/* ═══════════════════════════════════════════════════════════
   UX Solutions s.r.o. — Main Stylesheet
   Brand: #ffc04a → #ff6347 (orange gradient), #3a3a3a (dark)
═══════════════════════════════════════════════════════════ */

/* ── Fonts ─────────────────────────────────────────────── */
@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Montserrat';
  src: url('../fonts/Montserrat-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ── Variables ──────────────────────────────────────────── */
:root {
  --clr-orange-start: #ffc04a;
  --clr-orange-end:   #ff6347;
  --clr-orange-mid:   #ff8c3a;
  --clr-dark:         #0d0d0d;
  --clr-dark-2:       #141414;
  --clr-dark-3:       #1c1c1c;
  --clr-dark-4:       #242424;
  --clr-text:         #3a3a3a;
  --clr-text-light:   #888;
  --clr-white:        #ffffff;
  --clr-white-dim:    rgba(255,255,255,0.08);
  --clr-white-border: rgba(255,255,255,0.1);
  --gradient-orange:  linear-gradient(135deg, var(--clr-orange-start), var(--clr-orange-end));
  --gradient-orange-h: linear-gradient(90deg, var(--clr-orange-start), var(--clr-orange-end));
  --font-main:        'Montserrat', sans-serif;
  --font-bold:        'Montserrat', sans-serif;
  --nav-h:            72px;
  --radius:           12px;
  --radius-lg:        20px;
  --shadow-card:      0 4px 32px rgba(0,0,0,0.35);
  --shadow-glow:      0 0 40px rgba(255,140,58,0.18);
  --transition:       0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--clr-dark);
  color: var(--clr-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
sup { font-size: 0.55em; vertical-align: super; }

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-dark); }
::-webkit-scrollbar-thumb { background: var(--clr-orange-mid); border-radius: 3px; }

/* ── Selection ──────────────────────────────────────────── */
::selection { background: var(--clr-orange-mid); color: var(--clr-dark); }

/* ── Container ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-orange);
  color: var(--clr-dark);
  box-shadow: 0 4px 20px rgba(255,140,58,0.35);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(255,140,58,0.5);
  filter: brightness(1.08);
}

.btn--outline {
  background: transparent;
  color: var(--clr-white);
  border: 2px solid rgba(255,255,255,0.3);
}
.btn--outline:hover {
  border-color: var(--clr-orange-mid);
  color: var(--clr-orange-mid);
  transform: translateY(-2px);
}

.btn--full { width: 100%; justify-content: center; }

.btn__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: var(--clr-dark);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn--loading .btn__spinner { display: block; }
.btn--loading .btn__text { opacity: 0.6; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Section commons ────────────────────────────────────── */
.section {
  padding: 100px 0;
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--clr-white);
}

.section__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.55);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Tags ───────────────────────────────────────────────── */
.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--clr-white-dim);
  border: 1px solid var(--clr-white-border);
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.tag:hover {
  background: rgba(255,140,58,0.15);
  border-color: rgba(255,140,58,0.4);
  color: var(--clr-orange-start);
}

/* ════════════════════════════════════════════════════════
   NAVIGATION
════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition);
}

.nav.nav--scrolled {
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo { display: flex; align-items: center; text-decoration: none; }
.nav__logo-text {
  font-family: var(--font-bold);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: var(--transition);
  filter: drop-shadow(0 0 8px rgba(255,140,58,0.35));
}
.nav__logo:hover .nav__logo-text { filter: drop-shadow(0 0 14px rgba(255,140,58,0.65)); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  border-radius: 50px;
  transition: var(--transition);
}
.nav__link:hover { color: var(--clr-white); background: var(--clr-white-dim); }
.nav__link.active { color: var(--clr-orange-mid); }

.nav__link--cta {
  background: var(--gradient-orange);
  color: var(--clr-dark) !important;
  padding: 8px 20px;
  box-shadow: 0 2px 12px rgba(255,140,58,0.3);
}
.nav__link--cta:hover {
  background: var(--clr-white-dim) !important;
  color: var(--clr-white) !important;
  box-shadow: none;
}

/* Burger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  transition: var(--transition);
}
.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: var(--transition);
}
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ════════════════════════════════════════════════════════
   HERO
════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 60% 40%, #1a1008 0%, #0d0d0d 60%);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
  animation: heroFadeIn 1.2s ease both;
}

@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__logo-wrap {
  margin-bottom: 32px;
  animation: heroFadeIn 1s 0.1s ease both;
}
.hero__logo {
  height: 240px;
  width: auto;
  margin: 0 auto;
  filter: drop-shadow(0 0 32px rgba(255,140,58,0.4));
}
.hero__logo-name {
  font-size: clamp(2.1rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin: 12px 0 0;
  text-align: center;
}

.hero__tagline {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: var(--gradient-orange-h);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  animation: heroFadeIn 1s 0.25s ease both;
}

.hero__sub {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.5);
  margin-bottom: 40px;
  animation: heroFadeIn 1s 0.4s ease both;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: heroFadeIn 1s 0.55s ease both;
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  animation: heroFadeIn 1s 0.8s ease both, scrollBounce 2s 1.8s ease-in-out infinite;
}

.hero__scroll-arrow {
  display: block;
  width: 14px;
  height: 14px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg) translateY(-3px);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ════════════════════════════════════════════════════════
   SERVICES
════════════════════════════════════════════════════════ */
.services {
  background: var(--clr-dark-2);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--clr-dark-3);
  border: 1px solid var(--clr-white-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-orange);
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,140,58,0.35);
  box-shadow: var(--shadow-glow);
}
.service-card:hover::before { opacity: 0.04; }

.service-card__icon {
  width: 52px;
  height: 52px;
  margin-bottom: 20px;
  color: var(--clr-orange-mid);
  transition: var(--transition);
}
.service-card:hover .service-card__icon { color: var(--clr-orange-start); transform: scale(1.1); }
.service-card__icon svg { width: 100%; height: 100%; }

.service-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--clr-white);
}

.service-card__text {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
}

/* ════════════════════════════════════════════════════════
   ABOUT
════════════════════════════════════════════════════════ */
.about {
  background: var(--clr-dark);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,140,58,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: center;
}

.about__visual {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
}

.about__badge {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: var(--gradient-orange);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 60px rgba(255,140,58,0.3), 0 0 120px rgba(255,140,58,0.1);
  text-align: center;
  flex-shrink: 0;
}

.about__badge-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--clr-dark);
  line-height: 1;
}

.about__badge-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(0,0,0,0.65);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 6px;
  line-height: 1.4;
}

.about__stats {
  display: flex;
  gap: 24px;
  width: 100%;
  justify-content: center;
}

.about__stat {
  text-align: center;
  flex: 1;
  background: var(--clr-dark-3);
  border: 1px solid var(--clr-white-border);
  border-radius: var(--radius);
  padding: 20px 12px;
}

.about__stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about__stat-label {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.04em;
  margin-top: 4px;
}

.about__content .section__label { margin-bottom: 12px; }
.about__content .section__title { text-align: left; margin-bottom: 24px; }

.about__text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

/* ════════════════════════════════════════════════════════
   REFERENCES
════════════════════════════════════════════════════════ */
.references {
  background: var(--clr-dark-2);
}

.references__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.ref-card {
  display: flex;
  gap: 24px;
  background: var(--clr-dark-3);
  border: 1px solid var(--clr-white-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  align-items: flex-start;
}

.ref-card:hover {
  border-color: rgba(255,140,58,0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.ref-card__logo-wrap {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  background: var(--gradient-orange);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ref-card__initials {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-dark);
  letter-spacing: 0.02em;
}

.ref-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-white);
  margin-bottom: 10px;
}

.ref-card__desc {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin-bottom: 14px;
}

.ref-card__tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(255,140,58,0.12);
  border: 1px solid rgba(255,140,58,0.25);
  color: var(--clr-orange-start);
}

/* ════════════════════════════════════════════════════════
   CONTACT
════════════════════════════════════════════════════════ */
.contact {
  background: var(--clr-dark);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,140,58,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.contact__info .section__label { margin-bottom: 12px; }
.contact__info .section__title { text-align: left; margin-bottom: 20px; }

.contact__text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact__details { display: flex; flex-direction: column; gap: 16px; }

.contact__detail {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
}

.contact__detail-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--clr-orange-mid);
}

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 20px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }

.form-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
.form-label span { color: var(--clr-orange-mid); }

.form-input {
  background: var(--clr-dark-3);
  border: 1px solid var(--clr-white-border);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  color: var(--clr-white);
  transition: var(--transition);
  outline: none;
  width: 100%;
}

.form-input::placeholder { color: rgba(255,255,255,0.25); }

.form-input:focus {
  border-color: var(--clr-orange-mid);
  background: var(--clr-dark-4);
  box-shadow: 0 0 0 3px rgba(255,140,58,0.12);
}

.form-input.error { border-color: #ff4d4d; box-shadow: 0 0 0 3px rgba(255,77,77,0.12); }

.form-textarea { resize: vertical; min-height: 140px; }

/* Honeypot */
.form-group--honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* Feedback */
.form-feedback {
  font-size: 0.88rem;
  font-weight: 700;
  padding: 14px 18px;
  border-radius: var(--radius);
  display: none;
}
.form-feedback.success {
  display: block;
  background: rgba(72,199,142,0.12);
  border: 1px solid rgba(72,199,142,0.3);
  color: #48c78e;
}
.form-feedback.error {
  display: block;
  background: rgba(255,77,77,0.1);
  border: 1px solid rgba(255,77,77,0.25);
  color: #ff6b6b;
}

/* ════════════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════════════ */
.footer {
  background: var(--clr-dark-2);
  border-top: 1px solid var(--clr-white-border);
  padding: 48px 0 32px;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 24px;
}

.footer__logo {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  margin-bottom: 10px;
}

.footer__tagline {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer__nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer__link {
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  border-radius: 50px;
  transition: var(--transition);
}
.footer__link:hover { color: var(--clr-orange-mid); background: var(--clr-white-dim); }

.footer__bottom {
  border-top: 1px solid var(--clr-white-border);
  padding-top: 24px;
  text-align: center;
}

.footer__copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.25);
}

/* ════════════════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ════════════════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .about__visual { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .about__badge { width: 180px; height: 180px; }
  .about__badge-number { font-size: 2.8rem; }
  .contact__inner { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }

  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(13,13,13,0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 4px;
    transform: translateY(-110%);
    transition: transform var(--transition);
    border-bottom: 1px solid var(--clr-white-border);
  }
  .nav__links.open { transform: translateY(0); }
  .nav__link { width: 100%; text-align: center; padding: 12px 16px; }
  .nav__burger { display: flex; }

  .section { padding: 72px 0; }
  .services__grid { grid-template-columns: 1fr; }
  .references__grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .about__visual { flex-direction: column; }
  .about__stats { flex-direction: row; }

  .hero__logo { height: 160px; }

  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__nav { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: center; }
  .about__stats { flex-direction: column; }
  .ref-card { flex-direction: column; }
  .about__badge { width: 160px; height: 160px; }
  .about__badge-number { font-size: 2.4rem; }
}