/* =========================================
   SYBEL 思蓓儿 — Brand Website
   Shared Styles
   ========================================= */

/* ========== FONTS ========== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@200;300;400;500;600&family=Josefin+Sans:wght@300;400;500;600&display=swap');

/* ========== RESET ========== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
*{cursor:default;user-select:none}
a,button,.clickable,input,textarea,select{cursor:pointer}

/* ========== CSS VARIABLES ========== */
:root{
  --black:#050505;
  --black-soft:#1a1a1a;
  --charcoal:#2a2a2a;
  --gray-300:#888;
  --gray-400:#666;
  --gray-500:#555;
  --gray-600:#444;
  --gray-800:#222;
  --cream:#f9f6f0;
  --cream-dark:#f0e8dc;
  --beige:#e6d7c3;
  --beige-dark:#d4c4ad;
  --sand:#c9b99a;
  --gold:#b8965a;
  --gold-light:#d4bc8a;
  --gold-bright:#e8d5a3;
  --dusty-blue:#8fa8c8;
  --dusty-blue-dark:#6b89ad;
  --pink-rose:#d4a5a5;
  --sage:#b8c9b8;
  --white:#fff;

  --font-serif:'Playfair Display',Georgia,'Times New Roman',serif;
  --font-sans:'Inter','Segoe UI',system-ui,sans-serif;
  --font-alt:'Josefin Sans','Inter',sans-serif;

  --ease-out:cubic-bezier(0.16,1,0.3,1);
  --ease-smooth:cubic-bezier(0.65,0,0.35,1);
}

/* ========== BASE ========== */
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--charcoal);
  background:var(--white);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 48px}
@media(max-width:768px){.container{padding:0 24px}}

/* ========== SECTION LABELS ========== */
.section-label{
  font-family:var(--font-alt);
  font-size:11px;
  font-weight:400;
  letter-spacing:4px;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:16px;
}
.section-title{
  font-family:var(--font-serif);
  font-size:clamp(36px,5vw,56px);
  font-weight:600;
  line-height:1.15;
  color:var(--charcoal);
}

/* ========== HEADER ========== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:18px 48px;
  display:flex;align-items:center;justify-content:space-between;
  transition:all 0.5s var(--ease-smooth);
}
.header.scrolled{
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  padding:10px 48px;
  box-shadow:0 1px 0 rgba(0,0,0,0.06);
}
.header.dark .header-nav a{color:rgba(255,255,255,0.65)}
.header.dark .header-nav a:hover{color:var(--white)}
.header.dark .header-logo-text{color:var(--white)}
.header.dark .header-logo-symbol{border-color:rgba(255,255,255,0.4);color:var(--white)}
.header.dark .header-logo-text span{color:rgba(255,255,255,0.4)}
@media(max-width:768px){.header,.header.scrolled{padding:14px 24px}}

.header-logo{
  display:flex;align-items:center;gap:12px;text-decoration:none;
}
.header-logo-symbol{
  width:38px;height:38px;
  border:2px solid var(--charcoal);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:20px;font-weight:700;
  color:var(--charcoal);transition:all 0.3s;
}
.header-logo-text{
  font-family:var(--font-serif);font-size:18px;font-weight:600;
  letter-spacing:2px;color:var(--charcoal);transition:color 0.3s;
}
.header-logo-text span{
  font-family:var(--font-sans);font-size:10px;font-weight:300;
  letter-spacing:2px;color:var(--gray-300);
  display:block;margin-top:-2px;
}

.header-nav{display:flex;gap:28px;align-items:center}
.header-nav a{
  font-family:var(--font-sans);font-size:12px;font-weight:400;
  letter-spacing:1.5px;text-transform:uppercase;text-decoration:none;
  color:var(--gray-400);transition:color 0.3s;position:relative;
}
.header-nav a::after{
  content:'';position:absolute;bottom:-4px;left:0;right:100%;
  height:1px;background:var(--gold);transition:right 0.4s var(--ease-out);
}
.header-nav a:hover{color:var(--charcoal)}
.header-nav a:hover::after{right:0}
.header.dark .header-nav a::after{background:var(--gold-light)}
@media(max-width:900px){.header-nav{gap:16px}}
@media(max-width:768px){.header-nav{display:none}}

/* ========== PAGE HERO ========== */
.page-hero{
  position:relative;height:50vh;min-height:360px;
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:brightness(0.35);
}
.page-hero-content{position:relative;z-index:2;text-align:center}
.page-hero-content .page-title{
  font-family:var(--font-serif);font-size:clamp(40px,6vw,72px);
  font-weight:600;color:var(--white);margin-bottom:12px;
}
.page-hero-content .page-sub{
  font-family:var(--font-alt);font-size:13px;font-weight:300;
  letter-spacing:4px;text-transform:uppercase;color:var(--gold-light);
}

/* ========== BUTTONS ========== */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 36px;border:1px solid rgba(255,255,255,0.25);
  background:transparent;color:var(--white);
  font-family:var(--font-sans);font-size:11px;font-weight:500;
  letter-spacing:3px;text-transform:uppercase;text-decoration:none;
  transition:all 0.5s var(--ease-out);
}
.btn:hover{background:var(--white);color:var(--black);border-color:var(--white)}
.btn-gold{
  border-color:var(--gold);color:var(--gold);
}
.btn-gold:hover{background:var(--gold);color:var(--white);border-color:var(--gold)}
.btn-charcoal{
  border-color:var(--charcoal);color:var(--charcoal);
}
.btn-charcoal:hover{background:var(--charcoal);color:var(--white)}

/* ========== FOOTER ========== */
.footer{
  background:var(--black);color:rgba(255,255,255,0.5);
  padding:80px 0 36px;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;
  gap:48px;margin-bottom:56px;
}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
.footer-brand .footer-symbol{
  width:44px;height:44px;
  border:2px solid rgba(255,255,255,0.2);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-serif);font-size:22px;font-weight:700;
  color:var(--white);margin-bottom:16px;
}
.footer-brand p{
  font-size:13px;font-weight:300;line-height:1.8;
  color:rgba(255,255,255,0.35);max-width:280px;
}
.footer-column h4{
  font-family:var(--font-alt);font-size:11px;font-weight:500;
  letter-spacing:2px;text-transform:uppercase;
  color:var(--white);margin-bottom:20px;
}
.footer-column a{
  display:block;font-size:13px;font-weight:300;
  color:rgba(255,255,255,0.35);text-decoration:none;
  margin-bottom:10px;transition:color 0.3s;
}
.footer-column a:hover{color:var(--white)}
.footer-bottom{
  padding-top:28px;border-top:1px solid rgba(255,255,255,0.06);
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:12px;
}
@media(max-width:768px){.footer-bottom{flex-direction:column;text-align:center}}
.footer-bottom p{font-size:12px;font-weight:300;color:rgba(255,255,255,0.25)}
.footer-bottom .icp{font-size:12px;font-weight:300;color:rgba(255,255,255,0.25)}
.footer-bottom .icp a{color:rgba(255,255,255,0.35);text-decoration:none;transition:color 0.3s}
.footer-bottom .icp a:hover{color:var(--gold-light)}

/* ========== REVEAL ========== */
.reveal{opacity:0;transform:translateY(40px);transition:opacity 0.8s var(--ease-out),transform 0.8s var(--ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:0.1s}
.reveal-d2{transition-delay:0.2s}
.reveal-d3{transition-delay:0.3s}
.reveal-d4{transition-delay:0.4s}

/* ========== BACK TO TOP ========== */
.back-top{
  position:fixed;bottom:32px;right:32px;z-index:100;
  width:48px;height:48px;
  border:1px solid var(--gray-300);background:var(--white);
  display:flex;align-items:center;justify-content:center;
  text-decoration:none;font-size:18px;color:var(--charcoal);
  opacity:0;transform:translateY(20px);
  transition:all 0.4s var(--ease-out);
  pointer-events:none;
}
.back-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}
.back-top:hover{border-color:var(--gold);color:var(--gold)}

/* ========== LOADING ANIMATION ========== */
.page-transition{
  position:fixed;inset:0;z-index:9999;
  background:var(--black);
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;opacity:0;
  transition:opacity 0.4s var(--ease-smooth);
}
.page-transition.active{opacity:1;pointer-events:auto}
.page-transition .loader{
  width:24px;height:24px;
  border:2px solid rgba(255,255,255,0.1);
  border-top-color:var(--gold-light);
  border-radius:50%;
  animation:spin 0.8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ========== HAMBURGER ========== */
.hamburger{
  display:none;background:none;border:none;
  width:28px;height:20px;flex-direction:column;justify-content:space-between;
  cursor:pointer;z-index:1001;
}
.hamburger span{
  display:block;width:100%;height:2px;background:var(--charcoal);
  transition:transform 0.3s;
}
.header.dark .hamburger span{background:var(--white)}
@media(max-width:768px){.hamburger{display:flex}}

.mobile-nav{
  display:none;position:fixed;inset:0;z-index:999;
  background:rgba(255,255,255,0.98);
  backdrop-filter:blur(16px);
  flex-direction:column;align-items:center;justify-content:center;gap:28px;
}
.mobile-nav.open{display:flex}
.mobile-nav a{
  font-family:var(--font-serif);font-size:28px;font-weight:400;
  color:var(--charcoal);text-decoration:none;
}
.mobile-nav-close{
  position:absolute;top:24px;right:24px;
  background:none;border:none;font-size:24px;color:var(--charcoal);
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
}