@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #0f111a;
    --card-bg: rgba(26, 29, 44, 0.65);
    --card-border: rgba(255, 255, 255, 0.08);
    --primary-color: #4f46e5;
    --primary-hover: #6366f1;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --input-bg: rgba(15, 17, 26, 0.5);
    
    --glass-blur: 16px;
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(79, 70, 229, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.1), transparent 25%);
    background-attachment: fixed;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover);
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 40px;
    width: 100%;
    max-width: 480px;
    position: relative;
    overflow: hidden;
    animation: slideUp 0.5s ease-out forwards;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
}

.auth-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    transition: all 0.3s ease;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary-color), #3b35a3);
    color: white;
    border: none;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

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

/* Dashboard UI */
.navbar {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--card-border);
    padding: 16px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.dashboard-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.device-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 24px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.device-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--card-border);
}

.device-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.device-key {
    font-size: 12px;
    color: var(--text-secondary);
    font-family: monospace;
    background: var(--input-bg);
    padding: 4px 8px;
    border-radius: 4px;
    margin-top: 8px;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
}

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

.variable-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.02);
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
}

.variable-item:hover {
    background: rgba(255,255,255,0.05);
    border-color: var(--card-border);
}

.var-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.var-icon {
    width: 36px;
    height: 36px;
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary-color);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
}

.var-details h4 {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 2px;
}

.var-details span {
    font-size: 12px;
    color: var(--text-secondary);
}

.var-value {
    font-weight: 600;
    font-family: monospace;
    font-size: 16px;
}

/* Switches and UI Controls */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--input-bg);
    transition: .4s;
    border: 1px solid var(--card-border);
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(20px);
    background-color: #fff;
}