/* =============================================
   週読 - Design System & Styles
   ============================================= */

/* CSS Variables */
:root {
    /* Colors - Warm, Paper-like palette */
    --color-bg: #F6F5F1;
    --color-bg-warm: #F5F2ED;
    --color-bg-accent: #EDE8E0;
    --color-text: #2C2824;
    --color-text-secondary: #5C5650;
    --color-text-muted: #8A847C;
    --color-accent: #8B7355;
    --color-accent-dark: #6B5940;
    --color-accent-light: #C4B49A;
    --color-gold: #C9A962;
    --color-border: #E0DCD5;
    --color-white: #FFFFFF;

    /* Typography */
    --font-serif: 'Shippori Mincho', 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(44, 40, 36, 0.06);
    --shadow-md: 0 4px 20px rgba(44, 40, 36, 0.1);
    --shadow-lg: 0 8px 40px rgba(44, 40, 36, 0.15);
    --shadow-book: 0 20px 60px rgba(44, 40, 36, 0.2);
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-serif);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =============================================
   Navigation
   ============================================= */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--color-bg);
    backdrop-filter: none;
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    color: var(--color-text);
    text-decoration: none;
}

.nav-logo-mark {
    display: inline-block;
    width: 42px;
    height: 42px;
    background-image: url('assets/logo-mark.png');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    mix-blend-mode: multiply;
    flex-shrink: 0;
}

.nav-logo-word {
    display: inline-block;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-text);
    line-height: 1;
}

@media (max-width: 640px) {
    .nav-logo {
        gap: 6px;
    }
    .nav-logo-mark {
        width: 18px;
        height: 18px;
    }
    .nav-logo-word {
        font-size: 0.95rem;
    }
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
}

.nav-links a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    letter-spacing: 0.05em;
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-cta {
    background: var(--color-text);
    color: var(--color-white) !important;
    padding: var(--space-sm) var(--space-lg);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
}

.nav-login {
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
}

.nav-login:hover {
    border-color: var(--color-accent);
    color: var(--color-text);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
    min-height: 100vh;
    padding: calc(80px + var(--space-2xl)) var(--space-xl) var(--space-3xl);
    display: flex;
    align-items: flex-start;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Week Badge */
.week-badge {
    text-align: center;
    margin-bottom: var(--space-2xl);
    animation: fadeInDown 0.8s ease;
}

.week-number {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-gold), var(--color-accent));
    color: var(--color-white);
    padding: var(--space-xs) var(--space-lg);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.week-date {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

.week-remaining {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 0.2rem 0.5rem;
    background: var(--color-white);
}

.week-remaining-below {
    display: block;
    width: fit-content;
    margin: 6px auto 0;
}

/* Book Showcase */
.book-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: flex-start;
    margin-top: calc(var(--space-md) * -1);
    animation: fadeIn 1s ease 0.3s both;
}

/* Book Visual */
.book-visual {
    position: relative;
    display: flex;
    justify-content: center;
    perspective: 1000px;
    transform: translateY(0);
}

.book-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(201, 169, 98, 0.15) 0%, transparent 70%);
    filter: blur(40px);
    z-index: -1;
}

.book-cover {
    max-width: 280px;
    height: auto;
    border-radius: 4px;
    box-shadow: var(--shadow-book);
    transition: transform var(--transition-slow);
}

.book-cover:hover {
    transform: rotateY(-5deg) scale(1.02);
}

.book-shadow {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 20px;
    background: radial-gradient(ellipse, rgba(44, 40, 36, 0.2) 0%, transparent 70%);
    filter: blur(10px);
}

/* Book Info */
.book-info {
    padding: 0;
}

.book-category {
    font-size: 0.75rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-md);
}

.book-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: var(--space-md);
    letter-spacing: 0.03em;
    word-break: keep-all;
    overflow-wrap: anywhere;
}

.book-author {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.book-quote {
    position: relative;
    padding: var(--space-xl);
    background: var(--color-bg-warm);
    border-left: 3px solid var(--color-gold);
    margin-bottom: var(--space-2xl);
    border-radius: 0 8px 8px 0;
}

.book-quote p {
    font-size: 1.125rem;
    font-style: italic;
    line-height: 1.9;
    color: var(--color-text);
}

.book-description {
    margin-bottom: var(--space-2xl);
}

.book-description p {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

/* CTA Button */
.book-cta {
    text-align: left;
    margin-top: var(--space-lg);
}

.cta-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    border-radius: 8px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    flex: 1;
    /* ボタンの幅を揃える */
    min-width: 200px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-amazon {
    background: linear-gradient(135deg, #2C2824 0%, #3D3830 100%);
    color: var(--color-white);
}

.btn-icon {
    font-size: 1.25rem;
}

.btn-text {
    flex: 1;
    text-align: center;
}

.btn-price {
    background: rgba(255, 255, 255, 0.15);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-size: 0.875rem;
}

.affiliate-note {
    display: none;
}

/* Countdown */
.countdown-section {
    text-align: center;
    margin-top: var(--space-4xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid var(--color-border);
    animation: fadeIn 1s ease 0.6s both;
}

.countdown-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    letter-spacing: 0.2em;
    margin-bottom: var(--space-lg);
}

.countdown {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-lg);
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-value {
    font-size: 3rem;
    font-weight: 300;
    color: var(--color-text);
    line-height: 1;
}

.countdown-unit {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    letter-spacing: 0.1em;
}

.countdown-message {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-style: italic;
}

/* =============================================
   Newsletter Section
   ============================================= */
.newsletter {
    background: linear-gradient(180deg, var(--color-bg-warm) 0%, var(--color-bg-accent) 100%);
    padding: var(--space-4xl) var(--space-xl);
}

.newsletter-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.newsletter-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 2;
    margin-bottom: var(--space-2xl);
}

.newsletter-form {
    display: flex;
    gap: var(--space-md);
    max-width: 450px;
    margin: 0 auto var(--space-lg);
}

.newsletter-input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: var(--font-serif);
    font-size: 1rem;
    background: var(--color-white);
    transition: border-color var(--transition-fast);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.newsletter-btn {
    padding: var(--space-md) var(--space-xl);
    background: var(--color-text);
    color: var(--color-white);
    border: none;
    border-radius: 6px;
    font-family: var(--font-serif);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.newsletter-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
}

.newsletter-privacy {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =============================================
   About Section
   ============================================= */
.about {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg);
}

.about-container {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--space-2xl);
    color: var(--color-text);
}

.about-content p {
    font-size: 1rem;
    line-height: 2.2;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.about-content strong {
    color: var(--color-text);
    font-weight: 500;
}

.about-signature {
    font-style: italic;
    color: var(--color-accent);
    margin-top: var(--space-2xl);
}

/* =============================================
   Archive Section
   ============================================= */
.archive {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-warm);
}

.archive-container {
    max-width: 1000px;
    margin: 0 auto;
}

.archive-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.archive-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.archive-item {
    background: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.archive-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.archive-cover {
    width: 100%;
    height: 200px;
    object-fit: contain;
    background: var(--color-bg);
    padding: var(--space-lg);
}

.archive-info {
    padding: var(--space-lg);
}

.archive-week {
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.archive-book-title {
    font-size: 1rem;
    font-weight: 500;
    margin: var(--space-sm) 0;
    line-height: 1.4;
}

.archive-author {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.archive-more {
    display: block;
    text-align: center;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.archive-more:hover {
    color: var(--color-accent-dark);
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--color-text);
    color: var(--color-bg);
    padding: var(--space-3xl) var(--space-xl);
}

.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    margin-bottom: var(--space-xl);
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.1em;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-accent-light);
    margin-top: var(--space-sm);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-links a {
    color: var(--color-accent-light);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* =============================================
   Auth Page
   ============================================= */
.auth-page {
    min-height: 100vh;
    padding: calc(80px + var(--space-2xl)) var(--space-xl) var(--space-4xl);
}

.auth-container {
    max-width: 1100px;
    margin: 0 auto;
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.auth-title {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.auth-lead {
    color: var(--color-text-secondary);
}

.auth-storage-note {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    margin-top: var(--space-sm);
}

.auth-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.auth-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.auth-card h2 {
    margin-bottom: var(--space-lg);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.auth-form label {
    margin-top: var(--space-sm);
    font-size: 0.9rem;
}

.auth-form input,
.auth-form select {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.7rem 0.8rem;
    font-family: var(--font-serif);
    background: var(--color-white);
}

.auth-form input:focus,
.auth-form select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.auth-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.auth-checkbox input {
    width: auto;
}

.auth-btn {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--color-text);
    color: var(--color-white);
    border: none;
    border-radius: 6px;
    font-family: var(--font-serif);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.auth-btn:hover {
    background: var(--color-accent-dark);
}

.auth-message {
    min-height: 1.4rem;
    margin-top: var(--space-sm);
    font-size: 0.85rem;
    color: var(--color-accent-dark);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-lg) 0 var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    border-top: 1px solid var(--color-border);
}

.oauth-buttons {
    display: grid;
    gap: var(--space-sm);
}

.oauth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.7rem 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text);
    font-family: var(--font-serif);
    cursor: pointer;
}

.oauth-btn:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-warm);
}

.oauth-icon {
    display: inline-flex;
    width: 1.3rem;
    height: 1.3rem;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    line-height: 1;
}

.oauth-apple .oauth-icon,
.oauth-x .oauth-icon {
    color: #111;
}

.oauth-facebook .oauth-icon {
    color: #1877f2;
}

.oauth-google .oauth-icon {
    color: #4285f4;
}

/* =============================================
   Reading Database Page
   ============================================= */
.reading-page {
    min-height: 100vh;
    padding: calc(80px + var(--space-2xl)) var(--space-xl) var(--space-4xl);
    background: var(--color-bg-warm);
}

.reading-container {
    max-width: 1100px;
    margin: 0 auto;
}

.reading-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.reading-title {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.reading-lead {
    color: var(--color-text-secondary);
}

.reading-user {
    color: var(--color-accent-dark);
    margin-top: var(--space-sm);
    font-size: 0.9rem;
}

.reading-logout {
    margin-top: var(--space-md);
    border: 1px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text-secondary);
    border-radius: 6px;
    padding: 0.35rem 0.8rem;
    font-family: var(--font-serif);
    cursor: pointer;
}

.reading-gate {
    max-width: 560px;
    margin: 0 auto;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-xl);
    text-align: center;
}

.reading-gate-btn {
    display: inline-block;
    text-decoration: none;
    margin-top: var(--space-md);
}

.reading-grid {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--space-xl);
}

.reading-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.reading-card h2 {
    margin-bottom: var(--space-lg);
}

.reading-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.reading-form input,
.reading-form select,
.reading-form textarea {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.7rem 0.8rem;
    font-family: var(--font-serif);
    background: var(--color-white);
}

.reading-form input:focus,
.reading-form select:focus,
.reading-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.reading-list-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

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

.reading-list {
    display: grid;
    gap: var(--space-md);
}

.reading-item {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: var(--space-md);
    background: var(--color-bg);
}

.reading-item-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

.reading-item-title {
    font-size: 1.05rem;
    margin-bottom: 0.1rem;
}

.reading-item-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.reading-item-badges {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    flex-wrap: wrap;
}

.reading-badge {
    font-size: 0.72rem;
    border: 1px solid var(--color-border);
    border-radius: 99px;
    padding: 0.1rem 0.55rem;
    color: var(--color-text-secondary);
}

.reading-note {
    margin-top: var(--space-sm);
    font-size: 0.88rem;
    color: var(--color-text-secondary);
}

.reading-delete {
    border: 1px solid #d6b6b0;
    background: #fff4f2;
    color: #8f3b2e;
    border-radius: 6px;
    padding: 0.3rem 0.65rem;
    cursor: pointer;
}

.reading-empty {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: var(--space-lg) 0;
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@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);
    }
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 900px) {
    .book-showcase {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        text-align: center;
    }

    .book-info {
        padding: 0;
    }

    .book-title {
        font-size: 2.25rem;
    }

    .book-visual {
        transform: translateY(0);
    }

    .book-cta {
        text-align: center;
    }

    .archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .nav-links a:not(.nav-cta):not(.nav-login) {
        display: none;
    }

    .nav-links {
        gap: var(--space-sm);
    }

    .nav-login,
    .nav-cta {
        font-size: 0.75rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .hero {
        padding: calc(70px + var(--space-2xl)) var(--space-md) var(--space-2xl);
    }

    .book-title {
        font-size: 1.75rem;
    }

    .book-cover {
        max-width: 200px;
    }

    .book-visual {
        transform: translateY(0);
    }

    .countdown-value {
        font-size: 2rem;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .archive-grid {
        grid-template-columns: 1fr;
    }

    .auth-page {
        padding: calc(70px + var(--space-xl)) var(--space-md) var(--space-2xl);
    }

    .auth-grid {
        grid-template-columns: 1fr;
    }

    .reading-page {
        padding: calc(70px + var(--space-xl)) var(--space-md) var(--space-2xl);
    }

    .reading-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-md);
    }
}