:root {
    --white: #ffffff;
    --off-white: #f8f9fa;
    --surface: #f0f4ff;
    --black: #0a0a0a;
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --blue-100: #dbeafe;
    --green-500: #10b981;
    --green-100: #d1fae5;
    --yellow-500: #f59e0b;
    --yellow-100: #fef3c7;
    --red-400: #f87171;
    --red-100: #fee2e2;
    --radius-sm: 16px;
    --radius-md: 20px;
    --radius-lg: 28px;
    --radius-pill: 100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.15;
}

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

/* NAV */
.nav {
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand img {
    height: 28px;
}

.nav-brand span {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--black);
}

.nav-link {
    padding: 8px 18px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--gray-500);
    border-radius: var(--radius-pill);
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--black);
    background: var(--gray-100);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-switcher {
    display: flex;
    gap: 2px;
    background: var(--gray-100);
    padding: 3px;
    border-radius: var(--radius-pill);
    margin-left: 12px;
}

.lang-btn {
    padding: 5px 11px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-400);
    border-radius: var(--radius-pill);
    transition: all 0.2s;
}

.lang-btn.active {
    background: var(--white);
    color: var(--black);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.lang-btn:not(.active):hover {
    color: var(--gray-700);
}

/* CONTAINER */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* HERO */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    color: var(--black);
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* GPU SELECTOR */
.selector-section {
    padding: 0 0 60px;
}

.selector-card {
    max-width: 560px;
    margin: 0 auto;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.selector-label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--black);
}

.gpu-search-wrap {
    position: relative;
}

.gpu-search {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    color: var(--black);
    background: var(--white);
    outline: none;
    transition: border-color 0.2s;
}

.gpu-search:focus {
    border-color: var(--blue-600);
}

.gpu-search::placeholder {
    color: var(--gray-400);
}

.gpu-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    margin-top: 4px;
    max-height: 320px;
    overflow-y: auto;
    z-index: 50;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
    display: none;
}

.gpu-dropdown.open {
    display: block;
}

.gpu-group-label {
    padding: 10px 16px 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-400);
    position: sticky;
    top: 0;
    background: var(--white);
}

.gpu-option {
    padding: 10px 16px;
    font-size: 0.92rem;
    cursor: pointer;
    transition: background 0.15s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gpu-option:hover {
    background: var(--surface);
}

.gpu-option .vram-badge {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--blue-600);
    background: var(--blue-100);
    padding: 2px 8px;
    border-radius: 6px;
}

.selected-gpu {
    margin-top: 16px;
    padding: 14px 18px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    display: none;
    align-items: center;
    justify-content: space-between;
}

.selected-gpu.visible {
    display: flex;
}

.selected-gpu-name {
    font-weight: 600;
    color: var(--black);
}

.selected-gpu-vram {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--blue-600);
}

.selected-gpu-clear {
    margin-left: 12px;
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 1.2rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.selected-gpu-clear:hover {
    color: var(--red-400);
}

/* RESULTS */
.results-section {
    padding: 0 0 80px;
}

.results-header {
    text-align: center;
    margin-bottom: 40px;
}

.results-header h2 {
    font-size: 1.8rem;
    color: var(--black);
    margin-bottom: 8px;
}

.results-header p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--gray-400);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.empty-state p {
    font-size: 1.05rem;
}

/* MODEL GRID */
.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.model-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--blue-400);
}

.model-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.model-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--black);
}

.model-params {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--gray-500);
    background: var(--gray-100);
    padding: 3px 10px;
    border-radius: 6px;
    white-space: nowrap;
}

.model-verdict {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.verdict-icon {
    font-size: 1.1rem;
}

.verdict-great {
    background: var(--green-100);
    color: #059669;
}

.verdict-tight {
    background: var(--yellow-100);
    color: #d97706;
}

.verdict-no {
    background: var(--red-100);
    color: #dc2626;
}

.model-specs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.spec-item {
    text-align: center;
    padding: 8px 4px;
    background: var(--gray-100);
    border-radius: 8px;
}

.spec-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--gray-400);
    margin-bottom: 2px;
}

.spec-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gray-700);
}

.model-ollama {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--gray-100);
    font-size: 0.82rem;
    color: var(--gray-400);
}

.model-ollama code {
    font-family: 'JetBrains Mono', monospace;
    background: var(--gray-100);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--gray-700);
    font-size: 0.8rem;
}

/* NOTE */
.note-section {
    max-width: 700px;
    margin: 0 auto 60px;
    padding: 24px;
    background: var(--surface);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--blue-600);
}

.note-section h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.note-section p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* CTA */
.cta-section {
    text-align: center;
    padding: 80px 0;
    background: var(--surface);
}

.cta-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--gray-500);
    font-size: 1.1rem;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 15px 36px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-dark {
    background: var(--black);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.btn-dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* FOOTER */
.footer {
    padding: 48px 0;
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.footer-copy {
    color: var(--gray-400);
    font-size: 0.85rem;
}

.footer-copy a {
    color: var(--blue-600);
}

/* NO GPU STATE */
.no-gpu-card {
    max-width: 600px;
    margin: 0 auto;
    padding: 48px 40px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-lg);
    text-align: center;
}

.no-gpu-card .icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.no-gpu-card h3 {
    font-size: 1.6rem;
    margin-bottom: 6px;
    color: var(--black);
}

.no-gpu-card .subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--blue-600);
    margin-bottom: 16px;
}

.no-gpu-card p.desc {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
    max-width: 480px;
    margin: 0 auto;
}

/* CLOUD BANNER */
.cloud-banner {
    max-width: 800px;
    margin: 0 auto 60px;
    padding: 28px 32px;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: 20px;
    color: var(--white);
}

.cloud-banner .cloud-icon {
    font-size: 2rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.cloud-banner h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--white);
}

.cloud-banner p {
    font-size: 0.9rem;
    color: var(--gray-400);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .cloud-banner {
        flex-direction: column;
        text-align: center;
        align-items: center;
        padding: 24px;
    }

    .no-gpu-card {
        padding: 32px 24px;
    }
}

/* HAMBURGER + MOBILE MENU */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px;
    margin-left: auto;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--black);
    border-radius: 2px;
    transition: all 0.3s;
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 16px 32px 20px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    padding: 10px 0;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a:hover {
    color: var(--blue-600);
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0 40px;
    }

    .selector-card {
        padding: 24px;
    }

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

    .container {
        padding: 0 20px;
    }

    .cta-section {
        padding: 60px 0;
    }

    .nav-link {
        display: none;
    }

    .hamburger {
        display: flex;
    }
}