/* ====================================================
   Hải & Cộng sự — X.aladDin.vn
   Phong cách Apple: tối giản, typography lớn, mềm mại
   ==================================================== */
:root{
  --text:#1d1d1f;
  --text-2:#6e6e73;
  --text-3:#86868b;
  --bg:#ffffff;
  --bg-gray:#f5f5f7;
  --bg-gray2:#e8e8ed;
  --blue:#0071e3;
  --blue-hover:#0077ed;
  --teal:#0f766e;
  --teal-hover:#115e59;
  --dark:#1d1d1f;
  --border:rgba(0,0,0,.08);
  --radius-lg:28px;
  --radius-md:18px;
  --radius-pill:980px;
  --shadow-sm:0 4px 14px rgba(0,0,0,.06);
  --shadow-md:0 12px 32px rgba(0,0,0,.10);
  --shadow-lg:0 30px 60px rgba(0,0,0,.16);
  --font:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{font-family:var(--font);color:var(--text);line-height:1.5;background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:17px;}
a{text-decoration:none;color:var(--blue);}
a:hover{text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.15;font-weight:700;}

.container{max-width:1024px;margin:0 auto;padding:0 24px;}

/* ===== NAV — Apple glass ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(29,29,31,.72);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(255,255,255,.10);}
.nav .inner{max-width:1024px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:60px;}
.nav .brand{color:#fff;font-weight:600;font-size:1.02rem;letter-spacing:-.01em;display:flex;align-items:center;gap:8px;}
.nav .brand .logo{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,#7cffb2,#3cd0a5);display:inline-block;box-shadow:0 0 12px rgba(60,208,165,.8);}
.nav ul{display:flex;gap:30px;list-style:none;align-items:center;}
.nav a{color:rgba(255,255,255,.78);font-weight:500;font-size:.92rem;transition:color .2s;}
.nav a:hover{color:#fff;}
.nav .cta{color:#fff;background:var(--blue);padding:7px 16px;border-radius:var(--radius-pill);font-weight:600;}
.nav .cta:hover{background:var(--blue-hover);color:#fff;}
.menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.6rem;cursor:pointer;padding:4px 8px;}

/* ===== HERO — Apple dark hero ===== */
.hero{background:linear-gradient(180deg,#000000 0%,#1d1d1f 60%,#101013 100%);color:#fff;text-align:center;padding:150px 0 110px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;top:20%;left:50%;transform:translateX(-50%);width:900px;height:500px;background:radial-gradient(closest-side,rgba(0,113,227,.22),transparent 70%);pointer-events:none;}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);color:#f5f5f7;font-weight:500;font-size:.85rem;padding:7px 18px;border-radius:var(--radius-pill);letter-spacing:.01em;margin-bottom:28px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}
.hero h1{font-size:clamp(2.4rem,6vw,4.6rem);font-weight:700;letter-spacing:-.03em;line-height:1.06;max-width:820px;margin:0 auto;}
.hero h1 span{background:linear-gradient(120deg,#f5f5f7 0%,#a1a1a6 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero p.lead{margin:24px auto 0;font-size:clamp(1.1rem,2.4vw,1.5rem);color:#a1a1a6;max-width:680px;font-weight:400;}
.hero .cta{margin-top:38px;display:flex;flex-wrap:wrap;gap:16px;justify-content:center;}
.hero .meta{margin-top:44px;display:flex;flex-wrap:wrap;gap:26px;justify-content:center;color:#86868b;font-size:.95rem;}
.hero .meta div{display:flex;align-items:center;gap:8px;}

/* ===== BUTTONS — Apple pill ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:var(--radius-pill);font-weight:600;font-size:1.02rem;transition:all .25s ease;border:none;cursor:pointer;line-height:1;}
.btn:hover{transform:scale(1.03);}
.btn-phone{background:var(--blue);color:#fff;}
.btn-phone:hover{background:var(--blue-hover);box-shadow:0 8px 24px rgba(0,113,227,.35);}
.btn-outline{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}
.btn-outline:hover{background:rgba(255,255,255,.2);}
.btn-solid{background:var(--teal);color:#fff;}
.btn-solid:hover{background:var(--teal-hover);box-shadow:0 8px 24px rgba(15,118,110,.35);}

/* ===== SECTIONS — Apple spacing ===== */
section{padding:90px 0;}
.section-tag{display:inline-block;color:var(--blue);font-weight:600;font-size:.92rem;margin-bottom:14px;}
h2.section-h{font-size:clamp(1.9rem,4vw,3.2rem);font-weight:700;letter-spacing:-.025em;max-width:720px;}
.sub{color:var(--text-2);margin-top:14px;max-width:640px;font-size:1.1rem;}

/* Lợi ích — card Apple */
.benefits{background:var(--bg-gray);border-radius:var(--radius-lg);margin:0 24px;width:calc(100% - 48px);max-width:1024px;margin-left:auto;margin-right:auto;padding:90px 40px;}
.benefits .section-h{max-width:640px;}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;margin-top:44px;}
.card{background:var(--bg);border-radius:var(--radius-md);padding:34px 28px;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.card .ico{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#e6f7f0,#d1efea);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:20px;}
.card h3{font-size:1.25rem;font-weight:600;margin-bottom:10px;}
.card p{color:var(--text-2);font-size:1rem;line-height:1.6;}

/* Cam kết — dark section */
.commitment{background:#000;color:#fff;text-align:center;padding:110px 0;}
.commitment .section-tag{color:#2997ff;}
.commitment .section-h{color:#fff;margin:0 auto;}
.commitment .sub{color:#86868b;margin:16px auto 0;max-width:620px;}
.commitment .big{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700;letter-spacing:-.02em;background:linear-gradient(120deg,#f5f5f7,#a1a1a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-top:44px;}
.commitment .points{margin-top:36px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
.pill{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:10px 20px;border-radius:var(--radius-pill);font-size:.95rem;color:#f5f5f7;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}

/* Dịch vụ — danh sách Apple */
.services .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin-top:44px;}
.srv{border-radius:var(--radius-md);padding:40px 32px;position:relative;background:var(--bg-gray);overflow:hidden;transition:transform .3s ease;}
.srv:hover{transform:translateY(-4px);}
.srv .num{font-size:4rem;font-weight:700;color:rgba(0,0,0,.06);position:absolute;top:10px;right:22px;letter-spacing:-.04em;line-height:1;}
.srv h4{font-weight:600;font-size:1.3rem;margin-bottom:12px;}
.srv p{color:var(--text-2);font-size:1rem;line-height:1.6;}

/* ===== PAGE HEADER ===== */
.pagehead{background:#000;color:#fff;padding:130px 0 80px;text-align:center;}
.pagehead h1{font-size:clamp(2rem,5vw,3.6rem);font-weight:700;letter-spacing:-.025em;}
.pagehead p{color:#a1a1a6;margin-top:14px;font-size:1.15rem;max-width:600px;margin-left:auto;margin-right:auto;}

/* ===== TABS ===== */
.tabs{margin:56px 0 32px;display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start;}
.tab-btn{border:1px solid var(--border);background:var(--bg);padding:10px 22px;border-radius:var(--radius-pill);font-weight:500;color:var(--text-2);cursor:pointer;font-size:.95rem;transition:all .2s;}
.tab-btn.active{background:var(--dark);color:#fff;border-color:var(--dark);}
.tab-btn:not(.active):hover{background:var(--bg-gray);}

/* Tạm thời ẩn ngày đăng bài (ẩn CSS, markup giữ nguyên để dễ khôi phục) */
.postcard .date{display:none;}
.article .post-date{display:none;}

/* ===== TOOL CARDS (công cụ môi giới) ===== */
.tool-card{display:block;}
.qcard{background:var(--bg);border-radius:var(--radius-md);padding:28px;box-shadow:var(--shadow-sm);transition:box-shadow .3s ease;}
.qcard:hover{box-shadow:var(--shadow-md);}
.capbox{background:var(--bg-gray);border-radius:var(--radius-md);padding:20px;}
.capbox pre{font-family:inherit;}
.btn-sm{line-height:1.2;}

/* ===== POST CARDS ===== */
.postlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px;padding-bottom:90px;}
.postcard{border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease;background:var(--bg);}
.postcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.postcard .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--bg-gray);}
.postcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.postcard:hover .thumb img{transform:scale(1.05);}
.postcard .thumb .ph{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#a1a1a6;font-size:2.6rem;background:linear-gradient(135deg,#f5f5f7,#e8e8ed);}
.postcard .body{padding:24px 24px 26px;}
.postcard .cat{font-size:.82rem;font-weight:600;color:var(--blue);letter-spacing:.02em;}
.postcard h3{font-size:1.22rem;font-weight:600;margin-top:8px;line-height:1.3;}
.postcard h3 a{color:var(--text);}
.postcard h3 a:hover{color:var(--blue);}
.postcard .excerpt{color:var(--text-2);font-size:.98rem;margin-top:10px;line-height:1.55;}
.postcard .date{color:var(--text-3);font-size:.85rem;margin-top:16px;}

/* ===== ARTICLE ===== */
.article{max-width:760px;margin:0 auto;padding:120px 24px 90px;}
.article .cat{color:var(--blue);font-weight:600;font-size:.9rem;letter-spacing:.02em;}
.article h1.title{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;letter-spacing:-.025em;margin-top:10px;line-height:1.12;}
.article .meta{color:var(--text-3);font-size:.95rem;margin:18px 0 30px;}
.article .cover{border-radius:var(--radius-lg);margin-bottom:34px;box-shadow:var(--shadow-lg);width:100%;aspect-ratio:16/9;object-fit:cover;}
.article .cover-fallback{aspect-ratio:16/9;border-radius:var(--radius-lg);background:linear-gradient(135deg,#147ee0,#0f766e);display:flex;align-items:center;justify-content:center;color:#fff;font-size:3rem;margin-bottom:34px;}
.article .content{font-size:1.08rem;line-height:1.75;color:#333336;}
.article .content h2{font-size:1.7rem;font-weight:700;margin:44px 0 16px;letter-spacing:-.02em;}
.article .content h3{font-size:1.3rem;font-weight:700;margin:34px 0 12px;}
.article .content p,.article .content li{margin-bottom:18px;}
.article .content img{border-radius:var(--radius-lg);margin:20px 0;box-shadow:var(--shadow-md);width:100%;}
.article .content blockquote{border-left:4px solid var(--blue);padding:16px 24px;background:var(--bg-gray);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-2);margin:24px 0;font-size:1.05rem;}
.article .content ul,.article .content ol{padding-left:26px;margin:16px 0;}
.article .gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0;}
.article .gallery img{margin:0;width:100%;height:220px;object-fit:cover;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:transform .3s;}
.article .gallery img:hover{transform:scale(1.03);}

/* ===== CTA BOX ===== */
.ctabox{margin-top:56px;background:#000;border-radius:var(--radius-lg);padding:50px 40px;text-align:center;color:#fff;}
.ctabox h3{font-size:1.6rem;font-weight:700;}
.ctabox p{color:#a1a1a6;margin-top:12px;}
.ctabox .phone{font-size:2rem;font-weight:700;color:#2997ff;margin:20px 0;letter-spacing:.01em;}
.ctabox a.btn{margin-top:6px;}

/* ===== FINAL CTA ===== */
.final{background:linear-gradient(180deg,#000 0%,#1d1d1f 100%);color:#fff;text-align:center;padding:110px 0;}
.final h2.section-h{color:#fff;margin:0 auto;}
.final .sub{color:#86868b;margin-left:auto;margin-right:auto;}
.final .phone{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:700;letter-spacing:-.02em;margin-top:34px;}
.final .phone a{color:#fff;background:linear-gradient(120deg,#f5f5f7,#a1a1a6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.final .note{margin-top:20px;color:#86868b;max-width:560px;margin-left:auto;margin-right:auto;}

/* ===== FOOTER ===== */
footer{background:var(--bg-gray);color:var(--text-3);text-align:center;padding:40px 20px;font-size:.88rem;border-top:1px solid var(--border);}
footer a{color:var(--text-2);}
footer a:hover{color:var(--blue);}

/* ===== ZALO FLOAT ===== */
body{padding-bottom:0;}
.zalo-float{position:fixed;right:20px;bottom:20px;z-index:9999;width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(0,98,255,.40);transition:transform .2s ease;}
.zalo-float:hover{transform:scale(1.1);}
.zalo-float .zalo-ico{width:60px;height:60px;display:block;}
.zalo-tip{position:absolute;right:calc(100% + 14px);top:50%;transform:translateY(-50%);white-space:nowrap;background:rgba(29,29,31,.9);color:#fff;font-size:.84rem;font-weight:500;padding:8px 14px;border-radius:12px;opacity:0;pointer-events:none;transition:opacity .2s;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);}
.zalo-tip::after{content:"";position:absolute;left:100%;top:50%;transform:translateY(-50%);border:6px solid transparent;border-left-color:rgba(29,29,31,.9);}
.zalo-float:hover .zalo-tip{opacity:1;}
@keyframes zalo-ring{0%{box-shadow:0 0 0 0 rgba(0,98,255,.45)}70%{box-shadow:0 0 0 16px rgba(0,98,255,0)}100%{box-shadow:0 0 0 0 rgba(0,98,255,0)}}
.zalo-float{animation:zalo-ring 2.6s infinite;}

/* ===== FADE-IN ON SCROLL (an toàn: chỉ ẩn khi JS chạy) ===== */
.js-anim section,.js-anim .postcard,.js-anim .card,.js-anim .srv,.js-anim .article .content img{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.js-anim .appear{opacity:1;transform:none;}
.hero{opacity:1;transform:none;}
@media (prefers-reduced-motion: reduce){
  .js-anim section,.js-anim .postcard,.js-anim .card,.js-anim .srv{opacity:1;transform:none;transition:none;}
}

/* ===== RESPONSIVE ===== */
@media(max-width:768px){
  body{font-size:16px;}
  section{padding:64px 0;}
  .hero{padding:120px 0 80px;}
  .nav ul{position:fixed;top:60px;right:0;height:100vh;flex-direction:column;gap:6px;background:rgba(29,29,31,.96);padding:36px 48px;transform:translateX(100%);transition:transform .3s ease;margin:0;}
  .nav ul.open{transform:translateX(0);}
  .nav li{width:100%;text-align:center;}
  .nav a{font-size:1.15rem;padding:12px 8px;display:block;}
  .nav .cta{display:inline-block;margin-top:8px;}
  .menu-btn{display:block;}
  .benefits{margin:0 12px;width:calc(100% - 24px);padding:64px 24px;border-radius:20px;}
  .grid-3,.services .grid{grid-template-columns:1fr;}
  .postlist{grid-template-columns:1fr;}
  .container{padding:0 20px;}
  .commitment,.final{padding:80px 0;}
  .zalo-float{right:14px;bottom:16px;width:54px;height:54px;}
  .zalo-float .zalo-ico{width:54px;height:54px;}
  .article{padding:116px 20px 70px;}
  .tab-btn{padding:12px 22px;font-size:1rem;}
  .btn{padding:15px 30px;}
}