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

:root {
    --black: #000;
    --white: #fff;
    --gray-100: #f5f5f7;
    --gray-200: #e8e8ed;
    --gray-400: #86868b;
    --gray-600: #6e6e73;
    --gray-800: #1d1d1f;
    --max-width: 980px;
    --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 60px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--white);
    color: var(--gray-800);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

/* ---- Nav ---- */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: background var(--transition), backdrop-filter var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-800);
    text-decoration: none;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-tag {
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--gray-400);
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.8rem;
    color: var(--gray-600);
    text-decoration: none;
    transition: color var(--transition);
}

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

.nav-contact {
    color: var(--black) !important;
    font-weight: 500;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: var(--gray-800);
    transition: all var(--transition);
    transform-origin: center;
}

.nav-toggle.open span:first-child {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav-toggle.open span:last-child {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* ---- Hero ---- */

.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 160px 24px 120px;
}

.hero h1 {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 500;
    letter-spacing: -0.04em;
    line-height: 1.05;
    color: var(--black);
    opacity: 0;
    transform: translateY(30px);
    animation: heroIn 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

.hero p {
    margin-top: 28px;
    font-size: 1.15rem;
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 480px;
    opacity: 0;
    transform: translateY(20px);
    animation: heroIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.35s forwards;
}

.link-arrow {
    display: inline-block;
    margin-top: 40px;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--black);
    text-decoration: none;
    border-bottom: 1.5px solid var(--black);
    padding-bottom: 2px;
    transition: opacity var(--transition), transform var(--transition);
    opacity: 0;
    transform: translateY(20px);
    animation: heroIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.55s forwards;
}

.link-arrow:hover {
    opacity: 0.6;
}

@keyframes heroIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ---- Marquee ---- */

.marquee-section {
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    padding: 20px 0;
    overflow: hidden;
}

.marquee {
    position: relative;
    width: 100%;
}

.marquee-track {
    display: flex;
    gap: 48px;
    width: max-content;
    animation: scroll 30s linear infinite;
}

.marquee-track span {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    white-space: nowrap;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ---- Sections shared ---- */

.section-header {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 56px;
}

.section-header h2 {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-header.in h2 {
    opacity: 1;
    transform: none;
}

/* ---- Services ---- */

.services {
    padding: 120px 0 0;
}

.services-list {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.service-item {
    display: flex;
    align-items: baseline;
    gap: 40px;
    padding: 40px 0;
    border-top: 1px solid var(--gray-200);
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-item.in {
    opacity: 1;
    transform: none;
}

.service-item:nth-child(1) { transition-delay: 0s; }
.service-item:nth-child(2) { transition-delay: 0.1s; }
.service-item:nth-child(3) { transition-delay: 0.2s; }
.service-item:nth-child(4) { transition-delay: 0.3s; }

.service-number {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-400);
    min-width: 28px;
    font-variant-numeric: tabular-nums;
}

.service-body h3 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.service-body p {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 500px;
}

/* ---- Highlight ---- */

.highlight {
    padding: 120px 0;
}

.highlight-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.highlight-text {
    font-size: clamp(1.5rem, 3.5vw, 2.4rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.3;
    color: var(--black);
    max-width: 700px;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.highlight-text.in {
    opacity: 1;
    transform: none;
}

/* ---- Approach ---- */

.approach {
    padding: 120px 0;
    background: var(--gray-100);
}

.approach-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.approach-item {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.approach-item.in {
    opacity: 1;
    transform: none;
}

.approach-item:nth-child(1) { transition-delay: 0s; }
.approach-item:nth-child(2) { transition-delay: 0.12s; }
.approach-item:nth-child(3) { transition-delay: 0.24s; }

.approach-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.approach-item p {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.65;
}

/* ---- Work / Projects ---- */

.work {
    padding: 120px 0;
}

.projects-showcase {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.project-card {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 56px;
    align-items: center;
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card.in {
    opacity: 1;
    transform: none;
}

.project-card.reverse {
    direction: rtl;
}

.project-card.reverse > * {
    direction: ltr;
}

.project-image {
    border-radius: 12px;
    overflow: hidden;
    background: var(--gray-100);
}

.project-image img {
    display: block;
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-image img {
    transform: scale(1.03);
}

.project-type {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
}

.project-details h3 {
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 12px 0 16px;
    line-height: 1.2;
}

.project-details p {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 24px;
}

.project-tech span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    padding: 5px 14px;
    border: 1px solid var(--gray-200);
    border-radius: 980px;
}

/* ---- Team ---- */

.team {
    padding: 120px 0;
    background: var(--gray-100);
}

.team-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.team-member {
    text-align: center;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.team-member.in {
    opacity: 1;
    transform: none;
}

.team-member:nth-child(1) { transition-delay: 0s; }
.team-member:nth-child(2) { transition-delay: 0.08s; }
.team-member:nth-child(3) { transition-delay: 0.16s; }
.team-member:nth-child(4) { transition-delay: 0.24s; }

.team-photo {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    background: var(--gray-200);
}

.team-photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.5s ease, transform 0.5s ease;
}

.team-member:hover .team-photo img {
    filter: grayscale(0%);
    transform: scale(1.04);
}

.team-member h4 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.team-member p {
    font-size: 0.8rem;
    color: var(--gray-400);
}

/* ---- Contact ---- */

.contact {
    padding: 120px 0;
    background: var(--gray-100);
}

.contact-layout {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-left h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.contact-left {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-left.in {
    opacity: 1;
    transform: none;
}

.contact-details {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-400);
    margin-bottom: 6px;
}

.contact-detail a,
.contact-detail span {
    font-size: 0.95rem;
    color: var(--gray-800);
    text-decoration: none;
    line-height: 1.5;
}

.contact-detail a:hover {
    text-decoration: underline;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s;
}

.contact-form.in {
    opacity: 1;
    transform: none;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 0;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--gray-800);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--gray-200);
    outline: none;
    transition: border-color var(--transition);
    border-radius: 0;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--gray-400);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--black);
}

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form button {
    margin-top: 12px;
    align-self: flex-start;
    padding: 14px 40px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--white);
    background: var(--black);
    border: none;
    border-radius: 980px;
    cursor: pointer;
    transition: opacity var(--transition);
}

.contact-form button:hover {
    opacity: 0.75;
}

.contact-form button:disabled {
    opacity: 0.4;
    cursor: default;
}

/* ---- Footer ---- */

.footer {
    border-top: 1px solid var(--gray-200);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-logo {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-800);
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.footer-right {
    display: flex;
    gap: 24px;
}

.footer-right a {
    font-size: 0.75rem;
    color: var(--gray-600);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-right a:hover {
    color: var(--black);
}

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        inset: 0;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 28px;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition);
    }

    .nav-links.open {
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .hero {
        padding: 130px 24px 80px;
    }

    .approach-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 56px;
    }

    .service-item {
        flex-direction: column;
        gap: 8px;
    }

    .project-card,
    .project-card.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 28px;
    }

    .project-image img {
        height: 220px;
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-left {
        flex-direction: column;
        gap: 4px;
    }
}