:root {
    --primary-blue: #007bff;
    --primary-orange: #ff7f00;
    --dark-bg: #121212;
    --card-bg: #1e1e1e;
    --text-color: #f0f0f0;
    --border-color: #333;
    --accent-color: #00aaff;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Header & Nav */
.main-header {
    background: linear-gradient(to right, var(--primary-blue), var(--primary-orange));
    padding: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: 2px;
    text-decoration: none;
}

nav .nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.1em;
    font-weight: 600;
    margin-left: 25px;
    transition: color 0.3s ease;
}

nav .nav-link.active {
    color: var(--accent-color);
}

nav .nav-link:hover {
    color: var(--primary-orange);
}

/* Page Content Containers */
.content, .main-layout {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.content-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.section-title {
    font-size: 2.2em;
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-orange);
}

/* Main List Layout */
.main-layout {
    display: grid;
    grid-template-columns: 2fr 4fr 2fr;
    gap: 20px;
    align-items: flex-start;
}

.left-panel h2, .center-panel h2, .right-panel h2 {
    font-size: 1.5em;
    text-align: center;
    color: var(--primary-blue);
    margin-top: 0;
}

/* Left Panel - Mechanics List */
#mechanics-list-container {
    list-style: none;
    padding: 0;
    margin: 0;
}

.list-item {
    background-color: #2a2a2a;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.list-item:hover {
    background-color: #383838;
    transform: translateX(5px);
}

.list-item.active {
    background-color: var(--primary-orange);
    color: var(--dark-bg);
    font-weight: bold;
    border-color: var(--primary-orange);
}

.list-item h3 {
    margin: 0;
    font-size: 1.1em;
}

/* Center Panel - Mechanic Details */
#mechanic-details-container {
    min-height: 500px; /* Adjust as needed */
}

.placeholder-text {
    text-align: center;
    font-style: italic;
    color: #999;
    padding-top: 20px;
}

.mechanic-detail h3 {
    text-align: center;
    font-size: 2em;
    color: var(--primary-orange);
    margin-bottom: 10px;
}

.mechanic-info {
    font-size: 1.1em;
    text-align: center;
    margin-bottom: 20px;
}

.mechanic-info span {
    font-weight: bold;
}

.video-embed {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    margin-top: 15px;
    border-radius: 5px;
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 5px;
    border: none;
}

.mechanic-description-box {
    background-color: #2a2a2a;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    margin-top: 20px;
}

.tags-list, .history-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

.tag-item, .history-item {
    background-color: var(--primary-blue);
    color: var(--text-color);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.8em;
}

/* Right Panel - Records */
#records-container h2 {
    text-align: left;
}
.records-list {
    list-style: none;
    padding: 0;
}

.records-list li {
    background-color: #2a2a2a;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 8px;
    border: 1px solid var(--border-color);
}

.records-list a {
    color: var(--primary-orange);
    text-decoration: none;
    font-weight: 600;
}

/* Leaderboard Page */
.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.leaderboard-table th, .leaderboard-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.leaderboard-table th {
    background-color: #333;
    color: var(--primary-orange);
    font-weight: 600;
}

.disclaimer {
    text-align: center;
    font-style: italic;
    color: #999;
}

/* Submit & Rules Pages */
.submit-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.submit-form label {
    font-weight: 600;
}

.submit-form input, .submit-form textarea, .submit-form select {
    background-color: #333;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 10px;
    border-radius: 5px;
    font-size: 1em;
}

.submit-form button {
    background-color: var(--primary-blue);
    color: var(--text-color);
    border: none;
    padding: 12px 20px;
    font-size: 1.1em;
    font-weight: 700;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.submit-form button:hover {
    background-color: var(--primary-orange);
}

.rules-container ul {
    list-style-type: disc;
    padding-left: 20px;
}

.rules-container li {
    margin-bottom: 10px;
}

.main-footer {
    text-align: center;
    padding: 20px;
    background-color: #0d0d0d;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    .left-panel, .center-panel, .right-panel {
        width: 100%;
    }
    .header-container {
        flex-direction: column;
        text-align: center;
    }
    nav {
        margin-top: 10px;
    }
    nav .nav-link {
        margin: 0 8px;
    }
}