/* ============================================
   William 個人官方網站
   Theme: Quiet Arch Organic Luxury
   ============================================ */

:root{
  --bg: #E8E1D4;
  --text: #302D29;
  --accent: #756653;
  --text-secondary: #574A3C;
  --surface-secondary: #CEC4B5;
  --surface-highlight: #F2EFE8;
  --botanical: #555747;

  --font-serif: "Noto Serif TC", "Georgia", serif;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;

  --container-w: 1120px;
  --radius-arch: 999px 999px 0 0;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

.container{
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 28px;
}

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

h1,h2,h3{
  font-family: var(--font-serif);
  font-weight: 500;
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}

p{ margin: 0 0 16px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 16px;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  transition: all .25s ease;
  cursor:pointer;
}
.btn-small{ padding: 9px 20px; font-size: 14px; }

.btn-primary{
  background: var(--text);
  color: var(--surface-highlight);
}
.btn-primary:hover{ background: var(--accent); }

.btn-outline{
  border-color: var(--text);
  color: var(--text);
}
.btn-outline:hover{ background: var(--text); color: var(--surface-highlight); }

.btn-ghost{
  color: var(--text);
  border-color: transparent;
}
.btn-ghost:hover{ color: var(--accent); }

.text-link{
  display:inline-block;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  font-size: 15px;
  color: var(--text-secondary);
}

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top:0;
  z-index: 100;
  background: rgba(229,224,213,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--surface-secondary);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.logo{
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 0.06em;
}
.logo span{ color: var(--accent); font-style: italic; }

.main-nav{ display:flex; gap: 32px; }
.nav-link{ font-size: 16px; letter-spacing: 0.04em; }
.nav-link:hover{ color: var(--accent); }

.header-cta{ display:flex; align-items:center; gap: 12px; }

.nav-toggle{
  display:none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background:none; border:none; cursor:pointer;
}
.nav-toggle span{
  width: 100%; height: 1px; background: var(--text);
}

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 120px 0 100px;
  overflow: hidden;
  text-align: center;
}
.hero-arch{
  position:absolute;
  inset:0;
  z-index:0;
}
.hero-arch svg{ width:100%; height:100%; }
.hero-arch.bottom{ transform: rotate(180deg); }

.hero-inner{
  position: relative;
  z-index: 1;
  max-width: 780px;
}
.eyebrow{
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-title{
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.35;
  margin-bottom: 24px;
}
.hero-sub{
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 40px;
}
.hero-actions{ display:flex; gap: 16px; justify-content:center; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section{ padding: 100px 0; }
.section-label{
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title{ font-size: clamp(26px, 3.4vw, 38px); }
.lead{ font-size: 19px; color: var(--text-secondary); max-width: 640px; }
.body-text{ font-size: 17px; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }

/* ---------- About split ---------- */
.split{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items:center;
  margin-bottom: 80px;
}
.arch-frame{ position:relative; max-width: 340px; margin: 0 auto; }
.arch-photo{
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: top center;
  border-radius: 180px 180px 0 0;
  border: 1px solid var(--accent);
  padding: 8px;
}

.credentials{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.credential-card{
  background: var(--surface-highlight);
  border-radius: 24px;
  padding: 32px 24px;
  text-align:center;
}
.credential-index{
  display:inline-block;
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.credential-card h3{ font-size: 17px; margin-bottom: 8px; }
.credential-card p{ font-size: 15px; color: var(--text-secondary); margin:0; }

/* ---------- Services ---------- */
.services{ background: var(--surface-highlight); }
.service-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.service-card{
  background: var(--bg);
  border-radius: 24px;
  padding: 40px 32px;
  text-align:center;
}
.service-arch{ width: 90px; margin: 0 auto 24px; }
.service-card h3{ font-size: 20px; margin-bottom: 12px; }
.service-card p{ font-size: 16px; color: var(--text-secondary); margin:0; }

/* ---------- Results ---------- */
.placeholder-note{ font-style: italic; }
.case-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 56px 0 64px;
}
.case-card{
  border: 1px solid var(--surface-secondary);
  border-radius: 20px;
  padding: 32px;
}
.case-tag{
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--botanical);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.case-card h3{ font-size: 19px; margin-bottom: 10px; }
.case-desc{ font-size: 16px; color: var(--text-secondary); margin:0; }

.testimonial-row{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.testimonial{
  margin:0;
  background: var(--surface-highlight);
  border-radius: 20px;
  padding: 32px;
}
.testimonial p{ font-size: 17px; font-style: italic; margin-bottom: 16px; }
.testimonial cite{ font-size: 14px; color: var(--text-secondary); font-style: normal; }

/* ---------- Tools ---------- */
.tools{ background: var(--surface-highlight); }
.tool-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 56px;
}
.tool-card{
  background: var(--bg);
  border-radius: 24px;
  padding: 40px;
}
.tool-card h3{ font-size: 20px; margin-bottom: 6px; }
.tool-desc{ font-size: 15px; color: var(--text-secondary); margin-bottom: 24px; }
.tool-card-link{ display:flex; flex-direction:column; }
.tool-card-desc{ font-size: 16px; color: var(--text-secondary); flex-grow: 1; }
.tool-form{ display:flex; flex-direction:column; gap: 16px; }
.tool-form label{ font-size: 15px; color: var(--text-secondary); display:flex; flex-direction:column; gap:6px; }
.tool-form input{
  font-family: var(--font-sans);
  font-size: 16px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--surface-secondary);
  background: var(--surface-highlight);
  color: var(--text);
}
.tools .tool-card .tool-form input{ background: var(--bg); }
.tool-form button{ align-self: flex-start; margin-top: 4px; }
.tool-result{
  font-size: 16px;
  font-family: var(--font-serif);
  color: var(--botanical);
  min-height: 24px;
  margin: 4px 0 0;
}

/* ---------- Contact ---------- */
.contact{ position: relative; overflow:hidden; }
.contact .container{ position: relative; z-index: 1; }
.contact-grid{
  display:grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 48px;
  margin-top: 56px;
  align-items:start;
}
.contact-info{ display:flex; flex-direction:column; gap: 20px; }
.contact-item{
  display:flex;
  flex-direction:column;
  gap: 4px;
  padding: 24px;
  background: var(--surface-highlight);
  border-radius: 18px;
}
.contact-label{ font-size: 13px; letter-spacing: .1em; color: var(--text-secondary); text-transform:uppercase; }
.contact-value{ font-family: var(--font-serif); font-size: 21px; }

.contact-form{ display:flex; flex-direction:column; gap: 18px; }
.contact-form label{ display:flex; flex-direction:column; gap: 6px; font-size: 15px; color: var(--text-secondary); }
.contact-form input, .contact-form textarea{
  font-family: var(--font-sans);
  font-size: 16px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--surface-secondary);
  background: var(--surface-highlight);
  color: var(--text);
  resize: vertical;
}
.contact-form button{ align-self: flex-start; }
.form-note{ font-size: 14px; color: var(--text-secondary); margin:0; }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--text);
  color: var(--surface-highlight);
  padding: 48px 0;
  text-align:center;
}
.site-footer a{ text-decoration: underline; }
.site-footer p{ margin: 0 0 8px; font-size: 16px; }
.copyright{ opacity: .75; font-size: 13px; margin-top: 16px; }

/* ---------- Mobile CTA bar ---------- */
.mobile-cta-bar{
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 200;
  display:none;
  gap: 1px;
  background: var(--surface-secondary);
  box-shadow: 0 -4px 16px rgba(55,53,47,0.15);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.mcb-btn{
  flex: 1;
  text-align:center;
  padding: 16px 0;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--surface-highlight);
}
.mcb-line{ background: var(--botanical); }
.mcb-call{ background: var(--text); }

/* ---------- Responsive ---------- */
@media (max-width: 920px){
  .split{ grid-template-columns: 1fr; }
  .credentials{ grid-template-columns: repeat(2, 1fr); }
  .service-grid{ grid-template-columns: 1fr; }
  .case-grid{ grid-template-columns: 1fr; }
  .testimonial-row{ grid-template-columns: 1fr; }
  .tool-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .main-nav{
    position: absolute;
    top: 100%; left:0; right:0;
    flex-direction: column;
    background: var(--bg);
    padding: 24px 28px;
    border-bottom: 1px solid var(--surface-secondary);
    display:none;
    gap: 18px;
  }
  .main-nav.open{ display:flex; }
  .header-cta{ display:none; }
  .nav-toggle{ display:flex; }
  .mobile-cta-bar{ display:flex; }
  body{ padding-bottom: 64px; }
  .hero{ padding: 90px 0 70px; }
  .section{ padding: 72px 0; }
}