/* ========================================
   COSMOS & MITOLOGÍA — Stylesheet
   ADHD-friendly: generous spacing,
   clear sections, minimal clutter
   ======================================== */

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

:root {
  --bg:          #05050f;
  --bg-alt:      #08081a;
  --gold:        #e8c87a;
  --gold-dim:    #a8884a;
  --blue-glow:   #5b8fff;
  --text:        #ddd8f0;
  --text-muted:  #8a86a0;
  --mars-red:    #e85c3a;
  --moon-silver: #b8c4d8;
  --sun-orange:  #f5a623;
  --pluto-blue:  #6a9cc8;
  --card-bg:     rgba(255,255,255,0.03);
  --border:      rgba(255,255,255,0.07);

  --font-display: 'Cinzel', serif;
  --font-body:    'Lato', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  7rem;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.8;
  overflow-x: hidden;
}

/* --- ANIMATED STARS --- */
.stars, .stars2 {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

.stars {
  background-image:
    radial-gradient(1px 1px at 10% 15%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 25% 60%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 40% 30%, rgba(255,255,255,0.7) 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 80%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 20%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 55%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 92% 10%, rgba(255,255,255,0.7) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 5% 90%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 45%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 60% 70%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 78% 88%, rgba(232,200,122,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 15% 35%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 48% 5%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 95% 75%, rgba(255,255,255,0.4) 0%, transparent 100%);
  animation: twinkle 8s ease-in-out infinite alternate;
}

.stars2 {
  background-image:
    radial-gradient(1px 1px at 20% 25%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 35% 70%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 50% 40%, rgba(255,255,255,0.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 65% 15%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 65%, rgba(255,255,255,0.5) 0%, transparent 100%),
    radial-gradient(2px 2px at 90% 35%, rgba(91,143,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 8% 50%, rgba(255,255,255,0.4) 0%, transparent 100%),
    radial-gradient(1px 1px at 43% 85%, rgba(255,255,255,0.3) 0%, transparent 100%),
    radial-gradient(1px 1px at 72% 5%, rgba(255,255,255,0.6) 0%, transparent 100%);
  animation: twinkle 12s ease-in-out infinite alternate-reverse;
}

@keyframes twinkle {
  0%   { opacity: 0.6; }
  100% { opacity: 1; }
}

/* --- LAYOUT --- */
.container {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.narrow {
  max-width: 720px;
}

/* --- HERO --- */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(91,143,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 50% 100%, rgba(232,200,122,0.06) 0%, transparent 70%);
}

.hero-content {
  animation: fadeUp 1.2s ease both;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 900;
  line-height: 1.05;
  color: #fff;
  text-shadow: 0 0 60px rgba(91,143,255,0.3);
  margin-bottom: var(--space-md);
}

.hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- INTRO SECTION --- */
.intro {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}

.intro h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--gold);
  margin-bottom: var(--space-md);
}

.intro p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
}

/* --- SECTION LABEL DIVIDER --- */
.section-label {
  position: relative;
  z-index: 1;
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  color: var(--gold-dim);
  text-transform: uppercase;
  padding: var(--space-sm) 0 var(--space-lg);
}

/* --- BODY CARDS --- */
.body-card {
  position: relative;
  z-index: 1;
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--border);
}

.body-card.alt {
  background-color: var(--bg-alt);
}

.card-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.card-layout.reversed {
  direction: rtl;
}

.card-layout.reversed > * {
  direction: ltr;
}

/* --- IMAGE PLACEHOLDER --- */
.card-image-area {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-placeholder {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 2px dashed var(--border);
  background: rgba(255,255,255,0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  text-align: center;
  transition: border-color 0.3s ease;
}

.image-placeholder:hover {
  border-color: var(--gold-dim);
}

.img-icon {
  font-size: 3.5rem;
  filter: grayscale(0.3);
}

.image-placeholder p {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.img-hint {
  font-size: 0.7rem !important;
  color: rgba(138,134,160,0.5) !important;
}

/* --- CARD TEXT --- */
.card-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.planet-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-display);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--blue-glow);
  padding: 0.3em 0.9em;
  border-radius: 100px;
  width: fit-content;
}

.planet-tag.special   { background: var(--pluto-blue); }
.planet-tag.moon-tag  { background: var(--moon-silver); }
.planet-tag.sun-tag   { background: var(--sun-orange); }

.planet-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 900;
  color: #fff;
  line-height: 1;
}

#mars   .planet-name { color: var(--mars-red); text-shadow: 0 0 40px rgba(232,92,58,0.3); }
#pluto  .planet-name { color: var(--pluto-blue); text-shadow: 0 0 40px rgba(106,156,200,0.3); }
#moon   .planet-name { color: var(--moon-silver); text-shadow: 0 0 40px rgba(184,196,216,0.3); }
#sun    .planet-name { color: var(--sun-orange); text-shadow: 0 0 40px rgba(245,166,35,0.3); }

.planet-greek {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.planet-desc {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.85;
  max-width: 480px;
}

.planet-desc strong {
  color: var(--text);
  font-weight: 400;
}

/* --- FACT CHIPS --- */
.fact-chip {
  display: inline-block;
  font-size: 0.78rem;
  padding: 0.4em 1em;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--text-muted);
  margin-right: var(--space-xs);
  margin-top: var(--space-xs);
  width: fit-content;
}

/* --- FOOTER --- */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  background: var(--bg-alt);
}

.footer-stars {
  font-size: 1.2rem;
  color: var(--gold-dim);
  letter-spacing: 1rem;
  margin-bottom: var(--space-lg);
}

.student-info {
  display: inline-flex;
  flex-direction: column;
  gap: 0.4rem;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255,255,255,0.02);
  margin-bottom: var(--space-md);
}

.student-info p {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.footer-note {
  font-size: 0.75rem;
  color: rgba(138,134,160,0.4);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* --- ANIMATIONS --- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .card-layout,
  .card-layout.reversed {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: var(--space-md);
  }

  .card-layout.reversed > * {
    direction: ltr;
  }

  .image-placeholder {
    max-width: 260px;
    margin: 0 auto;
  }

  .planet-desc {
    max-width: 100%;
  }
}