@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg: #0b0e11;
    --surface: #1e2329;
    --surface2: #2b3139;
    --border: rgba(255, 255, 255, 0.08);
    --accent: #fcd535;
    --accent-active: #f0b90b;
    --on-accent: #181a20;
    --text: #ffffff;
    --text-muted: #929aa5;
    --success: #0ecb81;
    --warning: #fcd535;
    --danger: #f6465d;
    --info: #3b82f6;
    --radius: 10px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* ── Header ── */
.page-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s;
}
.btn-back:hover { color: var(--text); border-color: #444; }

.header-title { flex: 1; }
.header-title h1 { font-size: 1.1rem; font-weight: 600; }
.header-title p { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

.header-user { font-size: 0.85rem; color: var(--text-muted); }

/* ── Main container ── */
.main-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* ── Card ── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Form ── */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

.form-group input {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s;
    width: 100%;
}
.form-group input:focus { outline: none; border-color: var(--accent); }
.form-group input::placeholder { color: var(--text-muted); }

.form-actions { margin-top: 6px; display: flex; gap: 10px; align-items: center; }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: opacity 0.2s, transform 0.1s;
}
.btn:hover { opacity: 0.85; }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-icon { padding: 5px 10px; }

/* ── Message ── */
.message {
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-top: 12px;
}
.message.success { background: rgba(74,222,128,0.12); border: 1px solid rgba(74,222,128,0.3); color: var(--success); }
.message.error   { background: rgba(248,113,113,0.12); border: 1px solid rgba(248,113,113,0.3); color: var(--danger); }
.message.info    { background: rgba(96,165,250,0.12); border: 1px solid rgba(96,165,250,0.3); color: var(--info); }
.hidden { display: none !important; }

/* ── Table ── */
.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

#deviceContainer {
    overflow-x: auto;
}

.device-table { width: 100%; min-width: 720px; border-collapse: collapse; font-size: 0.875rem; }
.device-table th {
    text-align: left;
    padding: 8px 12px;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border);
}
.device-table td {
    padding: 12px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.device-table tr:last-child td { border-bottom: none; }
.device-table tbody tr:hover td { background: rgba(255,255,255,0.02); }

.device-name { font-weight: 500; }
.device-ip   { font-family: monospace; color: var(--info); font-size: 0.85rem; }
.device-loc  { color: var(--text-muted); font-size: 0.82rem; }

/* ── Status badge ── */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}
.badge-active   { background: rgba(74,222,128,0.15); color: var(--success); }
.badge-inactive { background: rgba(248,113,113,0.15); color: var(--danger); }

/* ── Action buttons in table ── */
.action-group { display: flex; flex-wrap: wrap; gap: 6px; }

@media (max-width: 420px) {
    .table-header { align-items: flex-start; gap: 10px; }
    .table-header .card-title { margin-bottom: 0; }
    #deviceContainer { overflow: visible; }
    .device-table { min-width: unset; width: 100%; }
    .device-table thead { display: none; }
    .device-table, .device-table tbody, .device-table tr, .device-table td { display: block; width: 100%; }
    .device-table tr {
        background: var(--surface2);
        border: 1px solid var(--border);
        border-radius: 16px;
        margin-bottom: 16px;
        padding: 14px 16px;
    }
    .device-table td {
        padding: 10px 0;
        border: 0;
    }
    .device-table td:not(:last-child) { border-bottom: 1px solid rgba(255,255,255,0.08); }
    .device-table td::before {
        content: attr(data-label);
        display: block;
        font-size: 0.72rem;
        color: var(--text-muted);
        margin-bottom: 6px;
        text-transform: uppercase;
        letter-spacing: 0.04em;
    }
    .device-table td:last-child::before { display: none; }
    .device-table td .action-group { justify-content: flex-start; }
    .device-table td .device-name { display: block; margin-bottom: 4px; font-size: 0.95rem; }
    .device-table td .device-ip { display: block; margin-top: 4px; }
    .device-table td .device-loc { margin-top: 4px; color: var(--text-muted); font-size: 0.82rem; }
    .action-group { gap: 10px; flex-wrap: wrap; }
    .action-group .btn { flex: 1 1 100%; }
    .btn-sm { padding: 10px 12px; }
    .device-table tr { box-shadow: 0 0 0 1px rgba(255,255,255,0.03), 0 12px 30px rgba(0,0,0,0.16); }
}

/* ── Inline result panel (test connection) ── */
.inline-panel {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 14px;
    margin-top: 8px;
    font-size: 0.82rem;
}
.inline-panel.success-panel { border-color: rgba(74,222,128,0.3); }
.inline-panel.error-panel   { border-color: rgba(248,113,113,0.3); color: var(--danger); }

.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 16px; margin-top: 6px; }
.info-row { display: flex; flex-direction: column; }
.info-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; }
.info-value { font-weight: 500; margin-top: 2px; }

/* ── Datetime panel ── */
.settime-panel {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    flex-wrap: wrap;
}
.settime-panel input[type="datetime-local"] {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    color: var(--text);
    font-size: 0.85rem;
    font-family: inherit;
}
.settime-panel input[type="datetime-local"]:focus { outline: none; border-color: var(--accent); }

/* ── Empty state ── */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}
.empty-state p { margin-top: 8px; font-size: 0.85rem; }

@media (max-width: 900px) {
    .page-header { flex-wrap: wrap; align-items: flex-start; }
    .header-title h1 { font-size: 1rem; }
    .header-title p { font-size: 0.78rem; }
    .header-user { width: 100%; margin-top: 10px; }
    .main-container { padding: 22px 18px; }
    .card { padding: 20px; }
    .table-header { flex-direction: column; align-items: stretch; gap: 12px; }
}

@media (max-width: 700px) {
    .main-container { padding: 16px 12px; }
    .form-grid { grid-template-columns: 1fr; }
    .card-title { flex-wrap: wrap; }
    .table-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .device-table { min-width: 100%; }
    .device-table th:nth-child(3),
    .device-table td:nth-child(3),
    .device-table th:nth-child(4),
    .device-table td:nth-child(4) { display: none; }
    .action-group { width: 100%; }
}