/* ============================================================
   T-Flash Server — Admin panel theme (black / red)
   Matches the T-Flash Tool desktop app identity.
   ============================================================ */

:root {
    --bg:            #0c0c0e;
    --bg-2:          #141417;
    --panel:         #17171b;
    --panel-2:       #1d1d22;
    --border:        #2a2a31;
    --border-2:      #35353d;
    --text:          #e8e8ea;
    --text-muted:    #9a9aa2;
    --text-dim:      #6c6c74;
    --red:           #e11d2a;
    --red-2:         #ff3b46;
    --red-dim:       #7d1218;
    --green:         #2ecc71;
    --amber:         #f5a623;
    --blue:          #3a9bff;
    --shadow:        0 8px 30px rgba(0,0,0,.55);
    --radius:        12px;
}

html { font-size: 14px; position: relative; min-height: 100%; }
@media (min-width: 768px) { html { font-size: 15px; } }

body {
    margin: 0 0 70px 0;
    background:
        radial-gradient(900px 500px at 100% -10%, rgba(225,29,42,.10), transparent 60%),
        radial-gradient(700px 400px at -10% 0%, rgba(225,29,42,.06), transparent 55%),
        var(--bg);
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    letter-spacing: .1px;
}

a { color: var(--red-2); text-decoration: none; }
a:hover { color: #ff6a72; }

code {
    color: #ff8a91;
    background: rgba(225,29,42,.10);
    border: 1px solid rgba(225,29,42,.20);
    padding: 1px 6px;
    border-radius: 6px;
    font-family: "Cascadia Mono", Consolas, monospace;
    font-size: .86em;
}

/* ---------- Navbar ---------- */
.navbar {
    background: rgba(18,18,21,.85) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border) !important;
    box-shadow: 0 2px 20px rgba(0,0,0,.4) !important;
    padding: .6rem 0;
}
.navbar-brand {
    font-weight: 800;
    letter-spacing: .5px;
    color: var(--text) !important;
    display: flex; align-items: center; gap: .5rem;
}
.navbar-brand::before {
    content: "";
    width: 10px; height: 22px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--red-2), var(--red-dim));
    box-shadow: 0 0 12px rgba(225,29,42,.7);
}
.navbar .nav-link {
    color: var(--text-muted) !important;
    font-weight: 600;
    padding: .4rem .9rem !important;
    border-radius: 8px;
    transition: all .15s ease;
}
.navbar .nav-link:hover { color: var(--text) !important; background: var(--panel-2); }
.navbar .nav-link.active { color: #fff !important; background: rgba(225,29,42,.18); }
.navbar-text { color: var(--text-muted) !important; font-weight: 600; }
.navbar-toggler { border-color: var(--border); }

/* ---------- Cards / panels ---------- */
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: var(--text);
}
.card-title, .card h4, .card h5 { color: var(--text); }
.shadow-sm { box-shadow: var(--shadow) !important; }

/* ---------- Headings ---------- */
h1,h2,h3,h4,h5,h6 { color: var(--text); font-weight: 700; }
h3 { position: relative; padding-left: 14px; }
h3::before {
    content:""; position:absolute; left:0; top:.1em; bottom:.1em;
    width:5px; border-radius:3px;
    background: linear-gradient(180deg, var(--red-2), var(--red-dim));
}

/* ---------- Tables ---------- */
.table {
    color: var(--text);
    border-color: var(--border);
    background: var(--panel);
    border-radius: var(--radius);
    overflow: hidden;
    border-collapse: separate;
    border-spacing: 0;
}
.table thead th {
    background: var(--bg-2);
    color: var(--text-dim);
    text-transform: uppercase;
    font-size: .72rem;
    letter-spacing: .8px;
    font-weight: 700;
    border-bottom: 1px solid var(--border) !important;
    padding: .7rem .75rem;
}
.table tbody td {
    border-top: 1px solid var(--border);
    border-color: var(--border);
    padding: .6rem .75rem;
    vertical-align: middle;
}
.table-hover tbody tr:hover td { background: var(--panel-2); color: var(--text); }
.table-hover tbody tr:hover td code { color: #ff8a91; }
.table-hover tbody tr.text-danger:hover td { color: var(--red-2); }
.table > :not(caption) > * > * { --bs-table-hover-color: var(--text); --bs-table-color-state: var(--text); }
.table > :not(caption) > * > * { background-color: transparent; }
.text-muted { color: var(--text-muted) !important; }
.text-danger { color: var(--red-2) !important; }

/* ---------- Badges ---------- */
.badge {
    font-weight: 700;
    letter-spacing: .4px;
    padding: .38em .65em;
    border-radius: 20px;
}
.badge.bg-success { background: rgba(46,204,113,.15) !important; color: #4ade80 !important; border:1px solid rgba(46,204,113,.35); }
.badge.bg-warning { background: rgba(245,166,35,.15) !important; color: #fbbf24 !important; border:1px solid rgba(245,166,35,.35); }
.badge.bg-danger  { background: rgba(225,29,42,.15) !important;  color: #ff5c66 !important; border:1px solid rgba(225,29,42,.4); }
.badge.bg-dark    { background: #000 !important; color: #ff5c66 !important; border:1px solid var(--red-dim); }

/* ---------- Buttons ---------- */
.btn { font-weight: 650; border-radius: 8px; transition: all .15s ease; }
.btn:focus, .btn:active:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 .18rem rgba(225,29,42,.35) !important;
}
.btn-primary, .btn-success {
    background: linear-gradient(180deg, var(--red), var(--red-dim));
    border: 1px solid var(--red);
    color: #fff;
}
.btn-primary:hover, .btn-success:hover {
    background: linear-gradient(180deg, var(--red-2), var(--red));
    border-color: var(--red-2);
    color:#fff;
    box-shadow: 0 4px 18px rgba(225,29,42,.4);
}
.btn-secondary {
    background: var(--panel-2); border: 1px solid var(--border-2); color: var(--text);
}
.btn-secondary:hover { background: var(--border); color:#fff; }
.btn-warning { background: rgba(245,166,35,.15); border:1px solid rgba(245,166,35,.5); color:#fbbf24; }
.btn-warning:hover { background: rgba(245,166,35,.28); color:#fff; }
.btn-danger { background: rgba(225,29,42,.14); border:1px solid rgba(225,29,42,.5); color:#ff5c66; }
.btn-danger:hover { background: var(--red); color:#fff; }
.btn-outline-primary { color: var(--red-2); border-color: var(--red-dim); }
.btn-outline-primary:hover { background: var(--red); border-color: var(--red); color:#fff; }
.btn-outline-secondary { color: var(--text-muted); border-color: var(--border-2); }
.btn-outline-secondary:hover { background: var(--panel-2); border-color: var(--border-2); color:#fff; }
.btn-outline-danger { color:#ff5c66; border-color: var(--red-dim); }
.btn-outline-danger:hover { background: var(--red); border-color: var(--red); color:#fff; }
.btn-outline-light { color: var(--text); border-color: var(--border-2); }
.btn-outline-light:hover { background: var(--panel-2); color:#fff; }
.btn-link, .btn-link.nav-link { color: var(--red-2); }

/* ---------- Forms ---------- */
.form-control, .form-select {
    background: var(--bg-2);
    border: 1px solid var(--border-2);
    color: var(--text);
    border-radius: 8px;
}
.form-control:focus, .form-select:focus {
    background: var(--bg-2);
    border-color: var(--red);
    color: var(--text);
}
.form-control::placeholder { color: var(--text-dim); }
.form-label { color: var(--text-muted); font-weight: 600; font-size: .85rem; }
.form-text { color: var(--text-dim); }
.form-check-input { background-color: var(--bg-2); border-color: var(--border-2); }
.form-check-input:checked { background-color: var(--red); border-color: var(--red); }
.form-check-label { color: var(--text); }
.input-group-text { background: var(--panel-2); border-color: var(--border-2); color: var(--text-muted); }

/* ---------- Alerts ---------- */
.alert-danger { background: rgba(225,29,42,.12); border:1px solid rgba(225,29,42,.4); color:#ff9096; border-radius: var(--radius); }
.alert-dark   { background: #000; border:1px solid var(--red-dim); color:#ff9096; border-radius: var(--radius); }

/* ---------- Footer ---------- */
.footer {
    position: absolute; bottom: 0; width: 100%; height: 60px; line-height: 60px;
    background: var(--bg-2);
    border-top: 1px solid var(--border) !important;
    color: var(--text-dim) !important;
    font-size: .85rem;
}
.footer a { color: var(--text-muted); }

/* ---------- Stat cards (dashboard) ---------- */
.stat-grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(190px,1fr)); gap:1rem; margin-bottom:1.5rem; }
.stat {
    background: var(--panel);
    border:1px solid var(--border);
    border-radius: var(--radius);
    padding:1.1rem 1.25rem;
    box-shadow: var(--shadow);
    position:relative; overflow:hidden;
}
.stat::after {
    content:""; position:absolute; right:-30px; top:-30px; width:90px; height:90px;
    background: radial-gradient(circle, rgba(225,29,42,.18), transparent 70%);
}
.stat .label { color: var(--text-dim); font-size:.72rem; text-transform:uppercase; letter-spacing:.9px; font-weight:700; }
.stat .value { font-size:2rem; font-weight:800; color:var(--text); line-height:1.1; margin-top:.35rem; }
.stat .value.red { color: var(--red-2); }