/* We Space Design — Interior Design Studio */
:root {
  --color-bg: #faf8f5;
  --color-bg-alt: #f0ebe3;
  --color-surface: #ffffff;
  --color-text: #1a1814;
  --color-text-muted: #5c574f;
  --color-accent: #8b7355;
  --color-accent-dark: #6b5740;
  --color-border: #e5dfd6;
  --font-serif: "Cormorant Garamond", "Noto Serif TC", Georgia, serif;
  --font-sans: "DM Sans", "Noto Sans TC", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 4px;
  --shadow: 0 4px 24px rgba(26, 24, 20, 0.08);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 80px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.lead {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 42ch;
}

/* Layout */
.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

.section {
  padding-block: var(--space-2xl);
}

.section--alt {
  background: var(--color-bg-alt);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
  transition: background var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  background: rgba(250, 248, 245, 0.98);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}

/* 公司 logo 圖（例如 images/ws_logo_final.png），保持高度、寬度按比例 */
.logo__img {
  display: block;
  flex-shrink: 0;
  max-height: 70px;
  width: auto;
  max-width: min(400px, 65vw);
  object-fit: contain;
  margin-left: 0.5rem;
}

.logo--footer .logo__img {
  max-height: 52px;
  max-width: min(300px, 78vw);
  border-radius: var(--radius);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.25);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  position: relative;
  padding-block: 4px;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__link.active {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
}

.btn--outline:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn--accent {
  background: var(--color-accent);
  color: white;
}

.btn--accent:hover {
  background: var(--color-accent-dark);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

/* 首頁 Hero：淺色主題 + 流體畫布 */
#hero-section.hero--fluid {
  background-color: #fcfbf9;
}

#fluid-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1; /* 【修改呢度】：設為負數，確保流體永遠喺最底層，唔會遮住文字 */
  display: block;
  pointer-events: none; /* 【建議修改】：既然你唔用粒子，流體背景亦唔需要捕捉滑鼠點擊，設為 none 可以令文字更容易點擊 */
  opacity: 0.92;
}

.hero__content-layer {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.hero__content-layer a,
.hero__content-layer button {
  pointer-events: auto;
}

.hero__subtitle {
  display: block;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  color: #8b7355;
  margin-top: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.hero__content {
  animation: fadeUp 1s ease forwards;
}

.hero__visual {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  overflow: hidden;
  animation: fadeUp 1s 0.2s ease forwards;
  opacity: 0;
}

.hero__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__badge {
  position: absolute;
  bottom: var(--space-md);
  left: calc(-1 * var(--space-md));
  background: var(--color-surface);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow);
  max-width: 220px;
}

.hero__badge strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-accent);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding-block: var(--space-xl);
  border-block: 1px solid var(--color-border);
}

.stat__number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--color-accent);
}

.stat__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body {
  padding: var(--space-md);
}

.card__tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

/* Service tiers */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.tier {
  background: var(--color-surface);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.tier:hover,
.tier.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow);
}

.tier.featured {
  position: relative;
}

.tier__badge {
  position: absolute;
  top: -12px;
  right: var(--space-md);
  background: var(--color-accent);
  color: white;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  text-transform: uppercase;
}

.tier__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.tier__list {
  margin-top: var(--space-md);
}

.tier__list li {
  padding: var(--space-xs) 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.tier__list li::before {
  content: "✓";
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* Filter */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* Project card */
.project-card {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.project-card.hidden {
  display: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  position: relative;
}

.project-card--large {
  grid-column: span 2;
  grid-row: span 2;
}

.project-card--large .card__image {
  aspect-ratio: 16/10;
}

/* CTA Banner */
.cta-banner {
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-xl);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.cta-banner h2 {
  color: inherit;
}

.cta-banner .lead {
  color: rgba(250, 248, 245, 0.75);
}

/* Form */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-surface);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-message {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  margin-top: var(--space-md);
  display: none;
}

.form-message.success {
  display: block;
  background: #e8f5e9;
  color: #2e7d32;
}

.form-message.error {
  display: block;
  background: #ffebee;
  color: #c62828;
}

/* 聯絡頁表格 */
.contact-form__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.contact-form__submit {
  margin-top: var(--space-sm);
}

/* Contact layout */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
}

.contact-info__item {
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.contact-info__item h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

/* Page header */
.page-hero {
  padding-top: calc(var(--header-h) + var(--space-2xl));
  padding-bottom: var(--space-xl);
  background: var(--color-bg-alt);
}

.page-hero__inner {
  max-width: 640px;
}

/* About */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.about-image {
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.value-item {
  padding: var(--space-md);
  border-left: 2px solid var(--color-accent);
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}

.process-step {
  position: relative;
  padding-top: var(--space-lg);
}

.process-step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--color-border);
  position: absolute;
  top: 0;
  left: 0;
  line-height: 1;
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

/* Factory Gallery */
.factory-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.factory-gallery__item {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.factory-gallery__item:hover {
  transform: translateY(-4px);
}

.factory-gallery__item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.factory-gallery__caption {
  padding: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text);
  text-align: center;
  font-weight: 500;
}

/* Factory Link Card */
.factory-link-card {
  display: block;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-decoration: none;
  transition: var(--transition);
  height: 100%;
  box-shadow: var(--shadow);
}

.factory-link-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(26, 24, 20, 0.12);
}

.factory-link-card__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
}

.team-member__photo {
  aspect-ratio: 3/4;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-sm);
  background: var(--color-bg-alt);
}

.team-member__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter var(--transition);
}

.team-member:hover .team-member__photo img {
  filter: grayscale(0%);
}

.team-member__role {
  font-size: 0.8125rem;
  color: var(--color-accent);
}

/* Footer */
.footer {
  background: var(--color-text);
  color: var(--color-bg);
  padding-block: var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.footer .logo {
  margin-bottom: var(--space-sm);
}

.footer p {
  font-size: 0.875rem;
  color: rgba(250, 248, 245, 0.6);
}

.footer h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  color: rgba(250, 248, 245, 0.5);
}

.footer a {
  display: block;
  font-size: 0.875rem;
  color: rgba(250, 248, 245, 0.8);
  padding: 0.25rem 0;
  transition: color var(--transition);
}

.footer a:hover {
  color: var(--color-bg);
}

.footer__bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(250, 248, 245, 0.15);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: rgba(250, 248, 245, 0.4);
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero__grid,
  .about-split,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .tier-grid,
  .projects-grid,
  .values-grid,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats,
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-card--large {
    grid-column: span 1;
    grid-row: span 1;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    border-bottom: 1px solid var(--color-border);
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }

  .card-grid,
  .tier-grid,
  .projects-grid,
  .values-grid,
  .team-grid,
  .stats,
  .process-steps {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    order: -1;
    max-height: 50vh;
    aspect-ratio: 16/10;
  }

  .hero__badge {
    left: var(--space-sm);
    bottom: var(--space-sm);
  }
}

/* ==========================================================================
   浚弘設計專屬 — 完美不變形 WhatsApp 懸浮按鈕（黃金比例精裝版）
   ========================================================================== */
   .whatsapp-float {
    position: fixed !important;
    bottom: 50px !important;  /* 【已微調】移高到 50px，留白高級，完全唔貼底 */
    right: 40px !important;   /* 保持優雅留白 */
    
    /* 【核心微調】縮小背景圓圈，更有高級感 */
    width: 56px !important;   /* 由 60px -> 56px */
    height: 56px !important;  /* 由 60px -> 56px */
    
    z-index: 99999 !important;
    display: flex !important;          /* flex 置中 */
    align-items: center !important;
    justify-content: center !important;
    background-color: #25d366 !important; /* 正宗綠色 */
    border-radius: 50% !important;        /* 完美圓形 */
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2) !important; /* 柔和立體陰影 */
    cursor: pointer !important;
    transition: transform 0.3s ease !important;
  }
  
  /* 【核心微調】精准控制並加大內部白色電話圖標的大小 */
  .whatsapp-float .whatsapp-float__svg {
    width: 38px !important;  /* 由 34px -> 38px，電話睇得更清楚 */
    height: 38px !important; /* 由 34px -> 38px */
    display: block !important;
  }
  
  /* 滑鼠移上去放大效果 */
  .whatsapp-float:hover {
    transform: scale(1.1) !important;
  }
  
  /* RWD 手機版自動縮小 */
  @media (max-width: 768px) {
    .whatsapp-float {
      bottom: 25px !important;
      right: 25px !important;
      width: 48px !important;  /* 手機版背景圓圈也縮小 */
      height: 48px !important;
    }
    .whatsapp-float .whatsapp-float__svg {
      width: 32px !important; /* 手機版圖標相對調大 */
      height: 32px !important;
    }
  }