:root {
    --bg:        #0d1117;
    --sidebar:   #161b27;
    --card:      #1e2435;
    --card2:     #252d3d;
    --accent:    #e63946;
    --accent-h:  #c1121f;
    --text:      #cdd5e0;
    --muted:     #7a8599;
    --border:    #2a3347;
    --success:   #3fb950;
    --warning:   #d29922;
    --info:      #388bfd;
    --danger:    #e63946;
    --radius:    8px;
    --sidebar-w: 220px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }

body {
    display: flex;
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-w);
    min-height: 100vh;
    background: var(--sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
}
.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 16px;
    border-bottom: 1px solid var(--border);
}
.logo-icon { color: var(--accent); font-size: 22px; }
.logo-text  { font-size: 18px; font-weight: 700; letter-spacing: .5px; }

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--muted);
    text-decoration: none;
    border-radius: var(--radius);
    margin: 0 8px;
    transition: background .15s, color .15s;
    font-size: 13.5px;
}
.nav-item:hover  { background: var(--card); color: var(--text); }
.nav-item.active { background: var(--accent); color: #fff; }
.nav-icon { font-size: 14px; width: 18px; text-align: center; }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.user-name  { font-size: 12px; color: var(--muted); }
.btn-logout {
    font-size: 12px;
    color: var(--muted);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--card);
    text-align: center;
    transition: background .15s;
}
.btn-logout:hover { background: var(--danger); color: #fff; }

/* Main */
.main { margin-left: var(--sidebar-w); flex: 1; min-height: 100vh; overflow-y: auto; }
.main-inner { padding: 28px; max-width: 1200px; }
.page-title { font-size: 20px; font-weight: 600; margin-bottom: 24px; }

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

/* Stats */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}
.stat-value { font-size: 32px; font-weight: 700; margin-bottom: 4px; }
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.stat-card.accent { border-color: var(--accent); }
.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.green  .stat-value { color: var(--success); }
.stat-card.blue   .stat-value { color: var(--info); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .5px; background: var(--card2); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--card2); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.badge-on   { background: rgba(63,185,80,.15);  color: var(--success); }
.badge-off  { background: rgba(122,133,153,.15); color: var(--muted); }
.badge-rec  { background: rgba(230,57,70,.15);  color: var(--danger); animation: blink 1s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.4} }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: background .15s, transform .1s;
    white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary   { background: var(--accent);  color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-secondary { background: var(--card2);   color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-success   { background: var(--success); color: #111; }
.btn-success:hover { filter: brightness(1.1); }
.btn-danger    { background: var(--danger);  color: #fff; }
.btn-danger:hover  { background: var(--accent-h); }
.btn-info      { background: var(--info);    color: #fff; }
.btn-info:hover { filter: brightness(1.1); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Forms */
.form-group { margin-bottom: 16px; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 600; text-transform: uppercase; letter-spacing: .3px; }
input[type=text], input[type=password], input[type=number], select, textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 9px 12px;
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color .15s;
    outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
.form-hint { font-size: 11px; color: var(--muted); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; gap: 8px; margin-top: 20px; }

/* Alerts */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 13px; }
.alert-success { background: rgba(63,185,80,.1);  border: 1px solid rgba(63,185,80,.3);  color: var(--success); }
.alert-error   { background: rgba(230,57,70,.1);  border: 1px solid rgba(230,57,70,.3);  color: var(--danger); }
.alert-info    { background: rgba(56,139,253,.1); border: 1px solid rgba(56,139,253,.3); color: var(--info); }
.alert-warning { background: rgba(210,153,34,.1); border: 1px solid rgba(210,153,34,.3); color: var(--warning); }

/* Login */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { width: 360px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; }
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .icon { font-size: 40px; color: var(--accent); display: block; }
.login-logo h1 { font-size: 22px; margin-top: 8px; }
.login-logo p { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* Video */
.video-cell { background: #000; border-radius: var(--radius); overflow: hidden; position: relative; aspect-ratio: 16/9; }
.video-cell video { width: 100%; height: 100%; object-fit: contain; background: #000; display: block; }
.video-loading { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.7); font-size: 13px; color: var(--muted); }

/* Spinner */
.spinner { width: 24px; height: 24px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Grille 2 colonnes (settings) */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; max-width: 960px; }
@media (max-width: 860px) {
    .settings-grid { grid-template-columns: 1fr; }
}

/* Mobile nav toggle (caché sur desktop) */
.mobile-topbar { display: none; }
.sidebar-backdrop { display: none; }

/* Responsive */
@media (max-width: 860px) {
    .mobile-topbar {
        display: flex;
        align-items: center;
        gap: 12px;
        position: sticky;
        top: 0;
        z-index: 90;
        background: var(--sidebar);
        border-bottom: 1px solid var(--border);
        padding: 12px 16px;
    }
    .mobile-topbar .logo-icon { color: var(--accent); font-size: 18px; }
    .mobile-topbar .logo-text { font-size: 15px; font-weight: 700; }
    .menu-toggle {
        background: var(--card2);
        border: 1px solid var(--border);
        color: var(--text);
        width: 34px; height: 34px;
        border-radius: var(--radius);
        font-size: 16px;
        cursor: pointer;
        flex-shrink: 0;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform .2s ease;
        width: 240px;
        z-index: 200;
    }
    .sidebar.open { transform: translateX(0); }

    .sidebar-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,.5);
        z-index: 150;
        opacity: 0;
        pointer-events: none;
        transition: opacity .2s ease;
    }
    .sidebar-backdrop.open { opacity: 1; pointer-events: auto; }

    .main { margin-left: 0; }
    .main-inner { padding: 16px; max-width: 100%; }
    .page-title { display: none; } /* dupliqué dans la topbar mobile */

    .stat-grid { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; }
    .stat-value { font-size: 24px; }
    .card { padding: 14px; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .login-box { width: 100%; max-width: 360px; padding: 28px 22px; }
}

@media (max-width: 480px) {
    .btn { padding: 6px 10px; font-size: 12px; }
    th, td { padding: 8px 10px; font-size: 12.5px; }
}

/* Utilities */
.text-muted   { color: var(--muted); }
.text-danger  { color: var(--danger); }
.text-success { color: var(--success); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-2 { margin-bottom: 16px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap    { display: flex; flex-wrap: wrap; gap: 8px; }
.actions { display: flex; gap: 6px; }
.no-data { text-align: center; padding: 40px; color: var(--muted); }