message:empty { display: none; }
.page-header h1 { line-height: 1.12; }
.page-header p { max-width: 68ch; }
.airport-code, code, .technical-value { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-variant-numeric: tabular-nums; }
.loading-box { border: 1px solid var(--border); box-shadow: var(--shadow-elevated); }
dialog { border: 1px solid rgba(184,197,211,.8); box-shadow: var(--shadow-elevated); }
.dialog-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding-bottom: var(--space-3); border-bottom: 1px solid var(--border); }
.icon-button { transition: color var(--transition), background var(--transition), transform var(--transition); }
.icon-button:hover { background: var(--accent-soft); color: var(--primary-light); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }