/* ============================================================
   Bufalos Health Center — estilos personalizados
   ============================================================ */

:root {
  --bufalo-red: #a72020;
  --bufalo-red-light: #c93030;
  --bufalo-carbon: #5b585d;
  --bufalo-ink: #1a191c;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  overflow-x: hidden;
}

.font-heading {
  font-family: 'Anton', 'Oswald', sans-serif;
  letter-spacing: 0.01em;
}

/* ---------- Tipografía display ---------- */
.display-title {
  font-family: 'Anton', sans-serif;
  text-transform: uppercase;
  line-height: 0.95;
}

/* ---------- Botones ---------- */
.btn-primary {
  background: var(--bufalo-red);
  transition: all 0.25s ease;
  box-shadow: 0 6px 20px -6px rgba(167, 32, 32, 0.6);
}
.btn-primary:hover {
  background: var(--bufalo-red-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -6px rgba(167, 32, 32, 0.75);
}
.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.85);
  transition: all 0.25s ease;
}
.btn-outline:hover {
  background: #fff;
  color: var(--bufalo-ink);
}

/* ---------- Header ---------- */
.header-scrolled {
  background: rgba(26, 25, 28, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* ---------- Hero overlay ---------- */
.hero-overlay {
  background: linear-gradient(
    100deg,
    rgba(26, 25, 28, 0.94) 0%,
    rgba(26, 25, 28, 0.78) 45%,
    rgba(26, 25, 28, 0.35) 100%
  );
}

.section-grain {
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ---------- Cards ---------- */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card-hover:hover {
  transform: translateY(-6px);
  border-color: var(--bufalo-red);
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.6);
}

/* ---------- Accent line ---------- */
.accent-line::after {
  content: '';
  display: block;
  width: 64px;
  height: 4px;
  background: var(--bufalo-red);
  margin-top: 14px;
  border-radius: 2px;
}
.accent-line.center::after {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- FAQ accordion ---------- */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.open .faq-answer {
  max-height: 400px;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-icon {
  transition: transform 0.3s ease;
}

/* ---------- Wizard / formulario interactivo ---------- */
.wizard-step {
  display: none;
  animation: fadeSlide 0.45s ease;
}
.wizard-step.active {
  display: block;
}
@keyframes fadeSlide {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.option-card {
  cursor: pointer;
  transition: all 0.2s ease;
  border: 2px solid rgba(255, 255, 255, 0.12);
}
.option-card:hover {
  border-color: var(--bufalo-red-light);
  background: rgba(167, 32, 32, 0.08);
}
.option-card.selected {
  border-color: var(--bufalo-red);
  background: rgba(167, 32, 32, 0.16);
  box-shadow: 0 0 0 1px var(--bufalo-red);
}
.option-card.selected .option-check {
  opacity: 1;
}
.option-check {
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* Progress bar */
.progress-fill {
  transition: width 0.5s ease;
}

.form-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.form-input:focus {
  outline: none;
  border-color: var(--bufalo-red);
  background: rgba(255, 255, 255, 0.08);
}
.form-input.error {
  border-color: #ef4444;
}

/* ---------- Marquee ---------- */
.marquee {
  display: flex;
  white-space: nowrap;
  overflow: hidden;
}
.marquee__track {
  display: flex;
  animation: marquee 26s linear infinite;
}
@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ---------- Mobile menu ---------- */
.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.35s ease;
}
.mobile-menu.open {
  transform: translateX(0);
}

/* Stars */
.stars i {
  color: #f5b50a;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bufalo-ink);
}
::-webkit-scrollbar-thumb {
  background: var(--bufalo-carbon);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--bufalo-red);
}