/* ============================================================
   SAVALIYA PATEL AMBULANCE — CUSTOM STYLES
   Loaded after Tailwind CDN. Contains: base type rules, the
   ECG "heartbeat line" signature motif, scroll-reveal engine,
   counters, floating action buttons, and component tweaks that
   go beyond plain utility classes.
   ============================================================ */

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-primary);
  color: var(--text-dark);
  background: var(--bg-primary);
}

h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
}

/* ---------- Selection & focus ---------- */
::selection { background: var(--emergency-red); color: #fff; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--trust-blue);
  outline-offset: 2px;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   SIGNATURE MOTIF — Animated ECG / heartbeat line
   Used as a section divider & loading indicator across the site.
   ============================================================ */
.ecg-line {
  width: 100%;
  height: 40px;
  overflow: hidden;
}
.ecg-line svg { width: 200%; height: 100%; }
.ecg-line path {
  fill: none;
  stroke: var(--emergency-red);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: ecg-scroll 6s linear infinite;
}
@keyframes ecg-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Heartbeat pulse ring — used behind the emergency call button */
.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  background: var(--emergency-red);
  opacity: 0.55;
  animation: pulse-ring 1.8s cubic-bezier(0.4,0,0.6,1) infinite;
}
@keyframes pulse-ring {
  0%   { transform: scale(1);   opacity: 0.55; }
  70%  { transform: scale(1.9); opacity: 0; }
  100% { transform: scale(1.9); opacity: 0; }
}

.heartbeat-icon { animation: heartbeat 1.6s ease-in-out infinite; }
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  15% { transform: scale(1.18); }
  30% { transform: scale(1); }
  45% { transform: scale(1.12); }
  60% { transform: scale(1); }
}

/* Floating medical icons in hero background */
.float-slow { animation: float 6s ease-in-out infinite; }
.float-slower { animation: float 9s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(4deg); }
}

/* ============================================================
   SCROLL REVEAL — toggled by main.js via IntersectionObserver
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 90ms; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 180ms; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 270ms; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 360ms; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 450ms; }

/* ============================================================
   COMPONENTS
   ============================================================ */

/* Sticky nav shadow state (added by JS on scroll) */
#site-header.is-scrolled {
  box-shadow: var(--shadow-soft);
  background: rgba(11, 31, 58, 0.97);
}

/* Card lift */
.card-lift { transition: transform 0.35s ease, box-shadow 0.35s ease; }
.card-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-soft); }

/* Glass panel — used sparingly on hero stat strip only */
.glass-panel {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* Emergency ribbon marquee (top utility bar) */
.marquee-track {
  animation: marquee 22s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Accordion (FAQ) chevron rotation */
.faq-toggle[aria-expanded="true"] .faq-chevron { transform: rotate(180deg); }
.faq-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

/* Loader */
#page-loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--primary-navy);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#page-loader.loaded { opacity: 0; visibility: hidden; }

/* Floating action buttons */
.fab { box-shadow: var(--shadow-soft); }

/* Scroll-to-top button visibility */
#scroll-top { opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease; }
#scroll-top.show { opacity: 1; pointer-events: auto; }

/* Gallery lightbox */
#lightbox { transition: opacity 0.3s ease; }
#lightbox.hidden-lightbox { opacity: 0; pointer-events: none; }

/* Utility: text gradient */
.text-gradient-red {
  background: var(--emergency-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Section divider wave-free simple rule with dot */
.divider-dot {
  width: 6px; height: 6px; border-radius: 9999px; background: var(--emergency-red);
  display: inline-block;
}

/* Lazy image fade-in once loaded */
img.lazy-img { opacity: 0; transition: opacity 0.5s ease; }
img.lazy-img.loaded-img { opacity: 1; }