:root {
    --robin-primary: #6b8cff;
    --robin-primary-dark: #5578f5;
    --robin-text: #1f2937;
    --robin-muted: #6b7280;
    --robin-bg: #ffffff;
    --robin-soft: #f7f8fc;
    --robin-border: #e5e7eb;
    --robin-dark: #0f172a;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Poppins", "Segoe UI", sans-serif;
    color: var(--robin-text);
    background: var(--robin-bg);
    line-height: 1.7;
}

img { max-width: 100%; display: block; }

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

.container {
    width: min(1140px, calc(100% - 2rem));
    margin: 0 auto;
}

.section { padding: 5rem 0; }
.section-soft { background: var(--robin-soft); }

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 3rem;
}

.section-head h2 {
    margin: 0 0 .75rem;
    font-size: clamp(1.75rem, 3vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -.02em;
}

.section-head p {
    margin: 0;
    color: var(--robin-muted);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--robin-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 1rem;
}

.logo {
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: .08em;
    color: var(--robin-text);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .06em;
    color: #4b5563;
    transition: color .2s;
}

.main-nav a:hover,
.main-nav a.active { color: var(--robin-primary); }

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    background: var(--robin-primary);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: .85rem 1.6rem;
    font-weight: 600;
    font-size: .92rem;
    transition: background .2s, transform .2s;
}

.btn-primary:hover {
    background: var(--robin-primary-dark);
    color: #fff;
    transform: translateY(-1px);
}

.mobile-toggle {
    display: none;
    border: 1px solid var(--robin-border);
    background: #fff;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    font-size: 1.25rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 2rem;
    align-items: center;
}

.hero-photo-wrap {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.hero-photo {
    width: min(100%, 460px);
    object-fit: contain;
    object-position: bottom center;
}

.hero-kicker {
    color: var(--robin-muted);
    font-size: .95rem;
    margin-bottom: .5rem;
}

.hero-grid h1 {
    margin: 0 0 1rem;
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.05;
    letter-spacing: -.03em;
    font-weight: 800;
}

.hero-grid p {
    color: var(--robin-muted);
    max-width: 520px;
    margin: 0 0 1.75rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 2rem;
    align-items: start;
}

.about-grid h3 {
    margin: 0 0 1rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.about-grid p {
    color: var(--robin-muted);
    margin: 0 0 1.5rem;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: .85rem;
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: #eef2ff;
    color: var(--robin-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-item strong {
    display: block;
    font-size: 1.35rem;
    line-height: 1.1;
}

.stat-item span {
    color: var(--robin-muted);
    font-size: .85rem;
}

.tools-card {
    background: #fff;
    border: 1px solid var(--robin-border);
    border-radius: 18px;
    padding: 1.75rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .06);
}

.tools-card h4 {
    margin: 0 0 1.25rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.skill-row + .skill-row { margin-top: 1rem; }

.skill-row .label {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    font-size: .88rem;
    font-weight: 600;
    margin-bottom: .45rem;
}

.skill-row .bar {
    height: 8px;
    background: #eef2ff;
    border-radius: 999px;
    overflow: hidden;
}

.skill-row .bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--robin-primary), #93a9ff);
    border-radius: 999px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: #fff;
    border: 1px solid var(--robin-border);
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform .25s, box-shadow .25s;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(15, 23, 42, .08);
}

.service-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1.25rem;
    border-radius: 16px;
    background: var(--robin-soft);
    color: var(--robin-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.service-card h3 {
    margin: 0 0 .75rem;
    font-size: 1.05rem;
}

.service-card p {
    margin: 0;
    color: var(--robin-muted);
    font-size: .9rem;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 2rem;
}

.filter-btn {
    border: none;
    background: transparent;
    color: var(--robin-muted);
    font-weight: 600;
    font-size: .88rem;
    padding: .45rem .9rem;
    border-radius: 999px;
    cursor: pointer;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--robin-primary);
    color: #fff;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.portfolio-item {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: #e5e7eb;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s;
}

.portfolio-item:hover img { transform: scale(1.05); }

.portfolio-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1rem 1.1rem;
    background: linear-gradient(transparent, rgba(15, 23, 42, .82));
    color: #fff;
}

.portfolio-overlay h4 {
    margin: 0 0 .15rem;
    font-size: .95rem;
}

.portfolio-overlay span {
    font-size: .78rem;
    opacity: .85;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.testimonial-card {
    background: #fff;
    border: 1px solid var(--robin-border);
    border-radius: 16px;
    padding: 1.75rem;
    box-shadow: 0 8px 24px rgba(15, 23, 42, .05);
}

.testimonial-card p {
    color: var(--robin-muted);
    font-size: .92rem;
    margin: 0 0 1.25rem;
}

.testimonial-card strong {
    display: block;
    font-size: .92rem;
}

.testimonial-stars {
    color: #fbbf24;
    font-size: .85rem;
    letter-spacing: 2px;
    margin-top: .35rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.blog-card {
    background: #fff;
    border: 1px solid var(--robin-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(15, 23, 42, .05);
}

.blog-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.blog-body {
    padding: 1.25rem;
}

.blog-meta {
    color: var(--robin-primary);
    font-size: .78rem;
    font-weight: 600;
    margin-bottom: .5rem;
}

.blog-body h3 {
    margin: 0 0 .65rem;
    font-size: 1rem;
    line-height: 1.45;
}

.blog-body p {
    margin: 0;
    color: var(--robin-muted);
    font-size: .88rem;
}

.site-footer {
    background: var(--robin-dark);
    color: #94a3b8;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 2rem;
}

.site-footer h4 {
    color: #fff;
    margin: 0 0 1rem;
    font-size: 1rem;
}

.site-footer p {
    margin: 0;
    font-size: .9rem;
    line-height: 1.7;
}

.newsletter-form {
    display: flex;
    gap: .5rem;
    margin-top: .75rem;
}

.newsletter-form input {
    flex: 1;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.06);
    color: #fff;
    border-radius: 999px;
    padding: .75rem 1rem;
}

.newsletter-form button {
    border: none;
    background: var(--robin-primary);
    color: #fff;
    border-radius: 999px;
    padding: .75rem 1.1rem;
    font-weight: 600;
    white-space: nowrap;
}

.footer-social {
    display: flex;
    gap: .65rem;
    margin-top: .75rem;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: rgba(255,255,255,.06);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.footer-bottom {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,.08);
    text-align: center;
    font-size: .85rem;
}

@media (max-width: 991px) {
    .main-nav { display: none; }
    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 1rem;
        right: 1rem;
        background: #fff;
        border: 1px solid var(--robin-border);
        border-radius: 14px;
        padding: 1rem;
        box-shadow: 0 16px 40px rgba(15, 23, 42, .12);
    }
    .mobile-toggle { display: inline-flex; align-items: center; justify-content: center; }
    .hero-grid,
    .about-grid,
    .services-grid,
    .portfolio-grid,
    .testimonials-grid,
    .blog-grid,
    .footer-grid { grid-template-columns: 1fr; }
    .stats-row { grid-template-columns: 1fr; }
    .hero-photo-wrap { min-height: 320px; order: -1; }
}