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

:root {
    --black: #000;
    --white: #e5e5e5;
    --muted: #555;
    --dim: #333;
    --accent: #d4a000;
}

html {
    font-size: 17px;
    scroll-behavior: smooth;
}

body {
    background: var(--black);
    color: var(--white);
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 2rem;
    background: var(--black);
    z-index: 100;
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    border-bottom: 1px solid #111;
}

header .logo {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--muted);
}

header .tagline {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
}

/* Main Layout */
main {
    display: flex;
    min-height: 100vh;
    padding-top: 4rem;
}

/* Left Nav - Tenet Titles */
.tenet-nav {
    position: fixed;
    top: 4rem;
    left: 0;
    width: 30%;
    height: calc(100vh - 4rem);
    padding: 3rem 2rem;
    overflow-y: auto;
    border-right: 1px solid #111;
}

.tenet-nav ul {
    list-style: none;
}

.tenet-nav li {
    margin-bottom: 1rem;
}

.nav-link {
    display: block;
    color: var(--dim);
    text-decoration: none;
    font-size: 0.85rem;
    line-height: 1.5;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.nav-link .num {
    display: inline-block;
    width: 2.5rem;
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
}

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

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

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

/* Right Content - Tenet Descriptions */
.tenet-content {
    margin-left: 30%;
    width: 70%;
    padding: 3rem 4rem 6rem;
    max-width: calc(700px + 30%);
}

/* Tenet Sections */
.tenet {
    min-height: 70vh;
    padding: 2rem 0 4rem;
    opacity: 0.3;
    transition: opacity 0.4s ease;
}

.tenet.active {
    opacity: 1;
}

.tenet-num {
    display: block;
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.tenet h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 2rem;
    line-height: 1.4;
    max-width: 600px;
}

/* Blockquotes - Opening Quotes */
.tenet blockquote {
    margin-bottom: 2rem;
    padding-left: 1rem;
    border-left: 2px solid var(--dim);
    max-width: 600px;
}

.tenet blockquote p {
    font-style: italic;
    font-size: 0.95rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.tenet blockquote cite {
    display: block;
    font-size: 0.8rem;
    color: var(--dim);
    font-style: normal;
}

.tenet p {
    margin-bottom: 1.5rem;
    color: var(--white);
    max-width: 600px;
}

.tenet p em {
    font-style: italic;
}

/* Closing Section */
.closing {
    margin-top: 4rem;
    padding-top: 4rem;
    border-top: 1px solid #222;
    min-height: auto;
    opacity: 1;
}

.closing p {
    margin-bottom: 1.5rem;
    color: var(--white);
    max-width: 600px;
}

.closing .github {
    margin-top: 3rem;
}

.closing .github a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent);
    padding-bottom: 2px;
    transition: opacity 0.2s ease;
}

.closing .github a:hover {
    opacity: 0.7;
}

/* Footer */
footer {
    margin-left: 30%;
    width: 70%;
    padding: 4rem 4rem 3rem;
    border-top: 1px solid #111;
}

footer p {
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* Mobile Layout - Stacked */
@media (max-width: 900px) {
    html {
        font-size: 16px;
    }

    header {
        padding: 1rem 1.5rem;
    }

    main {
        display: block;
        padding-top: 3.5rem;
    }

    .tenet-nav {
        display: none;
    }

    .tenet-content {
        margin-left: 0;
        width: 100%;
        max-width: 100%;
        padding: 2rem 1.5rem 4rem;
    }

    .tenet {
        min-height: auto;
        padding: 3rem 0;
        opacity: 1;
        border-bottom: 1px solid #151515;
    }

    .tenet:last-of-type {
        border-bottom: none;
    }

    .tenet-num {
        margin-bottom: 0.75rem;
    }

    .tenet h2 {
        font-size: 1.2rem;
        margin-bottom: 1.5rem;
    }

    .tenet blockquote {
        margin-bottom: 1.5rem;
    }

    .tenet blockquote p {
        font-size: 0.9rem;
    }

    .closing {
        margin-top: 2rem;
        padding-top: 3rem;
    }

    footer {
        margin-left: 0;
        width: 100%;
        padding: 3rem 1.5rem 2rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--black);
}

::-webkit-scrollbar-thumb {
    background: #222;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #333;
}