/* ============================================
   XKBOX AI — Official Website Stylesheet
   Dark Futurism / Cyber Intelligence Theme
   ============================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* ── CSS Custom Properties ── */
:root {
  --bg:           #050810;
  --surface:      #0a0f1e;
  --card:         rgba(15, 23, 42, 0.7);
  --card-solid:   #0f172a;
  --border:       rgba(99, 179, 237, 0.12);
  --border-hover: rgba(99, 179, 237, 0.4);

  --accent:       #63b3ed;
  --accent-dim:   rgba(99, 179, 237, 0.15);
  --accent-glow:  rgba(99, 179, 237, 0.35);
  --violet:       #a78bfa;
  --violet-dim:   rgba(167, 139, 250, 0.15);
  --emerald:      #34d399;
  --emerald-dim:  rgba(52, 211, 153, 0.15);

  --text-primary:   #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(99, 179, 237, 0.2);
  --shadow-glow-lg: 0 0 80px rgba(99, 179, 237, 0.15);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-dim);
  color: var(--accent);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(99,179,237,0.3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99,179,237,0.5); }

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

/* ── Utility Classes ── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

/* ── Gradient Text ── */
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #4299e1 100%);
  color: #050810;
  box-shadow: 0 4px 20px rgba(99, 179, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 179, 237, 0.5);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid rgba(99, 179, 237, 0.4);
}

.btn-ghost:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ── Scroll Animation Base ── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }
.animate-delay-5 { transition-delay: 0.5s; }
.animate-delay-6 { transition-delay: 0.6s; }

/* ── ═══════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all 0.4s ease;
}

.nav.scrolled {
  padding: 12px 0;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(99, 179, 237, 0.08);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
}

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

.nav__link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 16px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: transform var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-switcher__trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(99, 179, 237, 0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-body);
  transition: all var(--transition);
  cursor: pointer;
}

.lang-switcher__trigger:hover {
  background: rgba(99, 179, 237, 0.15);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.lang-switcher__trigger svg {
  transition: transform var(--transition);
}

.lang-switcher.open .lang-switcher__trigger svg {
  transform: rotate(180deg);
}

.lang-switcher__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: rgba(10, 15, 30, 0.95);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  min-width: 160px;
  padding: 6px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s ease;
}

.lang-switcher.open .lang-switcher__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  cursor: pointer;
  width: 100%;
  text-align: left;
}

.lang-switcher__option:hover {
  background: var(--accent-dim);
  color: var(--text-primary);
}

.lang-switcher__option.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.lang-switcher__flag {
  font-size: 16px;
  line-height: 1;
}

/* Mobile Nav */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 8, 16, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s ease;
}

.nav__mobile.open {
  opacity: 1;
  visibility: visible;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 12px 32px;
  transition: all var(--transition);
}

.nav__mobile-link:hover,
.nav__mobile-link.active {
  color: var(--accent);
}

/* ── ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}

/* Background orbs */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: floatOrb 20s ease-in-out infinite;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 179, 237, 0.25) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation-delay: 0s;
  animation-duration: 25s;
}

.hero__orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.2) 0%, transparent 70%);
  bottom: -50px;
  left: -100px;
  animation-delay: -8s;
  animation-duration: 22s;
}

.hero__orb--3 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.15) 0%, transparent 70%);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -15s;
  animation-duration: 30s;
}

/* Grid pattern overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 179, 237, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 179, 237, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -40px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.97); }
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent-dim);
  border: 1px solid rgba(99, 179, 237, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero__title-line {
  display: block;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 1px;
  animation: scrollBounce 2s ease-in-out infinite;
  z-index: 2;
}

.hero__scroll-hint-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

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

/* ── ═══════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════ */
.about {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 50%, var(--bg) 100%);
  position: relative;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 60px;
}

.about__text p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about__text p:last-child { margin-bottom: 0; }

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.stat-card__number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* ── ═══════════════════════════════════════
   SERVICES
   ═══════════════════════════════════════ */
.services {
  position: relative;
}

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

.services__header .section-subtitle {
  margin: 0 auto;
}

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

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.35s ease;
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
  transition: all var(--transition);
}

.service-card:nth-child(1) .service-card__icon { background: var(--accent-dim); }
.service-card:nth-child(2) .service-card__icon { background: var(--violet-dim); }
.service-card:nth-child(3) .service-card__icon { background: var(--emerald-dim); }
.service-card:nth-child(4) .service-card__icon { background: rgba(251, 146, 60, 0.15); }
.service-card:nth-child(5) .service-card__icon { background: rgba(244, 114, 182, 0.15); }
.service-card:nth-child(6) .service-card__icon { background: rgba(251, 191, 36, 0.15); }

.service-card:hover .service-card__icon {
  transform: scale(1.1);
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card:nth-child(1) .service-card__icon svg { stroke: var(--accent); }
.service-card:nth-child(2) .service-card__icon svg { stroke: var(--violet); }
.service-card:nth-child(3) .service-card__icon svg { stroke: var(--emerald); }
.service-card:nth-child(4) .service-card__icon svg { stroke: #fb923c; }
.service-card:nth-child(5) .service-card__icon svg { stroke: #f472b6; }
.service-card:nth-child(6) .service-card__icon svg { stroke: #fbbf24; }

.service-card__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.service-card__desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

/* ── ═══════════════════════════════════════
   TECHNOLOGY
   ═══════════════════════════════════════ */
.tech {
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
  position: relative;
}

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

.tech__header .section-subtitle {
  margin: 0 auto;
}

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

.tech-pillar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.tech-pillar:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.tech-pillar__accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.tech-pillar:nth-child(1) .tech-pillar__accent { background: linear-gradient(90deg, var(--accent), transparent); }
.tech-pillar:nth-child(2) .tech-pillar__accent { background: linear-gradient(90deg, var(--violet), transparent); }
.tech-pillar:nth-child(3) .tech-pillar__accent { background: linear-gradient(90deg, var(--emerald), transparent); }
.tech-pillar:nth-child(4) .tech-pillar__accent { background: linear-gradient(90deg, #fb923c, transparent); }

.tech-pillar__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.tech-pillar:nth-child(1) .tech-pillar__title { color: var(--accent); }
.tech-pillar:nth-child(2) .tech-pillar__title { color: var(--violet); }
.tech-pillar:nth-child(3) .tech-pillar__title { color: var(--emerald); }
.tech-pillar:nth-child(4) .tech-pillar__title { color: #fb923c; }

.tech-pillar__title svg {
  width: 28px;
  height: 28px;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.tech-pillar__features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tech-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.tech-feature__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 7px;
}

.tech-pillar:nth-child(1) .tech-feature__dot { background: var(--accent); }
.tech-pillar:nth-child(2) .tech-feature__dot { background: var(--violet); }
.tech-pillar:nth-child(3) .tech-feature__dot { background: var(--emerald); }
.tech-pillar:nth-child(4) .tech-feature__dot { background: #fb923c; }

/* ── ═══════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════ */
.contact {
  position: relative;
}

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

.contact__info-title {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
}

.contact__info-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact__detail {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.contact__detail-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__detail-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact__detail-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact__detail-value {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.6;
}

/* Contact Form */
.contact__form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  transition: all var(--transition);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  background: rgba(99, 179, 237, 0.05);
  box-shadow: 0 0 0 3px rgba(99, 179, 237, 0.12);
}

.form-input.error,
.form-textarea.error {
  border-color: #f87171;
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
}

.form-error {
  font-size: 12px;
  color: #f87171;
  margin-top: 6px;
  display: none;
}

.form-error.show { display: block; }

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

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

.form-submit {
  width: 100%;
  margin-top: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.form-submit.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #4299e1 100%);
  color: #050810;
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 179, 237, 0.4);
}

.form-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.form-submit .spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(5, 8, 16, 0.3);
  border-top-color: #050810;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.form-submit.loading .btn-text { opacity: 0.7; }
.form-submit.loading .spinner { display: block; }

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

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success.show {
  display: block;
}

.form-success__icon {
  width: 64px;
  height: 64px;
  background: var(--emerald-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--emerald);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.form-success__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-success__text {
  font-size: 14px;
  color: var(--text-secondary);
}

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

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

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer__brand-logo svg {
  width: 32px;
  height: 32px;
}

.footer__brand-desc {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 320px;
  line-height: 1.7;
}

.footer__address-title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.footer__address-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer__lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.footer__lang span {
  color: var(--accent);
}

/* ── ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile {
    display: flex;
  }

  .hero__title {
    letter-spacing: -1px;
  }

  .hero__scroll-hint {
    display: none;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

  .tech__pillars {
    grid-template-columns: 1fr;
  }

  .about__stats {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-card__number {
    font-size: 36px;
  }

  .contact__form {
    padding: 32px 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer__inner {
    flex-direction: column;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    justify-content: center;
  }

  .about__stats {
    grid-template-columns: 1fr;
  }
}