/*
Theme Name: Kiều Tiên
Theme URI: https://kieutien.vn
Author: Kiều Tiên (Đỗ Thị Kiều Tiên)
Description: Theme riêng cho thương hiệu đồ lót Kiều Tiên — blog-first, tông mint + champagne gold. Chuyển từ bản demo tĩnh (Cách A hybrid).
Version: 1.2
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
Text Domain: kieu-tien
*/

/* ============ BASE ============ */
:root{
  --mint-50:#F0FDFA; --mint-100:#CCFBF1; --mint-200:#99F6E4; --mint-300:#5EEAD4;
  --mint-400:#2DD4BF; --mint-500:#14B8A6; --mint-600:#0D9488; --mint-700:#0F766E;
  --mint-800:#115E59; --mint-900:#134E4A; --mint-950:#042F2E;
  --gold-light:#E8D5A8; --gold:#C9A961; --gold-deep:#9B7E3B; --gold-dark:#6B5429;
  --cream-50:#FFFCF7; --cream-100:#FFF7E8; --cream-200:#FBEFD9;
  --ink-900:#1A0B2E; --ink-700:#3E2A56;
  --grad:linear-gradient(135deg,#0D9488 0%,#14B8A6 40%,#5EEAD4 100%);
  --grad-deep:radial-gradient(circle at top left,#2DD4BF 0%,#0D9488 50%,#042F2E 100%);
  --shadow:0 12px 40px -12px rgba(15,118,110,.30);
  --shadow-lg:0 24px 60px -16px rgba(15,118,110,.40);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Be Vietnam Pro',system-ui,sans-serif;
  color:var(--ink-700);background:var(--cream-50);line-height:1.6;font-size:16px;
  background-image:
    radial-gradient(circle at 10% 0%,rgba(94,234,212,.28) 0%,transparent 40%),
    radial-gradient(circle at 90% 100%,rgba(20,184,166,.18) 0%,transparent 50%);
  background-attachment:fixed;
}
h1,h2,h3,.serif{font-family:'Playfair Display',serif}
img{max-width:100%;height:auto}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}
.kicker{font-family:'Be Vietnam Pro',sans-serif;font-style:normal;font-size:14px;font-weight:800;
  letter-spacing:.1em;text-transform:uppercase;color:var(--mint-600)}
.btn{display:inline-flex;align-items:center;gap:.5rem;border:none;cursor:pointer;
  font-family:'Be Vietnam Pro';font-weight:600;font-size:16px;border-radius:999px;
  padding:.75rem 1.6rem;transition:all .4s var(--ease)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:transparent;border:2px solid var(--mint-300);color:var(--mint-700)}
.btn-ghost:hover{background:var(--mint-50);border-color:var(--mint-400)}

/* ============ HEADER / NAV (dùng chung) ============ */
header.site-header{position:sticky;top:0;z-index:50;background:rgba(255,252,247,.82);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--mint-100)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:.6rem}
.avatar{width:53px;height:53px;border-radius:999px;flex:none;
  background:var(--grad);display:grid;place-items:center;color:#fff;
  font-family:'Playfair Display';font-weight:800;font-size:20px;
  box-shadow:0 0 0 2px #fff,0 6px 18px -6px rgba(15,118,110,.6);object-fit:cover;overflow:hidden}
.logo b{font-family:'Playfair Display';font-weight:800;font-size:24px;color:var(--mint-800);line-height:1.05;display:block}
.logo>span>span{font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--mint-500)}
.menu{display:flex;align-items:center;gap:1.6rem;font-weight:500;font-size:15.5px;color:var(--ink-700);list-style:none}
.menu>a,.menu>li>a,.has-sub>span{cursor:pointer;padding:.4rem 0;position:relative;white-space:nowrap;display:inline-block}
.menu a:hover,.has-sub:hover>span{color:var(--mint-700)}
.menu a.active{color:var(--mint-700);font-weight:700}
.has-sub{position:relative;list-style:none}
.has-sub .caret{font-size:.7em;opacity:.6}
.sub{position:absolute;top:100%;left:-12px;background:#fff;border:1px solid var(--mint-100);
  border-radius:16px;box-shadow:var(--shadow);padding:.5rem;min-width:230px;list-style:none;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .3s var(--ease)}
.has-sub:hover .sub{opacity:1;visibility:visible;transform:translateY(0)}
.sub a{display:block;padding:.6rem .8rem;border-radius:10px;font-size:15px}
.sub a:hover{background:var(--mint-50);color:var(--mint-800)}
.nav-cta{display:flex;align-items:center;gap:1rem}
.menu-btn{display:none}
@media(max-width:1080px){
  .nav{height:64px}
  .menu,.nav-cta .btn-ghost{display:none}
  .avatar{width:40px;height:40px}
  .logo b{font-size:19px}
  .logo>span>span{display:none}
  .nav-cta{gap:.5rem}
  .nav-cta .btn-primary{padding:.5rem .85rem;font-size:13.5px;gap:.35rem}
  .nav-cta .btn-primary svg{width:16px;height:16px}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--mint-50);
    border:1px solid var(--mint-100);border-radius:12px;min-width:44px;min-height:44px;
    padding:0;color:var(--mint-700);font-size:20px;line-height:1;cursor:pointer;flex:none}
  body.menu-open .menu{
    display:flex;flex-direction:column;align-items:stretch;
    position:fixed;top:64px;left:0;right:0;z-index:60;
    background:rgba(255,252,247,.98);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-top:1px solid var(--mint-100);box-shadow:0 20px 44px -14px rgba(15,118,110,.4);
    padding:6px 22px 20px;max-height:calc(100vh - 64px);overflow-y:auto;gap:0}
  body.menu-open .menu>a,body.menu-open .has-sub>span{
    display:block;padding:15px 4px;font-size:17px;font-weight:600;color:var(--mint-900);
    border-bottom:1px solid var(--mint-100);white-space:normal}
  body.menu-open .has-sub{display:block;position:static}
  body.menu-open .has-sub>span{display:flex;align-items:center;justify-content:space-between}
  body.menu-open .has-sub .sub{
    position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
    border:none;background:transparent;padding:2px 0 4px 14px;min-width:0}
  body.menu-open .has-sub .sub a{padding:12px 6px;font-size:15.5px;border-bottom:1px solid var(--mint-50)}
  body.menu-open .menu>a[href*="shopee"]{color:var(--mint-700);font-weight:800}
}

/* ============ SECTIONS (dùng chung) ============ */
section.block{padding:100px 0}
.center{text-align:center;max-width:720px;margin:0 auto}
h2.title{font-size:clamp(30px,3.6vw,44px);font-weight:800;color:var(--mint-900);line-height:1.25;letter-spacing:-.02em;margin:.8rem 0}
.sec-head{max-width:760px}
.page-head{text-align:center;max-width:720px;margin:0 auto;padding:64px 0 8px}
.page-head h1{font-size:clamp(32px,4vw,50px);font-weight:800;color:var(--mint-900);line-height:1.15;margin:.6rem 0 .8rem}
.page-head p{font-size:18px;color:var(--ink-700)}

/* ============ FOOTER (dùng chung) ============ */
footer.site-footer{padding:64px 0 32px;color:var(--ink-700)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;border-bottom:1px solid var(--mint-100)}
.foot h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--mint-700);margin-bottom:1rem}
.foot a{display:block;font-size:14.5px;padding:.25rem 0;opacity:.85}
.foot a:hover{color:var(--mint-700);opacity:1}
.foot p.desc{font-size:14.5px;margin:1rem 0;max-width:32ch;opacity:.8}
.copyright{text-align:center;padding-top:24px;font-size:13px;opacity:.6}
@media(max-width:900px){ .foot-grid{grid-template-columns:1fr 1fr} section.block{padding:64px 0} }
@media(max-width:560px){ .foot-grid{grid-template-columns:1fr} }

/* ============ MOBILE — giảm khoảng trống ============ */
@media(max-width:560px){
  .wrap{padding:0 18px}
  .btn{padding:.6rem 1.2rem;font-size:15px}
  section.block{padding:44px 0}
  .page-head{padding:34px 0 4px}
  .page-head h1{margin:.4rem 0 .6rem}
  .page-head p{font-size:16.5px}
  h2.title{margin:.5rem 0}
  footer.site-footer{padding:44px 0 24px}
}

/* ============ Thanh MUA HÀNG cố định đáy (chỉ điện thoại) ============ */
.mobile-buybar{display:none}
@media(max-width:760px){
  .mobile-buybar{
    display:flex;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:80;
    padding:8px 12px;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));
    background:rgba(255,252,247,.95);backdrop-filter:blur(10px);
    border-top:1px solid var(--mint-100);box-shadow:0 -6px 20px -8px rgba(15,118,110,.28)}
  .mobile-buybar a{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:.35rem;
    padding:13px 8px;border-radius:14px;font-weight:700;font-size:15px;line-height:1.1;text-align:center}
  .mbb-shopee{flex:1.55;background:var(--grad);color:#fff;box-shadow:var(--shadow)}
  .mbb-zalo{background:#fff;border:1.5px solid var(--mint-300);color:var(--mint-700)}
  body{padding-bottom:64px}
}

/* ============ WP core helpers ============ */
.screen-reader-text{position:absolute!important;clip:rect(1px,1px,1px,1px);width:1px;height:1px;overflow:hidden}
.aligncenter{display:block;margin:1rem auto}
.wp-caption{max-width:100%}