:root {
  --sky: #00aeef;
  --blue: #1a6fd4;
  --navy: #0d1b2a;
  --navy-light: #1b2735;
  --orange: #f58220;
  --orange-light: #ffa040;
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}

.header.scrolled {
  background: rgba(13, 27, 42, 0.85);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--glass-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo img {
  height: 40px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--text);
}

.nav__cta {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: #fff !important;
  padding: 0.55rem 1.25rem;
  border-radius: 8px;
  font-weight: 600 !important;
  transition: transform 0.2s, box-shadow 0.2s !important;
}

.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(245, 130, 32, 0.4);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 7rem 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(0, 174, 239, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(245, 130, 32, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 40% at 60% 80%, rgba(26, 111, 212, 0.1) 0%, transparent 50%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 80%);
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero__title .gradient {
  background: linear-gradient(135deg, var(--sky), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__title .accent {
  color: var(--orange);
}

.hero__desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn--primary {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: #fff;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 130, 32, 0.35);
}

.btn--ghost {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__logo-wrap {
  position: relative;
}

.hero__logo-wrap::before {
  content: '';
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle, rgba(0, 174, 239, 0.15) 0%, transparent 70%);
  animation: glow 4s ease-in-out infinite alternate;
}

@keyframes glow {
  from { opacity: 0.6; transform: scale(1); }
  to { opacity: 1; transform: scale(1.05); }
}

.hero__logo-wrap img {
  position: relative;
  width: min(420px, 90%);
  filter: drop-shadow(0 20px 60px rgba(0, 174, 239, 0.2));
}

.hero__stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.stat__num {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--sky), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* ── Section common ── */
.section {
  padding: 6rem 0;
}

.section__label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section__desc {
  color: var(--text-muted);
  max-width: 560px;
  font-size: 1.05rem;
}

/* ── Services ── */
.services {
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 50%, var(--navy) 100%);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
}

.service-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--sky), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 174, 239, 0.25);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.service-card__icon--web {
  background: rgba(0, 174, 239, 0.12);
  color: var(--sky);
}

.service-card__icon--app {
  background: rgba(26, 111, 212, 0.12);
  color: var(--blue);
}

.service-card__icon--maintain {
  background: rgba(245, 130, 32, 0.12);
  color: var(--orange);
}

.service-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--glass-border);
}

/* ── About ── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}

.about__visual {
  position: relative;
}

.about__card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
}

.about__card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(0, 174, 239, 0.2), transparent 50%, rgba(245, 130, 32, 0.15));
  z-index: -1;
  opacity: 0.5;
}

.about__slogan {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.about__slogan .muted {
  color: var(--text-muted);
}

.about__slogan .highlight {
  color: var(--orange);
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.feature__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(0, 174, 239, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sky);
  font-size: 1.1rem;
}

.feature__title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.feature__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── Process ── */
.process {
  background: var(--navy-light);
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
  counter-reset: step;
}

.step {
  text-align: center;
  padding: 2rem 1.25rem;
  position: relative;
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--sky), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: 1rem;
}

.step__title {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── CTA ── */
.cta {
  padding: 6rem 0;
}

.cta__box {
  background: linear-gradient(135deg, rgba(0, 174, 239, 0.1), rgba(245, 130, 32, 0.08));
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(0, 174, 239, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.cta__title {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
}

.cta__desc {
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 2rem;
  position: relative;
}

.cta__email {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--sky);
  position: relative;
  transition: color 0.2s;
}

.cta__email:hover {
  color: var(--orange);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 2.5rem 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo img {
  height: 32px;
  opacity: 0.8;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Animations ── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero__desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__visual {
    order: -1;
  }

  .hero__logo-wrap img {
    width: min(300px, 80%);
  }

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

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

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

@media (max-width: 640px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(13, 27, 42, 0.95);
    backdrop-filter: blur(16px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--glass-border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .hero__stats {
    gap: 1.5rem;
  }

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

  .cta__box {
    padding: 2.5rem 1.5rem;
  }

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