/**
 * HCF VISUAL LAB - Core Luxury Design System
 * Inspired by Apple Vision Pro Spatial UI & Dark Cyber Aesthetics
 */

:root {
  /* Brand Identity Tokens */
  --hcf-red: #C81015;
  --hcf-red-glow: rgba(200, 16, 21, 0.4);
  --hcf-gold: #D4AF37;
  --hcf-gold-glow: rgba(212, 175, 55, 0.35);
  --hcf-dark: #0A0A0C;
  --hcf-dark-elevated: #121216;
  --hcf-surface: rgba(255, 255, 255, 0.03);
  --hcf-surface-hover: rgba(255, 255, 255, 0.07);
  --hcf-border: rgba(255, 255, 255, 0.08);
  --hcf-border-hover: rgba(255, 255, 255, 0.22);
  --hcf-text-primary: #EDEDF0;
  --hcf-text-muted: #8E8E98;
  --hcf-blur: 24px;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: initial; /* Driven smoothly by Lenis */
}

body {
  font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--hcf-dark);
  color: var(--hcf-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* WebGL Canvas fixed background container */
#webgl-canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#webgl-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Ambient Radial Glow Gradients */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

.glow-red {
  top: -15vh;
  right: -10vw;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, var(--hcf-red-glow) 0%, transparent 70%);
}

.glow-gold {
  bottom: -20vh;
  left: -15vw;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--hcf-gold-glow) 0%, transparent 70%);
}

/* Apple Vision Pro Spatial Glassmorphism Elements */
.glass-nav {
  background: rgba(12, 12, 16, 0.65);
  backdrop-filter: blur(var(--hcf-blur));
  -webkit-backdrop-filter: blur(var(--hcf-blur));
  border-bottom: 1px solid var(--hcf-border);
  transition: background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.glass-nav.scrolled {
  background: rgba(8, 8, 10, 0.85);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.6);
}

.glass-card {
  background: var(--hcf-surface);
  backdrop-filter: blur(var(--hcf-blur));
  -webkit-backdrop-filter: blur(var(--hcf-blur));
  border: 1px solid var(--hcf-border);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.4s ease,
              background-color 0.4s ease,
              box-shadow 0.4s ease;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.glass-card:hover {
  background: var(--hcf-surface-hover);
  border-color: var(--hcf-border-hover);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7),
              0 0 24px -6px rgba(255, 255, 255, 0.05);
}

.glass-card:hover::before {
  opacity: 1;
}

.glass-pill {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--hcf-border);
  color: var(--hcf-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all 0.3s ease;
}

.glass-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.glass-pill.active {
  background: rgba(212, 175, 55, 0.15);
  border-color: var(--hcf-gold);
  color: #FFF;
}

.glass-input {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--hcf-border);
  color: var(--hcf-text-primary);
  border-radius: 1rem;
  padding: 0.85rem 1.25rem;
  width: 100%;
  font-size: 0.95rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  outline: none;
}

.glass-input:focus {
  border-color: var(--hcf-gold);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 16px -2px var(--hcf-gold-glow);
}

.glass-input::placeholder {
  color: var(--hcf-text-muted);
}

/* Luxury Gradient Typography */
.text-gradient-gold {
  background: linear-gradient(135deg, #FFF1BD 0%, #D4AF37 50%, #9A7B1C 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-red {
  background: linear-gradient(135deg, #FF6B6B 0%, #C81015 50%, #7D0509 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-silver {
  background: linear-gradient(135deg, #FFFFFF 0%, #B0B0B8 60%, #686870 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 3D Perspective & Tilt Card Support */
.perspective-container {
  perspective: 1000px;
}

.tilt-card {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.2s cubic-bezier(0.2, 0, 0.2, 1);
}

.tilt-inner {
  transform: translateZ(30px);
  transition: transform 0.2s cubic-bezier(0.2, 0, 0.2, 1);
}

/* Custom Interactive Cursor */
#custom-cursor,
#custom-cursor-follower {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  border-radius: 50%;
  z-index: 99999;
  mix-blend-mode: difference;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease, transform 0.15s ease-out;
}

#custom-cursor {
  width: 8px;
  height: 8px;
  background-color: #FFFFFF;
}

#custom-cursor-follower {
  width: 38px;
  height: 38px;
  border: 1.5px solid rgba(255, 255, 255, 0.75);
  background-color: transparent;
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              border-color 0.3s ease,
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Cursor Scale States */
body.cursor-hover #custom-cursor-follower {
  width: 64px;
  height: 64px;
  background-color: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.95);
}

body.cursor-view #custom-cursor-follower {
  width: 80px;
  height: 80px;
  background-color: rgba(212, 175, 55, 0.25);
  border-color: var(--hcf-gold);
}

body.cursor-view #custom-cursor {
  opacity: 0;
}

body.cursor-text #custom-cursor-follower {
  width: 4px;
  height: 28px;
  border-radius: 2px;
  background-color: var(--hcf-gold);
  border: none;
}

body.cursor-hidden #custom-cursor,
body.cursor-hidden #custom-cursor-follower {
  opacity: 0;
}

/* Hide on mobile / touch displays */
@media (pointer: coarse), (hover: none) {
  #custom-cursor,
  #custom-cursor-follower {
    display: none !important;
  }
}

/* Interactive Control Toggles (Sound & Language) */
.toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--hcf-surface);
  border: 1px solid var(--hcf-border);
  color: var(--hcf-text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toggle-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.08);
}

.toggle-btn.active {
  border-color: var(--hcf-gold);
  color: var(--hcf-gold);
  box-shadow: 0 0 14px -2px var(--hcf-gold-glow);
}

.sound-waves {
  display: flex;
  align-items: center;
  gap: 2.5px;
  height: 14px;
}

.sound-bar {
  width: 2px;
  background-color: currentColor;
  border-radius: 1px;
  transition: height 0.2s ease;
}

.sound-waves.playing .sound-bar:nth-child(1) { animation: wave 1s infinite ease-in-out 0.1s; }
.sound-waves.playing .sound-bar:nth-child(2) { animation: wave 1s infinite ease-in-out 0.3s; }
.sound-waves.playing .sound-bar:nth-child(3) { animation: wave 1s infinite ease-in-out 0.5s; }

@keyframes wave {
  0%, 100% { height: 4px; }
  50% { height: 14px; }
}

.sound-waves.muted .sound-bar {
  height: 3px !important;
  opacity: 0.4;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 7px;
}

::-webkit-scrollbar-track {
  background: var(--hcf-dark);
}

::-webkit-scrollbar-thumb {
  background: #282830;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb:hover {
  background: #3E3E4C;
}

/* GSAP Reveal State Placeholders */
.gsap-reveal {
  opacity: 0;
  transform: translateY(40px);
  will-change: opacity, transform;
}

.gsap-fade-in {
  opacity: 0;
  will-change: opacity;
}

/* Shared Glass Panel (used across all pages, previously undefined) */
.glass-panel {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.22);
}

/* Fullscreen modal backdrop (blog / contact modals reference it, previously undefined) */
.modal-backdrop {
  background: rgba(5, 5, 8, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

/* Native form controls on dark theme */
input[type="checkbox"], input[type="radio"] { accent-color: #C81015; }
select { color-scheme: dark; }
select option { background: #121216; color: #EDEDF0; }

/* iOS Safari：輸入框字級 <16px 會自動縮放頁面 */
@media screen and (max-width: 768px) {
  input, select, textarea, .glass-input { font-size: 16px !important; }
}

/* Services page: marquee + horizontal snap scroller */
.svc-marquee-track { display: inline-block; animation: svcMarquee 28s linear infinite; }
.svc-marquee-track span { display: inline-block; }
@keyframes svcMarquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.snap-x::-webkit-scrollbar { height: 6px; }
.snap-x::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }
@media (prefers-reduced-motion: reduce) { .svc-marquee-track { animation: none; } }

/* ===== 無標點排版：以空格分句，整句為單位換行（不拆字）===== */
body { line-break: strict; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; word-spacing: 0.12em; }
p, li, dd, dt, figcaption, blockquote, summary, label, .faq-content, .lw-body, .xv-detail, .mm-sub { text-wrap: pretty; word-break: keep-all; overflow-wrap: anywhere; word-spacing: 0.1em; }
.hm-h1 { word-spacing: 0; }
h1.kw, h2.kw, h3.kw, h4.kw { word-break: keep-all; overflow-wrap: anywhere; }
/* 手機不顯示音效提示（與底部 CTA 疊在一起） */
@media (max-width: 767px) { #hcf-sound-hud { display: none !important; } }

/* ===== 手機浮動 LINE 鈕（全站） ===== */
.hm-fab { display: none; }
@media (max-width: 767px) {
  .hm-fab {
    display: inline-flex; align-items: center; gap: 8px; position: fixed; right: 16px; bottom: 18px; z-index: 60;
    padding: 12px 16px 12px 14px; border-radius: 9999px; background: #06C755; color: #fff; text-decoration: none;
    font-size: 13px; font-weight: 800; letter-spacing: 0.04em; box-shadow: 0 16px 34px -12px rgba(6, 199, 85, 0.65);
    transform: translateY(var(--fab-y, 0)); transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  }
  .hm-fab svg { width: 20px; height: 20px; }
  .hm-fab.is-hidden { --fab-y: 90px; }
  .hm-fab:active { transform: scale(0.96); }
}
/* 手機：眉標膠囊縮字距 不換行 */
@media (max-width: 767px) {
  .rounded-full.font-mono.tracking-widest.uppercase { font-size: 10px; letter-spacing: 0.12em; white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; padding-left: 12px; padding-right: 12px; }
  .rounded-full.font-mono.tracking-widest.uppercase > span:first-child { flex: none; }
}
/* 選單打開時 收起浮動元件（托盤 / LINE 鈕 / 音效提示） */
body.mm-open .pr-tray, body.mm-open .hm-fab, body.mm-open #hcf-sound-hud, body.mm-open .pr-sticky { display: none !important; }