/* ==================== Global Styles ==================== */

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

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #64748b;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --color-warning: #ea580c;
    --color-bg: #f8fafc;
    --color-bg-light: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.3;
}

/* ==================== Utilities ==================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.section {
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.section h2 {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ==================== Buttons ==================== */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #475569;
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background-color: var(--color-danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background-color: #b91c1c;
}

.btn-mode {
    padding: var(--spacing-md) var(--spacing-2xl);
    margin-right: var(--spacing-md);
    background-color: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    font-size: 1rem;
    font-weight: 600;
}

.btn-mode:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-mode.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    width: 100%;
}

/* ==================== Forms ==================== */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

/* ==================== Messages ==================== */

.error-message {
    background-color: #fee2e2;
    color: #dc2626;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-danger);
}

.status-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: none;
}

.status-message.success {
    display: block;
    background-color: #dcfce7;
    color: #166534;
    border-left: 4px solid var(--color-success);
}

.status-message.error {
    display: block;
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--color-danger);
}

/* ==================== Alerts ==================== */

.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.alert-info {
    background-color: #e0f2fe;
    color: #0c4a6e;
    border-left: 4px solid #0284c7;
}

.alert-info p {
    margin-bottom: var(--spacing-sm);
}

.alert-info strong {
    font-weight: 600;
}

/* ==================== Status Display ==================== */

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.status-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.status-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.status-card h3 {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    font-variant-numeric: tabular-nums;
}

.status-values {
    font-size: 1.1rem;
    font-weight: 650;
    margin-bottom: var(--spacing-sm);
    font-variant-numeric: tabular-nums;
}

.status-label {
    font-size: 0.85rem;
    opacity: 0.8;
}

.last-update {
    font-size: 0.85rem;
    color: var(--color-text-light);
    text-align: right;
}

/* ==================== Connection Status ==================== */

.connection-status {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-border);
}

.status-indicator {
    display: inline-block;
    font-weight: 600;
    margin-left: var(--spacing-md);
}

.status-connected {
    color: var(--color-success);
}

.status-disconnected {
    color: var(--color-danger);
}

/* ==================== Setting Section ==================== */

.settings-grid {
    display: grid;
    grid-template-columns: auto auto;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.settings-card {
    background: linear-gradient(135deg, rgb(102 126 234 / 0.17) 0%, rgb(118 75 162 / 0.17) 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

/* ==================== Mode Selector ==================== */

.mode-selector {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

/* ==================== Override Form ==================== */


.override-status {
    margin-bottom: var(--spacing-lg);
}

.override-form .description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
}

/* ==================== Navbar ==================== */

.navbar {
    background: white;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-info {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ==================== Login Page ==================== */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: var(--spacing-lg);
}

.login-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.login-card h1 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.75rem;
    text-align: center;
}

.login-card .subtitle {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.login-form {
    margin-bottom: var(--spacing-xl);
}

.login-form .form-group {
    margin-bottom: var(--spacing-lg);
}

.login-info {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    border-left: 4px solid var(--color-warning);
}

.login-info p {
    margin-bottom: var(--spacing-sm);
}

.login-info code {
    background-color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Courier New', monospace;
}

/* ==================== Responsive ==================== */

@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .navbar-menu {
        width: 100%;
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .status-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .mode-selector {
        flex-direction: column;
    }

    .btn-mode {
        width: 100%;
    }

    .container {
        padding: var(--spacing-md);
    }

    .section {
        padding: var(--spacing-md);
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f172a;
        --color-bg-light: #1e293b;
        --color-border: #334155;
        --color-text: #f1f5f9;
        --color-text-light: #cbd5e1;
    }

    .navbar {
        background: #1e293b;
    }

    .status-card {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    .settings-card {
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
}