/* adsb-alerts — minimal vanilla CSS; no CDN assets (Gasda standards) */

:root {
    --bg: #f8f9fa;
    --surface: #fff;
    --border: #dee2e6;
    --primary: #0d6efd;
    --primary-dark: #0a58ca;
    --danger: #dc3545;
    --success: #198754;
    --warning: #ffc107;
    --text: #212529;
    --text-muted: #6c757d;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,.1);
    --nav-h: 56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

/* ---- NAV ---- */
nav.topnav {
    background: #1a1d21;
    color: #cfd3da;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    gap: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}
nav.topnav .brand {
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: .4rem;
}
nav.topnav .brand::before { content: "✈"; font-size: 1.2rem; }
nav.topnav a {
    color: #cfd3da;
    text-decoration: none;
    font-size: .9rem;
    padding: .25rem .5rem;
    border-radius: var(--radius);
    transition: background .15s;
}
nav.topnav a:hover { background: rgba(255,255,255,.1); color: #fff; }
nav.topnav .nav-right { margin-left: auto; display: flex; align-items: center; gap: .75rem; }
nav.topnav .nav-user { font-size: .85rem; color: #adb5bd; }

/* ---- LAYOUT ---- */
main { max-width: 960px; margin: 2rem auto; padding: 0 1rem; }
.page-title { font-size: 1.5rem; font-weight: 600; margin-bottom: 1.25rem; }

/* ---- CARDS ---- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}
.card-header {
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: .75rem;
    padding-bottom: .6rem;
    border-bottom: 1px solid var(--border);
}

/* ---- TABLES ---- */
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: .55rem .75rem; border-bottom: 1px solid var(--border); }
th { font-weight: 600; background: #f1f3f5; color: var(--text-muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f8f9ff; }

/* ---- FORMS ---- */
.form-group { margin-bottom: 1rem; }
label { display: block; font-size: .875rem; font-weight: 500; margin-bottom: .3rem; }
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: .45rem .7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .95rem;
    line-height: 1.5;
    transition: border-color .15s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13,110,253,.15);
}
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: .25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .42rem .9rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: .9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, border-color .15s;
    white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b02a37; border-color: #b02a37; }
.btn-outline { background: #fff; color: var(--text); border-color: var(--border); }
.btn-outline:hover { background: var(--bg); }
.btn-sm { padding: .25rem .6rem; font-size: .8rem; }
.btn-link { background: none; border: none; color: var(--primary); padding: 0; text-decoration: underline; cursor: pointer; font-size: inherit; }

/* ---- ALERTS / FLASH ---- */
.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: .9rem;
    border: 1px solid transparent;
}
.alert-success { background: #d1e7dd; color: #0f5132; border-color: #badbcc; }
.alert-danger  { background: #f8d7da; color: #842029; border-color: #f5c2c7; }
.alert-warning { background: #fff3cd; color: #664d03; border-color: #ffecb5; }
.alert-info    { background: #cff4fc; color: #055160; border-color: #b6effb; }

/* ---- BADGES ---- */
.badge {
    display: inline-block;
    padding: .2em .55em;
    font-size: .75rem;
    font-weight: 600;
    border-radius: 1em;
    white-space: nowrap;
}
.badge-success { background: #d1e7dd; color: #0f5132; }
.badge-danger  { background: #f8d7da; color: #842029; }
.badge-warning { background: #fff3cd; color: #664d03; }
.badge-secondary { background: #e2e3e5; color: #41464b; }
.badge-primary { background: #cfe2ff; color: #084298; }

/* ---- LOGIN PAGE ---- */
.login-wrap {
    max-width: 380px;
    margin: 6rem auto 0;
    padding: 0 1rem;
}
.login-wrap .card { padding: 2rem; }
.login-title {
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text);
}
.login-title span { display: block; font-size: .9rem; font-weight: 400; color: var(--text-muted); margin-top: .25rem; }

/* ---- DASHBOARD ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
}
.stat-value { font-size: 2rem; font-weight: 700; line-height: 1; color: var(--primary); }
.stat-label { font-size: .8rem; color: var(--text-muted); margin-top: .25rem; }

/* ---- QR CODE ---- */
.qr-wrap { text-align: center; margin: 1rem 0; }
.qr-wrap svg { max-width: 200px; height: auto; }

/* ---- NTFY topic display ---- */
.topic-display {
    font-family: monospace;
    font-size: .9rem;
    background: #f1f3f5;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: .4rem .75rem;
    display: inline-block;
    word-break: break-all;
}

/* ---- TOGGLE SWITCH ---- */
.toggle-wrap { display: flex; align-items: center; gap: .5rem; }
.toggle-wrap input[type="checkbox"] { width: 1.1rem; height: 1.1rem; accent-color: var(--primary); cursor: pointer; }

/* ---- EMPTY STATE ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}
.empty-state p { margin-top: .5rem; font-size: .9rem; }

/* ---- FOOTER ---- */
footer {
    text-align: center;
    color: var(--text-muted);
    font-size: .78rem;
    padding: 2rem 1rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
}
footer a { color: var(--text-muted); }

/* ---- HEX STATUS ---- */
.hex-pending  { color: var(--text-muted); font-style: italic; }
.hex-resolved { color: var(--success); }
.hex-failed   { color: var(--danger); }

/* ---- MISC UTILITIES ---- */
.mt-1 { margin-top: .25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: 1rem; }
.mb-2 { margin-bottom: .5rem; }
.mb-3 { margin-bottom: 1rem; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-2 { gap: .5rem; }
.gap-3 { gap: 1rem; }
.justify-between { justify-content: space-between; }
.fw-bold { font-weight: 600; }
.small { font-size: .85rem; }
.mono { font-family: monospace; }