/* Global Styles */
:root {
    --color-primary: #00509E;
    --color-secondary: #FDC500;
    --color-background: #F7F8FA;
    --color-text-primary: #333333;
    --color-text-secondary: #777777;
    --color-border: #E0E0E0;
    --font-family: 'Arial', sans-serif;
    --font-size-base: 16px;
    --spacing-unit: 8px;
    --border-radius: 5px;
}

/* Resets */
body, h1, h2, h3, h4, h5, h6, p, ul, ol {
    margin: 0;
    padding: 0;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: var(--color-primary);
}

a:hover {
    text-decoration: underline;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-background);
}

/* Layout */
#app {
    display: flex;
    height: 100vh;
}

.topbar {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-unit) var(--spacing-unit) calc(var(--spacing-unit) * 2); 
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.branding h1 {
    font-size: 1.5rem;
    margin: 0;
}

.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    height: 24px;
    width: 30px;
}

.hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: white;
    transition: background-color 0.3s, transform 0.3s;
}

.sidebar {
    background-color: white;
    border-right: 1px solid var(--color-border);
    width: 250px;
    padding: var(--spacing-unit) 0;
}

.sidebar nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-unit);
}

.sidebar nav ul li {
    padding: var(--spacing-unit) calc(var(--spacing-unit) * 2);
}

.sidebar nav ul li a {
    color: var(--color-text-primary);
    font-weight: bold;
    padding: var(--spacing-unit);
    display: block;
    border-radius: var(--border-radius);
    transition: background-color 0.2s, color 0.2s;
}

.sidebar nav ul li a:hover {
    background-color: var(--color-primary);
    color: white;
}

.content {
    flex: 1;
    padding: calc(var(--spacing-unit) * 2);
    overflow-y: auto;
}

.view.hidden {
    display: none;
}

.view {
    animation: fadeIn 0.3s;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes hamburgerTransform {
    0%, 100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(45deg);
    }
}

@keyframes hamburgerTransformInverse {
    0%, 100% {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(-45deg);
    }
}

/* Fleet Overview */
#fleet-overview-chart-container {
    margin: var(--spacing-unit) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-unit);
}

.metrics {
    display: flex;
    gap: var(--spacing-unit);
    margin-top: var(--spacing-unit);
}

.metrics div {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: calc(var(--spacing-unit) * 1.5);
    text-align: center;
    flex: 1;
}

/* Risk Assessment Table */
.controls {
    margin-bottom: var(--spacing-unit);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-unit);
}

.data-table thead {
    background-color: var(--color-secondary);
    color: white;
}

.data-table th, .data-table td {
    padding: calc(var(--spacing-unit) * 1.5);
    border: 1px solid var(--color-border);
    text-align: left;
}

.data-table tbody tr:nth-child(odd) {
    background-color: #F9FAFB;
}

/* Settings Form */
form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-unit);
    margin-top: var(--spacing-unit);
}

form label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-unit);
    font-weight: bold;
}

form input, form button, form select {
    padding: var(--spacing-unit);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    outline: none;
    transition: border-color 0.2s;
}

form input:focus, form select:focus {
    border-color: var(--color-primary);
}

form button {
    background-color: var(--color-primary);
    color: white;
    font-weight: bold;
    cursor: pointer;
}

form button:hover {
    background-color: var(--color-secondary);
}

/* Responsive Sidebar */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: fixed;
        left: -100%;
        top: 0;
        transition: left 0.3s;
    }

    .topbar .hamburger span:nth-child(1) {
        transform-origin: left bottom;
    }

    .topbar .hamburger span:nth-child(3) {
        transform-origin: left top;
    }

    .sidebar.show {
        left: 0;
    }

    .content {
        padding-left: 0;
    }

    .sidebar.visible {
        left: 0;
    }
}