/* ═══════════════════════════════════════════════════════════
   GRUPO ALTURA — Design Tokens & Base Styles
   ═══════════════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
  /* Colors — Light Theme */
  --color-bg:             #FFFFFF;
  --color-bg-nav:         #FFFFFF;
  --color-bg-elevated:    #F0F4F8;
  --color-bg-card:        rgba(240, 244, 248, 0.85);
  --color-surface:        #E8EDF3;

  --color-primary:        #0B2447;
  --color-primary-light:  #1A3A6B;
  --color-accent:         #2563EB;
  --color-accent-warm:    #D97706;
  --color-success:        #059669;
  --color-pink:           #DB2777;
  --color-purple:         #7C3AED;

  --color-text:           #0F172A;
  --color-text-muted:     #475569;
  --color-text-dim:       #6B7A8D;

  --color-border:         rgba(15, 23, 42, 0.12);
  --color-glow:           rgba(11, 36, 71, 0.15);
  --color-glass:          rgba(15, 23, 42, 0.04);
  --color-glass-border:   rgba(15, 23, 42, 0.12);

  /* Typography */
  --font-display:  'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:     'Space Mono', monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 100px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease-out:      cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:   cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast:  150ms;
  --duration-base:  250ms;
  --duration-slow:  400ms;
  --transition-fast:  var(--duration-fast) var(--ease-out);
  --transition-base:  var(--duration-base) var(--ease-out);
  --transition-slow:  var(--duration-slow) var(--ease-spring);
}


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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-display);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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


/* ── Canvas Background ── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px;
}


/* ── Layout ── */
.page-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}


/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  background: var(--color-bg-nav);
  border-bottom: 1px solid var(--color-glass-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: background var(--transition-base);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav__logo img {
  height: 59px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav__links > li {
  position: relative;
}

.nav__links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  cursor: pointer;
}

.nav__dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav__dropdown-toggle svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--transition-fast);
}

.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 290px;
  max-width: min(92vw, 340px);
  margin: 0;
  padding: 10px 0;
  list-style: none;
  border: 1px solid var(--color-glass-border);
  border-radius: 12px;
  background: var(--color-bg-nav);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  pointer-events: none;
  z-index: 130;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav__dropdown-menu::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -10px;
  height: 10px;
}

.nav__dropdown-menu li + li {
  border-top: 1px solid rgba(15, 23, 42, 0.06);
}

.nav__dropdown-menu a {
  display: block;
  padding: 10px 16px;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.4;
  white-space: normal;
}

.nav__dropdown-menu a:hover {
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.04);
}

.nav__dropdown:hover .nav__dropdown-menu,
.nav__dropdown:focus-within .nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav__dropdown:hover .nav__dropdown-toggle svg,
.nav__dropdown:focus-within .nav__dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.92rem;
  line-height: 1;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.nav__cta:hover {
  background: var(--color-primary-light);
  box-shadow: 0 0 30px var(--color-glow);
}

/* ── Mobile Menu Toggle ── */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition-fast);
  border-radius: 2px;
}


/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 30px;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  border: none;
}

.btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

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

.btn--ghost:hover {
  background: rgba(15, 23, 42, 0.06);
  border-color: rgba(15, 23, 42, 0.15);
}

.btn__icon {
  width: 18px;
  height: 18px;
}


/* ── Section Primitives ── */
.section {
  padding: var(--space-4xl) 0;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}

.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.section__desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: var(--space-3xl);
}


/* ── SVG Icon Helper ── */
.icon-svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}


/* ── Tech Stack Tags ── */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--space-xl);
}

.tech-tag {
  padding: 6px 14px;
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}


/* ── Footer ── */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--color-glass-border);
}

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

.footer__copy {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
  list-style: none;
}

.footer__links a {
  font-size: 0.82rem;
  color: var(--color-text-dim);
  text-decoration: none;
  transition: color var(--transition-fast);
  cursor: pointer;
}

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

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}

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


/* ── Responsive ── */
@media (max-width: 768px) {
  html, body, .page-content {
    overflow-x: hidden;
  }

  body {
    background:
      radial-gradient(120% 90% at 20% -10%, rgba(11, 36, 71, 0.04), transparent 56%),
      radial-gradient(110% 80% at 100% 100%, rgba(37, 99, 235, 0.04), transparent 52%),
      #FFFFFF;
  }

  #bg-canvas {
    display: none;
  }

  .nav__inner { position: relative; }

  .container {
    width: 100%;
    max-width: 100%;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .nav__cta { display: none; }

  .nav__logo img { height: 48px; }

  .nav__links {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg-nav);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-md);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
  }

  .nav--open .nav__links { display: flex; }

  .nav__links > li + li { border-top: 1px solid var(--color-glass-border); }

  .nav__links > li > a {
    display: block;
    padding: 14px var(--space-lg);
  }

  .nav__dropdown-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .nav__dropdown-toggle svg {
    transform: rotate(180deg);
  }

  .nav__dropdown-menu {
    position: static;
    min-width: 0;
    margin: 0;
    padding: 0 0 8px;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .nav__dropdown-menu::before {
    display: none;
  }

  .nav__dropdown-menu li + li {
    border-top: 1px solid rgba(15, 23, 42, 0.06);
  }

  .nav__dropdown-menu a {
    padding: 10px calc(var(--space-lg) + 20px);
    font-size: 0.82rem;
    color: var(--color-text-dim);
    white-space: normal;
  }

  .nav__toggle { display: block; }

  .nav--open .nav__toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .nav--open .nav__toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .section { padding: 72px 0; }
  .footer__inner {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}

@media (max-width: 375px) {
  html { font-size: 15px; }
}


/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #bg-canvas { display: none; }
}