/* ============================================================
   Vladimir Kon — Portfolio
   Design system: Motion-Driven · Monochrome + electric blue
   Type: Space Grotesk (display) / Archivo (body)
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Color — light (default) */
  --bg:            #fafafa;
  --bg-alt:        #f2f3f5;
  --surface:       #ffffff;
  --surface-2:     #f6f7f9;
  --text:          #09090b;
  --text-muted:    #52525b;
  --text-faint:    #71717a;
  --primary:       #18181b;
  --on-primary:    #ffffff;
  --accent:        #2563eb;
  --accent-hover:  #1d4ed8;
  --accent-soft:   rgba(37, 99, 235, 0.10);
  --border:        #e4e4e7;
  --border-strong: #d4d4d8;
  --ring:          #2563eb;
  --danger:        #dc2626;
  --success:       #16a34a;
  --shadow-sm: 0 1px 2px rgba(9, 9, 11, 0.05), 0 1px 3px rgba(9, 9, 11, 0.06);
  --shadow-md: 0 4px 12px rgba(9, 9, 11, 0.07), 0 2px 6px rgba(9, 9, 11, 0.05);
  --shadow-lg: 0 18px 40px rgba(9, 9, 11, 0.12), 0 8px 16px rgba(9, 9, 11, 0.06);
  --shadow-accent: 0 10px 30px rgba(37, 99, 235, 0.28);

  /* Typography */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Archivo', system-ui, -apple-system, 'Segoe UI', sans-serif;

  /* Spacing scale (8pt rhythm) */
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;
  --space-9: 96px; --space-10: 128px;

  /* Layout */
  --container: 1200px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --header-h: 72px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur: 320ms;

  /* Z-index scale */
  --z-nav: 100;
  --z-header: 90;
  --z-overlay: 80;
}

html[data-theme="dark"] {
  --bg:            #09090b;
  --bg-alt:        #101013;
  --surface:       #161619;
  --surface-2:     #1d1d21;
  --text:          #fafafa;
  --text-muted:    #a1a1aa;
  --text-faint:    #8b8b93;
  --primary:       #fafafa;
  --on-primary:    #09090b;
  --accent:        #3b82f6;
  --accent-hover:  #60a5fa;
  --accent-soft:   rgba(59, 130, 246, 0.16);
  --border:        #27272a;
  --border-strong: #3f3f46;
  --ring:          #60a5fa;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 44px rgba(0, 0, 0, 0.6);
  --shadow-accent: 0 10px 30px rgba(59, 130, 246, 0.32);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.1; letter-spacing: -0.02em; }

:focus-visible { outline: 3px solid var(--ring); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--space-5); }

/* ---------- Skip link ---------- */
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 1000;
  background: var(--primary); color: var(--on-primary);
  padding: 10px 16px; border-radius: var(--radius-sm);
  transform: translateY(-140%); transition: transform 200ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: var(--z-nav);
  background: transparent; pointer-events: none;
}
.scroll-progress span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), #22d3ee);
  transition: width 80ms linear;
}

/* ---------- Buttons ---------- */
.btn {
  --btn-py: 14px; --btn-px: 26px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: var(--btn-py) var(--btn-px);
  font-family: var(--font-display); font-weight: 500; font-size: 0.98rem;
  border-radius: var(--radius-pill); position: relative; overflow: hidden;
  transition: transform var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
  will-change: transform;
}
.btn--primary { background: var(--accent); color: #fff; box-shadow: var(--shadow-accent); }
.btn--primary:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn--primary:active { transform: translateY(0); }
.btn--ghost { background: transparent; color: var(--text); border: 1.5px solid var(--border-strong); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--block { width: 100%; }

.btn__spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid rgba(255,255,255,0.4); border-top-color: #fff;
  display: none; animation: spin 0.7s linear infinite;
}
.btn.is-loading .btn__label { opacity: 0.6; }
.btn.is-loading .btn__spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Icon buttons ---------- */
.icon-btn {
  width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); color: var(--text);
  transition: background-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}
.icon-btn:hover { background: var(--surface-2); color: var(--accent); }
.icon .icon, .icon-btn .icon { width: 22px; height: 22px; }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: fixed; inset: 0 0 auto 0; height: var(--header-h); z-index: var(--z-header);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
.header.is-scrolled { border-color: var(--border); box-shadow: var(--shadow-sm); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); width: 100%; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; }
.brand__mark {
  display: inline-grid; place-items: center; width: 38px; height: 38px;
  background: var(--primary); color: var(--on-primary);
  border-radius: 10px; font-size: 0.95rem; letter-spacing: 0.02em;
}
.brand__name { font-size: 1.02rem; letter-spacing: -0.01em; }

.nav { display: flex; align-items: center; gap: var(--space-2); }
.nav__link {
  padding: 8px 14px; border-radius: var(--radius-pill); font-size: 0.94rem; color: var(--text-muted);
  position: relative; transition: color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}
.nav__link:hover { color: var(--text); }
.nav__link.is-active { color: var(--text); }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--accent); border-radius: 2px;
}
.nav__link--cta { background: var(--primary); color: var(--on-primary); }
.nav__link--cta:hover { background: var(--accent); color: #fff; }
.nav__link--cta.is-active::after { display: none; }

.header__controls { display: flex; align-items: center; gap: var(--space-2); }

.lang-switch { display: inline-flex; align-items: center; gap: 2px; padding: 4px 6px; border: 1px solid var(--border); border-radius: var(--radius-pill); }
.lang-switch__btn { padding: 4px 8px; font-size: 0.82rem; font-weight: 600; color: var(--text-faint); border-radius: var(--radius-pill); letter-spacing: 0.03em; transition: color var(--dur), background-color var(--dur); }
.lang-switch__btn.is-active { color: var(--on-primary); background: var(--primary); }
.lang-switch__sep { color: var(--border-strong); font-size: 0.8rem; }

.theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Mobile menu button */
.menu-btn { display: none; flex-direction: column; gap: 5px; }
.menu-btn__bar { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 300ms var(--ease-out), opacity 200ms; }
.menu-btn.is-open .menu-btn__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.is-open .menu-btn__bar:nth-child(2) { opacity: 0; }
.menu-btn.is-open .menu-btn__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: 100svh; display: flex; align-items: center;
  padding-top: var(--header-h); overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 100%);
  opacity: 0.5;
}
.blob-layer { position: absolute; inset: 0; will-change: transform; }
.hero__grid[data-glide] { will-change: transform; }
.blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; will-change: transform; }
.blob--1 { width: 460px; height: 460px; background: #2563eb; top: -80px; left: -60px; animation: float1 18s ease-in-out infinite; }
.blob--2 { width: 400px; height: 400px; background: #22d3ee; bottom: -120px; right: -40px; animation: float2 22s ease-in-out infinite; }
.blob--3 { width: 320px; height: 320px; background: #a78bfa; top: 40%; right: 24%; opacity: 0.35; animation: float1 26s ease-in-out infinite reverse; }
html[data-theme="dark"] .blob { opacity: 0.28; }
@keyframes float1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(40px,30px) scale(1.08); } }
@keyframes float2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-30px,-40px) scale(1.12); } }

.hero__inner { position: relative; z-index: 1; text-align: center; padding-block: var(--space-8); }
.hero__eyebrow {
  display: inline-block; font-family: var(--font-display); font-weight: 500; font-size: 0.9rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent);
  padding: 6px 16px; border: 1px solid var(--accent-soft); background: var(--accent-soft); border-radius: var(--radius-pill);
  margin-bottom: var(--space-5);
}
.hero__title { font-size: clamp(2.6rem, 8vw, 5.4rem); font-weight: 700; letter-spacing: -0.03em; }
.hero__title span { display: block; }
.hero__title-alt {
  background: linear-gradient(120deg, var(--accent), #22d3ee 55%, #a78bfa);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
}
.hero__tagline { max-width: 44ch; margin: var(--space-5) auto 0; font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--text-muted); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; margin-top: var(--space-6); }

.hero__stats {
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-6) var(--space-8);
  margin-top: var(--space-8);
}
.hero__stats li { display: flex; flex-direction: column; align-items: center; }
.hero__stats strong { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; font-variant-numeric: tabular-nums; }
.hero__stats span { font-size: 0.88rem; color: var(--text-muted); letter-spacing: 0.01em; }

.hero__scroll {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 1;
  width: 26px; height: 42px; border: 2px solid var(--border-strong); border-radius: 14px;
  display: grid; place-items: start center; padding-top: 7px;
}
.hero__scroll-dot { width: 4px; height: 8px; border-radius: 3px; background: var(--accent); animation: scrolldot 1.6s ease-in-out infinite; }
@keyframes scrolldot { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }

/* ============================================================
   SECTIONS — shared
   ============================================================ */
.section { padding-block: clamp(var(--space-8), 12vw, var(--space-10)); }
.section__head { max-width: 640px; margin-bottom: var(--space-7); }
.section__eyebrow {
  font-family: var(--font-display); font-weight: 500; font-size: 0.85rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: var(--space-3);
}
.section__title { font-size: clamp(1.9rem, 4.5vw, 3rem); }
.section__sub { margin-top: var(--space-3); color: var(--text-muted); font-size: 1.08rem; }

/* ============================================================
   ABOUT
   ============================================================ */
.about__grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: var(--space-8); align-items: center; }
.about__visual { position: relative; }
.about__card {
  aspect-ratio: 4/3; border-radius: var(--radius-lg); background: linear-gradient(150deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); box-shadow: var(--shadow-lg); padding: var(--space-5);
  display: flex; flex-direction: column; gap: var(--space-5);
}
.about__card-row { display: flex; gap: 8px; }
.about__card-row span { width: 11px; height: 11px; border-radius: 50%; background: var(--border-strong); }
.about__card-row span:first-child { background: var(--accent); }
.about__card-devices { flex: 1; display: flex; align-items: flex-end; justify-content: center; gap: 14px; }
.dev { background: linear-gradient(160deg, var(--accent), #22d3ee); border-radius: 8px; box-shadow: var(--shadow-md); animation: rise 3s var(--ease-in-out) infinite alternate; }
.dev--desktop { width: 46%; height: 78%; border-radius: 8px 8px 3px 3px; }
.dev--tablet { width: 22%; height: 58%; animation-delay: 0.3s; }
.dev--phone { width: 13%; height: 42%; animation-delay: 0.6s; }
@keyframes rise { from { transform: translateY(6px); } to { transform: translateY(-6px); } }
.about__card-label { font-family: var(--font-display); font-size: 0.82rem; color: var(--text-faint); text-align: center; letter-spacing: 0.04em; }

.about__lead { font-size: 1.2rem; color: var(--text); margin-top: var(--space-4); font-weight: 500; }
.about__text { margin-top: var(--space-4); color: var(--text-muted); max-width: 62ch; }
.about__skills { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-6); }
.about__skills li {
  padding: 8px 16px; border: 1px solid var(--border); border-radius: var(--radius-pill);
  font-size: 0.9rem; color: var(--text-muted); background: var(--surface);
  transition: border-color var(--dur), color var(--dur), transform var(--dur);
}
.about__skills li:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* ============================================================
   SERVICES
   ============================================================ */
.services { background: var(--bg-alt); }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.service-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: var(--space-6); position: relative; overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}
.service-card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, var(--accent), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity var(--dur);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { opacity: 1; }
.service-card__icon {
  display: inline-grid; place-items: center; width: 54px; height: 54px; border-radius: var(--radius);
  background: var(--accent-soft); color: var(--accent); margin-bottom: var(--space-4);
  transition: transform var(--dur) var(--ease-out);
}
.service-card:hover .service-card__icon { transform: scale(1.08) rotate(-4deg); }
.service-card__icon svg { width: 26px; height: 26px; }
.service-card__title { font-size: 1.22rem; margin-bottom: var(--space-2); }
.service-card__text { color: var(--text-muted); font-size: 0.98rem; }
.service-card--accent { background: linear-gradient(145deg, var(--primary), #27272a); color: var(--on-primary); border-color: transparent; }
.service-card--accent .service-card__text { color: rgba(255,255,255,0.72); }
.service-card--accent .service-card__icon { background: rgba(255,255,255,0.12); color: #fff; }
html[data-theme="dark"] .service-card--accent { background: linear-gradient(145deg, #2563eb, #1e40af); }

/* ============================================================
   PORTFOLIO
   ============================================================ */
.portfolio__filters { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
.filter-btn {
  padding: 9px 18px; border-radius: var(--radius-pill); border: 1px solid var(--border);
  font-size: 0.9rem; font-weight: 500; color: var(--text-muted); background: var(--surface);
  transition: color var(--dur), background-color var(--dur), border-color var(--dur);
}
.filter-btn:hover { border-color: var(--border-strong); color: var(--text); }
.filter-btn.is-active { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }

.portfolio__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.project { transition: opacity 400ms var(--ease-out), transform 400ms var(--ease-out); }
.project.is-hidden { display: none; }
.project__media {
  position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); aspect-ratio: 4/3; cursor: pointer;
}
.project__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 600ms var(--ease-out); }
.project:hover .project__media img { transform: scale(1.06); }
.project__overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: var(--space-5); color: #fff;
  background: linear-gradient(to top, rgba(9,9,11,0.86) 0%, rgba(9,9,11,0.35) 45%, transparent 75%);
  opacity: 0; transform: translateY(8px); transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.project__media:hover .project__overlay, .project__media:focus-within .project__overlay { opacity: 1; transform: translateY(0); }
.project__cat { font-family: var(--font-display); font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; color: #93c5fd; margin-bottom: 6px; }
.project__name { font-size: 1.35rem; color: #fff; }
.project__desc { font-size: 0.94rem; color: rgba(255,255,255,0.82); margin-top: 4px; }
.project__link {
  position: absolute; top: var(--space-4); right: var(--space-4); width: 42px; height: 42px;
  display: grid; place-items: center; border-radius: 50%; background: rgba(255,255,255,0.16);
  backdrop-filter: blur(6px); color: #fff; transform: scale(0.8); transition: transform var(--dur) var(--ease-out), background-color var(--dur);
}
.project__link svg { width: 20px; height: 20px; }
.project__media:hover .project__link { transform: scale(1); background: var(--accent); }

/* ============================================================
   PROCESS
   ============================================================ */
.process { background: var(--bg-alt); }
.process__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-4); counter-reset: step; }
.process-step { position: relative; padding-top: var(--space-6); }
.process-step::before {
  content: ""; position: absolute; top: 14px; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--border)); border-radius: 2px;
}
.process-step:last-child::before { background: var(--accent); }
.process-step__num {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: var(--surface); border: 2px solid var(--accent); color: var(--accent);
  font-family: var(--font-display); font-weight: 600; font-size: 0.82rem; position: relative;
  margin-bottom: var(--space-3); box-shadow: 0 0 0 5px var(--bg-alt);
}
.process-step__title { font-size: 1.15rem; margin-bottom: var(--space-2); }
.process-step__text { color: var(--text-muted); font-size: 0.94rem; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.carousel { max-width: 780px; margin-inline: auto; }
.carousel__viewport { overflow: hidden; border-radius: var(--radius-lg); }
.carousel__track { display: flex; transition: transform 500ms var(--ease-out); }
.testimonial {
  flex: 0 0 100%; padding: clamp(var(--space-6), 5vw, var(--space-8));
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.testimonial__quote { font-family: var(--font-display); font-size: clamp(1.15rem, 2.6vw, 1.6rem); line-height: 1.45; font-weight: 500; letter-spacing: -0.01em; }
.testimonial__author { display: flex; align-items: center; gap: var(--space-3); margin-top: var(--space-5); }
.testimonial__avatar {
  display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent); font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
}
.testimonial__author strong { display: block; font-size: 1rem; }
.testimonial__author em { font-style: normal; color: var(--text-muted); font-size: 0.9rem; }

.carousel__controls { display: flex; align-items: center; justify-content: center; gap: var(--space-4); margin-top: var(--space-5); }
.carousel__btn {
  width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  display: grid; place-items: center; color: var(--text);
  transition: background-color var(--dur), color var(--dur), border-color var(--dur), transform var(--dur);
}
.carousel__btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-2px); }
.carousel__btn svg { width: 20px; height: 20px; }
.carousel__dots { display: flex; gap: 8px; }
.carousel__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); transition: transform var(--dur), background-color var(--dur); }
.carousel__dot.is-active { background: var(--accent); transform: scale(1.35); }

/* ============================================================
   CONTACT
   ============================================================ */
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); align-items: start; }
.contact__lead { color: var(--text-muted); margin-top: var(--space-4); max-width: 42ch; font-size: 1.05rem; }
.contact__links { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-6); }
.contact-link {
  display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4);
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface);
  transition: border-color var(--dur), transform var(--dur), box-shadow var(--dur);
}
.contact-link:hover { border-color: var(--accent); transform: translateX(4px); box-shadow: var(--shadow-md); }
.contact-link__icon { display: grid; place-items: center; width: 46px; height: 46px; border-radius: var(--radius-sm); background: var(--accent-soft); color: var(--accent); flex-shrink: 0; }
.contact-link__icon svg { width: 22px; height: 22px; }
.contact-link em { display: block; font-style: normal; font-size: 0.82rem; color: var(--text-faint); }
.contact-link strong { font-size: 1rem; font-weight: 600; }

.contact__form {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: clamp(var(--space-5), 4vw, var(--space-7)); box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; gap: var(--space-4);
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 0.9rem; font-weight: 600; font-family: var(--font-display); }
.field .req { color: var(--accent); }
.field input, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 14px; font: inherit; color: var(--text);
  background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  transition: border-color var(--dur), box-shadow var(--dur);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-faint); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field.is-invalid input, .field.is-invalid textarea { border-color: var(--danger); }
.field__error { color: var(--danger); font-size: 0.82rem; min-height: 1em; }
.form__success {
  margin-top: 4px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success);
  border: 1px solid color-mix(in srgb, var(--success) 40%, transparent); font-size: 0.94rem; font-weight: 500;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--border); padding-block: var(--space-7); background: var(--bg-alt); }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-4); }
.brand--footer .brand__mark { width: 34px; height: 34px; }
.footer__social { display: flex; gap: var(--space-2); }
.footer__social a {
  width: 42px; height: 42px; display: grid; place-items: center; border-radius: var(--radius-sm);
  border: 1px solid var(--border); color: var(--text-muted);
  transition: color var(--dur), border-color var(--dur), transform var(--dur), background-color var(--dur);
}
.footer__social a:hover { color: #fff; background: var(--accent); border-color: var(--accent); transform: translateY(-3px); }
.footer__social svg { width: 20px; height: 20px; }
.footer__copy { color: var(--text-faint); font-size: 0.88rem; }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .process__list { grid-template-columns: repeat(3, 1fr); row-gap: var(--space-6); }
  .process-step::before { display: none; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 4px; padding: var(--space-4) var(--space-5) var(--space-6);
    background: var(--bg); border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg);
    transform: translateY(-120%); transition: transform 360ms var(--ease-out); z-index: var(--z-nav);
  }
  .nav.is-open { transform: translateY(0); }
  .nav__link { padding: 14px 12px; font-size: 1.05rem; border-radius: var(--radius-sm); }
  .nav__link.is-active::after { left: 12px; right: auto; width: 20px; }
  .nav__link--cta { text-align: center; margin-top: 6px; }
  .menu-btn { display: inline-flex; }
  .brand__name { display: none; }

  .about__grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .about__visual { max-width: 420px; }
  .portfolio__grid { grid-template-columns: repeat(2, 1fr); }
  .contact__grid { grid-template-columns: 1fr; gap: var(--space-6); }
}

@media (max-width: 560px) {
  .container { padding-inline: var(--space-4); }
  .services__grid { grid-template-columns: 1fr; }
  .portfolio__grid { grid-template-columns: 1fr; }
  .process__list { grid-template-columns: 1fr 1fr; }
  .hero__stats { gap: var(--space-5); }
  .hero__actions .btn { flex: 1 1 auto; }
  .brand__name { display: inline; }
  .lang-switch { padding: 3px 5px; }
  .footer__inner { flex-direction: column; text-align: center; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .blob { animation: none; }
  .blob-layer, .hero__grid[data-glide] { transform: none !important; }
  html { scroll-behavior: auto; }
}

/* Print */
@media print {
  .header, .hero__scroll, .scroll-progress, .carousel__controls, .contact__form { display: none; }
}