/* =========================================================
   M-FLOW — design tokens + base
   ========================================================= */
:root {
    /* palette (default: stone-noir) */
    --bg: #0a0a0a;
    --bg-2: #111111;
    --bg-3: #1a1a1a;
    --line: rgba(245, 241, 234, 0.08);
    --line-strong: rgba(245, 241, 234, 0.18);
    --text: #f5f1ea;
    --text-mute: #8a8580;
    --text-dim: #56524c;
    --accent: #c9a96e;
    --accent-soft: rgba(201, 169, 110, 0.14);

    /* type */
    --font-sans: "Geist", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: "Geist Mono", ui-monospace, "SF Mono", monospace;
    --font-serif: "Instrument Serif", "Times New Roman", serif;

    /* density */
    --section-y: clamp(96px, 12vw, 180px);
    --container: 1280px;
    --gutter: clamp(20px, 4vw, 56px);

    /* motion */
    --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

[data-density="compact"] {
    --section-y: clamp(64px, 8vw, 120px);
}
[data-density="spacious"] {
    --section-y: clamp(120px, 16vw, 240px);
}

/* palettes ------------------------------------------------- */
[data-palette="noir"] {
    --bg: #0a0a0a;
    --bg-2: #111111;
    --bg-3: #1a1a1a;
    --text: #f5f1ea;
    --text-mute: #8a8580;
    --text-dim: #56524c;
    --accent: #c9a96e;
    --accent-soft: rgba(201, 169, 110, 0.14);
    --line: rgba(245, 241, 234, 0.08);
    --line-strong: rgba(245, 241, 234, 0.18);
}
[data-palette="graphite"] {
    --bg: #0e1012;
    --bg-2: #15181b;
    --bg-3: #1c2025;
    --text: #e9ecef;
    --text-mute: #7a8189;
    --text-dim: #4a5158;
    --accent: #9bb0a1;
    --accent-soft: rgba(155, 176, 161, 0.14);
    --line: rgba(233, 236, 239, 0.08);
    --line-strong: rgba(233, 236, 239, 0.18);
}
[data-palette="parchment"] {
    --bg: #f5f1ea;
    --bg-2: #ece7dd;
    --bg-3: #e3ddd1;
    --text: #1a1816;
    --text-mute: #6a655d;
    --text-dim: #98928a;
    --accent: #3a3530;
    --accent-soft: rgba(58, 53, 48, 0.08);
    --line: rgba(26, 24, 22, 0.08);
    --line-strong: rgba(26, 24, 22, 0.18);
}
[data-palette="ink"] {
    --bg: #050505;
    --bg-2: #0c0c0c;
    --bg-3: #141414;
    --text: #ffffff;
    --text-mute: #707070;
    --text-dim: #3f3f3f;
    --accent: #ff5b2c;
    --accent-soft: rgba(255, 91, 44, 0.12);
    --line: rgba(255, 255, 255, 0.06);
    --line-strong: rgba(255, 255, 255, 0.16);
}

/* reset ---------------------------------------------------- */
* {
    box-sizing: border-box;
}
html, body {
    margin: 0;
    padding: 0;
}
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    font-feature-settings: "ss01", "cv11";
}
img {
    max-width: 100%;
    display: block;
}
button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 0;
}
a {
    color: inherit;
    text-decoration: none;
}
input, textarea {
    font: inherit;
    color: inherit;
}

/* utility -------------------------------------------------- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: var(--gutter);
    padding-right: var(--gutter);
}
.section {
    padding-top: var(--section-y);
    padding-bottom: var(--section-y);
    position: relative;
}
.mono {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-mute);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.eyebrow::before {
    content: "";
    width: 8px;
    height: 8px;
    border: 1px solid currentColor;
    display: inline-block;
}
.serif {
    font-family: var(--font-serif);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.02em;
}

/* hairline grid (decorative) ------------------------------ */
.grid-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(to right, var(--line) 1px, transparent 1px);
    background-size: calc(100% / 12) 100%;
    mask-image: linear-gradient(to bottom, transparent 0, #000 8%, #000 92%, transparent 100%);
    opacity: 0.55;
}

/* header --------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 18px 0;
    transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
    border-bottom: 1px solid transparent;
}
.site-header[data-scrolled="true"] {
    background: color-mix(in srgb, var(--bg) 80%, transparent);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom-color: var(--line);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand-mark {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: -0.02em;
    font-size: 17px;
}
.brand-mark .mark-dot {
    width: 7px;
    height: 7px;
    background: var(--accent);
    display: inline-block;
    border-radius: 2px;
    transform: translateY(-2px);
}
.brand-mark .brand-suffix {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 11px;
    color: var(--text-mute);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-left: 4px;
}

.nav {
    display: flex;
    gap: 4px;
    align-items: center;
}
.nav a {
    padding: 8px 14px;
    font-size: 13px;
    color: var(--text-mute);
    letter-spacing: -0.005em;
    border-radius: 999px;
    transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav a:hover {
    color: var(--text);
    background: var(--bg-3);
}

/* buttons -------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.005em;
    border-radius: 999px;
    transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
    border: 1px solid transparent;
    white-space: nowrap;
    line-height: 1;
}
.btn-primary {
    background: var(--text);
    color: var(--bg);
}
.btn-primary:hover {
    background: var(--accent);
    color: var(--bg);
}
.btn-ghost {
    border-color: var(--line-strong);
    color: var(--text);
}
.btn-ghost:hover {
    border-color: var(--text);
    background: var(--bg-3);
}
.btn .icn {
    transition: transform 0.2s var(--ease);
}
.btn:hover .icn {
    transform: translateX(3px);
}
.btn-lg {
    padding: 16px 24px;
    font-size: 14px;
}

/* status pill --------------------------------------------- */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 13px 7px 11px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-mute);
    background: color-mix(in srgb, var(--bg-2) 80%, transparent);
    backdrop-filter: blur(8px);
}
.status-pill .pulse {
    position: relative;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #6ad27e;
    display: inline-block;
}
.status-pill .pulse::after {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: #6ad27e;
    opacity: 0.35;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.6); opacity: 0.6; }
    100% { transform: scale(2); opacity: 0; }
}

/* hero ----------------------------------------------------- */
.hero {
    position: relative;
    padding-top: clamp(140px, 18vw, 220px);
    padding-bottom: var(--section-y);
    overflow: hidden;
}
.hero-eyebrow-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: clamp(48px, 8vw, 96px);
    gap: 16px;
    flex-wrap: wrap;
}
.hero-headline {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(40px, 7vw, 96px);
    line-height: 0.98;
    letter-spacing: -0.035em;
    margin: 0;
    text-wrap: balance;
    max-width: 14ch;
}
.hero-headline .serif {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    letter-spacing: -0.02em;
    color: var(--text);
}
.hero-headline em {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    color: var(--accent);
}
.hero-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(24px, 4vw, 64px);
    margin-top: clamp(48px, 6vw, 80px);
    padding-top: 32px;
    border-top: 1px solid var(--line);
}
.hero-lede {
    max-width: 42ch;
    font-size: clamp(16px, 1.2vw, 19px);
    line-height: 1.5;
    color: var(--text-mute);
}
.hero-lede strong {
    color: var(--text);
    font-weight: 500;
}
.hero-cta-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
}

/* hero variant: split with stone */
.hero[data-variant="split"] .hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: end;
}
.hero[data-variant="split"] .hero-stone {
    aspect-ratio: 3 / 4;
    background: url("../assets/stone-hero.png") center/cover;
    border: 1px solid var(--line);
    position: relative;
}
.hero[data-variant="split"] .hero-stone::after {
    content: "FEITO DE FUTURO";
    position: absolute;
    bottom: 24px;
    left: 24px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(245, 241, 234, 0.9);
}
.hero[data-variant="centered"] .hero-grid {
    text-align: center;
}
.hero[data-variant="centered"] .hero-headline {
    margin: 0 auto;
    max-width: 18ch;
}
.hero[data-variant="centered"] .hero-meta {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
}
.hero[data-variant="centered"] .hero-lede {
    margin: 0 auto;
    max-width: 56ch;
}

/* hero atmosphere */
.hero-atmosphere {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.hero-atmosphere::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(800px 500px at 80% 10%, var(--accent-soft), transparent 60%),
        radial-gradient(600px 400px at 10% 60%, color-mix(in srgb, var(--text) 4%, transparent), transparent 70%);
}
.hero-marquee {
    position: absolute;
    bottom: 32px;
    left: 0;
    right: 0;
    overflow: hidden;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 16px 0;
    pointer-events: none;
}
.hero-marquee-track {
    display: flex;
    gap: 56px;
    animation: marquee 50s linear infinite;
    white-space: nowrap;
    width: max-content;
}
.hero-marquee span {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-dim);
    display: inline-flex;
    align-items: center;
    gap: 56px;
}
.hero-marquee span::after {
    content: "✦";
    color: var(--accent);
    font-size: 8px;
}
@keyframes marquee {
    to { transform: translateX(-50%); }
}

/* section header ------------------------------------------ */
.section-head {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: clamp(24px, 6vw, 96px);
    align-items: end;
    margin-bottom: clamp(48px, 6vw, 96px);
}
.section-head h2 {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(32px, 4.5vw, 60px);
    line-height: 1;
    letter-spacing: -0.03em;
    margin: 0;
    text-wrap: balance;
}
.section-head h2 .serif {
    font-family: var(--font-serif);
    font-style: italic;
}
.section-head .section-aside {
    color: var(--text-mute);
    font-size: 15px;
    line-height: 1.55;
    max-width: 50ch;
}
.section-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.08em;
}

/* manifesto ------------------------------------------------ */
.manifesto {
    position: relative;
    padding: clamp(120px, 18vw, 240px) 0;
    overflow: hidden;
    isolation: isolate;
}
.manifesto-bg {
    position: absolute;
    inset: 0;
    background: url("../assets/stone-hero.png") center/cover no-repeat;
    z-index: -2;
    filter: contrast(1.05);
    opacity: var(--manifesto-stone-opacity, 1);
    transition: opacity 0.4s var(--ease);
}
.manifesto-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, var(--bg) 0%, transparent 18%, transparent 82%, var(--bg) 100%),
        radial-gradient(circle at 30% 50%, transparent 0%, rgba(0,0,0,0.55) 80%);
    z-index: 1;
}
.manifesto-content {
    position: relative;
    z-index: 2;
}
.manifesto-headline {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
    font-size: clamp(56px, 12vw, 180px);
    line-height: 0.92;
    letter-spacing: -0.03em;
    color: #f5f1ea;
    margin: 0 0 56px;
    text-wrap: balance;
}
.manifesto-headline em {
    color: var(--accent);
}
.manifesto-body {
    max-width: 56ch;
    font-size: clamp(16px, 1.2vw, 19px);
    line-height: 1.55;
    color: rgba(245, 241, 234, 0.78);
}
.manifesto-signature {
    margin-top: 64px;
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
    align-items: baseline;
}
.manifesto-signature .item {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(245, 241, 234, 0.7);
}
.manifesto-signature .item strong {
    display: block;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 22px;
    letter-spacing: -0.02em;
    text-transform: none;
    color: #f5f1ea;
    margin-bottom: 6px;
}

/* services ------------------------------------------------- */
.services {
    background: var(--bg);
}
.services-stack {
    border-top: 1px solid var(--line);
}
.service {
    border-bottom: 1px solid var(--line);
    padding: clamp(32px, 4vw, 56px) 0;
    display: grid;
    grid-template-columns: 80px 1.1fr 1.4fr;
    gap: clamp(20px, 3vw, 48px);
    align-items: start;
    cursor: pointer;
    transition: background 0.4s var(--ease), padding 0.4s var(--ease);
    position: relative;
}
.service:hover {
    background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 4%, transparent), transparent 70%);
}
.service-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 0.06em;
    padding-top: 8px;
}
.service-title {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(26px, 3vw, 40px);
    line-height: 1.05;
    letter-spacing: -0.025em;
    margin: 0;
}
.service-title .serif {
    font-family: var(--font-serif);
    font-style: italic;
}
.service-body {
    color: var(--text-mute);
    font-size: 15px;
    line-height: 1.55;
    max-width: 52ch;
}
.service-toggle {
    position: absolute;
    right: 0;
    top: clamp(32px, 4vw, 56px);
    width: 32px;
    height: 32px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-mute);
    transition: transform 0.4s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.service[data-open="true"] .service-toggle {
    transform: rotate(45deg);
    background: var(--text);
    color: var(--bg);
    border-color: var(--text);
}
.service-detail {
    grid-column: 2 / -1;
    display: grid;
    overflow: hidden;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.5s var(--ease);
}
.service[data-open="true"] .service-detail {
    grid-template-rows: 1fr;
    margin-top: 32px;
}
.service-detail > div {
    min-height: 0;
    overflow: hidden;
}
.service-detail-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding-bottom: 12px;
}
.service-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}
.service-list li {
    display: grid;
    grid-template-columns: 16px 1fr;
    gap: 12px;
    align-items: baseline;
    font-size: 14px;
    line-height: 1.45;
    color: var(--text);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}
.service-list li::before {
    content: "→";
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 12px;
}
.service-detail-aside h4 {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin: 0 0 12px;
    font-weight: 400;
}
.service-detail-aside p {
    color: var(--text-mute);
    font-size: 14px;
    line-height: 1.55;
    margin: 0 0 16px;
}
.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}
.service-tags span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-mute);
    padding: 5px 9px;
    border: 1px solid var(--line);
    border-radius: 999px;
}

/* differentials ------------------------------------------- */
.differentials {
    background: var(--bg);
}
.diff-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}
.diff-cell {
    padding: clamp(28px, 3vw, 40px);
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
    transition: background 0.3s var(--ease);
    position: relative;
}
.diff-cell:hover {
    background: var(--bg-2);
}
.diff-cell:hover .diff-icon {
    color: var(--accent);
    transform: scale(1.06);
}
.diff-icon {
    width: 36px;
    height: 36px;
    color: var(--text-mute);
    transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}
.diff-icon svg {
    width: 100%;
    height: 100%;
}
.diff-title {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 20px;
    letter-spacing: -0.015em;
    margin: 0 0 8px;
    line-height: 1.15;
}
.diff-title .serif {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 400;
}
.diff-body {
    color: var(--text-mute);
    font-size: 14px;
    line-height: 1.5;
    margin: 0;
}
.diff-cell .diff-num {
    position: absolute;
    top: clamp(28px, 3vw, 40px);
    right: clamp(28px, 3vw, 40px);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 0.06em;
}

/* stack ---------------------------------------------------- */
.stack {
    background: var(--bg-2);
}
.stack-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
}
.stack-tile {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    aspect-ratio: 3/2;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-mute);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: background 0.25s var(--ease), color 0.25s var(--ease);
    text-align: center;
    padding: 12px;
    line-height: 1.2;
}
.stack-tile:hover {
    background: var(--bg-3);
    color: var(--text);
}
.stack-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(32px, 4vw, 64px);
    margin-bottom: 64px;
}
.stack-cat-num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}
.stack-cat-title {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 17px;
    margin: 0 0 12px;
    letter-spacing: -0.005em;
}
.stack-cat-body {
    color: var(--text-mute);
    font-size: 13px;
    line-height: 1.55;
    margin: 0;
}

/* contact -------------------------------------------------- */
.contact {
    position: relative;
    padding: clamp(120px, 16vw, 200px) 0 var(--section-y);
    overflow: hidden;
    isolation: isolate;
}
.contact-bg {
    position: absolute;
    inset: 0;
    background: url("../assets/stone-hero.png") center/cover no-repeat;
    opacity: var(--contact-stone-opacity, 0.32);
    z-index: -2;
    filter: contrast(1.15);
    transition: opacity 0.4s var(--ease);
}
.contact-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--bg) 0%, transparent 18%, var(--bg) 100%);
}
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: clamp(40px, 6vw, 96px);
    align-items: start;
}
.contact-heading {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: clamp(40px, 5.5vw, 76px);
    line-height: 0.98;
    letter-spacing: -0.03em;
    margin: 0 0 40px;
    text-wrap: balance;
}
.contact-heading .serif {
    font-family: var(--font-serif);
    font-style: italic;
}
.contact-aside {
    color: var(--text-mute);
    font-size: 15px;
    line-height: 1.6;
    margin: 0 0 40px;
    max-width: 38ch;
}
.contact-channels {
    display: grid;
    gap: 14px;
}
.contact-channel {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
    color: var(--text);
    font-size: 14px;
}
.contact-channel:hover {
    border-color: var(--line-strong);
    background: var(--bg-2);
}
.contact-channel .label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-mute);
    display: block;
    margin-bottom: 3px;
}
.contact-channel .val {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.005em;
}
.contact-channel .icn-wrap {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}

/* form ----------------------------------------------------- */
.contact-form {
    background: color-mix(in srgb, var(--bg-2) 90%, transparent);
    backdrop-filter: blur(12px);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: clamp(28px, 3vw, 40px);
    display: grid;
    gap: 18px;
}
.form-field {
    display: grid;
    gap: 8px;
}
.form-field label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-mute);
    display: flex;
    justify-content: space-between;
}
.form-field label .req {
    color: var(--accent);
}
.form-field input,
.form-field textarea,
.form-field select {
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--text);
    font-size: 15px;
    transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
    outline: none;
    font-family: var(--font-sans);
}
.form-field select option {
    background: var(--bg-2);
    color: var(--text);
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 4%, transparent);
}
.form-field textarea {
    resize: vertical;
    min-height: 100px;
}
.form-field .error {
    color: #ff8869;
    font-size: 12px;
    font-family: var(--font-mono);
}
.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-submit {
    margin-top: 8px;
    background: var(--text);
    color: var(--bg);
    padding: 16px;
    border-radius: 12px;
    font-weight: 500;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background 0.2s var(--ease);
}
.form-submit:hover {
    background: var(--accent);
}
.form-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.form-success {
    text-align: center;
    padding: 32px 16px;
}
.form-success .ok-mark {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
}
.form-success h3 {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 22px;
    margin: 0 0 8px;
    letter-spacing: -0.02em;
}
.form-success p {
    color: var(--text-mute);
    margin: 0;
    font-size: 14px;
}

/* footer --------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--line);
    background: var(--bg);
    padding: clamp(64px, 8vw, 96px) 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: clamp(24px, 4vw, 64px);
    margin-bottom: clamp(64px, 8vw, 120px);
}
.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-mute);
    margin: 0 0 18px;
    font-weight: 400;
}
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}
.footer-col a {
    color: var(--text);
    font-size: 14px;
    transition: color 0.2s var(--ease);
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-tagline {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(20px, 1.6vw, 24px);
    line-height: 1.2;
    color: var(--text-mute);
    margin: 16px 0 0;
    max-width: 28ch;
}
.footer-wordmark {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: clamp(64px, 18vw, 280px);
    letter-spacing: -0.05em;
    line-height: 0.85;
    color: var(--text);
    margin: 0;
    padding: 0;
    overflow: hidden;
    user-select: none;
}
.footer-wordmark .serif {
    font-family: var(--font-serif);
    font-style: italic;
    color: var(--accent);
}
.footer-meta {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--text-dim);
}
.footer-meta a {
    color: var(--text-mute);
}
.footer-meta a:hover {
    color: var(--text);
}

/* whatsapp floater ---------------------------------------- */
.wa-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 40;
    background: var(--text);
    color: var(--bg);
    border-radius: 999px;
    padding: 12px 18px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: -0.005em;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}
.wa-float:hover {
    transform: translateY(-2px);
    background: var(--accent);
}
.wa-float .icn-circle {
    width: 18px;
    height: 18px;
    background: var(--accent);
    color: var(--bg);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.wa-float:hover .icn-circle {
    background: var(--bg);
    color: var(--accent);
}

/* reveal animations --------------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.in {
    opacity: 1;
    transform: none;
}
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }
.reveal.delay-4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .hero-marquee-track, .pulse::after { animation: none; }
}

/* responsive ---------------------------------------------- */
@media (max-width: 960px) {
    .nav { display: none; }
    .section-head { grid-template-columns: 1fr; }
    .hero-meta { grid-template-columns: 1fr; }
    .hero[data-variant="split"] .hero-grid { grid-template-columns: 1fr; }
    .service { grid-template-columns: 60px 1fr; }
    .service-body { grid-column: 2 / -1; }
    .service-detail-inner { grid-template-columns: 1fr; gap: 24px; }
    .diff-grid { grid-template-columns: repeat(2, 1fr); }
    .stack-grid { grid-template-columns: repeat(3, 1fr); }
    .stack-categories { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .form-row-2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
    .diff-grid { grid-template-columns: 1fr; }
    .stack-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
}