/*
Theme Name: Book24h
Theme URI: https://book24h.vn/
Author: Book24h
Description: Theme WordPress nhẹ cho Book24h.vn — giao diện đặt vé máy bay: hero slider ảnh thực tế, form báo giá, bảng giá theo tab, lợi ích, FAQ, đánh giá, CTA. Tối ưu tốc độ, mobile, SEO.
Version: 2.6.0
Requires at least: 5.8
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: book24h
*/

:root{
  --blue:#1B4BA6; --blue-dark:#0d2c6b; --orange:#F58220; --orange-dark:#d96a08;
  --dark:#14264d; --ink:#1c2b4a; --muted:#5a6b8c; --line:#e6ebf5; --bg:#f4f6fb;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;color:var(--ink);line-height:1.6;background:#fff}
img{max-width:100%;height:auto}
a{color:var(--blue)}
.b24-wrap{max-width:1140px;margin:0 auto;padding:0 16px}

/* Topbar */
.b24-topbar{background:var(--dark);color:#fff;font-size:13.5px}
.b24-topbar .b24-wrap{display:flex;justify-content:space-between;align-items:center;padding-top:7px;padding-bottom:7px}
.b24-topbar a{color:#fff;text-decoration:none}
.b24-topbar .b24-hot{font-weight:800;color:#ffd9ad;white-space:nowrap}
.b24-tcontacts{display:flex;gap:16px;align-items:center}

/* Header */
.b24-header{background:#fff;box-shadow:0 2px 14px rgba(20,40,90,.08);position:sticky;top:0;z-index:50}
.b24-header .b24-wrap{display:flex;align-items:center;gap:20px;padding-top:10px;padding-bottom:10px}
.b24-logo img{height:52px;width:auto;display:block}
.b24-nav{margin-left:auto}
.b24-nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}
.b24-nav a{text-decoration:none;color:var(--ink);font-weight:600;font-size:15px}
.b24-nav a:hover{color:var(--orange)}
.b24-header .b24-header-cta{white-space:nowrap}
.b24-burger{display:none;background:none;border:none;font-size:28px;cursor:pointer;color:var(--dark);margin-left:auto}

/* Buttons */
.b24-btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:700;font-size:15.5px;text-decoration:none;border:none;cursor:pointer;transition:transform .15s, box-shadow .15s}
.b24-btn:hover{transform:translateY(-2px)}
.b24-btn-orange{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(245,130,32,.4)}
.b24-btn-blue{background:var(--blue);color:#fff}
.b24-btn-white{background:#fff;color:var(--blue)}
.b24-btn-outline-w{border:2px solid #fff;color:#fff;background:transparent}

/* Values strip */
.b24-values{background:#fff;border-bottom:1px solid var(--line)}
.b24-values .b24-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:16px;padding-bottom:16px}
.b24-value{display:flex;align-items:center;gap:12px}
.b24-value .b24-vi{width:46px;height:46px;flex:0 0 46px;border-radius:14px;background:#eaf0fd;display:flex;align-items:center;justify-content:center}
.b24-value .b24-vi svg{width:26px;height:26px;stroke:var(--blue);fill:none;stroke-width:1.8}
.b24-value b{display:block;font-size:14.5px;color:var(--dark)}
.b24-value small{color:var(--muted);font-size:12.5px}

/* Hero slider */
.b24-hero{position:relative;overflow:hidden;background:var(--dark)}
.b24-slide{position:absolute;inset:0;opacity:0;transition:opacity .8s;background-size:cover;background-position:center}
.b24-slide.on{opacity:1;position:relative}
.b24-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,25,60,.78) 20%,rgba(10,25,60,.25) 60%,rgba(10,25,60,.05))}
.b24-slide-in{position:relative;z-index:2;color:#fff;padding:88px 0 120px;max-width:640px}
.b24-kicker{display:inline-block;background:var(--orange);color:#fff;font-size:12.5px;font-weight:800;letter-spacing:1px;text-transform:uppercase;padding:7px 16px;border-radius:999px;margin-bottom:16px}
.b24-hero h1{font-size:clamp(28px,4.6vw,40px);line-height:1.22;margin:0 0 12px;color:#fff}
.b24-hero p{font-size:17px;opacity:.93;margin:0 0 26px}
.b24-hero .b24-btns{display:flex;gap:12px;flex-wrap:wrap}
.b24-dots{position:absolute;z-index:3;bottom:86px;left:0;right:0;display:flex;gap:8px;justify-content:center}
.b24-dots button{width:11px;height:11px;border-radius:50%;border:none;background:rgba(255,255,255,.45);cursor:pointer;padding:0}
.b24-dots button.on{background:#fff;width:30px;border-radius:99px}

/* Lead form */
.b24-lead{margin-top:-64px;position:relative;z-index:5}
.b24-lead-card{background:#fff;border-radius:18px;box-shadow:0 14px 44px rgba(13,44,107,.18);padding:26px;display:grid;grid-template-columns:1.1fr 2fr;gap:22px;align-items:center}
.b24-lead-card h2{margin:0 0 6px;font-size:21px;color:var(--dark)}
.b24-lead-card p{margin:0;color:var(--muted);font-size:14px}
.b24-lead-form{display:grid;grid-template-columns:1fr 1fr 1.4fr auto;gap:10px}
.b24-lead-form input{padding:13px 14px;border:1.5px solid var(--line);border-radius:12px;font-size:14.5px;width:100%}
.b24-lead-form input:focus{outline:none;border-color:var(--blue)}

/* Sections */
.b24-sec{padding:64px 0}
.b24-sec.alt{background:var(--bg)}
.b24-sec-title{text-align:center;font-size:28px;margin:0 0 8px;color:var(--dark)}
.b24-sec-sub{text-align:center;color:var(--muted);margin:0 0 32px;font-size:15.5px}
.b24-update{text-align:center;color:var(--muted);font-size:13.5px;margin:-20px 0 22px}

/* Price tabs */
.b24-tabs{display:flex;gap:8px;justify-content:center;margin-bottom:24px;flex-wrap:wrap}
.b24-tab{border:2px solid var(--blue);background:#fff;color:var(--blue);font-weight:700;padding:10px 30px;border-radius:999px;cursor:pointer;font-size:15px}
.b24-tab.on{background:var(--blue);color:#fff}
.b24-pane{display:none}
.b24-pane.on{display:block;animation:b24fade .3s}
@keyframes b24fade{from{opacity:0}to{opacity:1}}
.b24-table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 2px 14px rgba(20,40,90,.08);font-size:15px}
.b24-table th{background:var(--blue);color:#fff;text-align:left;padding:14px 18px}
.b24-table td{padding:12px 18px;border-bottom:1px solid var(--line)}
.b24-table tr:last-child td{border-bottom:none}
.b24-table tr:nth-child(even) td{background:#f8faff}
.b24-price{font-weight:800;color:var(--orange);font-size:17px;white-space:nowrap}
.b24-finenote{text-align:center;color:var(--muted);font-size:13px;margin-top:14px}

/* Benefits */
.b24-grid6{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.b24-bcard{background:#fff;border-radius:16px;padding:26px 22px;box-shadow:0 2px 14px rgba(20,40,90,.07);border-top:4px solid var(--blue)}
.b24-bcard .b24-bi{width:52px;height:52px;border-radius:16px;background:#eaf0fd;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.b24-bcard .b24-bi svg{width:28px;height:28px;stroke:var(--blue);fill:none;stroke-width:1.8}
.b24-bcard h3{margin:0 0 8px;font-size:17px;color:var(--dark)}
.b24-bcard p{margin:0;font-size:14.5px;color:var(--muted)}

/* Services */
.b24-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.b24-scard{background:#fff;border-radius:16px;overflow:hidden;box-shadow:0 2px 14px rgba(20,40,90,.08);text-decoration:none;color:var(--ink);display:block;transition:transform .15s}
.b24-scard:hover{transform:translateY(-4px)}
.b24-scard .b24-si{height:150px;background-size:cover;background-position:center}
.b24-scard .b24-sb{padding:20px}
.b24-scard h3{margin:0 0 8px;font-size:17px;color:var(--dark)}
.b24-scard p{margin:0 0 10px;font-size:14px;color:var(--muted)}
.b24-scard .b24-link{color:var(--orange);font-weight:700;font-size:14px}
.b24-links{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:22px}
.b24-links a{color:var(--blue);font-size:13.5px;font-weight:600;text-decoration:none;background:#eaf0fd;padding:9px 16px;border-radius:999px}

/* Steps */
.b24-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.b24-step{background:#fff;border-radius:16px;padding:28px 18px;text-align:center;box-shadow:0 2px 14px rgba(20,40,90,.07)}
.b24-step .b24-n{width:48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;font-weight:800;font-size:21px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.b24-step h3{margin:0 0 6px;font-size:16px}
.b24-step p{margin:0;font-size:13.5px;color:var(--muted)}

/* Airlines */
.b24-air{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.b24-air span{background:#fff;border:1.5px solid #dbe3f2;border-radius:999px;padding:10px 22px;font-weight:700;font-size:14px;color:var(--blue)}

/* Testimonials */
.b24-testi{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.b24-tcard{background:#fff;border-radius:16px;padding:24px;box-shadow:0 2px 14px rgba(20,40,90,.07)}
.b24-stars{color:var(--orange);letter-spacing:3px;margin-bottom:10px;font-size:17px}
.b24-tcard p{font-size:14.5px;color:#3c4c6e;margin:0 0 14px;font-style:italic}
.b24-tcard .b24-who{font-weight:700;font-size:14px;color:var(--dark)}

/* FAQ */
.b24-faq{max-width:780px;margin:0 auto}
.b24-faq-item{background:#fff;border-radius:12px;margin-bottom:10px;box-shadow:0 2px 8px rgba(20,40,90,.06);overflow:hidden}
.b24-faq-q{padding:17px 20px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:15.5px;gap:12px}
.b24-faq-q::after{content:"+";font-size:24px;color:var(--orange);font-weight:400;flex:0 0 auto}
.b24-faq-item.open .b24-faq-q::after{content:"–"}
.b24-faq-a{display:none;padding:0 20px 18px;font-size:14.5px;color:#3c4c6e}
.b24-faq-item.open .b24-faq-a{display:block}

/* CTA banner */
.b24-cta{position:relative;border-radius:22px;overflow:hidden;background-size:cover;background-position:center;margin:0}
.b24-cta::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(13,44,107,.9),rgba(13,44,107,.55))}
.b24-cta-in{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:center;padding:56px 40px;color:#fff}
.b24-cta h2{color:#fff;margin:0 0 10px;font-size:27px}
.b24-cta p{opacity:.92;margin:0 0 20px}
.b24-cta .b24-form-mini{background:#fff;border-radius:16px;padding:22px;color:var(--ink)}
.b24-cta .b24-form-mini h3{margin:0 0 12px;font-size:17px;color:var(--dark)}
.b24-cta .b24-form-mini input{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:14px;margin-bottom:10px}
.b24-cta .b24-form-mini .b24-btn{width:100%}

/* Page */
.b24-page{padding:48px 0}
.b24-page h1{font-size:30px;color:var(--dark)}

/* Footer */
.b24-footer{background:var(--dark);color:#cdd8ee;margin-top:0}
.b24-footer .b24-fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:52px 0 30px}
.b24-footer h4{color:#fff;margin:0 0 14px;font-size:16px}
.b24-footer p,.b24-footer li{font-size:14px;margin:0 0 8px}
.b24-footer ul{list-style:none;padding:0;margin:0}
.b24-footer a{color:#cdd8ee;text-decoration:none}
.b24-footer a:hover{color:#fff}
.b24-copy{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;font-size:13px;color:#93a3c4}

/* Floating buttons */
.b24-float{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:60}
.b24-float a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;text-decoration:none;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.b24-fzalo{background:#0068ff}
.b24-fzalo img{width:34px;height:34px;display:block}
.b24-fcall{background:var(--orange)}
/* Nút gọi tròn trên header mobile (ẩn trên desktop) */
.b24-mcall{display:none}
/* Bản sao khối giá trị cho mobile (ẩn trên desktop) */
.b24-values-m{display:none}

/* Responsive */
@media(max-width:960px){
  .b24-grid6{grid-template-columns:repeat(2,1fr)}
  .b24-grid4,.b24-steps{grid-template-columns:repeat(2,1fr)}
  .b24-testi{grid-template-columns:1fr 1fr}
  .b24-lead-card{grid-template-columns:1fr}
  .b24-lead-form{grid-template-columns:1fr 1fr}
  .b24-cta-in{grid-template-columns:1fr;padding:40px 24px}
  .b24-values .b24-wrap{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .b24-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:0 10px 24px rgba(0,0,0,.12)}
  .b24-nav.open{display:block}
  .b24-nav ul{flex-direction:column;gap:0;padding:8px 16px 16px}
  .b24-nav li{border-bottom:1px solid var(--line)}
  .b24-nav a{display:block;padding:12px 4px}
  .b24-burger{display:block}
  .b24-header .b24-header-cta{display:none}
  .b24-slide-in{padding:64px 0 110px}
  .b24-grid6,.b24-grid4,.b24-steps,.b24-testi{grid-template-columns:1fr}
  .b24-lead-form{grid-template-columns:1fr}
  .b24-footer .b24-fgrid{grid-template-columns:1fr}
}

/* Dropdown menu cha/con */
.b24-nav li{position:relative}
.b24-nav .menu-item-has-children>a::after{content:" ▾";font-size:11px;color:var(--orange)}
.b24-nav ul ul{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:250px;border-radius:12px;box-shadow:0 12px 30px rgba(13,44,107,.16);padding:8px;z-index:70}
.b24-nav ul ul li{border-bottom:none}
.b24-nav ul ul a{display:block;padding:11px 16px;white-space:nowrap;font-size:14.5px;border-radius:8px}
.b24-nav ul ul a:hover{background:#eaf0fd}
.b24-nav li:hover>ul{display:block}
@media(max-width:640px){
  .b24-nav ul ul{position:static;display:block;box-shadow:none;border-radius:0;padding:0 0 0 18px;min-width:0}
  .b24-nav ul ul a{padding:10px 4px}
}

/* Tinh chỉnh mobile & tablet cho gọn gàng */
@media(max-width:960px){
  .b24-sec{padding:52px 0}
}
@media(max-width:640px){
  .b24-sec{padding:44px 0}
  .b24-sec-title{font-size:23px}
  .b24-sec-sub{font-size:14px;margin-bottom:24px}
  /* Topbar kiểu baytot: nền xanh, thông tin xếp dọc */
  .b24-topbar{background:var(--blue);font-size:13px}
  .b24-topbar .b24-wrap{flex-direction:column;align-items:flex-start;gap:3px;padding-top:9px;padding-bottom:9px}
  .b24-tcontacts{flex-direction:column;align-items:flex-start;gap:3px;order:1}
  .b24-tcontacts .b24-hot{order:-1}
  .b24-tslogan{order:2;opacity:.92;font-size:12.5px}
  /* Header mobile: burger | logo giữa | nút gọi tròn */
  .b24-header .b24-wrap{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center}
  .b24-burger{grid-column:1;grid-row:1;margin-left:0;justify-self:start;font-size:26px}
  .b24-logo{grid-column:2;grid-row:1;justify-self:center}
  .b24-logo img{height:44px}
  .b24-mcall{display:flex;grid-column:3;grid-row:1;justify-self:end;width:52px;height:52px;border-radius:50%;background:var(--orange);color:#fff;align-items:center;justify-content:center;font-size:22px;text-decoration:none;box-shadow:0 6px 18px rgba(245,130,32,.4)}
  /* Khối giá trị: ẩn bản trên, hiện bản dưới banner */
  .b24-values:not(.b24-values-m){display:none}
  .b24-values-m{display:block;border-bottom:1px solid var(--line)}
  /* Khối giá trị: gọn, chữ không vỡ dòng xấu */
  .b24-values .b24-wrap{gap:14px 10px}
  .b24-value{align-items:flex-start;gap:10px}
  .b24-value .b24-vi{width:40px;height:40px;flex:0 0 40px;border-radius:12px}
  .b24-value .b24-vi svg{width:22px;height:22px}
  .b24-value b{font-size:13.5px;line-height:1.4}
  .b24-value small{font-size:11.5px;line-height:1.45;display:block;margin-top:2px}
  /* Hero: chữ co giãn mượt, nút xếp dọc dễ bấm */
  .b24-slide-in{padding:56px 0 104px}
  .b24-hero p{font-size:15.5px;margin-bottom:22px}
  .b24-hero .b24-btns{flex-direction:column;align-items:stretch}
  .b24-hero .b24-btns .b24-btn{text-align:center;width:100%}
  .b24-kicker{font-size:11.5px}
  .b24-dots{bottom:80px}
  /* Form + bảng giá */
  .b24-lead-card{padding:22px 18px}
  .b24-table th,.b24-table td{padding:10px 12px;font-size:14px}
  /* Nút nổi: nhỏ lại, gọn góc */
  .b24-float{right:14px;bottom:14px}
  .b24-float a{width:48px;height:48px}
  .b24-fzalo img{width:30px;height:30px}
  .b24-fcall{font-size:20px}
  .b24-cta-in{padding:36px 20px}
}