/* ============================================
   Ativiza — Landing (mobile-first, light theme)
   ============================================ */

:root {
  /* Colors — light theme */
  --bg: #fafbfc;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --surface: #f1f5f9;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --text-muted: #475569;
  --text-soft: #64748b;
  --accent: #0d9488;
  --accent-light: #14b8a6;
  --accent-dim: rgba(13, 148, 136, 0.1);
  --accent-glow: rgba(13, 148, 136, 0.2);
  --icon-muted: #64748b;
  --success: #059669;
  --warning: #d97706;
  --gradient-hero: linear-gradient(160deg, #f0fdfa 0%, #fafbfc 45%, #f1f5f9 100%);
  --gradient-accent: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1);
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
  /* Typography */
  --font-sans: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', var(--font-sans);
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --leading-tight: 1.2;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  /* Layout */
  --container: min(100% - 2rem, 72rem);
  --header-h: 4rem;
  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration: 0.4s;
  --duration-slow: 0.6s;
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: 0.375rem;
  transition: top var(--duration) var(--ease-out);
}
.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Icons */
.icon { display: block; flex-shrink: 0; }
.icon-wrap { display: inline-flex; align-items: center; justify-content: center; color: var(--icon-muted); transition: color var(--duration); }
.problem-item:hover .icon-wrap,
.goal-card:hover .icon-wrap,
.feature-item:hover .icon-wrap { color: var(--accent); }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-0.5rem); }
}

.animate-in {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}
.animate-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.hero-inner .animate-in:nth-child(1) { transition-delay: 0.05s; }
.hero-inner .animate-in:nth-child(2) { transition-delay: 0.1s; }
.hero-inner .animate-in:nth-child(3) { transition-delay: 0.15s; }
.hero-inner .animate-in:nth-child(4) { transition-delay: 0.2s; }
.hero-inner .animate-in:nth-child(5) { transition-delay: 0.25s; }
.hero-inner .animate-in:nth-child(6) { transition-delay: 0.3s; }
.hero-inner .animate-in:nth-child(7) { transition-delay: 0.35s; }
.hero-inner .animate-in:nth-child(8) { transition-delay: 0.4s; }
.hero-inner .animate-in:nth-child(9) { transition-delay: 0.45s; }
.hero-inner .animate-in:nth-child(10) { transition-delay: 0.5s; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(250, 251, 252, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--duration) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
}
.logo-img {
  width: 7.5rem;
  height: auto;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: var(--space-2);
  color: var(--text);
  border-radius: 0.375rem;
  transition: background var(--duration);
}
.nav-toggle:hover { background: var(--surface); }
.nav-toggle-bar {
  width: 1.25rem;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--duration) var(--ease-out);
}
.nav.is-open + .header-actions .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open + .header-actions .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav.is-open + .header-actions .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* When nav is open, the toggle is inside header-actions - actually no, the order is: logo, toggle, nav, actions. So when nav is open we need to target the toggle. The toggle is BEFORE nav in DOM. Let me check HTML order again. */
/* Order: logo, nav-toggle, nav, header-actions. So we need .nav-toggle when .nav.is-open. We can do .nav.is-open ~ .header-actions .nav-toggle doesn't exist - header-actions is after nav. So when nav is open, we need to style the toggle. So add class to body or use .nav.is-open and then we need the toggle to be a sibling. So when nav has is-open, the toggle is before nav. So we need .header:has(.nav.is-open) .nav-toggle .nav-toggle-bar. */
.header:has(.nav.is-open) .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header:has(.nav.is-open) .nav-toggle-bar:nth-child(2) { opacity: 0; }
.header:has(.nav.is-open) .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: opacity var(--duration) var(--ease-out), visibility var(--duration), transform var(--duration) var(--ease-out);
}
.nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-list { display: flex; flex-direction: column; gap: 0; }
.nav-list li { border-bottom: 1px solid var(--border); }
.nav-list li:last-child { border-bottom: none; }
.nav-link { display: block; padding: var(--space-3) 0; }
.header-actions { display: flex; align-items: center; gap: var(--space-3); }
.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--duration);
}
.nav-link:hover { color: var(--text); }

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  transition: color var(--duration), border-color var(--duration), background var(--duration);
}
.lang-toggle:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-dim);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-h);
  padding-bottom: var(--space-16);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  background-image: url('public/assets/ativiza-hero.png');
  background-size: cover;
  background-position: center;
  pointer-events: none;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(250, 251, 252, 0.92) 0%, rgba(250, 251, 252, 0.88) 50%, rgba(241, 245, 249, 0.95) 100%);
  pointer-events: none;
}
.hero-bg::after {
  content: '';
  position: absolute;
  top: -30%;
  left: -20%;
  width: 140%;
  height: 80%;
  background: radial-gradient(ellipse 70% 60% at 50% 0%, var(--accent-dim) 0%, transparent 55%);
  pointer-events: none;
}

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

.hero-badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(13, 148, 136, 0.25);
  border-radius: 9999px;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
}

.hero-title-line {
  display: block;
}
.hero-title-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 32rem;
  margin: 0 auto var(--space-8);
  line-height: var(--leading-snug);
}

.hero-cta { margin-bottom: var(--space-12); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: 0.5rem;
  transition: transform var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out), opacity var(--duration);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.7; cursor: not-allowed; transform: none; }

.btn-primary {
  color: #fff;
  background: var(--gradient-accent);
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover { box-shadow: 0 6px 20px var(--accent-glow); }

/* Carousel preview */
.section-preview { background: var(--bg-elevated); }
.carousel {
  position: relative;
  max-width: 22rem;
  margin: var(--space-10) auto 0;
  padding-inline: 3rem;
}
.carousel-viewport {
  overflow: hidden;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  background: var(--bg-card);
}
.carousel-track {
  display: flex;
  transition: transform var(--duration-slow) var(--ease-out);
}
.carousel-slide {
  flex: 0 0 100%;
  margin: 0;
  min-width: 0;
}
.carousel-slide img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 9 / 16;
  object-fit: cover;
}
.carousel-slide figcaption {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  text-align: center;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: color var(--duration), background var(--duration), border-color var(--duration);
}
.carousel-btn:hover {
  color: var(--accent);
  background: var(--bg-card);
  border-color: var(--accent);
}
.carousel-btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.carousel-prev { left: -0.75rem; }
.carousel-next { right: -0.75rem; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.carousel-dot {
  width: 0.5rem;
  height: 0.5rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--text-soft);
  opacity: 0.5;
  transition: opacity var(--duration), background var(--duration), transform var(--duration);
}
.carousel-dot:hover { opacity: 0.8; }
.carousel-dot[aria-selected="true"] {
  opacity: 1;
  background: var(--accent);
  transform: scale(1.2);
}
.carousel-dot:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--accent-dim);
}

/* Sections */
.section {
  padding: var(--space-16) 0;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-4);
  text-align: center;
}
.section-lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 40rem;
  margin: 0 auto var(--space-10);
  text-align: center;
  line-height: var(--leading-snug);
}

/* Problem */
.section-problem { background: var(--surface); }
.problem-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 36rem;
  margin: 0 auto var(--space-8);
}
.problem-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: var(--text-sm);
  color: var(--text-muted);
  transition: border-color var(--duration), color var(--duration);
}
.problem-item:hover {
  border-color: rgba(239, 68, 68, 0.25);
  color: var(--text);
  background: var(--bg-elevated);
}
.problem-icon { flex-shrink: 0; }
.problem-note {
  font-size: var(--text-sm);
  color: var(--text-soft);
  text-align: center;
  max-width: 32rem;
  margin: 0 auto;
}

/* Asset types focus */
.asset-types {
  margin-top: var(--space-10);
  margin-bottom: var(--space-10);
  text-align: center;
}
.asset-types-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text);
  margin: 0 0 var(--space-6);
}
.asset-types-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  max-width: 36rem;
  margin: 0 auto;
}
.asset-type-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text);
  transition: border-color var(--duration), background var(--duration);
}
.asset-type-item:hover {
  border-color: rgba(13, 148, 136, 0.3);
  background: var(--bg-elevated);
}
.asset-type-icon {
  flex-shrink: 0;
  color: var(--accent);
}

/* Solution / Goals */
.goals {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}
.goal-card {
  position: relative;
  padding: var(--space-6);
  padding-top: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--duration), transform var(--duration) var(--ease-out), box-shadow var(--duration);
}
.goal-card:hover {
  border-color: rgba(13, 148, 136, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.goal-icon {
  position: absolute;
  top: var(--space-4);
  left: var(--space-6);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}
.goal-num {
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--accent);
  opacity: 0.5;
}
.goal-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  margin: 1.25rem 0 var(--space-2) 0;
  color: var(--text);
}
.goal-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0;
  line-height: var(--leading-snug);
}

/* Features */
.section-features { background: var(--surface); }
.features-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-10);
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  transition: border-color var(--duration), background var(--duration);
}
.feature-item:hover {
  border-color: rgba(13, 148, 136, 0.25);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
}
.feature-icon { flex-shrink: 0; }
.feature-item h3,
.feature-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  margin: 0;
  color: var(--text);
}
.feature-content { flex: 1; min-width: 0; }
.feature-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: var(--space-2) 0 0;
  line-height: var(--leading-snug);
}
.feature-item-highlight {
  border-color: rgba(13, 148, 136, 0.2);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(13, 148, 136, 0.04) 100%);
}
.feature-item-highlight:hover {
  border-color: rgba(13, 148, 136, 0.35);
}
.feature-item-highlight .feature-icon { color: var(--accent); }

/* Footer */
.footer {
  padding: var(--space-10) 0;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}
.footer-logo { opacity: 0.9; }
.footer-tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0;
}
.footer-copy {
  font-size: var(--text-xs);
  color: var(--text-soft);
  margin: 0;
}

/* Tablet */
@media (min-width: 640px) {
  .nav-toggle { display: none; }
  .nav {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 0;
    background: transparent;
    border-bottom: none;
    box-shadow: none;
  }
  .nav-list { flex-direction: row; gap: var(--space-6); }
  .nav-list li { border-bottom: none; }
  .nav-link { padding: 0; }
  .hero-title { font-size: clamp(2rem, 6vw, 3.25rem); }
  .carousel { max-width: 26rem; }
  .asset-types-list { grid-template-columns: repeat(4, 1fr); gap: var(--space-4); max-width: none; }
  .goals { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Desktop */
@media (min-width: 1024px) {
  .section { padding: var(--space-24) 0; }
  .section-title { font-size: 2.25rem; }
  .hero-desc { font-size: 1.25rem; }
  .carousel { max-width: 28rem; }
  .goals { grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
  .goal-card:nth-child(5) { grid-column: 2 / 3; }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .animate-in { opacity: 1; transform: none; }
}