:root {
    /* Color Palette */
    --primary-red: #D32F2F; /* Material Red 700 - Strong contrast, professional */
    --primary-red-hover: #B71C1C;
    --bg-color: #F5F7FA;
    --card-bg: #FFFFFF;
    --text-main: #333333;
    --text-muted: #666666;
    --border-color: #E0E0E0;
    
    /* Spacing & Layout */
    --spacing-unit: 1rem;
    --container-max-width: 600px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.maintenance-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-unit);
}

.content {
    background-color: var(--card-bg);
    padding: calc(var(--spacing-unit) * 3);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    max-width: var(--container-max-width);
    width: 100%;
    text-align: center;
    border-top: 6px solid var(--primary-red);
}

.icon-wrapper {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    display: flex;
    justify-content: center;
}

.maintenance-icon {
    width: 64px;
    height: 64px;
    color: var(--primary-red);
    animation: pulse 3s infinite ease-in-out;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-unit);
    color: var(--text-main);
}

.message {
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: var(--text-muted);
}

.message p {
    margin-bottom: 0.5rem;
}

.estimated-time {
    font-weight: 600;
    color: var(--text-main);
    margin-top: 1rem;
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #FFF5F5; /* Very light red bg */
    border-radius: 4px;
    color: var(--primary-red);
}

.actions {
    margin-top: calc(var(--spacing-unit) * 1.5);
}

.btn-primary {
    display: inline-block;
    background-color: var(--primary-red);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

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

.btn-primary:active {
    transform: translateY(1px);
}

.btn-primary:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
}

/* Animation for the icon */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

/* Responsive Adjustments */
@media (max-width: 480px) {
    .content {
        padding: calc(var(--spacing-unit) * 1.5);
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .maintenance-icon {
        width: 48px;
        height: 48px;
    }
}