/* ============================================================
   UP STEAM! Quiz de Sostenibilidad — Estilos
   ============================================================ */

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
  --clr-bg-start: #0a1628;
  --clr-bg-end: #1a3a2a;
  --clr-glass: rgba(255, 255, 255, 0.07);
  --clr-glass-border: rgba(255, 255, 255, 0.14);
  --clr-glass-hover: rgba(255, 255, 255, 0.13);
  --clr-accent: #4ade80;
  --clr-accent-glow: rgba(74, 222, 128, 0.4);
  --clr-danger: #f87171;
  --clr-warning: #fbbf24;
  --clr-text: #f0fdf4;
  --clr-text-muted: rgba(240, 253, 244, 0.55);

  --font-display: 'Poppins', sans-serif;
  --font-body: 'Nunito', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-full: 50%;

  --transition-fast: 200ms ease;
  --transition-medium: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 700ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Tamano del planeta — controla todo el layout */
  --earth-size: 38vw;
  --earth-offset-bottom: -6vw;
  --earth-offset-right: -4vw;
  --earth-visible: calc(var(--earth-size) + var(--earth-offset-right));
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-user-select: none;
  user-select: none;
}

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  overflow: hidden;
  min-height: 100vh;
  min-height: 100dvh;
}

button {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

/* ---------- FONDO ANIMADO ---------- */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, var(--clr-bg-start) 0%, var(--clr-bg-end) 100%);
}

.bg-gradient::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 22px 22px;
  animation: drift 80s linear infinite;
}

@keyframes drift {
  from { background-position: 0 0; }
  to { background-position: 220px 220px; }
}

/* ---------- GLASSMORPHISM CARD ---------- */
.glass-card {
  background: var(--clr-glass);
  backdrop-filter: blur(22px) saturate(1.3);
  -webkit-backdrop-filter: blur(22px) saturate(1.3);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-lg);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  padding: var(--space-lg);
}

/* ---------- PLANETA TIERRA ---------- */
.earth-container {
  position: fixed;
  bottom: var(--earth-offset-bottom);
  right: var(--earth-offset-right);
  width: var(--earth-size);
  height: var(--earth-size);
  z-index: 10;
  pointer-events: none;
  transition: transform var(--transition-medium);
}

.earth-container.bounce {
  animation: earth-bounce 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes earth-bounce {
  0%   { transform: scale(1) translateY(0); }
  40%  { transform: scale(1.08) translateY(-14px); }
  100% { transform: scale(1) translateY(0); }
}

.earth-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 55%;
  clip-path: circle(48% at 50% 58%);
  -webkit-clip-path: circle(48% at 50% 58%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.earth-video.active {
  opacity: 1;
}

/* ---------- PANTALLAS (SCREENS) ---------- */
.screen {
  position: fixed;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  padding-right: calc(var(--earth-visible) + 1rem);
  padding-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.screen--active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------- PANTALLA BIENVENIDA ---------- */
.welcome-card {
  max-width: 540px;
  width: 100%;
  text-align: center;
}

.welcome-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  background: rgba(74, 222, 128, 0.12);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 100px;
  padding: 0.35em 1.2em;
  margin-bottom: var(--space-md);
}

.welcome-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--clr-text) 30%, var(--clr-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.welcome-subtitle {
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-xs);
  line-height: 1.5;
}

.welcome-info {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
}

.welcome-credits {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  margin-top: var(--space-md);
  opacity: 0.6;
}

/* ---------- BOTONES ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0.85em 2em;
  border-radius: 100px;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: var(--clr-accent);
  color: #0a1628;
}

.btn--primary:hover {
  background: #6ee7a0;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--clr-accent-glow);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--glow {
  animation: glow-pulse 2.5s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 18px var(--clr-accent-glow); }
  50%      { box-shadow: 0 0 36px var(--clr-accent-glow), 0 0 60px rgba(74, 222, 128, 0.15); }
}

.btn-arrow {
  font-size: 1.3em;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ---------- BARRA DE PROGRESO ---------- */
.progress-container {
  position: fixed;
  top: var(--space-md);
  left: var(--space-lg);
  right: var(--space-lg);
  z-index: 15;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.screen--active ~ .progress-container,
#screen-quiz.screen--active ~ .progress-container {
  opacity: 1;
}

/* JS toggled via parent */
.progress-visible {
  opacity: 1 !important;
}

.progress-bar {
  flex: 1;
  height: 7px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--clr-accent), #22d3ee);
  border-radius: 4px;
  transition: width var(--transition-medium);
}

.progress-text {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  white-space: nowrap;
}

/* ---------- INDICADOR DE PUNTUACION ---------- */
.score-indicator {
  position: fixed;
  top: calc(var(--space-md) + 30px);
  right: var(--space-lg);
  z-index: 15;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--clr-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--clr-glass-border);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  opacity: 0;
}

.score-visible {
  opacity: 1 !important;
}

.score-indicator[data-mood="positive"] {
  color: var(--clr-accent);
  border-color: rgba(74, 222, 128, 0.35);
}

.score-indicator[data-mood="negative"] {
  color: var(--clr-danger);
  border-color: rgba(248, 113, 113, 0.35);
}

.score-indicator[data-mood="neutral"] {
  color: var(--clr-warning);
  border-color: rgba(251, 191, 36, 0.35);
}

/* ---------- TARJETA DE PREGUNTA ---------- */
.question-card {
  max-width: 620px;
  width: 100%;
  position: relative;
  animation: card-enter 450ms cubic-bezier(0.4, 0, 0.2, 1);
}

.question-card.card-exit {
  animation: card-exit 280ms ease-in forwards;
}

@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateX(60px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes card-exit {
  from {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateX(-60px) scale(0.96);
  }
}

.question-number {
  position: absolute;
  top: -18px;
  left: 26px;
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--clr-accent);
  opacity: 0.15;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.question-text {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: var(--space-lg);
  padding-top: var(--space-sm);
}

/* ---------- BOTONES DE OPCION ---------- */
.options-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.04);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-size: 1rem;
  text-align: left;
  transition: all var(--transition-fast);
}

.option-btn:hover:not(:disabled) {
  background: var(--clr-glass-hover);
  border-color: var(--clr-accent);
  transform: translateX(8px);
  box-shadow: 0 4px 16px rgba(74, 222, 128, 0.12);
}

.option-btn:active:not(:disabled) {
  transform: translateX(4px);
}

.option-btn:disabled {
  cursor: default;
  opacity: 0.65;
}

.option-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.option-text {
  flex: 1;
  line-height: 1.4;
}

/* Feedback al seleccionar */
.option-btn.selected-good {
  border-color: var(--clr-accent);
  background: rgba(74, 222, 128, 0.14);
}

.option-btn.selected-good .option-letter {
  background: var(--clr-accent);
  color: #0a1628;
}

.option-btn.selected-neutral {
  border-color: var(--clr-warning);
  background: rgba(251, 191, 36, 0.14);
}

.option-btn.selected-neutral .option-letter {
  background: var(--clr-warning);
  color: #0a1628;
}

.option-btn.selected-bad {
  border-color: var(--clr-danger);
  background: rgba(248, 113, 113, 0.14);
}

.option-btn.selected-bad .option-letter {
  background: var(--clr-danger);
  color: #0a1628;
}

/* ---------- PANTALLA RESULTADOS ---------- */
.results-card {
  max-width: 500px;
  width: 100%;
  text-align: center;
}

.results-heading {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.6rem;
  margin-bottom: var(--space-md);
}

.results-score {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.3em;
  margin-bottom: var(--space-md);
}

.final-score-number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 5rem);
  background: linear-gradient(135deg, var(--clr-accent), #22d3ee);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.final-score-max {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--clr-text-muted);
}

.results-message {
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
}

/* Barra de desglose */
.results-breakdown {
  margin-bottom: var(--space-lg);
}

.breakdown-bar {
  display: flex;
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.06);
  margin-bottom: var(--space-sm);
}

.breakdown-segment {
  height: 100%;
  transition: width var(--transition-medium);
}

.breakdown-good    { background: var(--clr-accent); }
.breakdown-neutral { background: var(--clr-warning); }
.breakdown-bad     { background: var(--clr-danger); }

.breakdown-labels {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.breakdown-label {
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.3em;
}

.breakdown-label.good    { color: var(--clr-accent); }
.breakdown-label.neutral { color: var(--clr-warning); }
.breakdown-label.bad     { color: var(--clr-danger); }

/* ---------- TUTORIAL OVERLAY ---------- */
.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: var(--space-lg);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity var(--transition-medium), visibility 0s var(--transition-medium);
}

.tutorial-overlay.visible {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transition: opacity var(--transition-medium), visibility 0s 0s;
}

.tutorial-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
}

/* Spotlight: agujero circular sobre el planeta */
.tutorial-overlay.visible .tutorial-backdrop {
  -webkit-mask-image: radial-gradient(
    circle 18vw at calc(100% - var(--earth-size) / 2 + var(--earth-offset-right) * -1)
                       calc(100% - var(--earth-size) / 2 + var(--earth-offset-bottom) * -1),
    transparent 0%, transparent 100%, black 100%
  );
  mask-image: radial-gradient(
    circle 18vw at calc(100% - var(--earth-size) / 2 + var(--earth-offset-right) * -1)
                  calc(100% - var(--earth-size) / 2 + var(--earth-offset-bottom) * -1),
    transparent 0%, transparent 100%, black 100%
  );
}

.tutorial-tooltip {
  position: relative;
  z-index: 101;
  max-width: 340px;
  text-align: center;
  margin-bottom: calc(var(--earth-size) * 0.45);
  margin-right: calc(var(--earth-size) * 0.1);
  animation: tutorial-pop 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes tutorial-pop {
  from { opacity: 0; transform: scale(0.85) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.tutorial-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: var(--space-xs);
}

.tutorial-text {
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: var(--space-xs);
}

.tutorial-text .good  { color: var(--clr-accent); font-weight: 700; }
.tutorial-text .bad   { color: var(--clr-danger); font-weight: 700; }
.tutorial-text .neut  { color: var(--clr-warning); font-weight: 700; }

.tutorial-hint {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
}

.btn--small {
  font-size: 0.9rem;
  padding: 0.6em 1.6em;
}

/* Cuando el tutorial está activo, el planeta sube de z-index */
.earth-container.spotlight {
  z-index: 102;
}

/* ---------- RESPONSIVE ---------- */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --earth-size: 35vw;
    --earth-offset-bottom: -5vw;
    --earth-offset-right: -3vw;
  }
}

/* Mobile landscape + small tablets */
@media (max-width: 768px) {
  :root {
    --earth-size: 45vw;
    --earth-offset-bottom: -6vw;
    --earth-offset-right: -4vw;
  }

  body {
    overflow-y: auto;
  }

  .screen {
    padding: 60px var(--space-md) var(--space-md);
    padding-bottom: calc(var(--earth-size) + var(--earth-offset-bottom) + var(--space-md));
    align-items: flex-start;
    overflow-y: auto;
  }

  .progress-container {
    left: var(--space-md);
    right: var(--space-md);
  }

  .score-indicator {
    right: var(--space-md);
  }

  .question-text {
    font-size: 1.05rem;
  }

  .question-number {
    font-size: 2.8rem;
  }

  .glass-card {
    padding: var(--space-md);
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  :root {
    --earth-size: 50vw;
    --earth-offset-bottom: -7vw;
    --earth-offset-right: -5vw;
  }

  .welcome-title {
    font-size: 1.8rem;
  }

  .glass-card {
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
  }

  .option-btn {
    padding: 0.7rem var(--space-sm);
    gap: 0.7rem;
  }

  .option-letter {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  .btn {
    font-size: 0.95rem;
    padding: 0.75em 1.6em;
  }
}

/* Very small screens */
@media (max-width: 360px) {
  :root {
    --earth-size: 55vw;
    --earth-offset-bottom: -8vw;
    --earth-offset-right: -6vw;
  }
}