:root {
--bg: #070707; --bg-2: #0b0b0b; --panel: rgba(255,255,255,0.04);
--muted: rgba(255,255,255,0.65); --muted-2: rgba(255,255,255,0.45);
--text: #fff; --glass: rgba(255,255,255,0.06);
--radius: 16px; --accent: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
--accent-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
--success: #10b981; --warning: #f59e0b; --error: #ef4444;
font-synthesis: none;
}

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

body {
margin: 0;
min-height: 100vh;
background: linear-gradient(180deg, var(--bg), var(--bg-2));
color: var(--text);
font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
line-height: 1.6;
}

.container {
max-width: 1800px;
margin: 5px auto;
padding: 24px;
}

.dashboard {
display: grid;
grid-template-columns: 280px 1fr;
gap: 24px;
align-items: start;
}

.sidebar {
background: var(--panel);
border: 1px solid var(--glass);
padding: 24px;
border-radius: var(--radius);
backdrop-filter: blur(12px);
position: sticky;
top: 24px;
transition: all 0.3s ease;
}

.profile-mini {
display: flex;
gap: 16px;
align-items: center;
margin-bottom: 24px;
padding-bottom: 20px;
border-bottom: 1px solid var(--glass);
}

.avatar {
width: 64px;
height: 64px;
border-radius: 16px;
background: var(--accent);
display: flex;
align-items: center;
justify-content: center;
font-weight: 700;
font-size: 1.25rem;
box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.profile-mini .meta {
font-size: 14px;
flex: 1;
}

.profile-mini .name {
font-weight: 700;
font-size: 1.1rem;
margin-bottom: 4px;
}

.nav {
display: flex;
flex-direction: column;
gap: 8px;
}

.nav button {
background: transparent;
border: 1px solid transparent;
color: var(--muted);
text-align: left;
padding: 14px 16px;
border-radius: 12px;
cursor: pointer;
font-weight: 600;
transition: all 0.2s ease;
display: flex;
align-items: center;
gap: 12px;
}

.nav button:hover {
background: rgba(255,255,255,0.03);
color: var(--text);
transform: translateX(4px);
}

.nav button.active {
color: var(--text);
background: rgba(102, 126, 234, 0.1);
border-color: rgba(102, 126, 234, 0.2);
}

.nav-icon {
width: 20px;
height: 20px;
opacity: 0.7;
}

.logout {
margin-top: 20px;
padding: 12px 16px;
border-radius: 12px;
border: 1px solid rgba(255,255,255,0.08);
background: transparent;
color: var(--muted);
cursor: pointer;
font-weight: 600;
width: 100%;
transition: all 0.2s ease;
display: flex;
align-items: center;
gap: 12px;
justify-content: center;
}

.logout:hover {
background: rgba(239, 68, 68, 0.1);
color: var(--error);
border-color: rgba(239, 68, 68, 0.2);
}

.panel {
background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
border: 1px solid var(--glass);
padding: 28px;
border-radius: var(--radius);
overflow: hidden;
min-height: 600px;
}

.panel h2 {
margin: 0 0 8px;
font-size: 1.75rem;
font-weight: 800;
background: linear-gradient(135deg, #fff, #a5b4fc);
background-clip: text;
-webkit-text-fill-color: transparent;
}

.grid-3 {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 18px;
margin-bottom: 28px;
}

.stat {
padding: 20px;
border-radius: var(--radius);
background: rgba(255,255,255,0.02);
border: 1px solid rgba(255,255,255,0.03);
text-align: center;
transition: all 0.3s ease;
position: relative;
overflow: hidden;
}

.stat::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
height: 3px;
background: var(--accent);
}

.stat:hover {
transform: translateY(-4px);
box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}

.stat .val {
font-size: 2.2rem;
font-weight: 800;
margin: 8px 0;
background: linear-gradient(135deg, #fff, #a5b4fc);
background-clip: text;
-webkit-text-fill-color: transparent;
}

.card {
padding: 24px;
border-radius: var(--radius);
background: rgba(255,255,255,0.02);
border: 1px solid rgba(255,255,255,0.03);
margin-bottom: 24px;
transition: all 0.3s ease;
}

.card:hover {
transform: translateY(-2px);
box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

label {
display: block;
font-size: 14px;
color: var(--muted);
margin-bottom: 8px;
font-weight: 500;
}

input[type=text], input[type=email], input[type=tel], select, textarea {
width: 100%;
padding: 14px 16px;
border-radius: 12px;
border: 1px solid var(--glass);
background: rgba(255,255,255,0.03);
color: var(--text);
font-size: 15px;
transition: all 0.2s ease;
}

input:focus, select:focus, textarea:focus {
outline: none;
border-color: rgba(102, 126, 234, 0.5);
box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-row {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 16px;
margin-bottom: 20px;
}

.actions {
display: flex;
gap: 12px;
margin-top: 24px;
}

.btn {
padding: 12px 24px;
border-radius: 12px;
border: 1px solid var(--glass);
background: transparent;
color: var(--text);
cursor: pointer;
font-weight: 600;
font-size: 14px;
transition: all 0.2s ease;
display: inline-flex;
align-items: center;
gap: 8px;
}

.btn:hover {
transform: translateY(-2px);
box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.btn.primary {
background: var(--accent);
color: #fff;
border: none;
box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
}

.btn.primary:hover {
background: var(--accent-hover);
box-shadow: 0 12px 40px rgba(102, 126, 234, 0.5);
}

.btn.small {
padding: 8px 16px;
font-size: 13px;
}

.list {
display: flex;
flex-direction: column;
gap: 12px;
}

.list-item {
display: flex;
justify-content: space-between;
gap: 16px;
align-items: center;
padding: 18px 20px;
border-radius: 12px;
background: rgba(255,255,255,0.02);
border: 1px solid rgba(255,255,255,0.03);
transition: all 0.2s ease;
}

.list-item:hover {
transform: translateY(-2px);
box-shadow: 0 6px 20px rgba(0,0,0,0.15);
border-color: rgba(255,255,255,0.08);
}

.status {
padding: 4px 12px;
border-radius: 20px;
font-size: 12px;
font-weight: 600;
}

.status.online { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.status.offline { background: rgba(239, 68, 68, 0.15); color: var(--error); }
.status.pending { background: rgba(245, 158, 11, 0.15); color: var(--warning); }

.muted { color: var(--muted); font-size: 14px; }

.header-actions {
display: flex;
gap: 12px;
align-items: center;
}

.search-box {
position: relative;
margin-bottom: 24px;
}

.search-box input {
padding-left: 44px;
}

.search-icon {
position: absolute;
left: 16px;
top: 50%;
transform: translateY(-50%);
width: 18px;
height: 18px;
opacity: 0.6;
}

.modal {
display: none;
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(7, 7, 7, 0.8);
backdrop-filter: blur(8px);
z-index: 1000;
align-items: center;
justify-content: center;
}

.modal-content {
background: var(--panel);
border: 1px solid var(--glass);
border-radius: var(--radius);
padding: 32px;
width: 90%;
max-width: 500px;
max-height: 90vh;
overflow-y: auto;
}

.modal h3 {
margin-bottom: 20px;
font-size: 1.5rem;
}

.close-modal {
position: absolute;
top: 20px;
right: 20px;
background: none;
border: none;
color: var(--muted);
font-size: 24px;
cursor: pointer;
width: 32px;
height: 32px;
display: flex;
align-items: center;
justify-content: center;
border-radius: 8px;
}

.close-modal:hover {
background: rgba(255,255,255,0.05);
color: var(--text);
}

.device-form .form-group {
margin-bottom: 20px;
}

@media (max-width: 900px) {
.dashboard { grid-template-columns: 1fr; }
.container { margin: 80px 16px 40px; padding: 16px; }
.grid-3 { grid-template-columns: repeat(2, 1fr); }
.sidebar { position: static; }
.form-row { grid-template-columns: 1fr; }
.header-actions { flex-direction: column; align-items: stretch; }
}

@media (max-width: 600px) {
.grid-3 { grid-template-columns: 1fr; }
.list-item { flex-direction: column; align-items: flex-start; }
.list-item-actions { align-self: flex-end; }
}

.fade-in {
animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
from { opacity: 0; transform: translateY(10px); }
to { opacity: 1; transform: translateY(0); }
}

.empty-state {
text-align: center;
padding: 60px 20px;
color: var(--muted-2);
}

.empty-state svg {
width: 80px;
height: 80px;
margin-bottom: 20px;
opacity: 0.5;
}