:root {
    --color-bg: oklch(98% 0.005 250);
    --color-surface: oklch(100% 0 0);
    --color-border: oklch(88% 0.01 250);

    --color-text-primary: oklch(18% 0.02 250);
    --color-text-secondary: oklch(45% 0.015 250);
    --color-text-tertiary: oklch(62% 0.01 250);

    --color-accent: oklch(45% 0.18 280);
    --color-accent-hover: oklch(38% 0.2 280);
    --color-accent-light: oklch(92% 0.05 280);

    --color-success: oklch(55% 0.15 145);
    --color-warning: oklch(65% 0.18 85);

    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(0.75rem, 1.5vw, 1rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.5rem, 3vw, 2.5rem);
    --space-xl: clamp(2rem, 4vw, 4rem);
    --space-2xl: clamp(3rem, 6vw, 6rem);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: var(--font-display);
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background: color-mix(in oklch, var(--color-surface) 85%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 700;
    text-decoration: none;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.logo-bracket {
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.logo-text {
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

/* Hero */
.hero {
    padding: var(--space-2xl) var(--space-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
}

.hero-accent {
    color: var(--color-accent);
    display: block;
}

.hero-description {
    font-size: clamp(1.1rem, 1.5vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    position: relative;
}

.trend-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
}

.trend-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-success));
}

.trend-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.trend-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin: var(--space-sm) 0;
}

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

.trend-keyword {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-primary);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-accent-light);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--color-accent);
}

/* Sections */
.section {
    padding: var(--space-2xl) var(--space-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.section-alt {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    margin: var(--space-xl) auto;
}

.section-header {
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: clamp(2rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* Filters */
.filters {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.filter-select {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-select:hover {
    border-color: var(--color-accent);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

/* Weekly List */
.weekly-list {
    display: grid;
    gap: var(--space-lg);
}

.weekly-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.weekly-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-accent-light), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.weekly-item:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px color-mix(in oklch, var(--color-accent) 15%, transparent);
}

.weekly-item:hover::before {
    opacity: 1;
}

.weekly-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.weekly-issue {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
}

.weekly-date {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
}

.weekly-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.weekly-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    position: relative;
    z-index: 1;
}

.keyword-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Domain Grid */
.domain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--space-lg);
}

.domain-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.domain-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px color-mix(in oklch, var(--color-text-primary) 8%, transparent);
}

.domain-name {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    word-break: break-all;
}

.domain-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-success);
    margin-bottom: var(--space-xs);
}

.domain-appraisal {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.domain-evaluation {
    background: var(--color-accent-light);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    border-left: 3px solid var(--color-accent);
}

.domain-relevance {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.domain-reason {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.domain-actions {
    display: flex;
    gap: var(--space-sm);
}

.btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    border: none;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px color-mix(in oklch, var(--color-accent) 30%, transparent);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent-light);
}

/* Footer */
.footer {
    background: var(--color-text-primary);
    color: oklch(85% 0.01 250);
    padding: var(--space-xl) var(--space-lg);
    margin-top: var(--space-2xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: var(--space-xl);
}

.footer-brand .logo {
    color: white;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    color: oklch(65% 0.01 250);
    font-size: 0.95rem;
}

.footer-legal {
    text-align: right;
    font-size: 0.85rem;
    color: oklch(65% 0.01 250);
    line-height: 1.8;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .hero-visual {
        order: -1;
    }

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

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--space-md);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

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

    .footer-legal {
        text-align: left;
    }
}

/* Weekly Detail Page */
.weekly-hero {
    background: linear-gradient(135deg,
        oklch(92% 0.08 280) 0%,
        oklch(95% 0.05 260) 100%);
    padding: var(--space-2xl) var(--space-lg) var(--space-xl);
    position: relative;
    overflow: hidden;
}

.weekly-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-success));
}

.weekly-hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
    transition: transform 0.2s ease;
}

.back-link:hover {
    transform: translateX(-4px);
}

.weekly-meta {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.weekly-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

/* Article */
.article {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg);
}

.article-heading {
    font-size: clamp(1.75rem, 2.5vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
    position: relative;
    padding-left: var(--space-md);
}

.article-heading::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.25em;
    bottom: 0.25em;
    width: 4px;
    background: var(--color-accent);
    border-radius: 2px;
}

.trends-section {
    margin-bottom: var(--space-2xl);
}

.trend-keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.trend-keyword-large {
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: var(--radius-md);
    font-weight: 600;
    border: 1px solid color-mix(in oklch, var(--color-accent) 20%, transparent);
}

.trend-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    padding: var(--space-lg);
    background: var(--color-surface);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-md);
}

/* Domain List Vertical */
.domain-list-vertical {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.domain-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.domain-item:hover {
    transform: translateX(8px);
    border-color: var(--color-accent);
    box-shadow: -4px 0 0 var(--color-accent),
                0 8px 24px color-mix(in oklch, var(--color-accent) 12%, transparent);
}

.domain-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--space-lg);
    gap: var(--space-lg);
}

.domain-item-number {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-light);
    line-height: 1;
    min-width: 3rem;
}

.domain-item-info {
    flex: 1;
}

.domain-item-name {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    word-break: break-all;
}

.domain-item-meta {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
}

.domain-item-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-success);
}

.domain-item-appraisal {
    font-size: 0.9rem;
    color: var(--color-text-tertiary);
    align-self: center;
}

.domain-item-score {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-accent);
    align-self: center;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent-light);
    border-radius: var(--radius-sm);
}

.domain-item-analysis {
    font-size: 1.05rem;
    color: var(--color-text-primary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.domain-item-actions {
    display: flex;
    gap: var(--space-sm);
}

@media (max-width: 768px) {
    .domain-item-header {
        flex-direction: column;
    }

    .domain-item-number {
        font-size: 1.75rem;
    }

    .domain-item-meta {
        flex-direction: column;
        gap: var(--space-xs);
    }
}