@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400;1,700&family=Inter:wght@300;400;500;600&family=Space+Mono:wght@400;700&display=swap');

/* ── Variables ── */
:root {
  --fondo:        #0f0f1a;
  --fondo-card:   #161625;
  --fondo-nav:    #0f0f1aee;

  --morado:       #7c3aed;
  --morado-claro: #a78bfa;
  --morado-suave: #1e1535;

  --azul:         #3b82f6;
  --azul-claro:   #93c5fd;
  --azul-suave:   #0f1e35;

  --blanco:       #f1f0ff;
  --gris:         #9ca3af;
  --borde:        rgba(255,255,255,0.07);
  --borde-hover:  rgba(139,92,246,0.45);
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--fondo);
  color: var(--blanco);
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
}

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.2rem 4rem;
  background: var(--fondo-nav);
  border-bottom: 1px solid var(--borde);
  backdrop-filter: blur(12px);
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem; letter-spacing: 0.1em;
  color: var(--morado-claro);
}
nav ul { list-style: none; display: flex; gap: 2.5rem; }
nav ul a {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--gris);
  text-decoration: none; transition: color 0.25s;
}
nav ul a:hover { color: var(--azul-claro); }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 6rem 2rem 4rem;
  background: linear-gradient(180deg, #0f0f1a 0%, #111128 100%);
  border-bottom: 1px solid var(--borde);
}
.hero-badge {
  display: inline-block;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--azul-claro);
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  padding: 0.4rem 1.2rem; margin-bottom: 2rem;
  animation: fadeUp 0.7s ease both 0.2s;
}
.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3.5rem, 8vw, 7.5rem);
  font-weight: 900; line-height: 1; margin-bottom: 0.15em;
  animation: fadeUp 0.7s ease both 0.4s;
}
.hero-title .line1 { color: var(--blanco); }
.hero-title .line2 {
  font-style: italic;
  background: linear-gradient(90deg, var(--morado-claro), var(--azul-claro));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gris); font-weight: 300; line-height: 1.7;
  max-width: 540px; margin: 1.5rem auto 3rem;
  animation: fadeUp 0.7s ease both 0.6s;
}
.hero-sub strong { color: var(--morado-claro); font-weight: 500; }
.hero-btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  background: var(--morado); color: #fff; text-decoration: none;
  padding: 0.85rem 2.2rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase;
  border: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
  animation: fadeUp 0.7s ease both 0.8s;
}
.hero-btn:hover { background: #6d28d9; border-color: var(--morado-claro); }
.hero-btn .arrow { transition: transform 0.25s; }
.hero-btn:hover .arrow { transform: translateX(4px); }

/* ── STATS ── */
.stats-strip {
  display: grid; grid-template-columns: repeat(4,1fr);
  background: var(--fondo-card);
  border-bottom: 1px solid var(--borde);
}
.stat {
  padding: 2.2rem 1.5rem; text-align: center;
  border-right: 1px solid var(--borde);
}
.stat:last-child { border-right: none; }
.stat-num {
  display: block; font-family: 'Playfair Display', serif;
  font-size: 2.6rem; font-weight: 900; line-height: 1;
  background: linear-gradient(135deg, var(--morado-claro), var(--azul-claro));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  display: block; margin-top: 0.5rem;
  font-size: 0.75rem; color: var(--gris); line-height: 1.4;
}

/* ── SECCIONES ── */
.section { padding: 6rem 4rem; }
.section-inner { max-width: 1100px; margin: 0 auto; }

.section-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--azul-claro); display: block; margin-bottom: 1rem;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; line-height: 1.15; color: var(--blanco); margin-bottom: 1rem;
}
.section-title em { font-style: italic; color: var(--morado-claro); }

/* ── ABOUT ── */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 5rem; align-items: center;
}
.about-visual {
  background: var(--fondo-card);
  border: 1px solid var(--borde);
  aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.about-visual .big-icon {
  font-size: 9rem; opacity: 0.08; position: absolute;
}
.aqi-display { position: relative; z-index: 1; text-align: center; }
.aqi-number {
  font-family: 'Playfair Display', serif;
  font-size: 5.5rem; font-weight: 900; line-height: 1;
  background: linear-gradient(135deg, #f87171, #fb923c);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.aqi-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--gris); margin-top: 0.5rem; display: block;
}
.aqi-bar {
  margin: 1.5rem auto 0; width: 200px; height: 8px; border-radius: 4px;
  background: linear-gradient(90deg, #22c55e, #eab308, #ef4444);
  position: relative;
}
.aqi-bar::after {
  content: ''; position: absolute;
  top: -4px; left: 75%; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 3px solid #ef4444; transform: translateX(-50%);
}
.aqi-legend {
  display: flex; justify-content: space-between;
  width: 200px; margin: 0.5rem auto 0;
  font-size: 0.6rem; color: var(--gris); font-family: 'Space Mono', monospace;
}
.about-text p {
  font-size: 1rem; color: var(--gris); line-height: 1.85; margin-top: 1.2rem;
}
.about-text p strong { color: var(--blanco); font-weight: 500; }

/* ── DIVIDER ── */
hr { border: none; border-top: 1px solid var(--borde); }

/* ── CARDS ── */
.cards-section { background: var(--fondo-card); }
.cards-header { margin-bottom: 3rem; }
.cards-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem;
}
.card {
  background: var(--fondo);
  border: 1px solid var(--borde);
  padding: 2rem 1.8rem;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover { border-color: var(--borde-hover); transform: translateY(-4px); }
.card-accent {
  width: 3px; height: 32px;
  background: linear-gradient(180deg, var(--morado), var(--azul));
  margin-bottom: 1.2rem;
}
.card-icon { font-size: 2rem; margin-bottom: 0.8rem; display: block; }
.card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem; font-weight: 700; color: var(--blanco); margin-bottom: 0.6rem;
}
.card p { font-size: 0.92rem; color: var(--gris); line-height: 1.75; }

/* ── QUOTE ── */
.quote-section {
  padding: 6rem 4rem; text-align: center;
  background: linear-gradient(180deg, var(--fondo) 0%, var(--azul-suave) 50%, var(--fondo) 100%);
}
blockquote {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  font-style: italic; font-weight: 400;
  line-height: 1.5; max-width: 800px; margin: 0 auto; color: var(--blanco);
}
blockquote span { color: var(--azul-claro); }
cite {
  display: block; margin-top: 1.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.25em;
  text-transform: uppercase; color: var(--gris); font-style: normal;
}

/* ── ACTIONS ── */
.actions-list { display: flex; flex-direction: column; gap: 1px; }
.action-item {
  display: grid; grid-template-columns: 64px 1fr auto;
  align-items: center; gap: 2rem;
  padding: 1.8rem 2rem;
  background: var(--fondo-card);
  border-left: 3px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.action-item:hover {
  border-left-color: var(--azul);
  background: rgba(59,130,246,0.05);
}
.action-num {
  font-family: 'Playfair Display', serif;
  font-size: 2rem; font-weight: 900;
  color: rgba(139,92,246,0.25); text-align: center;
}
.action-body h4 { font-size: 1rem; font-weight: 600; color: var(--blanco); margin-bottom: 0.3rem; }
.action-body p { font-size: 0.9rem; color: var(--gris); line-height: 1.6; }
.action-tag {
  font-family: 'Space Mono', monospace; font-size: 0.58rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  padding: 0.3rem 0.8rem;
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25);
  color: var(--azul-claro); white-space: nowrap;
}

/* ── PLEDGE ── */
.pledge-section {
  padding: 6rem 4rem; text-align: center;
  background: var(--fondo-card); border-top: 1px solid var(--borde);
}
.pledge-box { max-width: 580px; margin: 0 auto; }
.pledge-eyebrow {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--morado-claro); margin-bottom: 1.5rem; display: block;
}
.pledge-box h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem; font-weight: 700; color: var(--blanco); margin-bottom: 1rem;
}
.pledge-box > p { font-size: 0.98rem; color: var(--gris); line-height: 1.7; margin-bottom: 2.5rem; }
.pledge-form { display: flex; }
.pledge-form input {
  flex: 1; padding: 0.9rem 1.2rem;
  background: var(--fondo); border: 1px solid var(--borde); border-right: none;
  color: var(--blanco); font-family: 'Inter', sans-serif; font-size: 0.95rem;
  outline: none; transition: border-color 0.3s;
}
.pledge-form input:focus { border-color: rgba(139,92,246,0.5); }
.pledge-form input::placeholder { color: rgba(156,163,175,0.4); }
.pledge-form button {
  padding: 0.9rem 1.8rem; background: var(--morado); color: #fff;
  border: none; font-family: 'Space Mono', monospace;
  font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase;
  cursor: pointer; transition: background 0.3s; white-space: nowrap;
}
.pledge-form button:hover { background: #6d28d9; }
.pledge-count {
  margin-top: 1.2rem; font-family: 'Space Mono', monospace;
  font-size: 0.65rem; letter-spacing: 0.18em; color: var(--gris); text-transform: uppercase;
}
.pledge-count span { color: var(--morado-claro); }
.pledge-msg { margin-top: 0.8rem; min-height: 1.4rem; font-size: 0.95rem; color: var(--azul-claro); font-style: italic; }

/* ── FOOTER ── */
footer {
  padding: 2rem 4rem; border-top: 1px solid var(--borde);
  display: flex; justify-content: space-between; align-items: center;
}
.footer-logo { font-family: 'Playfair Display', serif; font-size: 1rem; color: var(--morado-claro); }
footer p { font-size: 0.72rem; color: var(--gris); }

/* ── Reveal on scroll ── */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: 0.12s; }
.reveal-d2 { transition-delay: 0.24s; }
.reveal-d3 { transition-delay: 0.36s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 900px) {
  nav { padding: 1rem 1.5rem; }
  nav ul { gap: 1.2rem; }
  .section { padding: 4rem 1.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .cards-grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--borde); }
  .action-item { grid-template-columns: 48px 1fr; }
  .action-tag { display: none; }
  .pledge-form { flex-direction: column; }
  .pledge-form input { border-right: 1px solid var(--borde); }
  footer { flex-direction: column; gap: 0.8rem; text-align: center; }
  .quote-section { padding: 4rem 1.5rem; }
}