/* ==========================================================================
   MediFlow — Unified Motion Design & Animation System
   High-performance, physics-inspired micro-interactions & smooth transitions.
   Adheres to strict healthcare UX standards: calm, trustworthy, and non-distracting.
   ========================================================================== */

:root {
  /* --- Motion Design Easing Curves --- */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);       /* Smooth deceleration for entrances */
  --ease-out-smooth: cubic-bezier(0.22, 1, 0.36, 1);    /* Natural standard easing */
  --ease-out-back: cubic-bezier(0.34, 1.35, 0.64, 1);   /* Subtle pop/spring for badges */
  --ease-in-out-smooth: cubic-bezier(0.65, 0, 0.35, 1); /* Continuous ambient animations */
  --ease-spring-subtle: cubic-bezier(0.175, 0.885, 0.32, 1.15); /* Controlled micro-snap */

  /* --- Standard Durations --- */
  --dur-micro: 160ms;       /* Button clicks, icons, toggles */
  --dur-fast: 240ms;        /* Hover elevations, tooltips */
  --dur-normal: 360ms;      /* Dropdowns, cards, accordions */
  --dur-reveal: 520ms;      /* Scroll entrances, steps */
  --dur-section: 680ms;     /* Section reveals, hero layout */
  --dur-ambient: 7000ms;    /* Gentle background floating */
}

/* ==========================================================================
   1. GLOBAL PAGE ENTRANCE
   Smooth, flicker-free page arrival across all 7 pages
   ========================================================================== */
@keyframes pageEntrance {
  0% {
    opacity: 0;
    transform: translateY(6px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

body {
  animation: pageEntrance 0.32s var(--ease-out-expo) both;
}

/* ==========================================================================
   2. KEYFRAME ANIMATIONS
   ========================================================================== */

/* Gentle Floating for Hero cards and decorative badges */
@keyframes floatSmooth {
  0%, 100% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(0, -9px, 0) rotate(0.6deg);
  }
}

@keyframes floatSmoothReverse {
  0%, 100% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(0, 9px, 0) rotate(-0.6deg);
  }
}

/* Ambient Radial Glow Pulse for Hero background */
@keyframes ambientGlowPulse {
  0%, 100% {
    opacity: 0.35;
    transform: scale(1);
  }
  50% {
    opacity: 0.65;
    transform: scale(1.08);
  }
}

/* Radar Ping Indicator for Map & Live Status */
@keyframes radarPing {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.7);
  }
  70% {
    transform: scale(1.15);
    box-shadow: 0 0 0 12px rgba(20, 184, 166, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(20, 184, 166, 0);
  }
}

@keyframes radarPingDanger {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.7);
  }
  70% {
    transform: scale(1.15);
    box-shadow: 0 0 0 12px rgba(244, 63, 94, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(244, 63, 94, 0);
  }
}

/* Indoor CAD Map Beacon Sonar Waves */
@keyframes beaconSonar {
  0% {
    transform: scale(0.85);
    opacity: 0.85;
  }
  70% {
    transform: scale(2.2);
    opacity: 0;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

/* Active Room Glow in Architectural SVG Map */
@keyframes roomGlowPulse {
  0%, 100% {
    filter: drop-shadow(0 0 4px rgba(13, 148, 136, 0.45));
  }
  50% {
    filter: drop-shadow(0 0 11px rgba(13, 148, 136, 0.85));
  }
}

/* Dashed Walking Path Forward Motion in SVG Corridors */
@keyframes dashFlow {
  to {
    stroke-dashoffset: -28;
  }
}

/* Route Polyline Draw-in Animation */
@keyframes drawRoutePath {
  from {
    stroke-dashoffset: 1200;
  }
  to {
    stroke-dashoffset: 0;
  }
}

/* Subtle Shimmer for Skeleton Loaders & Highlights */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Spin animation for spinners */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Progress bar fill pulse */
@keyframes progressStripes {
  from {
    background-position: 40px 0;
  }
  to {
    background-position: 0 0;
  }
}

/* Badge Spring Pop */
@keyframes badgePop {
  0% {
    transform: scale(0.7);
    opacity: 0;
  }
  70% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* SVG Checkmark Draw Animation */
@keyframes checkmarkDraw {
  0% {
    stroke-dashoffset: 48;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

/* Modal Pop In */
@keyframes modalBackdropFade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modalDialogPop {
  from {
    opacity: 0;
    transform: scale(0.93) translateY(14px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Toast Notifications */
@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translate3d(45px, 0, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes toastSlideOut {
  from {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
  to {
    opacity: 0;
    transform: translate3d(35px, 0, 0);
  }
}

/* ==========================================================================
   3. SCROLL REVEAL SYSTEM (INTERSECTION OBSERVER)
   Genuinely visible, smooth, GPU-accelerated motion with blur-to-sharp entrance
   and bulletproof fallback (never leaves content invisible if JS is absent)
   ========================================================================== */

:root {
  --reveal-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --reveal-dur-elem: 0.72s;
  --reveal-dur-section: 0.85s;
}

/* Default safety: all content visible if JS fails */
.reveal,
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale,
.reveal-fade,
.reveal-section {
  opacity: 1;
  transform: none;
  filter: none;
}

/* Activated ONLY when JavaScript confirms observer readiness */
html.js-reveal .reveal,
html.js-reveal .reveal-up {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  filter: blur(4px);
  transition: opacity var(--reveal-dur-elem) var(--reveal-ease),
              transform var(--reveal-dur-elem) var(--reveal-ease),
              filter var(--reveal-dur-elem) var(--reveal-ease);
  will-change: opacity, transform, filter;
}

html.js-reveal .reveal-left {
  opacity: 0;
  transform: translate3d(-36px, 0, 0);
  filter: blur(4px);
  transition: opacity var(--reveal-dur-elem) var(--reveal-ease),
              transform var(--reveal-dur-elem) var(--reveal-ease),
              filter var(--reveal-dur-elem) var(--reveal-ease);
  will-change: opacity, transform, filter;
}

html.js-reveal .reveal-right {
  opacity: 0;
  transform: translate3d(36px, 0, 0);
  filter: blur(4px);
  transition: opacity var(--reveal-dur-elem) var(--reveal-ease),
              transform var(--reveal-dur-elem) var(--reveal-ease),
              filter var(--reveal-dur-elem) var(--reveal-ease);
  will-change: opacity, transform, filter;
}

html.js-reveal .reveal-scale {
  opacity: 0;
  transform: translate3d(0, 24px, 0) scale(0.92);
  filter: blur(4px);
  transition: opacity var(--reveal-dur-elem) var(--reveal-ease),
              transform var(--reveal-dur-elem) var(--reveal-ease),
              filter var(--reveal-dur-elem) var(--reveal-ease);
  will-change: opacity, transform, filter;
}

html.js-reveal .reveal-fade {
  opacity: 0;
  filter: blur(4px);
  transition: opacity var(--reveal-dur-elem) var(--reveal-ease),
              filter var(--reveal-dur-elem) var(--reveal-ease);
  will-change: opacity, filter;
}

html.js-reveal .reveal-section {
  opacity: 0;
  transform: translate3d(0, 40px, 0);
  filter: blur(4px);
  transition: opacity var(--reveal-dur-section) var(--reveal-ease),
              transform var(--reveal-dur-section) var(--reveal-ease),
              filter var(--reveal-dur-section) var(--reveal-ease);
  will-change: opacity, transform, filter;
}

/* Visible / Active State (supports both .visible and .active) */
html.js-reveal .reveal.visible,
html.js-reveal .reveal.active,
html.js-reveal .reveal-up.visible,
html.js-reveal .reveal-up.active,
html.js-reveal .reveal-left.visible,
html.js-reveal .reveal-left.active,
html.js-reveal .reveal-right.visible,
html.js-reveal .reveal-right.active,
html.js-reveal .reveal-scale.visible,
html.js-reveal .reveal-scale.active,
html.js-reveal .reveal-section.visible,
html.js-reveal .reveal-section.active {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
  filter: blur(0);
}

html.js-reveal .reveal-fade.visible,
html.js-reveal .reveal-fade.active {
  opacity: 1;
  filter: blur(0);
}

/* Mobile & Tablet Responsive Adjustments: Use pure vertical translate to eliminate horizontal overflow */
@media (max-width: 768px) {
  html.js-reveal .reveal-left,
  html.js-reveal .reveal-right {
    transform: translate3d(0, 24px, 0);
  }
  html.js-reveal .reveal,
  html.js-reveal .reveal-up {
    transform: translate3d(0, 24px, 0);
  }
  html.js-reveal .reveal-scale {
    transform: translate3d(0, 16px, 0) scale(0.95);
  }
  html.js-reveal .reveal-section {
    transform: translate3d(0, 28px, 0);
  }
}

/* Stagger Delays for Grid items, Steps & Lists (80ms - 120ms between siblings) */
.stagger-1 { transition-delay: 80ms !important; }
.stagger-2 { transition-delay: 160ms !important; }
.stagger-3 { transition-delay: 240ms !important; }
.stagger-4 { transition-delay: 320ms !important; }
.stagger-5 { transition-delay: 400ms !important; }
.stagger-6 { transition-delay: 480ms !important; }
.stagger-7 { transition-delay: 560ms !important; }
.stagger-8 { transition-delay: 640ms !important; }

/* Legacy delay classes compatibility */
.delay-100 { transition-delay: 100ms !important; }
.delay-200 { transition-delay: 200ms !important; }
.delay-300 { transition-delay: 300ms !important; }
.delay-400 { transition-delay: 400ms !important; }
.delay-500 { transition-delay: 500ms !important; }
.delay-600 { transition-delay: 600ms !important; }

/* ==========================================================================
   4. INTERACTIVE MICRO-INTERACTIONS & HOVER EFFECTS
   ========================================================================== */

/* Cards with Soft 3D Hover Elevation */
.interactive-card,
.card-hover {
  transition: transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast) var(--ease-out-expo),
              border-color var(--dur-fast) ease;
}

.interactive-card:hover,
.card-hover:hover {
  transform: translate3d(0, -4px, 0);
  box-shadow: 0 14px 28px -4px rgba(15, 23, 42, 0.08), 0 6px 12px -2px rgba(15, 23, 42, 0.04);
  border-color: rgba(20, 184, 166, 0.4);
}

.interactive-card:active,
.card-hover:active {
  transform: translate3d(0, -1px, 0) scale(0.995);
  box-shadow: 0 6px 16px -2px rgba(15, 23, 42, 0.06);
}

/* Service Card Micro-Interactions */
.service-feature-card {
  transition: transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast) var(--ease-out-expo),
              border-color var(--dur-fast) ease;
}

.service-feature-card:hover {
  transform: translate3d(0, -5px, 0);
  box-shadow: 0 16px 32px -4px rgba(15, 23, 42, 0.09), 0 6px 14px -2px rgba(15, 23, 42, 0.05);
  border-color: rgba(20, 184, 166, 0.45);
}

.service-feature-card:hover .service-icon-box {
  transform: scale(1.08) rotate(-2deg);
  background: var(--teal-600);
  color: var(--white);
  box-shadow: 0 8px 18px rgba(13, 148, 136, 0.35);
}

.service-icon-box {
  transition: transform var(--dur-fast) var(--ease-out-back),
              background-color var(--dur-fast) ease,
              color var(--dur-fast) ease,
              box-shadow var(--dur-fast) ease;
}

/* Button Refined Hover & Active Press */
.btn {
  position: relative;
  transition: transform var(--dur-micro) var(--ease-out-expo),
              box-shadow var(--dur-micro) var(--ease-out-expo),
              background-color var(--dur-micro) ease,
              border-color var(--dur-micro) ease;
  user-select: none;
}

.btn:hover {
  transform: translate3d(0, -1.5px, 0);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.12);
}

.btn:active {
  transform: translate3d(0, 1px, 0) scale(0.98);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.btn-primary:hover {
  box-shadow: 0 6px 18px rgba(13, 148, 136, 0.35);
}

/* Micro Icon Nudge on Button Hover */
.btn svg {
  transition: transform var(--dur-micro) var(--ease-out-expo);
}

.btn:hover svg {
  transform: translateX(2px);
}

/* Filter Pills & Interactive Chips */
.filter-pill {
  transition: transform var(--dur-micro) var(--ease-out-expo),
              background-color var(--dur-micro) ease,
              color var(--dur-micro) ease,
              box-shadow var(--dur-micro) ease;
  cursor: pointer;
}

.filter-pill:hover:not(.active) {
  transform: translateY(-1px);
  background: var(--slate-200) !important;
}

.filter-pill:active {
  transform: scale(0.97);
}

.filter-pill.active {
  animation: badgePop 0.25s var(--ease-out-back);
}

/* Input & Select Focus Glow */
.form-input,
.form-select,
.form-textarea {
  transition: border-color var(--dur-fast) ease,
              box-shadow var(--dur-fast) ease,
              background-color var(--dur-fast) ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--teal-600) !important;
  box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.16) !important;
}

/* Accordion Smooth Expand/Collapse */
.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s var(--ease-out-expo);
  overflow: hidden;
}

.accordion-content.open {
  grid-template-rows: 1fr;
}

.accordion-inner {
  min-height: 0;
}

.accordion-chevron {
  transition: transform 0.3s var(--ease-out-expo);
}

.accordion-item.open .accordion-chevron,
.accordion-header.active .accordion-chevron {
  transform: rotate(180deg);
}

/* Modal Window Animation */
.modal-overlay {
  animation: modalBackdropFade var(--dur-fast) ease forwards;
}

.modal-dialog {
  animation: modalDialogPop var(--dur-normal) var(--ease-out-expo) forwards;
}

/* ==========================================================================
   5. UTILITY ANIMATION HELPERS
   ========================================================================== */
.animate-float {
  animation: floatSmooth var(--dur-ambient) ease-in-out infinite;
}

.animate-float-reverse {
  animation: floatSmoothReverse calc(var(--dur-ambient) * 1.1) ease-in-out infinite;
}

.animate-pulse-glow {
  animation: ambientGlowPulse 4.5s ease-in-out infinite;
}

.ping-indicator {
  width: 10px;
  height: 10px;
  background-color: var(--teal-500);
  border-radius: 50%;
  display: inline-block;
  animation: radarPing 2s infinite;
}

.ping-indicator-danger {
  width: 10px;
  height: 10px;
  background-color: var(--rose-500);
  border-radius: 50%;
  display: inline-block;
  animation: radarPingDanger 2s infinite;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
  display: inline-block;
}

.spinner-teal {
  border: 2.5px solid rgba(13, 148, 136, 0.2);
  border-top-color: var(--teal-600);
}

/* Animated Walking Route Path on Hospital Blueprint */
.walking-route-path {
  fill: none;
  stroke: #2DD4BF;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 8 6;
  animation: dashFlow 1.1s linear infinite;
  filter: drop-shadow(0 0 5px rgba(45, 212, 191, 0.65));
}

.cad-beacon-pulse {
  animation: beaconSonar 2.2s cubic-bezier(0.2, 0.8, 0.4, 1) infinite;
  transform-origin: center;
}

.cad-room-group.active .cad-room-shape {
  animation: roomGlowPulse 2.8s ease-in-out infinite;
}

/* Direction Step Transitions */
.direction-step {
  transition: transform var(--dur-fast) var(--ease-out-expo),
              background-color var(--dur-fast) ease,
              border-color var(--dur-fast) ease;
}

.direction-step:hover {
  transform: translateX(3px);
}

/* Animated Counter Number */
.js-counter {
  font-variant-numeric: tabular-nums;
  display: inline-block;
}

/* Shimmer Progress Track */
.progress-bar-shimmer {
  position: relative;
  overflow: hidden;
}

.progress-bar-shimmer::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

/* ==========================================================================
   6. ACCESSIBILITY: STRICT REDUCED MOTION PREFERENCE
   Respects user's OS preference, disabling motion while guaranteeing visibility
   ========================================================================== */
@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;
  }

  body {
    animation: none !important;
  }

  html.js-reveal .reveal,
  html.js-reveal .reveal-up,
  html.js-reveal .reveal-left,
  html.js-reveal .reveal-right,
  html.js-reveal .reveal-scale,
  html.js-reveal .reveal-fade,
  html.js-reveal .reveal-section,
  .reveal,
  .reveal-up,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .reveal-fade,
  .reveal-section {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }

  .animate-float,
  .animate-float-reverse,
  .animate-pulse-glow,
  .cad-beacon-pulse,
  .walking-route-path {
    animation: none !important;
  }

  .interactive-card:hover,
  .card-hover:hover,
  .service-feature-card:hover,
  .btn:hover {
    transform: none !important;
  }
}