/*
Theme Name: Villa Sereno — Luxury Walkthrough
Theme URI: https://example.com/villa-sereno
Author: Antigravity AI & Subham Saha
Author URI: https://example.com
Description: A premium, ultra-luxury interactive real estate WordPress theme that creates the cinematic illusion of walking through a luxury modern beachfront villa at 60 FPS. Powered by a custom photographic optical canvas engine.
Version: 1.0.0
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: villa-sereno
Tags: one-column, custom-colors, custom-menu, full-width-template, real-estate, interactive, luxury, portfolio
*/

/* ==========================================================================
   DESIGN SYSTEM TOKENS & VARIABLES
   ========================================================================== */
:root {
  --bg-primary: #0b0c10;
  --bg-glass: rgba(15, 17, 23, 0.65);
  --bg-glass-hover: rgba(25, 28, 38, 0.85);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-glass-strong: rgba(255, 255, 255, 0.28);
  
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.75);
  --text-muted: rgba(255, 255, 255, 0.45);
  
  --accent-gold: #e2c178;
  --accent-gold-glow: rgba(226, 193, 120, 0.35);
  --accent-cyan: #64ffda;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --z-canvas: 1;
  --z-hotspots: 10;
  --z-hud: 20;
  --z-loader: 100;
}

/* ==========================================================================
   CORE RESET & TYPOGRAPHY
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg-primary);
  overflow-x: hidden;
  position: relative;
}

/* Lock scrollbar when preloader is running */
body.loading-active {
  overflow: hidden !important;
}

/* Virtual Scroll Spacer to power smooth native scrolling */
#virtual-scroll-spacer {
  height: 600vh;
  width: 100%;
  pointer-events: none;
}

/* ==========================================================================
   FULLSCREEN HIGH-PRECISION PHOTOGRAPHIC CANVAS
   ========================================================================== */
#walkthrough-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-canvas);
  pointer-events: none;
  display: block;
  background: var(--bg-primary);
  image-rendering: -webkit-optimize-contrast;
  image-rendering: high-quality;
}

body.loading-active #walkthrough-canvas {
  opacity: 0;
}

/* ==========================================================================
   CINEMATIC LOADING PRELOADER
   ========================================================================== */
#preloader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-loader);
  background: radial-gradient(circle at center, #161822 0%, #0b0c10 80%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.9s ease;
}

#preloader-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  text-align: center;
  max-width: 440px;
  width: 85%;
  padding: 2.5rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.loader-brand {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.loader-subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 2rem;
  font-weight: 500;
}

.loader-progress-track {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  position: relative;
}

#loading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-gold), #fff);
  box-shadow: 0 0 12px var(--accent-gold-glow);
  transition: width 0.15s ease-out;
}

#loading-status {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: monospace;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   HUD HEADERS & GLASSMORPHIC CONTROLS
   ========================================================================== */
#hud-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 2rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: var(--z-hud);
  pointer-events: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

#hud-header.hidden {
  opacity: 0;
  transform: translateY(-15px);
  pointer-events: none;
}

.hud-brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  pointer-events: auto;
}

.hud-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--text-primary);
  text-transform: uppercase;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hud-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
}

.control-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.6rem 1.1rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.control-btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  stroke: var(--text-primary);
  transition: stroke 0.25s ease;
}

.control-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-strong);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.control-btn.active {
  background: rgba(226, 193, 120, 0.18);
  border-color: var(--accent-gold);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-gold-glow);
}

.control-btn.active svg {
  stroke: var(--accent-gold);
}

.control-btn.icon-only {
  padding: 0.6rem;
  border-radius: 50%;
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   BOTTOM HUD & FLOATING SCROLL PROMPT PILL
   ========================================================================== */
#hud-footer {
  position: fixed;
  bottom: 2rem;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  z-index: var(--z-hud);
  pointer-events: none;
}

.scroll-prompt-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  padding: 0.65rem 1.4rem;
  border-radius: 50px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  pointer-events: auto;
  cursor: pointer;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  animation: pulsePrompt 3s infinite ease-in-out;
}

.scroll-prompt-pill.faded {
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}

.scroll-prompt-pill .mouse-icon {
  width: 18px;
  height: 26px;
  border: 2px solid var(--accent-gold);
  border-radius: 12px;
  position: relative;
  display: flex;
  justify-content: center;
}

.scroll-prompt-pill .mouse-wheel {
  width: 3px;
  height: 6px;
  background: var(--accent-gold);
  border-radius: 2px;
  position: absolute;
  top: 4px;
  animation: wheelDrop 1.6s infinite ease-in-out;
}

.scroll-prompt-pill span {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
}

@keyframes wheelDrop {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

@keyframes pulsePrompt {
  0%, 100% { box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 0 rgba(226, 193, 120, 0); }
  50% { box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 18px var(--accent-gold-glow); }
}

/* ==========================================================================
   INTERACTIVE ARCHITECTURAL HOTSPOT PINS & CARDS
   ========================================================================== */
#hotspots-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: var(--z-hotspots);
  pointer-events: none;
}

.hotspot-point {
  position: absolute;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(226, 193, 120, 0.25);
  border: 1px solid var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(0.85);
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 20px var(--accent-gold-glow);
}

.hotspot-point.visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.hotspot-point::after {
  content: '';
  width: 10px;
  height: 10px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 8px #fff;
}

.hotspot-point:hover {
  transform: translate(-50%, -50%) scale(1.15);
  background: rgba(226, 193, 120, 0.45);
}

.hotspot-card {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 290px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass-strong);
  border-radius: 12px;
  padding: 1.25rem;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.hotspot-point:hover .hotspot-card,
.hotspot-point.expanded .hotspot-card {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.hotspot-card .tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.hotspot-card h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.hotspot-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE TOUCH OPTIMIZATIONS
   ========================================================================== */
html, body {
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
}

#walkthrough-canvas {
  height: 100vh;
  height: 100dvh;
}

@media (max-width: 1024px) {
  #hud-header {
    padding: 1.25rem 1.5rem;
  }
  #hud-footer {
    bottom: 1.5rem;
  }
}

@media (max-width: 768px) {
  #hud-header {
    top: 0.8rem;
    left: 0.8rem;
    right: 0.8rem;
    padding: 0.8rem 1rem;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
    background: rgba(11, 12, 16, 0.55);
    border-radius: 16px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .hud-brand {
    width: 100%;
    justify-content: center;
  }
  
  .hud-logo {
    font-size: 1.15rem;
    letter-spacing: 0.18em;
  }

  .hud-controls {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .control-btn {
    padding: 0.45rem 0.8rem;
    font-size: 0.65rem;
    letter-spacing: 0.06em;
    gap: 0.4rem;
  }

  .control-btn svg {
    width: 13px;
    height: 13px;
  }
  
  /* Hotspot Cards mobile bottom anchor */
  .hotspot-card {
    position: fixed;
    bottom: 90px;
    left: 50% !important;
    transform: translateX(-50%) translateY(10px) !important;
    width: calc(100vw - 32px);
    max-width: 330px;
    z-index: 999;
  }

  .hotspot-point:hover .hotspot-card,
  .hotspot-point.expanded .hotspot-card {
    transform: translateX(-50%) translateY(0) !important;
  }

  #hud-footer {
    bottom: 1.2rem;
    left: 1rem;
    right: 1rem;
  }

  .scroll-prompt-pill {
    padding: 0.55rem 1.1rem;
    gap: 0.6rem;
    background: rgba(15, 17, 23, 0.85);
  }

  .scroll-prompt-pill span {
    font-size: 0.68rem;
  }

  .scroll-prompt-pill span::after {
    content: ' OR SWIPE UP';
    color: var(--accent-gold);
    font-weight: 600;
  }
}

@media (max-width: 480px) {
  .hud-controls {
    gap: 0.35rem;
  }

  .control-btn {
    padding: 0.4rem 0.65rem;
    font-size: 0.62rem;
  }

  .scroll-prompt-pill span {
    font-size: 0.62rem;
  }
}