/* ============================================
   INVERSO PROJECT - Styles
   ============================================ */

/* --- Variables --- */
:root {
  /* Paleta principal */
  --purple-smoke: #5E4B56;
  --charcoal: #2A2629;
  --dusty-mauve: #7D6B75;
  --onyx: #35313A;
  --ink-black: #1A1718;

  /* Fondos y textos */
  --bg-light: #F9F8F7;
  --bg-white: #FFFFFF;
  --text-primary: #1A1718;
  --text-secondary: #5E4B56;
  --text-muted: #7D6B75;

  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;

  /* Tipografía */
  --font-body: 'Space Grotesk', -apple-system, sans-serif;
  --font-display: 'Syne', 'Space Grotesk', sans-serif;

  /* Bordes y sombras */
  --border-width: 3px;
  --shadow-brutal: 8px 8px 0px var(--ink-black);
  --shadow-brutal-sm: 4px 4px 0px var(--ink-black);
  --shadow-purple: 8px 8px 0px var(--purple-smoke);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- Particles Background --- */
#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--bg-light);
}

/* --- Layout --- */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* --- Navegación Lateral --- */
.nav-sidebar {
  width: 80px;
  border-right: var(--border-width) solid var(--ink-black);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) 0;
  background: var(--bg-white);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  letter-spacing: -0.05em;
  margin-bottom: auto;
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: auto;
}

.nav-link {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--ink-black);
  background: var(--bg-white);
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-link:hover {
  background: var(--bg-light);
  transform: translateX(-4px);
}

.nav-link.active {
  background: var(--purple-smoke);
  color: white;
  transform: translateX(-4px);
}

.nav-link svg {
  width: 24px;
  height: 24px;
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: 80px;
  margin-right: 320px;
  padding: var(--space-2xl);
  min-height: 100vh;
}

/* --- Sidebar Derecho (Tareas) --- */
.tasks-sidebar {
  width: 320px;
  border-left: var(--border-width) solid var(--ink-black);
  padding: var(--space-lg);
  background: var(--bg-white);
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.tasks-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.task-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs);
  transition: opacity 0.2s, transform 0.3s ease;
}

.task-item.completed {
  opacity: 0.5;
  text-decoration: line-through;
}

.task-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--ink-black);
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.task-item.completed .task-checkbox {
  background: var(--purple-smoke);
  color: white;
}

.task-label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

/* --- Impact Card --- */
.impact-card {
  background: var(--purple-smoke);
  color: white;
  padding: var(--space-md);
  border: 2px solid var(--ink-black);
  box-shadow: var(--shadow-brutal-sm);
}

.impact-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  text-transform: uppercase;
  line-height: 1.1;
}

.impact-subtitle {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.7;
  margin-top: var(--space-xs);
}

.impact-value {
  font-size: 2rem;
  font-weight: 700;
  margin-top: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.impact-global {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.2);
  font-size: 0.7rem;
  text-transform: uppercase;
}

/* --- Typography Hierarchy --- */

/* Level 1: Main page title (THINK 4D) */
.display-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.display-title .accent {
  color: var(--purple-smoke);
}

/* Level 2: Page subtitle / description */
.subtitle {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-muted);
  max-width: 600px;
  margin-top: var(--space-sm);
  line-height: 1.5;
}

/* Level 3: Section titles (Últimos Ensayos, etc) */
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 3px solid var(--ink-black);
}

.section-title .accent {
  color: var(--purple-smoke);
}

/* Level 4: Card titles */
.card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  line-height: 1.1;
}

/* Level 5: Subsection labels */
.label-text {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

/* Question prompt (¿Qué hacemos hoy?) */
.question-prompt {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.question-prompt::before {
  content: "→";
  color: var(--purple-smoke);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border: 2px solid var(--ink-black);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--purple-smoke);
  color: white;
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-brutal-sm);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-light);
}

.btn-dark {
  background: var(--ink-black);
  color: white;
}

.btn-dark:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px var(--purple-smoke);
}

/* --- Cards --- */
.card {
  background: var(--bg-white);
  border: var(--border-width) solid var(--ink-black);
  padding: var(--space-lg);
}

.card-brutal {
  box-shadow: var(--shadow-brutal);
}

.card-purple {
  box-shadow: var(--shadow-purple);
}

.card-dark {
  background: var(--ink-black);
  color: white;
}

.card-accent {
  background: var(--dusty-mauve);
  color: white;
}

/* --- Landing Page --- */
.landing-hero {
  margin-bottom: var(--space-2xl);
}

.landing-question {
  margin-top: var(--space-xl);
}

.question-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.question-text::before {
  content: "→";
  color: var(--purple-smoke);
  font-size: 1.5rem;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.option-card {
  padding: var(--space-lg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.option-card:hover {
  transform: translate(-4px, -4px);
}

.option-card h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.option-card p {
  font-size: 0.9rem;
  opacity: 0.8;
}

/* --- Essays Grid --- */
.essays-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.essay-card {
  cursor: pointer;
  transition: all 0.2s ease;
}

.essay-card:hover {
  transform: translate(-4px, -4px);
}

.essay-card.featured {
  grid-column: span 2;
}

.essay-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.5rem;
  background: var(--purple-smoke);
  color: white;
  margin-right: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.essay-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  margin: var(--space-sm) 0;
  line-height: 1.1;
}

.essay-synopsis {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.essay-date {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: var(--space-md);
}

/* --- Axiom Banner --- */
.axiom-banner {
  padding: var(--space-xl);
  margin: var(--space-2xl) 0;
  text-align: center;
}

.axiom-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  font-style: italic;
}

.axiom-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  opacity: 0.6;
  margin-top: var(--space-md);
}

/* --- Page Content --- */
.page {
  display: none;
  animation: fadeIn 0.3s ease;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- About Page --- */
.about-section {
  margin-bottom: var(--space-xl);
}

.about-section h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  color: var(--purple-smoke);
}

.about-section p {
  font-size: 1rem;
  line-height: 1.7;
}

/* --- Essay Reader --- */
.essay-reader {
  max-width: 700px;
}

.essay-reader-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  cursor: pointer;
  color: var(--text-muted);
}

.essay-reader-back:hover {
  color: var(--purple-smoke);
}

.essay-reader-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  text-transform: uppercase;
  line-height: 1;
  margin-bottom: var(--space-lg);
}

.essay-reader-content {
  font-size: 1.1rem;
  line-height: 1.8;
}

.essay-reader-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.essay-reader-content blockquote {
  border-left: 4px solid var(--purple-smoke);
  padding-left: var(--space-md);
  font-style: italic;
  color: var(--text-muted);
  margin: var(--space-lg) 0;
}

/* --- Test/Survey --- */
.test-container {
  max-width: 600px;
}

.test-question {
  margin-bottom: var(--space-xl);
}

.test-question-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.test-options {
  display: flex;
  gap: var(--space-md);
}

.test-option {
  flex: 1;
  padding: var(--space-md);
  text-align: center;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.test-option:hover {
  transform: translateY(-2px);
}

.test-progress {
  height: 4px;
  background: var(--bg-light);
  border: 1px solid var(--ink-black);
  margin-bottom: var(--space-xl);
}

.test-progress-bar {
  height: 100%;
  background: var(--purple-smoke);
  transition: width 0.3s ease;
}

/* --- GoFundMe Section --- */
.gofundme-section {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  text-align: center;
}

.gofundme-section h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.gofundme-embed {
  margin-top: var(--space-lg);
  min-height: 400px;
  border: 2px dashed var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* --- Responsive --- */
@media (max-width: 1200px) {
  .tasks-sidebar {
    display: none;
  }

  .main-content {
    margin-right: 0;
  }
}

@media (max-width: 768px) {
  .nav-sidebar {
    width: 60px;
  }

  .nav-logo {
    font-size: 1rem;
  }

  .main-content {
    margin-left: 60px;
    padding: var(--space-lg);
  }

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

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

  .essay-card.featured {
    grid-column: span 1;
  }
}

/* --- Cookie Banner --- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink-black);
  color: white;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.cookie-banner.visible {
  transform: translateY(0);
}

.cookie-banner p {
  font-size: 0.85rem;
  flex: 1;
}

.cookie-banner a {
  color: var(--dusty-mauve);
}

.cookie-buttons {
  display: flex;
  gap: var(--space-sm);
}

/* --- Utilities --- */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }