/* ==========================================================================
   Typography Is Important — Static Edition
   Original Design by Deniz Cem Önduygu
   ========================================================================== */

/* --- Reset & Global Variables --- */
:root {
    --bg-page: #ffffff;
    --text-primary: #222222;
    --text-muted: #666666;
    --accent: #b70000;
    --accent-hover: #8c0000;
    --border-dotted: #222222;
    --font-body: 'Alegreya Sans', sans-serif;
    --font-sc: 'Alegreya Sans SC', sans-serif;
    --font-heading: 'Roboto Slab', Georgia, serif;
    --font-subheading: 'Lora', Georgia, serif;
    --font-num: 'Major Mono Display', monospace;
    --container-max-width: 1240px;
    --transition: 0.2s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 24px;
    min-height: 100vh;
}

/* --- Links --- */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover,
a:focus {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* --- Header --- */
.site-header {
    background-color: var(--bg-page);
    width: 100%;
    padding: 40px 0 20px 0;
    position: relative;
    z-index: 100;
}

.header-inner {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.site-logo img {
    height: 23px;
    width: auto;
    display: block;
}

/* --- Page Container --- */
.page-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 40px 100px 40px;
}

.content-wrapper {
    background: transparent;
    padding: 0;
}

/* --- Hero Section --- */
.hero-section {
    display: flex;
    flex-direction: column;
}

.guide-subtitle {
    font-family: var(--font-sc);
    font-size: 18px;
    letter-spacing: 7px;
    text-transform: lowercase;
    color: var(--text-primary);
    margin-bottom: 25px;
    padding-left: 2px;
}

.main-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(3.5rem, 9.5vw, 8rem);
    line-height: 0.95;
    letter-spacing: -1px;
    color: var(--text-primary);
    margin: 0 0 15px 0;
}

.sub-title {
    font-family: var(--font-body);
    font-weight: 700;
    font-style: italic;
    font-size: clamp(1.8rem, 4.2vw, 3rem);
    line-height: 1.15;
    color: var(--text-primary);
    margin: 0;
}

.hero-spacer {
    height: clamp(80px, 14vw, 190px);
}

/* --- Rules Section --- */
.rules-section {
    display: flex;
    flex-direction: column;
}

.rule-row {
    display: grid;
    grid-template-columns: 200px minmax(320px, 420px) minmax(20px, 60px) 1fr;
    align-items: start;
    margin-bottom: 65px;
}

.col-number {
    grid-column: 1 / 2;
}

.rule-num {
    font-family: var(--font-num);
    font-size: 120px;
    line-height: 0.7;
    letter-spacing: -10px;
    font-weight: 400;
    color: var(--text-primary);
    margin: 0;
    user-select: none;
    text-align: right;
    padding-right: 30px;
}

.col-text {
    grid-column: 2 / 3;
}

.rule-text p {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 26px;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.rule-text p:last-child {
    margin-bottom: 0;
}

/* Emphasized terms */
.style4,
.footer-note .style4 {
    font-family: var(--font-sc);
    font-weight: inherit;
    letter-spacing: 0.3px;
    text-transform: lowercase;
}

.col-spacer {
    grid-column: 3 / 4;
}

.col-media {
    grid-column: 4 / 5;
}

.rule-image-wrap {
    width: 100%;
}

.rule-image {
    max-width: 100%;
    height: auto;
    display: block;
    border: none;
}

/* --- Guide Footer / References --- */
.guide-footer {
    margin-top: 20px;
}

.footer-row {
    margin-bottom: 0;
}

.footer-divider {
    border-top: 2px dotted var(--border-dotted);
    margin-bottom: 30px;
    width: 100%;
}

.footer-note p {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 26px;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-date {
    margin-top: 24px;
    margin-bottom: 4px !important;
}

.footer-author {
    margin-bottom: 24px !important;
}

.footer-note .footer-ref-title,
.footer-ref-title {
    font-family: var(--font-sc);
    font-weight: inherit;
    margin-top: 20px;
    margin-bottom: 8px !important;
    text-transform: lowercase;
}

.footer-ref-item {
    margin-bottom: 4px !important;
}

/* --- Back To Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: #f5f5f5;
    color: var(--accent);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.12);
}

/* --- Responsive Breakpoints --- */

/* Tablet & medium screens */
@media (max-width: 1024px) {
    .page-container {
        padding: 0 30px 80px 30px;
    }

    .rule-row {
        grid-template-columns: 160px 1fr 25px 1.1fr;
        margin-bottom: 50px;
    }

    .rule-num {
        font-size: 100px;
        line-height: 0.85;
    }
}

/* Small tablet & Mobile (< 768px) */
@media (max-width: 768px) {
    .site-header {
        padding: 25px 0 15px 0;
    }

    .header-inner {
        padding: 0 20px;
    }

    .page-container {
        padding: 0 20px 60px 20px;
    }

    .guide-subtitle {
        font-size: 16px;
        letter-spacing: 5px;
        line-height: 1.4;
        margin-bottom: 20px;
    }

    .main-title {
        font-size: clamp(3.4rem, 14.5vw, 5.5rem);
        letter-spacing: -1.5px;
        line-height: 0.95;
    }

    .hero-spacer {
        height: 60px;
    }

    .rule-row {
        display: flex;
        flex-direction: column;
        margin-bottom: 50px;
        gap: 15px;
    }

    .col-number {
        width: 100%;
    }

    .rule-num {
        font-size: clamp(80px, 22vw, 120px);
        line-height: 0.85;
        margin-bottom: 5px;
    }

    .col-text {
        width: 100%;
    }

    .rule-text p {
        padding-bottom: 8px;
    }

    .col-spacer {
        display: none;
    }

    .col-media {
        width: 100%;
        margin-top: 5px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* Extra small mobile (< 480px) */
@media (max-width: 480px) {
    .guide-subtitle {
        font-size: 14px;
        letter-spacing: 3.5px;
        line-height: 1.35;
    }

    .main-title {
        font-size: clamp(3.1rem, 14.5vw, 4.2rem);
        letter-spacing: -1px;
    }

    .rule-row {
        margin-bottom: 40px;
    }
}

/* Print Stylesheet */
@media print {
    body {
        background: #ffffff;
    }

    .site-header,
    .back-to-top {
        display: none !important;
    }

    .page-container {
        max-width: 100%;
        padding: 0;
    }

    .rule-row {
        page-break-inside: avoid;
        margin-bottom: 30px;
    }

    a {
        color: #000000;
        text-decoration: underline;
    }
}