@import url('https://rsms.me/inter/inter.css');

:root {
    /* Dark surfaces (Linear-inspired) */
    --color-bg: #08090a;
    --color-bg-alt: #0d0e10;
    --color-surface: #111214;
    --color-surface-2: #16171a;
    --color-elevated: #1a1b1f;

    /* Hairline borders */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(255, 255, 255, 0.14);

    /* Text */
    --color-text: #e6e7ea;
    --color-text-strong: #f7f8f8;
    --color-text-muted: #8a8f98;
    --color-text-dim: #62666d;

    /* Brand */
    --color-accent: #c4f152;
    --color-accent-hover: #d6ff6c;
    --color-accent-dim: rgba(196, 241, 82, 0.14);
    --color-brand-orange: #ff7a1a;
    --color-brand-orange-dim: rgba(255, 122, 26, 0.16);

    --color-success: #5fb37c;
    --color-error: #e5484d;

    /* Layout */
    --max-width: 1200px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-pill: 999px;

    /* Shadows / glows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
    --glow-accent: 0 0 0 1px rgba(196, 241, 82, 0.18), 0 8px 32px rgba(196, 241, 82, 0.08);

    --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
    --header-h: 64px;
}

* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    background: var(--color-bg);
    color-scheme: dark;
}

body {
    margin: 0;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-feature-settings: "cv11", "ss01", "ss03";
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.011em;
    overflow-x: hidden;
}

@supports (font-variation-settings: normal) {
    body { font-family: "Inter var", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
}

body.no-scroll { overflow: hidden; }

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--color-accent-hover); }

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

::selection { background: var(--color-accent); color: #08090a; }

h1, h2, h3, h4 {
    color: var(--color-text-strong);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.035em;
    margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.4rem, 5.4vw, 4.2rem); letter-spacing: -0.04em; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); letter-spacing: -0.035em; }
h3 { font-size: 1.15rem; letter-spacing: -0.02em; font-weight: 600; }
h4 { font-size: 0.92rem; letter-spacing: -0.01em; font-weight: 600; }

p { margin: 0 0 1em; }

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--color-surface);
    color: #fff;
    padding: 10px 16px;
    z-index: 1000;
    border-radius: 8px;
}
.skip-link:focus { left: 12px; top: 12px; color: #fff; }

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: rgba(8, 9, 10, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid transparent;
    z-index: 100;
    transition: background var(--transition), border-color var(--transition);
}

.site-header.scrolled {
    background: rgba(8, 9, 10, 0.85);
    border-bottom-color: var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-strong);
}

/* Logo: stacked white text + recolored mark overlay (mark PNG repainted via CSS mask) */
.logo-header,
.logo-footer {
    position: relative;
    display: inline-block;
    line-height: 0;
}
.logo-header img { display: block; height: 32px; width: auto; }
.logo-footer img { display: block; height: 40px; width: auto; }

.logo-header .logo-text,
.logo-footer .logo-text {
    filter: brightness(0) invert(1);
}

/* Hide original orange pixels — the mark is repainted via ::after below */
.logo-header .logo-accent,
.logo-footer .logo-accent {
    position: absolute;
    inset: 0;
    visibility: hidden;
}

.logo-header::after,
.logo-footer::after {
    content: "";
    position: absolute;
    inset: 0;
    background: #000000;
    -webkit-mask: url('../images/logific-logo-mark.png') center / contain no-repeat;
    mask: url('../images/logific-logo-mark.png') center / contain no-repeat;
    pointer-events: none;
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-desktop a {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: -0.01em;
    padding: 8px 14px;
    border-radius: 8px;
    transition: color var(--transition), background var(--transition);
}

.nav-desktop a:hover { color: var(--color-text-strong); }
.nav-desktop a.active { color: var(--color-text-strong); }

.nav-desktop a.btn { margin-left: 8px; }

.nav-toggle {
    display: none;
    background: transparent;
    border: 0;
    width: 40px;
    height: 40px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: background var(--transition);
}
.nav-toggle:hover { background: var(--color-surface); }

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-text-strong);
    margin: 5px auto;
    transition: transform var(--transition), opacity var(--transition);
    border-radius: 2px;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Mobile Slide-in Menu ---------- */
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100vh;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 80px 28px 28px;
    transform: translateX(100%);
    transition: transform 320ms cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }

.mobile-nav a {
    display: block;
    color: var(--color-text);
    font-size: 1rem;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
    font-weight: 500;
    letter-spacing: -0.01em;
}
.mobile-nav a:hover, .mobile-nav a.active { color: var(--color-accent); }

.mobile-nav .close-menu {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: 0;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background var(--transition), color var(--transition);
}
.mobile-nav .close-menu:hover { background: var(--color-surface-2); color: var(--color-text-strong); }

.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    z-index: 98;
    backdrop-filter: blur(4px);
}
.nav-overlay.open { opacity: 1; visibility: visible; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: -0.01em;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
    line-height: 1;
}

.btn-primary {
    background: var(--color-accent);
    color: #08090a;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 1px 2px rgba(0, 0, 0, 0.3);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
    color: #08090a;
    transform: translateY(-1px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 8px 24px rgba(196, 241, 82, 0.25);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text-strong);
    border-color: var(--color-border-strong);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.btn-secondary:hover {
    background: var(--color-surface-2);
    border-color: rgba(255, 255, 255, 0.22);
    color: var(--color-text-strong);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-accent);
    padding: 8px 0;
    border-radius: 0;
}
.btn-ghost::after {
    content: "→";
    transition: transform var(--transition);
    margin-left: 4px;
}
.btn-ghost:hover { color: var(--color-accent-hover); }
.btn-ghost:hover::after { transform: translateX(4px); }

/* ---------- Sections ---------- */
.section {
    padding: 120px 0;
    position: relative;
}
.section-alt {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0;
    text-transform: none;
    margin-bottom: 16px;
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-accent-dim);
}

.section-lead {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 640px;
    margin-bottom: 56px;
    letter-spacing: -0.011em;
    line-height: 1.55;
}

/* ---------- Hero ---------- */
.hero {
    padding: calc(var(--header-h) + 120px) 0 120px;
    position: relative;
    background: var(--color-bg);
    overflow: hidden;
}

/* Aurora glow + dot grid */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 0%, rgba(196, 241, 82, 0.10), transparent 60%),
        radial-gradient(ellipse 55% 45% at 80% 20%, rgba(255, 122, 26, 0.10), transparent 60%),
        radial-gradient(ellipse 70% 40% at 50% 100%, rgba(196, 241, 82, 0.06), transparent 65%);
    pointer-events: none;
    z-index: 0;
}
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.04) 1px, transparent 0);
    background-size: 24px 24px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
    pointer-events: none;
    z-index: 0;
}

.hero .container { position: relative; z-index: 1; }

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 72px;
    align-items: center;
}

.hero h1 {
    margin-bottom: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #b9bcc1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero p.lead {
    font-size: 1.18rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    max-width: 540px;
    letter-spacing: -0.011em;
    line-height: 1.55;
}

.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    height: 420px;
}

.hero-card {
    position: absolute;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 18px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 240px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.hero-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-accent-hover) 0%, var(--color-accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #08090a;
    font-size: 1.05rem;
    flex-shrink: 0;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 4px 16px rgba(196, 241, 82, 0.2);
}

.hero-card-title { font-weight: 600; color: var(--color-text-strong); font-size: 0.92rem; letter-spacing: -0.012em; }
.hero-card-sub { color: var(--color-text-muted); font-size: 0.82rem; letter-spacing: -0.005em; }

.hero-card-1 { top: 0; left: 0; animation: float 6s ease-in-out infinite; }
.hero-card-2 { top: 24%; right: 0; animation: float 6s ease-in-out infinite 1.5s; }
.hero-card-3 { top: 50%; left: 8%; animation: float 6s ease-in-out infinite 3s; }
.hero-card-4 { bottom: 0; right: 4%; animation: float 6s ease-in-out infinite 4.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ---------- Services Grid ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(196, 241, 82, 0.06), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.service-card:hover {
    border-color: var(--color-border-strong);
    background: var(--color-surface-2);
    transform: translateY(-2px);
}
.service-card:hover::before { opacity: 1; }

.service-card > * { position: relative; }

.service-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--color-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 20px;
    transition: all var(--transition);
}
.service-card:hover .service-icon {
    border-color: rgba(196, 241, 82, 0.4);
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

.service-card h3 { margin-bottom: 10px; color: var(--color-text-strong); }
.service-card p { color: var(--color-text-muted); margin-bottom: 16px; font-size: 0.95rem; line-height: 1.55; }

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 16px;
}

.tag {
    background: var(--color-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: -0.005em;
}

/* ---------- Project Highlight ---------- */
.project-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.project-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background:
        radial-gradient(ellipse 80% 60% at 30% 30%, rgba(255, 122, 26, 0.22), transparent 60%),
        radial-gradient(ellipse 80% 60% at 70% 70%, rgba(196, 241, 82, 0.18), transparent 60%),
        linear-gradient(135deg, #1a1b1f, #0d0e10);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: transform var(--transition);
    box-shadow: var(--shadow-lg);
}
.project-image:hover { transform: scale(1.01); }

.project-image-content {
    color: var(--color-text-strong);
    text-align: center;
    padding: 30px;
    position: relative;
    z-index: 1;
}

.project-image-tag {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--color-border);
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 14px;
    backdrop-filter: blur(8px);
    color: var(--color-text-strong);
    letter-spacing: -0.005em;
}

.project-image-title {
    font-size: 1.7rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.03em;
}

.project-features {
    list-style: none;
    padding: 0;
    margin: 24px 0;
}

.project-features li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    color: var(--color-text);
    font-size: 0.95rem;
}

.project-features li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 16px;
    height: 16px;
    background: var(--color-accent-dim);
    border: 1px solid rgba(196, 241, 82, 0.4);
    border-radius: 50%;
}
.project-features li::after {
    content: "";
    position: absolute;
    left: 5px;
    top: 19px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ---------- Clients Strip ---------- */
.clients-strip {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.client-logo {
    text-align: center;
    color: var(--color-text-dim);
    font-weight: 500;
    font-size: 1rem;
    padding: 12px;
    transition: color var(--transition), transform var(--transition);
    cursor: default;
    letter-spacing: -0.012em;
}
.client-logo:hover { color: var(--color-text-strong); transform: translateY(-1px); }

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 64px;
    align-items: start;
}

.contact-info p { color: var(--color-text-muted); margin-bottom: 28px; }

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}
.contact-detail:last-child { border-bottom: 0; }

.contact-detail-icon {
    width: 40px;
    height: 40px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-detail-label { font-size: 0.78rem; color: var(--color-text-muted); letter-spacing: -0.005em; }
.contact-detail-value { color: var(--color-text-strong); font-weight: 500; letter-spacing: -0.011em; }
.contact-detail-value a { color: inherit; }
.contact-detail-value a:hover { color: var(--color-accent); }

.contact-form {
    background: var(--color-surface);
    padding: 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
    letter-spacing: -0.005em;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.92rem;
    font-family: inherit;
    color: var(--color-text-strong);
    background: var(--color-bg-alt);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    letter-spacing: -0.005em;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-dim); }

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: 0;
    border-color: rgba(196, 241, 82, 0.6);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(196, 241, 82, 0.12);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-group .field-error {
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: 6px;
    display: none;
}
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select { border-color: var(--color-error); }
.form-group.has-error .field-error { display: block; }

.form-status {
    padding: 14px 16px;
    border-radius: 8px;
    margin-top: 18px;
    font-weight: 500;
    font-size: 0.92rem;
    display: none;
    border: 1px solid transparent;
}
.form-status.success { display: block; background: rgba(95, 179, 124, 0.1); color: var(--color-success); border-color: rgba(95, 179, 124, 0.3); }
.form-status.error { display: block; background: rgba(229, 72, 77, 0.1); color: var(--color-error); border-color: rgba(229, 72, 77, 0.3); }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--color-bg);
    color: var(--color-text-muted);
    padding: 80px 0 28px;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.3fr;
    gap: 56px;
    margin-bottom: 56px;
}

.site-footer h4 {
    color: var(--color-text-strong);
    font-size: 0.82rem;
    margin-bottom: 16px;
    letter-spacing: -0.005em;
    text-transform: none;
    font-weight: 600;
}

.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 10px; font-size: 0.9rem; }
.site-footer a { color: var(--color-text-muted); font-size: 0.9rem; letter-spacing: -0.005em; }
.site-footer a:hover { color: var(--color-text-strong); }

.footer-brand p { color: var(--color-text-muted); max-width: 320px; font-size: 0.92rem; margin-top: 14px; }

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--color-text-dim);
}

.social-links { display: flex; gap: 8px; }
.social-links a {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: all var(--transition);
}
.social-links a:hover {
    background: var(--color-accent);
    color: #08090a;
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

/* ---------- Back to top ---------- */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    color: var(--color-text-strong);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    z-index: 90;
    backdrop-filter: blur(8px);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-accent); color: #08090a; border-color: var(--color-accent); transform: translateY(-2px); }

/* ---------- Page banner (sub pages) ---------- */
.page-banner {
    padding: calc(var(--header-h) + 96px) 0 80px;
    background: var(--color-bg);
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}
.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 80% at 50% 0%, rgba(196, 241, 82, 0.10), transparent 60%),
        radial-gradient(ellipse 50% 70% at 50% 100%, rgba(255, 122, 26, 0.08), transparent 60%);
    pointer-events: none;
}
.page-banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.04) 1px, transparent 0);
    background-size: 24px 24px;
    mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 20%, transparent 75%);
    pointer-events: none;
}
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 {
    color: transparent;
    background: linear-gradient(180deg, #ffffff 0%, #b9bcc1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 14px;
}
.page-banner p { color: var(--color-text-muted); max-width: 640px; margin: 0 auto; font-size: 1.08rem; letter-spacing: -0.011em; }

.breadcrumbs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
    font-size: 0.85rem;
    color: var(--color-text-dim);
}
.breadcrumbs a { color: var(--color-text-muted); }
.breadcrumbs a:hover { color: var(--color-text-strong); }

/* ---------- Accordion (services page) ---------- */
.accordion { max-width: 820px; margin: 0 auto; }

.accordion-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    background: var(--color-surface);
    overflow: hidden;
    transition: border-color var(--transition);
}
.accordion-item:hover { border-color: var(--color-border-strong); }
.accordion-item.open { border-color: var(--color-border-strong); }

.accordion-trigger {
    width: 100%;
    background: transparent;
    border: 0;
    padding: 18px 22px;
    text-align: left;
    font-size: 0.98rem;
    font-weight: 500;
    color: var(--color-text-strong);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: background var(--transition);
    letter-spacing: -0.012em;
}
.accordion-trigger:hover { background: var(--color-surface-2); }

.accordion-trigger .chevron {
    width: 20px;
    height: 20px;
    transition: transform var(--transition);
    flex-shrink: 0;
    color: var(--color-text-muted);
}
.accordion-item.open .accordion-trigger .chevron { transform: rotate(180deg); color: var(--color-accent); }

.accordion-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 320ms ease;
}
.accordion-panel-inner {
    padding: 0 22px 22px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ---------- Tabs (services page) ---------- */
.tabs { max-width: 920px; margin: 0 auto; }

.tab-list {
    display: flex;
    gap: 4px;
    padding: 4px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-pill);
    margin-bottom: 36px;
    flex-wrap: wrap;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.tab-trigger {
    background: transparent;
    border: 0;
    padding: 8px 18px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-pill);
    transition: all var(--transition);
    font-family: inherit;
    letter-spacing: -0.005em;
}
.tab-trigger:hover { color: var(--color-text-strong); }
.tab-trigger.active {
    color: #08090a;
    background: var(--color-accent);
}

.tab-panel { display: none; animation: fadeIn 320ms ease; }
.tab-panel.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Stats ---------- */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat {
    text-align: center;
    padding: 28px 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.stat-number {
    font-size: 2.6rem;
    font-weight: 600;
    color: var(--color-text-strong);
    line-height: 1;
    margin-bottom: 8px;
    font-feature-settings: "tnum";
    letter-spacing: -0.04em;
    background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label { color: var(--color-text-muted); font-weight: 500; font-size: 0.88rem; letter-spacing: -0.005em; }

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    top: 84px;
    right: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    color: var(--color-text-strong);
    padding: 12px 20px;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    transform: translateX(120%);
    transition: transform 320ms cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    max-width: 360px;
    font-size: 0.9rem;
    backdrop-filter: blur(8px);
}
.toast.show { transform: translateX(0); }
.toast.success { border-color: rgba(95, 179, 124, 0.4); }
.toast.error { border-color: rgba(229, 72, 77, 0.4); }

/* ---------- Reveal-on-scroll ---------- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
    .section { padding: 80px 0; }
    .hero { padding: calc(var(--header-h) + 80px) 0 80px; }
    .hero-grid,
    .project-highlight,
    .contact-grid { grid-template-columns: 1fr; gap: 48px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .clients-strip { grid-template-columns: repeat(3, 1fr); }
    .hero-visual {
        height: auto;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .hero-card {
        position: static;
        min-width: 0;
        animation: none;
    }
}

@media (max-width: 680px) {
    .nav-desktop { display: none; }
    .nav-toggle { display: block; }
    .services-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .clients-strip { grid-template-columns: repeat(2, 1fr); }
    .contact-form { padding: 24px 20px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .hero { padding-top: calc(var(--header-h) + 56px); }
    .section { padding: 64px 0; }
    .hero-visual { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}