:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --border: rgba(255, 255, 255, 0.1);
    
    --level-safe: #10b981;
    --level-warn: #f59e0b;
    --level-danger: #f97316;
    --level-extreme: #ef4444;
    --level-deadly: #8b5cf6;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-attachment: fixed;
}

.ambient-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.ambient-ball {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.8;
    mix-blend-mode: screen;
    transition: transform 1.2s cubic-bezier(0.1, 0.9, 0.2, 1);
}

.ball-large {
    width: 800px;
    height: 800px;
    background-color: var(--accent); /* Blue */
    left: 25%;
    top: 30%;
    transform: translate(-50%, -50%);
}

.ball-medium {
    width: 600px;
    height: 600px;
    background-color: var(--level-deadly); /* Purple */
    left: 65%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.ball-small {
    width: 500px;
    height: 500px;
    background-color: var(--level-safe); /* Green/Teal */
    left: 45%;
    top: 65%;
    transform: translate(-50%, -50%);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.last-updated {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border);
}

.table-container {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    animation: fadeInUp 0.8s ease-out;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
}

th, td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid var(--border);
}

th {
    background: rgba(0, 0, 0, 0.2);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-align: center;
}

th:first-child {
    border-top-left-radius: 16px;
}
th:last-child {
    border-top-right-radius: 16px;
}

tbody tr {
    transition: all 0.2s ease;
    cursor: pointer;
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.level-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    white-space: nowrap;
}

.idx-val {
    font-weight: 800;
    font-size: 1.1rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal.show .modal-content {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--text-muted);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: var(--text-main);
}

.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
    margin-top: 1rem;
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

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

.methodology {
    margin-top: 4rem;
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
    animation: fadeInUp 1s ease-out;
}

.methodology h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.5rem;
}

.method-card {
    margin-bottom: 2rem;
}

.method-card h3 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.method-card p {
    margin-bottom: 1rem;
    color: var(--text-main);
}

.method-card ul {
    list-style-type: none;
    padding-left: 1rem;
}

.method-card li {
    margin-bottom: 0.8rem;
    position: relative;
    color: var(--text-main);
}

.method-card li::before {
    content: "•";
    color: var(--accent);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

th[data-tooltip] {
    position: relative;
    cursor: default; /* Keep regular mouse */
    text-decoration: underline dotted var(--text-muted);
    text-underline-offset: 4px;
}

th[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #ffffff;
    color: #0f172a;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.4;
    white-space: normal;
    width: max-content;
    max-width: 250px;
    border: 1px solid #cbd5e1;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    animation: tooltipFadeIn 0.2s forwards;
    text-transform: none;
    letter-spacing: normal;
}

th[data-tooltip]:hover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(0px);
    border: 6px solid transparent;
    border-top-color: #ffffff;
    z-index: 11;
    pointer-events: none;
    opacity: 0;
    animation: tooltipFadeIn 0.2s forwards;
}

@keyframes tooltipFadeIn {
    to { opacity: 1; }
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--text-main);
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.system-alerts-container {
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    animation: fadeInDown 0.8s ease-out;
}

.alert-item {
    background: rgba(239, 68, 68, 0.2); /* Slightly stronger red background */
    border: 1px solid rgba(239, 68, 68, 0.6);
    border-left: 4px solid var(--level-extreme);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    color: #ffffff; /* Clear white text for maximum readability */
    text-shadow: 0 1px 2px rgba(0,0,0,0.5); /* Adds depth */
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.25);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.3px;
}

.alert-item.info {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.4);
    border-left-color: var(--level-safe);
    color: #ffffff;
    box-shadow: none;
}