:root {
    --bg: #0b0f1a;
    --card: rgba(23, 28, 41, 0.8);
    --text: #f8fafc;
    --accent: #38bdf8;
    --temp: #fb7185;
    --hum: #60a5fa;
    --lm: #34d399;
    --glass: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; }

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: radial-gradient(circle at 0% 0%, #1e293b 0%, #0b0f1a 100%);
    color: var(--text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Navigation */
nav {
    background: rgba(11, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    padding: 1.2rem 3rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-links { display: flex; gap: 30px; align-items: center; }

nav a {
    color: var(--text) !important;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0.6;
    transition: 0.4s;
    padding: 8px 0;
    position: relative;
}

nav a:visited { color: var(--text) !important; }

nav a.active { opacity: 1; color: var(--accent) !important; }
nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 100%; height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

nav a:hover { opacity: 1; color: var(--accent) !important; }

.logout-btn {
    background: rgba(251, 113, 133, 0.1) !important;
    color: #fb7185 !important;
    padding: 8px 16px !important;
    border-radius: 10px;
    border: 1px solid rgba(251, 113, 133, 0.2);
    font-size: 0.85rem;
    font-weight: 700;
}

.logout-btn:hover { background: #fb7185 !important; color: #000 !important; }

/* Layout Containers */
.container {
    max-width: 1300px;
    margin: 50px auto;
    padding: 0 30px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cards & Sections */
.card, .node-card, .generator-box, .config-card, .table-section {
    background: var(--card);
    backdrop-filter: blur(20px);
    padding: 35px;
    border-radius: 32px;
    border: 1px solid var(--border);
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.card:hover, .node-card:hover, .generator-box:hover, .config-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    background: rgba(30, 41, 59, 0.9);
}

.config-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    gap: 40px;
}

.config-info {
    flex: 1;
}

.config-info h2 {
    margin: 0 0 10px 0;
    font-size: 1.5rem;
    color: #fff;
    text-transform: none;
    letter-spacing: -0.5px;
}

.config-info p {
    margin: 0;
    color: #94a3b8;
    font-size: 1rem;
    line-height: 1.6;
    max-width: 600px;
}


/* Forms & Inputs */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; margin-bottom: 30px; }
.input-group { display: flex; flex-direction: column; gap: 10px; }

label {
    font-size: 0.8rem;
    font-weight: 700;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 1px;
}

select, input[type="text"], input[type="number"], input[type="password"] {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    padding: 15px;
    border-radius: 16px;
    color: #fff;
    font-size: 1rem;
    outline: none;
    transition: 0.3s;
}

select:focus, input:focus { border-color: var(--accent); background: rgba(255, 255, 255, 0.08); }
select option { background: #0b0f1a; color: #fff; }

/* Buttons */
.btn-accent, .btn-generate, .sync-btn {
    background: var(--accent);
    color: #000;
    border: none;
    padding: 16px 32px;
    border-radius: 16px;
    font-weight: 800;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-accent:hover, .btn-generate:hover, .sync-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(56, 189, 248, 0.3);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th {
    text-align: left;
    color: #64748b;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 20px;
    font-weight: 500;
    border-bottom: 1px solid var(--glass);
}

tr:hover td { background: rgba(255,255,255,0.02); }

/* Typography */
h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 40px; letter-spacing: -1.5px; }
h2 { margin: 0 0 25px 0; font-size: 1.2rem; color: #94a3b8; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }