/* =========================================================
   Sistema de diseño — Portfolio de Ciberseguridad (Rafa Tocino)
   Único punto de verdad para estilos. Tema vía [data-theme].
   ========================================================= */

:root {
  /* Paleta morada (tema claro por defecto) */
  --color-primary: #6200ea;
  --color-primary-strong: #4a00b0;
  --color-accent: #7c4dff;
  --color-bg: #f4f2fb;
  --color-surface: #ffffff;
  --color-surface-alt: #efeaf9;
  --color-text: #1f1b2e;
  --color-text-muted: #5a5470;
  --color-border: #e0d8f3;
  --color-on-primary: #ffffff;

  /* Niveles de dificultad */
  --diff-easy: #2e9e5b;
  --diff-medium: #d98a00;
  --diff-hard: #d23c3c;

  /* Acentos "terminal/cyber" (estética hacker) */
  --font-mono: "JetBrains Mono", "Courier New", monospace;
  --cyber-green: #00a37a;
  --cyber-green-dim: rgba(0, 163, 122, 0.12);
  --glow: none;

  /* Tipografía */
  --font-base: "Roboto", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  --fs-300: 0.875rem;
  --fs-400: 1rem;
  --fs-500: 1.25rem;
  --fs-600: 1.5rem;
  --fs-700: 2rem;
  --lh-base: 1.6;

  /* Espaciado */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  /* Formas y efectos */
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 6px rgba(31, 27, 46, 0.08);
  --shadow-md: 0 8px 20px rgba(31, 27, 46, 0.12);
  --stripe-height: 60px;
  --transition: 0.25s ease;
  --max-width: 1200px;
}

[data-theme="dark"] {
  --color-primary: #bb86fc;
  --color-primary-strong: #9a67ea;
  --color-accent: #cfa9ff;
  --color-bg: #121019;
  --color-surface: #1d1a27;
  --color-surface-alt: #262135;
  --color-text: #f3f0fa;
  --color-text-muted: #b6aecd;
  --color-border: #332b47;
  --color-on-primary: #1a1430;

  --diff-easy: #46c178;
  --diff-medium: #f0b44a;
  --diff-hard: #ef6e6e;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.5);

  --cyber-green: #00e5a0;
  --cyber-green-dim: rgba(0, 229, 160, 0.15);
  --glow: 0 0 14px rgba(187, 134, 252, 0.35);
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-base);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: background-color var(--transition), color var(--transition);
}

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

a:hover {
  text-decoration: underline;
}

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

h1,
h2,
h3 {
  line-height: 1.25;
}

/* Foco visible y accesible en todo elemento interactivo */
a:focus-visible,
button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Enlace de salto para teclado/lectores */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-2) var(--space-4);
  z-index: 200;
}
.skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
}

/* ---------- Cabecera ---------- */
.site-header {
  min-height: var(--stripe-height);
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-5);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__title {
  margin: 0;
  font-size: var(--fs-500);
  font-weight: 500;
}

.site-header__spacer {
  flex: 1;
}

.back-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-on-primary);
  border-radius: 50%;
  color: var(--color-on-primary);
  font-size: 1.4rem;
  text-decoration: none;
  transition: transform var(--transition), background-color var(--transition), color var(--transition);
}
.back-link:hover {
  background-color: var(--color-on-primary);
  color: var(--color-primary);
  text-decoration: none;
  transform: scale(1.05);
}

.theme-toggle {
  background: transparent;
  border: 2px solid var(--color-on-primary);
  color: var(--color-on-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background-color var(--transition);
}
.theme-toggle:hover {
  transform: scale(1.05);
  background-color: rgba(255, 255, 255, 0.15);
}

/* ---------- Layout principal ---------- */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: var(--space-6) auto;
  flex: 1;
}

/* Cuadrícula de la portada: 3 columnas */
.home-grid {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(320px, 2fr) minmax(200px, 1fr);
  gap: var(--space-5);
  align-items: start;
}

/* ---------- Tarjeta de perfil ---------- */
.profile-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.profile-card h1 {
  margin: var(--space-3) 0 var(--space-1);
  font-size: var(--fs-600);
}

.profile-image {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto;
  border: 3px solid var(--color-primary);
}

.job-title {
  color: var(--color-primary);
  font-weight: 500;
  margin: 0 0 var(--space-4);
}

.social-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: background-color var(--transition);
}
.social-links a:hover {
  background-color: var(--color-surface-alt);
  text-decoration: none;
}
.social-links img {
  width: 20px;
  height: 20px;
}

/* ---------- Buscador ---------- */
.search-container {
  display: flex;
  margin-bottom: var(--space-5);
}

.search-container input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-400);
  border: 2px solid var(--color-primary);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-text);
}
.search-container input::placeholder {
  color: var(--color-text-muted);
}

.search-container button {
  border: none;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  padding: 0 var(--space-4);
  font-size: var(--fs-400);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  transition: background-color var(--transition);
}
.search-container button:hover {
  background-color: var(--color-primary-strong);
}

/* ---------- Secciones / títulos ---------- */
.section-title {
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-2);
  margin-top: 0;
  font-size: var(--fs-600);
}

/* ---------- Tarjetas de máquina ---------- */
.machines-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
}

.machine {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-5);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.machine:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.machine h3 {
  margin-top: 0;
  color: var(--color-primary);
}
.machine p {
  margin: var(--space-2) 0;
}

/* Dificultad: etiqueta textual + barra accesible */
.difficulty {
  margin: var(--space-3) 0;
}
.difficulty__badge {
  display: inline-block;
  font-size: var(--fs-300);
  font-weight: 600;
  padding: 2px var(--space-3);
  border-radius: 999px;
  color: #fff;
  margin-bottom: var(--space-2);
}
/* Fondos sólidos oscuros: texto blanco con contraste AA en ambos temas */
.difficulty--easy .difficulty__badge {
  background-color: #1c7a43;
}
.difficulty--medium .difficulty__badge {
  background-color: #8a5200;
}
.difficulty--hard .difficulty__badge {
  background-color: #b02a2a;
}
.difficulty__bar {
  height: 8px;
  border-radius: 999px;
  background-color: var(--color-surface-alt);
  overflow: hidden;
}
.difficulty__fill {
  height: 100%;
  border-radius: 999px;
}
.difficulty--easy .difficulty__fill {
  width: 33%;
  background-color: var(--diff-easy);
}
.difficulty--medium .difficulty__fill {
  width: 66%;
  background-color: var(--diff-medium);
}
.difficulty--hard .difficulty__fill {
  width: 100%;
  background-color: var(--diff-hard);
}

/* Estado "sin resultados" */
.no-results {
  padding: var(--space-5);
  background-color: var(--color-surface-alt);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  text-align: center;
}
[hidden] {
  display: none !important;
}

/* ---------- Navegación de asignaturas ---------- */
.subjects-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.subjects-nav li {
  margin-bottom: var(--space-2);
}
.subjects-nav a {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
}
.subjects-nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  text-decoration: none;
  transform: translateX(4px);
}
.subjects-nav .soon {
  font-size: var(--fs-300);
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}
.subjects-nav a:hover .soon {
  color: inherit;
}

/* ---------- Listado de proyectos (subpáginas) ---------- */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}
.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-5);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  color: inherit;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.project-card h2,
.project-card h3 {
  margin-top: 0;
  color: var(--color-primary);
}
.project-card .description {
  color: var(--color-text-muted);
}

/* ---------- Página de contenido genérica ---------- */
.page {
  max-width: 760px;
}
.page p {
  color: var(--color-text);
}
.placeholder {
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-7) var(--space-5);
  text-align: center;
  color: var(--color-text-muted);
}
.placeholder .emoji {
  font-size: 2.5rem;
}

/* Contacto */
.contact-list {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0;
}
.contact-list li {
  margin-bottom: var(--space-3);
}
.contact-list a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.contact-list a:hover {
  background-color: var(--color-surface-alt);
  text-decoration: none;
}

/* ---------- Pie ---------- */
.site-footer {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  text-align: center;
  padding: var(--space-4);
  margin-top: var(--space-7);
}
.site-footer p {
  margin: 0;
}

/* ---------- Animaciones ---------- */
@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.machine,
.project-card {
  animation: fade-in 0.4s ease both;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .home-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    width: 94%;
    margin: var(--space-5) auto;
  }
  .site-header {
    padding: var(--space-2) var(--space-3);
  }
  .site-header__title {
    font-size: var(--fs-400);
  }
}

/* =========================================================
   Estética "terminal / cyber" (integrada de "My existence")
   ========================================================= */

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Prompt de terminal en la cabecera */
.terminal-prompt {
  font-family: var(--font-mono);
  font-size: var(--fs-300);
  color: var(--color-on-primary);
  letter-spacing: 0.04em;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.term-cursor {
  animation: blink 1s step-end infinite;
}
@media (prefers-reduced-motion: reduce) {
  .term-cursor, .typing-cursor { animation: none; }
}

/* Título con efecto "typing" */
.job-title.typing {
  font-family: var(--font-mono);
  font-size: var(--fs-300);
  min-height: 1.5em;
  letter-spacing: 0.02em;
}
.typing-cursor {
  animation: blink 0.8s step-end infinite;
  color: var(--color-primary);
}
[data-theme="dark"] .job-title.typing,
[data-theme="dark"] .typing-cursor {
  color: var(--cyber-green);
}

/* Etiquetas de especialidad */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin: var(--space-2) 0 var(--space-4);
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 9px;
  border-radius: 20px;
  background-color: var(--cyber-green-dim);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .skill-tag {
  color: var(--cyber-green);
  border-color: rgba(0, 229, 160, 0.3);
}

/* Acentos en modo oscuro */
[data-theme="dark"] .profile-card,
[data-theme="dark"] .machine,
[data-theme="dark"] .project-card {
  box-shadow: var(--glow);
}
[data-theme="dark"] .profile-image {
  box-shadow: 0 0 20px rgba(187, 134, 252, 0.3);
}

/* Iconos en la navegación de asignaturas */
.nav-icon {
  margin-right: var(--space-2);
  flex-shrink: 0;
}
.subjects-nav a {
  display: flex;
  align-items: center;
}

/* Tarjetas de máquina enriquecidas */
.machine-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.machine-header h3 {
  margin: 0;
}
.platform-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  flex-shrink: 0;
}

.machine-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-3) 0;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  padding: 2px 8px;
  border-radius: 3px;
  background-color: var(--color-surface-alt);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .tag {
  background-color: var(--cyber-green-dim);
  color: var(--cyber-green);
  border-color: rgba(0, 229, 160, 0.2);
}

.machine-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.btn-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 5px;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition);
}
.btn-link:hover {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  text-decoration: none;
}

@media (max-width: 480px) {
  .terminal-prompt {
    font-size: 0.72rem;
    max-width: 40vw;
  }
}

/* =========================================================
   Páginas de contenido (Incidentes, Normativas, Producción)
   ========================================================= */
.page.wide {
  max-width: var(--max-width);
}
.lead {
  font-size: 1.05rem;
  color: var(--color-text);
  margin: var(--space-3) 0 var(--space-6);
  max-width: 70ch;
}

/* Tarjeta informativa (no enlazable) */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
  margin: var(--space-4) 0 var(--space-6);
}
.info-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .info-card {
  box-shadow: var(--glow);
}
.info-card h3 {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  font-size: var(--fs-500);
}
.info-card p {
  margin: 0 0 var(--space-3);
  color: var(--color-text-muted);
}

/* Lista de fases numerada (ciclo de respuesta a incidentes) */
.steps {
  list-style: none;
  counter-reset: step;
  margin: var(--space-4) 0 var(--space-6);
  padding: 0;
  display: grid;
  gap: var(--space-3);
}
.steps li {
  counter-increment: step;
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-7) + var(--space-2));
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps strong {
  color: var(--color-primary);
}