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

:root {
    /* Core Palette */
    --col-01: #0f172a; /* Deep Dark */
    --col-02: #1e293b; /* Dark */
    --col-03: #334155; /* Medium Dark */
    --col-04: #475569; /* Slate */
    --col-05: #1e3a8a; /* Primary Deep */
    --col-06: #2563eb; /* Primary Bright */
    --col-07: #e2e8f0; /* Light Gray */
    --col-08: #f8fafc; /* Off White */
    --col-09: #ffffff; /* White */
    --col-10: #000000; /* Black */
    --col-11: #d97706; /* Amber 600 */
    --col-12: rgb(145, 156, 227); /* Amber 400 */

    /* Theme Variables */
    --primary-color: var(--col-11);
    --text-color: var(--col-02);
    --bg-color: var(--col-09);
    --border-color: var(--col-07);
    --hover-bg: var(--col-08);
    --warning-bg: #fff3cd;
    --warning-border: #ffc107;
    --tip-bg: #d1ecf1;
    --tip-border: #17a2b8;
    --code-bg: var(--col-08);
    --table-header-bg: var(--col-08);
    --card-bg: var(--col-09);
    --hero-bg: var(--col-09);
    --text-muted: var(--col-04);
    --hero-gradient-start: var(--col-05);
    --hero-gradient-end: var(--col-03);
}

[data-theme="dark"] {
    --primary-color: var(--col-12);
    --text-color: var(--col-08);
    --bg-color: var(--col-01);
    --border-color: var(--col-03);
    --hover-bg: var(--col-02);
    --warning-bg: #744210;
    --warning-border: #d97706;
    --tip-bg: #065f73;
    --tip-border: #0891b2;
    --code-bg: var(--col-02);
    --table-header-bg: var(--col-02);
    --card-bg: var(--col-02);
    --hero-bg: var(--col-01);
    --text-muted: var(--col-07);
    --hero-gradient-start: var(--col-01);
    --hero-gradient-end: var(--col-02);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navbar {
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-brand:hover {
    opacity: 0.8;
}

.nav-logo {
    height: 40px;
    width: auto;
    display: block;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s, border-color 0.3s;
}

.theme-toggle:hover {
    background-color: var(--hover-bg);
}

.theme-toggle svg {
    display: none;
}

.theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Hero Section */
.hero {
    text-align: center;
    min-height: 28vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--hero-bg);
    background-image: url('static/media/RPNlogo_transperent_cropped.png');
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    margin-top: 6vh;
    color: white;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero-logo {
    max-width: 100%;
    height: auto;
    max-height: 150px;
    margin-bottom: 1rem;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.2));
}

.hero-text {
    font-size: 1.5rem;
    opacity: 0.95;
}

/* Features */
.features {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

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

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.feature-link:hover {
    opacity: 0.7;
}

/* Content Pages */
.content-page {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    gap: 2rem;
    flex: 1;
}

.sidebar {
    width: 250px;
    flex-shrink: 0;
}

.outline {
    position: sticky;
    top: 80px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.outline h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.outline ul {
    list-style: none;
}

.outline li {
    margin-bottom: 0.5rem;
}

.outline a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: color 0.3s;
}

.outline a:hover {
    color: var(--primary-color);
}

.content {
    flex: 1;
    max-width: 1000px;
}

.content h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.content h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.content h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.content p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

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

.content a:hover {
    text-decoration: underline;
}

.content ol,
.content ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.content code {
    background: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

thead {
    background: var(--table-header-bg);
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    color: var(--text-color);
}

/* Warning and Tip Boxes */
.warning-box,
.tip-box {
    padding: 1rem 1.25rem;
    border-radius: 6px;
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.warning-box {
    background: var(--warning-bg);
    border-color: var(--warning-border);
}

.tip-box {
    background: var(--tip-bg);
    border-color: var(--tip-border);
}

.warning-box strong,
.tip-box strong {
    display: block;
    margin-bottom: 0.5rem;
}

.warning-box p,
.tip-box p {
    margin-bottom: 0;
}

/* Footer */
.footer {
    margin-top: auto;
    background-color: var(--hover-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.social-links a {
    color: var(--text-color);
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.inconspicuous {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .hero-text {
        font-size: 1.2rem;
    }

    .content-page {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .outline {
        position: static;
    }
}