:root {
    --color-bg: #1a1a1a;
    --color-bg-light: #2a2a2a;
    --color-bg-card: #3a3a3a;
    --color-accent: #ff6b35;
    --color-accent-hover: #ff8555;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-border: #444444;
    
    --font-mono: 'Space Mono', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 50%;
    
    --transition: 0.3s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header__logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo__text {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: -1px;
}

.logo__subtitle {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-text-muted);
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.header__nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color var(--transition);
    position: relative;
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-accent);
}

.nav__link--active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.header__time {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-accent);
    font-weight: 700;
}

.main {
    padding: var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
}

.search-section {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.search-section__left {
    flex: 1;
}

.search-section__right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.search-box {
    margin-bottom: var(--spacing-md);
}

.search-box__input {
    width: 100%;
    max-width: 600px;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box__input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.search-box__input::placeholder {
    color: var(--color-text-muted);
    font-weight: 400;
}

.filters {
    display: flex;
    gap: var(--spacing-lg);
}

.filter-knob {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: grab;
    user-select: none;
    position: relative;
}

.filter-knob:active {
    cursor: grabbing;
}

.filter-knob__dial {
    width: 52px;
    height: 52px;
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: border-color var(--transition);
    background: transparent;
}

.filter-knob:hover .filter-knob__dial {
    border-color: rgba(255, 255, 255, 0.9);
}

.filter-knob--active .filter-knob__dial {
    border-color: var(--color-accent);
}

.filter-knob__indicator {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 10px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 1px;
    transform-origin: center 18px;
}

.filter-knob:hover .filter-knob__indicator {
    background: rgba(255, 255, 255, 0.9);
}

.filter-knob--active .filter-knob__indicator {
    background: var(--color-accent);
}

.filter-knob__label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-text);
    text-transform: uppercase;
}

.filter-knob__tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-card);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    border: 1px solid var(--color-border);
}

.filter-knob__tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-border);
}

.filter-knob--active .filter-knob__tooltip {
    opacity: 1;
}

.type-toggle {
    display: flex;
    gap: var(--spacing-md);
}

.type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.type-btn:hover,
.type-btn--active {
    color: var(--color-text);
}

.type-btn__circle {
    width: 40px;
    height: 40px;
    border: 2px solid currentColor;
    border-radius: var(--radius-full);
    position: relative;
    transition: all var(--transition);
}

.type-btn--active .type-btn__circle {
    border-color: var(--color-accent);
}

.type-btn--active .type-btn__circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.type-btn span {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.listings {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.listing-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}

.listing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.listing-card__image {
    position: relative;
    height: 160px;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.listing-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.listing-card:hover .listing-card__image img {
    transform: scale(1.05);
}

.listing-card__placeholder {
    color: var(--color-border);
}

.listing-card__content {
    padding: var(--spacing-md);
}

.listing-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.listing-card__title {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
}

.listing-card__badge {
    padding: 4px 8px;
    background: transparent;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-text-muted);
}

.listing-card__badge--alt {
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

.listing-card__badge--green {
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

.listing-card__badge--purple {
    border-color: var(--color-text-muted);
    color: var(--color-text-muted);
}

.listing-card__details {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.listing-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.listing-card__price {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
}

.listing-card__price small {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-left: 2px;
}

.listing-card__btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text);
    transition: color var(--transition);
}

.listing-card__btn:hover {
    color: var(--color-accent);
}

.btn-circle {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-full);
    position: relative;
    transition: background var(--transition);
}

.btn-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.listing-card__btn:hover .btn-circle {
    background: var(--color-accent);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.pagination__btn {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    position: relative;
}

.pagination__dot {
    position: absolute;
    top: -12px;
    width: 6px;
    height: 6px;
    background: transparent;
    border-radius: var(--radius-full);
}

.pagination__btn:hover {
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

.pagination__btn--active {
    color: var(--color-bg);
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.pagination__btn--active:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .header__nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .main {
        padding: var(--spacing-md);
    }
    
    .search-section {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .search-section__right {
        align-items: flex-start;
    }
    
    .filters {
        flex-wrap: wrap;
    }
    
    .listings {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav__link {
        font-size: 0.75rem;
    }
    
    .listing-card__footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}