@font-face { font-family: "Roboto"; font-style: normal; font-weight: 300; font-display: swap;
  src: url("../fonts/roboto-latin-ext-300-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 300; font-display: swap;
  src: url("../fonts/roboto-latin-300-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/roboto-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/roboto-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("../fonts/roboto-latin-ext-500-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 500; font-display: swap;
  src: url("../fonts/roboto-latin-500-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("../fonts/roboto-latin-ext-700-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Roboto"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("../fonts/roboto-latin-700-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  --c-dark: #0f0f0f;
  --c-footer: #171717;
  --c-text: #222222;
  --c-muted: #525252;
  --c-light: #eeeeee;
  --c-light-2: #f5f5f5;
  --c-white: #ffffff;
  --c-accent: #961fff;          
  --c-accent-hover: #7f12e0;
  --grad: linear-gradient(90deg, #a730d0 0%, #1fc1e4 100%);  
  --c-whatsapp: #27d061;

  --font: "Roboto", Arial, sans-serif;
  --container: 1160px;
  --gutter: 20px;
  --radius: 30px;
  --header-h: 72px;
  --section-pad: clamp(64px, 10vw, 120px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body { margin: 0; font-family: var(--font); font-weight: 300; font-size: 18px; line-height: 1.55; color: var(--c-text); background: var(--c-white); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { font-weight: 600; line-height: 1.2; margin: 0 0 .6em; }
p { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.2em; }
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.narrow { max-width: 760px; }
.section { padding-block: var(--section-pad); }
.section--light { background: var(--c-light); }
.section--light2 { background: var(--c-light-2); }
.section--accent { background: var(--c-accent); color: var(--c-white); }
.section-title { font-size: clamp(30px, 4vw, 42px); margin-bottom: 24px; }
.section-lead { max-width: 560px; color: var(--c-muted); margin-bottom: clamp(40px, 6vw, 80px); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 16px; top: -60px; background: #fff; color: #000; padding: 8px 14px; border-radius: 6px; z-index: 1000; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid #1fc1e4; outline-offset: 3px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 56px; padding: 0 36px;
  border-radius: 60px; font: 500 16px/1 var(--font); text-decoration: none; border: 0; cursor: pointer;
  transition: transform .2s ease, background-color .2s ease, opacity .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn--grad { color: #fff; background: var(--grad); }
.btn--outline { color: #fff; background: transparent; position: relative; }
.btn--outline::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.btn--accent { color: #fff; background: var(--c-accent); }
.btn--accent:hover { background: var(--c-accent-hover); }
.btn--white { color: var(--c-accent); background: #fff; }

.site-header { position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: 50; color: #fff;
  transition: background-color .3s ease, box-shadow .3s ease; }
.site-header.is-scrolled { background: rgba(15, 15, 15, .92); backdrop-filter: blur(8px); box-shadow: 0 1px 0 rgba(255,255,255,.06); }
.site-header .container { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 22px; }
.logo img { width: 40px; height: 40px; }
.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-size: 16px; font-weight: 400; opacity: .85; transition: opacity .2s; }
.nav-links a:hover { opacity: 1; }
.burger { display: inline-flex; flex-direction: column; justify-content: center; gap: 6px; width: 44px; height: 44px; padding: 10px 6px;
  background: none; border: 0; cursor: pointer; }
.burger span { display: block; height: 2px; background: #fff; border-radius: 2px; }
@media (max-width: 980px) { .nav-links { display: none; } }

.side-menu { position: fixed; inset: 0; z-index: 100; visibility: hidden; }
.side-menu.is-open { visibility: visible; }
.side-menu__overlay { position: absolute; inset: 0; background: rgba(0,0,0,.6); opacity: 0; transition: opacity .3s ease; }
.side-menu.is-open .side-menu__overlay { opacity: 1; }
.side-menu__panel { position: absolute; top: 0; right: 0; height: 100%; width: min(420px, 100%); background: var(--c-dark); color: #fff;
  padding: 88px 40px 40px; display: flex; flex-direction: column; transform: translateX(100%); transition: transform .35s ease; overflow-y: auto; }
.side-menu.is-open .side-menu__panel { transform: none; }
.side-menu__close { position: absolute; top: 20px; right: 20px; width: 44px; height: 44px; background: none; border: 0; color: #fff; font-size: 34px; line-height: 1; cursor: pointer; }
.side-menu ul { list-style: none; padding: 0; margin: 0 0 40px; }
.side-menu li a { display: block; padding: 10px 0; font-size: 24px; font-weight: 500; text-decoration: none; }
.side-menu li a:hover { color: #1fc1e4; }
.side-menu__note { color: #aaa; font-size: 16px; margin-top: auto; }
.social { display: flex; gap: 12px; }
.social a { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.1); transition: background .2s; }
.social a:hover { background: rgba(255,255,255,.2); }
.social svg { width: 18px; height: 18px; fill: currentColor; }
body.menu-open { overflow: hidden; }

.cover { position: relative; color: #fff; background-color: var(--c-dark); background-size: cover; background-position: center;
  display: flex; align-items: center; isolation: isolate; }
.cover::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to bottom, rgba(0,0,0,.2), rgba(0,0,0,.8)); }
.cover--dim::before { background: rgba(0,0,0,.7); }
.cover--full { min-height: max(550px, 100vh); min-height: max(550px, 100svh); }
.cover--mid { min-height: 520px; }
.cover--short { min-height: 360px; text-align: center; justify-content: center; }
.cover h1 { font-size: clamp(48px, 9vw, 96px); font-weight: 600; margin-bottom: 20px; }
.cover h2 { font-size: clamp(32px, 5vw, 56px); }
.cover p { font-size: clamp(17px, 2vw, 20px); max-width: 640px; opacity: .9; }
.cover .actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.cover--short .container { display: flex; flex-direction: column; align-items: center; }

/* background images (swap files in assets/img, keep names) */
.bg-hero     { background-image: url("../img/hero.jpg"); }
.bg-about    { background-image: url("../img/about-bg.jpg"); }
.bg-fitout   { background-image: url("../img/fitout-cover.jpg"); }
.bg-helian20 { background-image: url("../img/helian20-cover.jpg"); }
.bg-services { background-image: url("../img/services-bg.jpg"); }

.scroll-hint { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); width: 26px; height: 42px; border: 2px solid rgba(255,255,255,.6); border-radius: 14px; }
.scroll-hint::after { content: ""; position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; background: #fff; border-radius: 2px; animation: hint 1.6s infinite; }
@keyframes hint { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

.division h2 { font-size: clamp(28px, 3.5vw, 38px); }
.division ul { padding-left: 0; list-style: none; }
.division li { position: relative; padding-left: 28px; margin-bottom: 8px; }
.division li::before { content: ""; position: absolute; left: 0; top: .55em; width: 12px; height: 12px; border-radius: 50%; background: var(--grad); }

.projects-intro { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
@media (max-width: 860px) { .projects-intro { grid-template-columns: 1fr; } }

.slider { position: relative; }
.slider__track { display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: none; border-radius: 12px; }
.slider__track::-webkit-scrollbar { display: none; }
.slider__slide { flex: 0 0 100%; scroll-snap-align: start; aspect-ratio: 4 / 3; margin: 0; background: #ddd; border-radius: 12px; overflow: hidden; }
.slider__slide img { width: 100%; height: 100%; object-fit: cover; }
.slider__btn { position: absolute; top: 50%; translate: 0 -50%; width: 48px; height: 48px; border-radius: 50%; border: 0; cursor: pointer;
  background: rgba(255,255,255,.9); color: #111; font-size: 22px; display: grid; place-items: center; box-shadow: 0 2px 10px rgba(0,0,0,.15); }
.slider__btn--prev { left: 12px; } .slider__btn--next { right: 12px; }
.slider__dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.slider__dots button { width: 10px; height: 10px; border-radius: 50%; border: 0; padding: 0; background: #c7c7c7; cursor: pointer; }
.slider__dots button[aria-current="true"] { background: var(--c-accent); }

.done-projects { margin-top: var(--section-pad); }
.done-list { list-style: none; padding: 0; display: grid; gap: 40px; }
.done-list li { display: grid; grid-template-columns: 40px 1fr; gap: 20px; }
.done-list .check { width: 40px; height: 40px; border-radius: 50%; background: var(--c-light); display: grid; place-items: center; color: var(--c-accent); }
.done-list h3 { font-size: 22px; margin-bottom: 8px; }
.done-list p { color: var(--c-muted); margin: 0; }

.cta { text-align: center; }
.cta h2 { font-size: clamp(28px, 4vw, 42px); }
.cta p { max-width: 560px; margin: 0 auto 32px; opacity: .9; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.split img { border-radius: 12px; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: 14px; font-weight: 500; color: var(--c-accent); margin-bottom: 12px; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; list-style: none; padding: 0; margin: 0; }
.card { background: #fff; border-radius: 8px; padding: 32px 28px; box-shadow: 0 0 10px rgba(0,0,0,.1); transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.card__num { font-size: 14px; font-weight: 500; color: var(--c-accent); margin-bottom: 14px; display: block; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { font-size: 16px; color: var(--c-muted); margin: 0; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cards { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 80px); }
.contact-info a { text-decoration: none; }
.contact-info .big { font-size: clamp(22px, 2.6vw, 28px); font-weight: 500; display: block; margin-bottom: 6px; }
.contact-info address { font-style: normal; margin: 24px 0; opacity: .9; }
.form { display: grid; gap: 16px; }
.form label { font-size: 14px; font-weight: 400; opacity: .85; }
.form input, .form textarea { width: 100%; font: 400 17px/1.4 var(--font); color: #fff; background: transparent;
  border: 1px solid #c7c7c7; border-radius: 8px; padding: 14px 16px; }
.form input::placeholder, .form textarea::placeholder { color: rgba(255,255,255,.65); }
.form input:focus, .form textarea:focus { outline: none; border-color: #fff; box-shadow: 0 0 0 2px rgba(255,255,255,.35); }
.form textarea { min-height: 120px; resize: vertical; }
.form .consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; line-height: 1.45; }
.form .consent input { width: 18px; height: 18px; margin-top: 2px; flex: none; accent-color: #fff; }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form .btn { justify-self: start; background: #fff; color: var(--c-accent); border-radius: var(--radius); }
.form .btn[disabled] { opacity: .6; cursor: wait; }
.form-status { min-height: 1.5em; font-size: 16px; margin: 0; }
.form-status.is-ok { color: #fff; font-weight: 500; }
.form-status.is-error { color: #ffd2d2; font-weight: 500; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.site-footer { background: var(--c-footer); color: #fff; padding: 64px 0 32px; font-size: 16px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
.footer-grid h4 { color: var(--c-muted); font-size: 14px; letter-spacing: .1em; font-weight: 500; margin: 0 0 16px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { text-decoration: none; opacity: .85; }
.footer-grid a:hover { opacity: 1; }
.footer-logo img { width: 90px; height: auto; margin-bottom: 16px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); margin-top: 48px; padding-top: 24px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: #8a8a8a; font-size: 14px; }
.footer-bottom a { color: #8a8a8a; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

.float-contact { position: fixed; right: 20px; bottom: 20px; z-index: 40; display: flex; flex-direction: column; gap: 10px; }
.float-contact a { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; color: #fff; box-shadow: 0 4px 14px rgba(0,0,0,.25); transition: transform .2s; }
.float-contact a:hover { transform: scale(1.08); }
.float-contact svg { width: 24px; height: 24px; fill: currentColor; }
.fc-whatsapp { background: var(--c-whatsapp); }
.fc-mail { background: var(--c-accent); }
.fc-phone { background: #1f5bff; }

.cookie { position: fixed; left: 20px; bottom: 20px; z-index: 60; max-width: 420px; background: #000; color: #fff;
  padding: 24px; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,.35); font-size: 15px; font-weight: 400; }
.cookie[hidden] { display: none; }
.cookie p { margin-bottom: 16px; }
.cookie a { color: #fff; }
.cookie .btn { min-height: 44px; padding: 0 24px; font-size: 14px; text-transform: uppercase; font-weight: 600; background: #fff; color: #000; }
@media (max-width: 560px) { .cookie { left: 12px; right: 84px; bottom: 12px; padding: 18px; } }

.page-header { background: var(--c-dark); color: #fff; padding: calc(var(--header-h) + 48px) 0 48px; }
.page-header h1 { font-size: clamp(32px, 5vw, 48px); margin: 0; }
.legal { font-size: 17px; }
.legal h2 { font-size: 22px; margin-top: 2em; }
.legal .back { display: inline-block; margin-top: 40px; color: var(--c-accent); }