/* ============================================================
   CAMILO.APP — Full Stack Mobile Developer Landing
   ============================================================ */

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

:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #0f0f18;
  --bg-card: #13132a;
  --bg-card-hover: #181838;
  --border: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);

  /* Text */
  --text-primary: #f1f1f3;
  --text-secondary: #a0a0b8;
  --text-muted: #5c5c78;

  /* Accent */
  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.3);
  --accent-2: #3b82f6;
  --gradient: linear-gradient(135deg, #8b5cf6, #3b82f6);
  --gradient-text: linear-gradient(135deg, #c084fc, #60a5fa);

  /* Sizing */
  --container-max: 1100px;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ---------- HEADER / NAV ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
}

.header--scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
  padding: 10px 0;
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--gradient);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 800;
}

.nav__logo-dot {
  color: var(--accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}

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

.nav__link--cta {
  color: var(--text-primary);
  background: rgba(139, 92, 246, 0.15);
  padding: 8px 20px;
  border-radius: 100px;
  transition: background 0.2s ease;
}

.nav__link--cta:hover {
  background: rgba(139, 92, 246, 0.28);
}

/* Mobile toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__toggle--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle--active span:nth-child(2) {
  opacity: 0;
}
.nav__toggle--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
  box-shadow: 0 6px 30px rgba(139, 92, 246, 0.5);
  transform: translateY(-1px);
}

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

.btn--ghost:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
}

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

/* ---------- SECTION HEADERS ---------- */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.section-header__tag--light {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
}

.section-header__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 600px;
  margin: 0 auto 16px;
}

.section-header__desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

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

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(139, 92, 246, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 80%, rgba(59, 130, 246, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 20%, rgba(139, 92, 246, 0.05), transparent 50%);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-light);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.25);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero__title {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 24px;
  color: var(--text-primary);
}

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

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Hero Stats */
.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--accent-light);
  margin-bottom: 4px;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.hero__stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-light);
}

/* Scroll indicator */
.hero__scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  z-index: 1;
}

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

/* ---------- SERVICES ---------- */
.services {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
}

.service-card--featured {
  border-color: rgba(139, 92, 246, 0.3);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.06) 0%, var(--bg-card) 40%);
}

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(139, 92, 246, 0.12);
  border-radius: var(--radius);
  color: var(--accent-light);
  margin-bottom: 20px;
}

.service-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.service-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

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

.service-card__tags li {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
}

/* ---------- PROCESS ---------- */
.process {
  padding: 120px 0;
}

.process__timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0;
  position: relative;
}

/* line connecting steps on desktop */
.process__timeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 80px;
  right: 80px;
  height: 1px;
  background: var(--border);
  z-index: 0;
}

.process-step {
  position: relative;
  z-index: 1;
  padding: 0 16px;
  text-align: center;
}

.process-step__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent-light);
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.process-step:hover .process-step__number {
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.15);
}

.process-step__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.process-step__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ---------- TECH STACK ---------- */
.stack {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.stack__categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.stack-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.stack-category__title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.stack-category__items {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.stack-badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  transition: all 0.2s ease;
}

.stack-badge:hover {
  color: var(--text-primary);
  border-color: rgba(139, 92, 246, 0.4);
  background: rgba(139, 92, 246, 0.08);
}

/* ---------- CONTACT ---------- */
.contact {
  padding: 120px 0;
}

.contact__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 56px;
  position: relative;
  overflow: hidden;
}

.contact__card::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.contact__title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
  margin-top: 12px;
}

.contact__desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
}

.contact__methods {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact__method {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.contact__method:hover {
  color: var(--text-primary);
}

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  z-index: 1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.form-input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.25s ease, background 0.25s ease;
  outline: none;
}

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

.form-input:focus {
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.04);
}

.form-input--textarea {
  resize: vertical;
  min-height: 100px;
}

.contact__form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- FOOTER ---------- */
.footer {
  padding: 64px 0 40px;
  border-top: 1px solid var(--border);
}

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

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer__tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

.footer__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.footer__link:hover {
  color: var(--text-primary);
}

.footer__copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer__domain {
  color: var(--accent-light);
  font-weight: 600;
}

/* ---------- ANIMATIONS ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.7s ease forwards;
}

.fade-up:nth-child(2) { animation-delay: 0.1s; }
.fade-up:nth-child(3) { animation-delay: 0.2s; }
.fade-up:nth-child(4) { animation-delay: 0.3s; }
.fade-up:nth-child(5) { animation-delay: 0.4s; }

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll-reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 100px 32px 32px;
    gap: 24px;
    transition: right 0.35s ease;
    border-left: 1px solid var(--border);
  }

  .nav__links--open {
    right: 0;
  }

  .nav__link {
    font-size: 1.1rem;
  }

  .nav__toggle {
    display: flex;
    z-index: 1001;
  }

  .hero {
    padding: 100px 0 60px;
    text-align: center;
  }

  .hero__stats {
    gap: 32px;
  }

  .hero__stat-divider {
    display: none;
  }

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

  .process__timeline {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .process__timeline::before {
    display: none;
  }

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

  .contact__card {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 32px 24px;
  }

  .contact__title {
    font-size: 1.6rem;
  }

  .footer__links {
    gap: 20px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

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

  .hero__stats {
    flex-direction: column;
    gap: 20px;
  }
}