/* styles.css — Estilos principales */

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */
:root {
  /* Colores de fondo */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1c1c1c;

  /* Colores de acento */
  --color-accent-yellow: #facc15;
  --color-accent-amber: #f59e0b;
  --color-accent-warm: #d97706;

  /* Gradientes de acento */
  --gradient-accent: linear-gradient(135deg, var(--color-accent-yellow), var(--color-accent-amber));
  --gradient-accent-hover: linear-gradient(135deg, var(--color-accent-amber), var(--color-accent-warm));

  /* Colores de texto */
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #737373;

  /* Colores de borde */
  --color-border: #262626;

  /* Tipografía */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', 'Courier New', monospace;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  --line-height-tight: 1.2;
  --line-height-base: 1.6;
  --line-height-relaxed: 1.8;

  /* Espaciado */
  --spacing-section: 6rem;
  --container-max-width: 1100px;
  --container-padding: 1.5rem;

  /* Transiciones */
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Bordes */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* ========================================
   Tipografía Base
   ======================================== */
body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-display: swap;
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  font-weight: 700;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-xl); }

p {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--color-accent-yellow);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-accent-amber);
}

a:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
}

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

ul, ol {
  list-style: none;
}

/* ========================================
   Layout: Section Container
   ======================================== */
.section-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

section {
  padding: var(--spacing-section) 0;
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: 2.5rem;
  text-align: center;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ========================================
   Botones
   ======================================== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #0a0a0a;
  border-color: transparent;
}

.btn-primary:hover {
  background: var(--gradient-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(250, 204, 21, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent-yellow);
  border-color: var(--color-accent-yellow);
}

.btn-secondary:hover {
  background: rgba(250, 204, 21, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(250, 204, 21, 0.2);
}

/* ========================================
   Hero Section
   ======================================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  padding: 0 var(--container-padding);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  line-height: var(--line-height-relaxed);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Animated gradient background */
.hero-bg-effect {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    -45deg,
    #0a0a0a,
    #111111,
    #0d0d0d,
    #141414
  );
  background-size: 400% 400%;
  animation: heroGradient 15s ease infinite;
}

@keyframes heroGradient {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ========================================
   About Section
   ======================================== */
#about {
  background-color: var(--color-bg-secondary);
}

.about-text {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

/* ========================================
   Interactive Terminal Section
   ======================================== */
#interactive {
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
}

.terminal-window {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background-color: var(--color-bg-primary);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Terminal header with traffic-light dots */
.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background-color: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.terminal-dot.red {
  background-color: #ef4444;
}

.terminal-dot.yellow {
  background-color: #eab308;
}

.terminal-dot.green {
  background-color: #22c55e;
}

.terminal-title {
  margin-left: 0.5rem;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Terminal body (output area) */
.terminal-body {
  padding: 1rem 1.25rem;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  min-height: 200px;
  max-height: 360px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.terminal-body::-webkit-scrollbar {
  width: 6px;
}

.terminal-body::-webkit-scrollbar-track {
  background: transparent;
}

.terminal-body::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 3px;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
  background-color: var(--color-text-muted);
}

/* Terminal input line */
.terminal-input-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-primary);
}

.terminal-prompt {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-accent-yellow);
  white-space: nowrap;
  flex-shrink: 0;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  caret-color: var(--color-accent-yellow);
}

.terminal-input:focus-visible {
  outline: none;
}

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

/* Noscript fallback */
.terminal-noscript {
  text-align: center;
  margin-top: 1.5rem;
  padding: 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  border-radius: var(--border-radius-md);
}

/* ========================================
   Footer
   ======================================== */
#footer {
  background-color: var(--color-bg-tertiary);
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
}

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.footer-link {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-accent-yellow);
  transition: color var(--transition-base);
}

.footer-link:hover {
  color: var(--color-accent-amber);
}

.footer-link:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
}

.footer-domain {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* Enlaces legales (Privacidad / Términos) */
.footer-legal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  margin-top: 0.5rem;
}

.footer-legal-link {
  font-size: var(--font-size-sm);
  color: var(--color-accent-yellow);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-legal-link:hover {
  color: var(--color-accent-amber);
}

.footer-legal-link:focus-visible {
  outline: 2px solid var(--color-accent-yellow);
  outline-offset: 2px;
}

.footer-legal-sep {
  display: none;
}

.footer-signature {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* Desktop: enlaces legales en fila con separador */
@media (min-width: 768px) {
  .footer-legal {
    flex-direction: row;
    gap: 0.5rem;
  }

  .footer-legal-sep {
    display: inline;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
  }
}