/* ===== Sensor Relay Dashboard v0.7 ===== */

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

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d29;
    --bg-card: #21253a;
    --bg-card-hover: #282d45;
    --border: #2d3250;
    --text-primary: #e8eaf0;
    --text-secondary: #8b8fa3;
    --accent: #6c8aff;
    --accent-glow: rgba(108, 138, 255, 0.3);
    --success: #3ddc84;
    --error: #f44336;
    --warning: #ffab40;
    --info: #29b6f6;
}

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

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

/* ===== Header ===== */
header {
    background: linear-gradient(135deg, #1a1d29 0%, #21253a 100%);
    border-bottom: 1px solid var(--border);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
}

.header-left { display: flex; align-items: center; gap: 10px; }

.logo {
    width: 34px; height: 34px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 17px;
}

h1 { font-size: 17px; font-weight: 600; letter-spacing: -0.02em; }
h1 span { color: var(--text-secondary); font-weight: 400; font-size: 13px; margin-left: 8px; }

.header-right { display: flex; align-items: center; gap: 10px; }

.badge {
    padding: 3px 10px; border-radius: 14px;
    font-size: 11px; font-weight: 600;
}
.badge-success { background: rgba(61,220,132,0.15); color: var(--success); border: 1px solid rgba(61,220,132,0.3); }
.badge-warning { background: rgba(255,171,64,0.15); color: var(--warning); border: 1px solid rgba(255,171,64,0.3); }
.badge-error { background: rgba(244,67,54,0.15); color: var(--error); border: 1px solid rgba(244,67,54,0.3); }
.badge-info { background: rgba(108,138,255,0.15); color: var(--accent); border: 1px solid rgba(108,138,255,0.3); }

/* ===== Tabs ===== */
.tab-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex; padding: 0 20px; gap: 2px;
}
.tab-btn {
    padding: 10px 16px; font-size: 12px; font-weight: 600;
    color: var(--text-secondary); background: none;
    border: none; cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-btn .count {
    background: rgba(244,67,54,0.2); color: var(--error);
    font-size: 10px; padding: 1px 5px; border-radius: 8px;
    margin-left: 4px;
}

/* ===== Layout ===== */
.main-layout { display: grid; grid-template-columns: 240px 1fr; height: calc(100vh - 86px); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== Sidebar ===== */
.sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    display: flex; flex-direction: column;
}
.sidebar-header {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    font-size: 12px; font-weight: 600; color: var(--text-secondary);
}
.add-btn {
    width: 26px; height: 26px; border-radius: 7px;
    border: 1px solid var(--border); background: var(--bg-card);
    color: var(--accent); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; transition: all 0.2s;
}
.add-btn:hover { background: var(--accent); color: white; }
.device-list { flex: 1; padding: 6px; }
.device-item {
    padding: 9px 10px; border-radius: 8px; cursor: pointer;
    transition: all 0.2s; margin-bottom: 3px;
    border: 1px solid transparent;
}
.device-item:hover { background: var(--bg-card); }
.device-item.active { background: var(--bg-card); border-color: var(--accent); box-shadow: 0 0 10px var(--accent-glow); }
.device-item-top { display: flex; align-items: center; justify-content: space-between; }
.device-name { font-size: 12px; font-weight: 600; display: flex; align-items: center; gap: 5px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.status-dot.on { background: var(--success); box-shadow: 0 0 6px rgba(61,220,132,0.5); }
.status-dot.off { background: var(--error); }
.device-type-tag {
    font-size: 9px; padding: 1px 5px; border-radius: 4px;
    font-weight: 600; text-transform: uppercase;
}
.tag-sensor { background: rgba(108,138,255,0.2); color: var(--accent); }
.tag-actuator { background: rgba(255,171,64,0.2); color: var(--warning); }
.tag-gps { background: rgba(41,182,246,0.2); color: var(--info); }
.tag-sim { background: rgba(139,92,246,0.2); color: #a78bfa; }
.device-meta { font-size: 10px; color: var(--text-secondary); margin-top: 3px; display: flex; gap: 6px; }

/* ===== Content ===== */
.content { overflow-y: auto; padding: 16px; }
.content-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    height: 100%; color: var(--text-secondary); font-size: 13px;
}
.content-empty .icon { font-size: 40px; margin-bottom: 10px; opacity: 0.5; }

/* ===== Data Cards ===== */
.data-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; margin-bottom: 12px; }
.data-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 14px; text-align: center;
    transition: border-color 0.3s, box-shadow 0.3s;
}
.data-card:hover { border-color: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.data-icon { font-size: 20px; margin-bottom: 3px; }
.data-label { font-size: 10px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 3px; }
.data-value { font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.data-unit { font-size: 12px; color: var(--text-secondary); font-weight: 400; }

/* ===== Chart ===== */
.chart-container {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 12px; margin-bottom: 12px;
}
.chart-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.chart-title { font-size: 12px; font-weight: 600; display: flex; align-items: center; gap: 5px; }
canvas.chart { width: 100%; height: 180px; display: block; }

/* ===== Panels ===== */
.panels-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.card-header {
    padding: 10px 14px;
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--border);
}
.card-title { font-size: 12px; font-weight: 600; display: flex; align-items: center; gap: 5px; }
.log-body {
    padding: 6px; font-family: 'JetBrains Mono', monospace;
    font-size: 10px; line-height: 1.7; height: 220px; overflow-y: auto;
}
.log-entry { padding: 1px 5px; border-radius: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.log-entry:nth-child(even) { background: rgba(255,255,255,0.02); }
.log-entry .ts { color: var(--text-secondary); }
.log-entry .data { color: var(--success); }
.log-entry .cmd { color: var(--warning); }
.log-entry .err { color: var(--error); }

/* ===== Commands ===== */
.cmd-body { padding: 12px; }
.preset-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin-bottom: 10px; }
.preset-btn {
    padding: 7px 8px; border: 1px solid var(--border); border-radius: 5px;
    background: var(--bg-secondary); color: var(--text-primary);
    font-size: 11px; cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; gap: 3px;
}
.preset-btn:hover { border-color: var(--accent); background: rgba(108,138,255,0.1); }
.input-group { display: flex; gap: 5px; margin-top: 8px; }
.input-group input {
    flex: 1; padding: 7px 10px;
    border: 1px solid var(--border); border-radius: 5px;
    background: var(--bg-secondary); color: var(--text-primary);
    font-size: 11px; font-family: 'JetBrains Mono', monospace; outline: none;
}
.input-group input:focus { border-color: var(--accent); }
.send-btn {
    padding: 7px 14px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border: none; border-radius: 5px; color: white;
    font-size: 11px; font-weight: 600; cursor: pointer;
}
.small-btn {
    padding: 3px 7px; border: 1px solid var(--border); border-radius: 3px;
    background: transparent; color: var(--text-secondary);
    font-size: 9px; cursor: pointer;
}
.small-btn:hover { border-color: var(--text-secondary); }

/* ===== Overview / System Tab ===== */
.overview-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 10px; padding: 14px;
}
.stat-label { font-size: 10px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-sub { font-size: 10px; color: var(--text-secondary); margin-top: 2px; }

/* ===== Alert List ===== */
.alert-list { padding: 8px; max-height: 400px; overflow-y: auto; }
.alert-item {
    padding: 8px 10px; border-radius: 6px; margin-bottom: 4px;
    border-left: 3px solid; font-size: 11px;
    background: var(--bg-card);
}
.alert-item.critical { border-left-color: var(--error); }
.alert-item.warning { border-left-color: var(--warning); }
.alert-item.info { border-left-color: var(--info); }
.alert-item .alert-header { display: flex; justify-content: space-between; margin-bottom: 2px; }
.alert-item .alert-title { font-weight: 600; }
.alert-item .alert-time { color: var(--text-secondary); font-size: 10px; }
.alert-item .alert-detail { color: var(--text-secondary); }

/* ===== Device Header ===== */
.device-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.device-title { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.device-actions { display: flex; gap: 6px; }
.action-btn {
    padding: 5px 12px; border-radius: 6px;
    border: 1px solid var(--border); background: transparent;
    color: var(--text-secondary); font-size: 11px;
    cursor: pointer; transition: all 0.2s;
}
.action-btn:hover { border-color: var(--accent); color: var(--accent); }
.action-btn.danger { border-color: rgba(244,67,54,0.3); color: var(--error); }
.action-btn.danger:hover { background: rgba(244,67,54,0.15); }

/* ===== Modal ===== */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    z-index: 100; align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; width: 380px; max-width: 90vw; }
.modal h2 { font-size: 15px; margin-bottom: 12px; }
.modal label { font-size: 11px; color: var(--text-secondary); display: block; margin: 8px 0 3px; }
.modal input, .modal select {
    width: 100%; padding: 7px 10px;
    border: 1px solid var(--border); border-radius: 5px;
    background: var(--bg-secondary); color: var(--text-primary);
    font-size: 12px; outline: none;
}
.modal input:focus, .modal select:focus { border-color: var(--accent); }
.modal-actions { display: flex; gap: 6px; margin-top: 14px; justify-content: flex-end; }
.modal-cancel { padding: 7px 14px; border: 1px solid var(--border); border-radius: 5px; background: transparent; color: var(--text-secondary); cursor: pointer; font-size: 12px; }
.modal-submit { padding: 7px 16px; background: var(--accent); border: none; border-radius: 5px; color: white; cursor: pointer; font-size: 12px; font-weight: 600; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .main-layout { grid-template-columns: 1fr; }
    .sidebar { display: none; }
    .panels-row { grid-template-columns: 1fr; }
    .overview-grid { grid-template-columns: 1fr 1fr; }
}