/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #a29bfe;
  --accent: #00cec9;
  --dark: #0a0a0f;
  --dark-2: #12121a;
  --dark-3: #1a1a2e;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, var(--primary), var(--accent));
  --gradient-text: linear-gradient(135deg, var(--primary-light), var(--accent));
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img { max-width: 100%; display: block; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: var(--gradient);
  color: var(--white);
  border-color: transparent;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
}

.btn--outline {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}

.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn--nav {
  background: var(--gradient);
  color: var(--white) !important;
  padding: 10px 24px;
  font-size: 0.9rem;
}

.btn--nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
}

.btn--lg { padding: 16px 36px; font-size: 1rem; }

.btn--full { width: 100%; }

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: rgba(255,255,255,0.0);
}

.nav--scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}

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

.nav__logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-go { color: var(--primary); }
.logo-see { color: var(--accent); }
.logo-do { color: var(--gray-800); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav__links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-600);
  position: relative;
}

.nav__links a:not(.btn):hover {
  color: var(--primary);
}

.nav__links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: var(--transition);
  border-radius: 2px;
}

.nav__links a:not(.btn):hover::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 206, 201, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(108, 92, 231, 0.04) 0%, transparent 50%);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--dark);
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 500;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
}

.section--dark {
  background: var(--gray-100);
}

.section__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.section__tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about__card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
}

.about__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.about__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.about__card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.about__card p {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
}

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

.service {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.service:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.service__number {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 3rem;
  font-weight: 800;
  color: var(--gray-100);
  line-height: 1;
  transition: var(--transition);
}

.service:hover .service__number {
  color: rgba(108, 92, 231, 0.08);
}

.service__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 92, 231, 0.06);
  color: var(--primary);
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.service h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.service p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.service__tags li {
  padding: 4px 12px;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 0.78rem;
  font-weight: 500;
  border-radius: 50px;
  transition: var(--transition);
}

.service:hover .service__tags li {
  background: rgba(108, 92, 231, 0.06);
  color: var(--primary);
}

/* ===== CONTACT ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.contact__item {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.contact__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  border-radius: var(--radius);
}

.contact__item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.contact__item p,
.contact__item a {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.contact__item a:hover {
  color: var(--primary);
}

.contact__form {
  background: var(--gray-100);
  padding: 40px;
  border-radius: var(--radius-lg);
}

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

.form__group {
  margin-bottom: 16px;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 14px 20px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  color: var(--dark);
  transition: var(--transition);
  outline: none;
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.1);
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: var(--gray-400);
}

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

/* ===== FOOTER ===== */
.footer {
  background: var(--dark);
  color: var(--gray-500);
  padding: 60px 0 30px;
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  margin-bottom: 24px;
}

.footer__brand .logo-do {
  color: var(--gray-300);
}

.footer__brand p {
  margin-top: 8px;
  font-size: 0.9rem;
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 32px;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.footer__links a:hover {
  color: var(--white);
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer__bottom p {
  font-size: 0.82rem;
  color: var(--gray-600);
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
  }

  .nav__links.active {
    right: 0;
  }

  .nav__links a {
    font-size: 1.1rem;
    color: var(--gray-700);
  }

  .nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

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

  .nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

  .hero__title {
    font-size: 2.2rem;
    letter-spacing: -0.5px;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .hero__stats {
    gap: 32px;
  }

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

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

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

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

  .section {
    padding: 72px 0;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.9rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn--lg {
    padding: 14px 28px;
    font-size: 0.95rem;
    width: 100%;
  }

  .contact__form {
    padding: 24px;
  }

  .about__card,
  .service {
    padding: 28px 24px;
  }
}