/* ===== WEBSITE TS.BS NGUYỄN ĐÌNH MINH — STYLE CHUNG ===== */
:root{
  --navy-deep:#0f2a4d;
  --navy:#163a66;
  --blue:#1f5ba0;
  --blue-bright:#2f7fd6;
  --blue-cyan:#39a0e0;
  --sky:#e8f1fb;
  --sky-2:#f4f9ff;
  --line:#d4e3f2;
  --ink:#13283f;
  --ink-soft:#4a6076;
  --gold:#b08948;
  --white:#fff;
  --maxw:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--ink);
  background:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased}
.serif{font-family:'Lora',Georgia,serif}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- HEADER ---- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;flex-direction:column;line-height:1.1}
.logo .name{font-family:'Lora',serif;font-weight:600;font-size:19px;color:var(--navy);letter-spacing:.02em}
.logo .sub{font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--blue-bright);font-weight:600}
.menu{display:flex;gap:28px;list-style:none;align-items:center}
.menu a{font-size:14.5px;font-weight:500;color:var(--ink);transition:.2s;padding:6px 0;position:relative}
.menu a:hover,.menu a.active{color:var(--blue-bright)}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--blue-bright)}
.btn-nav{background:var(--blue-bright);color:#fff!important;padding:10px 20px;border-radius:40px;font-weight:600}
.btn-nav:hover{background:var(--navy)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px}
.burger span{width:24px;height:2px;background:var(--navy);transition:.3s}

/* ---- BUTTONS ---- */
.btn{display:inline-block;background:linear-gradient(180deg,#3aa6e6,#2f7fd6);color:#fff;
  font-weight:700;font-size:15px;padding:14px 32px;border-radius:44px;border:none;cursor:pointer;
  transition:.25s;box-shadow:0 8px 24px rgba(47,127,214,.32)}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(47,127,214,.45)}
.btn-outline{background:transparent;border:1.5px solid var(--blue-bright);color:var(--blue-bright);box-shadow:none}
.btn-outline:hover{background:var(--blue-bright);color:#fff}

/* ---- SECTION HELPERS ---- */
section{padding:72px 0}
.eyebrow{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--blue-bright);font-weight:700;margin-bottom:12px}
.sec-title{font-size:32px;font-weight:800;color:var(--ink);letter-spacing:-.01em;line-height:1.25;margin-bottom:14px}
.sec-title .serif{font-style:italic;font-weight:500;color:var(--navy)}
.sec-title .hl{color:var(--blue-bright)}
.center{text-align:center}
.lead{font-size:17px;color:var(--ink-soft);max-width:640px;margin:0 auto}

/* ---- HERO ---- */
.hero{background:linear-gradient(160deg,#173d6b,#0f2a4d);color:#fff;position:relative;overflow:hidden;padding:90px 0}
.hero::before{content:"";position:absolute;top:-30%;right:-15%;width:60%;height:80%;
  background:radial-gradient(circle,rgba(57,160,224,.2),transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative}
.hero .eyebrow{color:#7fd0ff}
.hero h1{font-size:42px;font-weight:800;line-height:1.18;letter-spacing:-.02em;margin-bottom:18px}
.hero h1 .serif{display:block;font-weight:500;font-style:italic;color:#bfe3ff;font-size:34px;margin-top:6px}
.hero p{color:#cbdcef;font-size:16.5px;margin-bottom:28px;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{border-radius:16px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.3);
  background:repeating-linear-gradient(45deg,#1c3d63,#1c3d63 16px,#22456e 16px,#22456e 32px);
  min-height:360px;display:flex;align-items:center;justify-content:center;color:#7f99bd;font-size:14px;text-align:center;padding:20px}
.hero-stats{display:flex;gap:36px;margin-top:34px;position:relative;flex-wrap:wrap}
.hero-stats .stat .num{font-family:'Lora',serif;font-size:30px;font-weight:600;color:#7fd0ff;line-height:1}
.hero-stats .stat .lbl{font-size:12.5px;color:#9fbbdc;margin-top:5px;text-transform:uppercase;letter-spacing:.06em}

/* ---- CARD ---- */
.cards{display:grid;gap:22px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.cards.c2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;
  box-shadow:0 4px 16px rgba(15,42,77,.05);transition:.3s}
.card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(15,42,77,.12)}
.card .ic{width:52px;height:52px;border-radius:14px;background:var(--sky);
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px;
  font-family:'Lora',serif;color:var(--blue-bright);font-style:italic;font-weight:600;border:1.5px solid var(--blue-bright)}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.card p{font-size:14.5px;color:var(--ink-soft)}

/* ---- POSITIONING BAND ---- */
.band{background:var(--navy-deep);color:#fff;text-align:center;position:relative;overflow:hidden}
.band::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 60% at 50% 0%,rgba(57,160,224,.16),transparent 70%)}
.band blockquote{font-family:'Lora',serif;font-size:27px;line-height:1.5;font-weight:500;
  max-width:680px;margin:0 auto;font-style:italic;color:#e9f2ff;position:relative}
.band blockquote .hl{color:#7fd0ff;font-style:normal}
.band .who{font-size:13.5px;color:#9fbbdc;margin-top:22px;letter-spacing:.05em;position:relative}

/* ---- CTA STRIP ---- */
.cta-strip{background:linear-gradient(120deg,#1d4474,#0f2a4d);color:#fff;text-align:center}
.cta-strip h2{font-size:30px;font-weight:800;margin-bottom:10px}
.cta-strip p{color:#cbdcef;margin-bottom:26px;font-size:16px}

/* ---- FOOTER ---- */
.site-footer{background:var(--navy-deep);color:#a8c2e0;padding:56px 0 28px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:36px}
.foot-grid .logo .name{color:#fff}
.foot-grid .tag{font-style:italic;font-family:'Lora',serif;color:#7fd0ff;font-size:14px;margin:10px 0 16px}
.foot-grid h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:10px}
.foot-grid a:hover{color:#7fd0ff}
.foot-grid .contact-row{margin-bottom:10px;line-height:1.5}
.foot-bottom{border-top:1px solid rgba(127,208,255,.15);padding-top:20px;font-size:12px;color:#7d96b6;line-height:1.7}

/* ---- PAGE HEADER (trang con) ---- */
.page-head{background:linear-gradient(160deg,#173d6b,#0f2a4d);color:#fff;padding:70px 0 56px;text-align:center;position:relative;overflow:hidden}
.page-head::before{content:"";position:absolute;top:-40%;left:50%;transform:translateX(-50%);width:70%;height:90%;background:radial-gradient(circle,rgba(57,160,224,.16),transparent 70%)}
.page-head .eyebrow{color:#7fd0ff;position:relative}
.page-head h1{font-size:38px;font-weight:800;position:relative;letter-spacing:-.01em}
.breadcrumb{position:relative;font-size:13px;color:#9fbbdc;margin-top:14px}
.breadcrumb a:hover{color:#fff}

/* ---- DOCTOR PROFILE ---- */
.profile{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.profile-img{border-radius:16px;overflow:hidden;box-shadow:0 16px 40px rgba(15,42,77,.16);
  background:repeating-linear-gradient(45deg,#dce9f7,#dce9f7 16px,#e6f0fa 16px,#e6f0fa 32px);
  min-height:440px;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);text-align:center;padding:20px;position:sticky;top:96px}
.profile h2{font-size:28px;font-weight:800;color:var(--navy);margin-bottom:4px}
.profile .role{color:var(--blue-bright);font-weight:600;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:20px}
.cred-list{list-style:none;margin-top:8px}
.cred-list li{padding-left:28px;position:relative;margin-bottom:14px;font-size:15px;color:var(--ink-soft);line-height:1.6}
.cred-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--blue-bright);font-weight:800;
  background:var(--sky);width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px}
.cred-block{margin-bottom:28px}
.cred-block h3{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--sky)}

/* ---- TIMELINE ---- */
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;margin-bottom:26px}
.tl-item::before{content:"";position:absolute;left:-29px;top:5px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--blue-bright)}
.tl-item .yr{font-weight:700;color:var(--blue-bright);font-size:14px}
.tl-item h4{font-size:16px;font-weight:700;margin:2px 0 4px}
.tl-item p{font-size:14px;color:var(--ink-soft)}

/* ---- BLOG ---- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(15,42,77,.12)}
.post-thumb{aspect-ratio:16/10;background:repeating-linear-gradient(45deg,#dce9f7,#dce9f7 14px,#e6f0fa 14px,#e6f0fa 28px);
  display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:13px;text-align:center;padding:16px}
.post-card.feat .post-thumb{background:linear-gradient(135deg,#1d4474,#0f2a4d);color:#9fc4e8}
.post-body{padding:22px;flex:1;display:flex;flex-direction:column}
.post-cat{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue-bright);font-weight:700;margin-bottom:8px}
.post-body h3{font-size:18px;font-weight:700;line-height:1.35;margin-bottom:10px}
.post-body p{font-size:14px;color:var(--ink-soft);flex:1}
.post-meta{font-size:12.5px;color:#90a4b8;margin-top:14px;display:flex;gap:10px;align-items:center}
.post-readmore{color:var(--blue-bright);font-weight:600;font-size:14px;margin-top:12px;display:inline-block}

/* ---- ARTICLE ---- */
.article{max-width:780px;margin:0 auto}
.article .meta{font-size:13.5px;color:var(--ink-soft);margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line);display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.article .tag-cat{background:var(--sky);color:var(--blue);padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}
.article-hero{border-radius:14px;overflow:hidden;margin-bottom:30px;min-height:340px;
  background:linear-gradient(135deg,#1d4474,#0f2a4d);display:flex;align-items:center;justify-content:center;color:#9fc4e8;text-align:center;padding:24px}
.article p{margin-bottom:20px;font-size:16.5px;line-height:1.8;color:#26384a}
.article h2{font-size:25px;font-weight:800;color:var(--navy);margin:36px 0 14px}
.article h3{font-size:20px;font-weight:700;color:var(--navy);margin:28px 0 10px}
.article blockquote{border-left:4px solid var(--blue-bright);background:var(--sky);padding:18px 24px;
  margin:26px 0;border-radius:0 10px 10px 0;font-family:'Lora',serif;font-style:italic;font-size:18px;color:var(--navy)}
.article ul,.article ol{margin:0 0 20px 24px}
.article li{margin-bottom:10px;font-size:16px;line-height:1.7;color:#26384a}
.article-gallery{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:28px 0}
.article-gallery .ph{aspect-ratio:4/3;border-radius:10px;background:repeating-linear-gradient(45deg,#dce9f7,#dce9f7 14px,#e6f0fa 14px,#e6f0fa 28px);display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:12px;text-align:center;padding:14px}

/* ---- CONTACT ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .item{display:flex;gap:16px;margin-bottom:24px}
.contact-info .item .ic{flex:none;width:44px;height:44px;border-radius:12px;background:var(--sky);
  display:flex;align-items:center;justify-content:center;color:var(--blue-bright);font-size:18px;font-weight:700}
.contact-info .item h4{font-size:15px;font-weight:700;margin-bottom:2px}
.contact-info .item p{font-size:14px;color:var(--ink-soft)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:0 12px 36px rgba(15,42,77,.1)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border:1.5px solid var(--line);
  border-radius:9px;font-size:14.5px;font-family:inherit;background:var(--sky-2);transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue-bright);background:#fff;box-shadow:0 0 0 3px rgba(47,127,214,.13)}
.form-card .btn{width:100%;margin-top:6px}

/* ---- LEGAL NOTE ---- */
.legal-note{background:var(--sky);border-radius:12px;padding:18px 22px;font-size:13px;color:var(--ink-soft);
  line-height:1.6;border-left:4px solid var(--blue-bright);margin-top:28px}

/* ---- RESPONSIVE ---- */
@media(max-width:920px){
  .hero-grid,.profile,.contact-grid{grid-template-columns:1fr}
  .cards.c3,.blog-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .profile-img{position:static;min-height:300px}
  .hero h1{font-size:34px}
}
@media(max-width:640px){
  .menu{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    padding:16px 24px;gap:4px;border-bottom:1px solid var(--line);box-shadow:0 10px 30px rgba(0,0,0,.08)}
  .menu.open{display:flex}
  .menu li{width:100%}.menu a{display:block;padding:12px 0}
  .burger{display:flex}
  .cards.c3,.cards.c2,.blog-grid,.foot-grid,.contact-grid,.article-gallery{grid-template-columns:1fr}
  .hero h1{font-size:28px}.hero h1 .serif{font-size:24px}
  .sec-title{font-size:25px}.band blockquote{font-size:21px}
  section{padding:52px 0}
}
/* ===== HIỆU ỨNG NÂNG CAO ===== */
/* Aurora động ở hero & page-head */
.hero .aurora,.page-head .aurora{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.hero .aurora span,.page-head .aurora span{position:absolute;border-radius:50%;filter:blur(70px);opacity:.45;animation:drift 16s ease-in-out infinite}
.hero .aurora span:nth-child(1){width:280px;height:280px;background:rgba(57,160,224,.5);top:-60px;left:-40px}
.hero .aurora span:nth-child(2){width:220px;height:220px;background:rgba(47,127,214,.45);bottom:-50px;right:8%;animation-delay:-6s}
.hero .aurora span:nth-child(3){width:180px;height:180px;background:rgba(127,208,255,.3);top:30%;right:30%;animation-delay:-11s}
.page-head .aurora span:nth-child(1){width:240px;height:240px;background:rgba(57,160,224,.4);top:-80px;left:20%}
.page-head .aurora span:nth-child(2){width:180px;height:180px;background:rgba(127,208,255,.28);bottom:-60px;right:18%;animation-delay:-7s}
.hero .container,.page-head .container{position:relative;z-index:1}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(34px,22px) scale(1.12)}66%{transform:translate(-22px,32px) scale(.9)}}

/* Nút thở + ánh quét */
.btn{position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;
  background:linear-gradient(110deg,transparent,rgba(255,255,255,.4),transparent);
  transform:skewX(-20deg);animation:sheen 4s ease-in-out infinite}
@keyframes sheen{0%{left:-130%}50%,100%{left:170%}}
.hero-cta .btn:first-child{animation:breathe 3s ease-in-out infinite}
@keyframes breathe{0%,100%{box-shadow:0 8px 24px rgba(47,127,214,.32)}50%{box-shadow:0 12px 34px rgba(57,160,224,.6)}}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.08s}.reveal-d2{transition-delay:.16s}.reveal-d3{transition-delay:.24s}

/* Card icon xoay nhẹ khi hover */
.card:hover .ic{transform:rotate(-6deg) scale(1.06);background:var(--navy);color:#fff;border-color:var(--navy);transition:.35s}

/* Band: câu trích có vạch sáng chạy */
.band blockquote::before{content:"";position:absolute;left:50%;top:-22px;transform:translateX(-50%);width:54px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,transparent,#7fd0ff,transparent);background-size:200% 100%;animation:flow 3s linear infinite}
@keyframes flow{from{background-position:200% 0}to{background-position:-200% 0}}

/* Post card thumb zoom nhẹ */
.post-card .post-thumb,.post-card.feat .post-thumb{transition:.4s}
.post-card:hover .post-thumb{filter:brightness(1.05)}

/* Timeline chấm sáng */
.tl-item::before{transition:.3s}
.tl-item:hover::before{box-shadow:0 0 0 5px rgba(47,127,214,.18);border-color:var(--navy)}

/* Sticky CTA mobile */
.sticky-cta{display:none}
@media(max-width:640px){
  .sticky-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;gap:10px;padding:10px 14px;
    background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-top:1px solid var(--line);box-shadow:0 -4px 20px rgba(15,42,77,.1)}
  .sticky-cta a{flex:1;text-align:center;padding:13px;border-radius:40px;font-weight:700;font-size:14.5px;text-decoration:none}
  .sticky-cta .call{background:#fff;border:1.5px solid var(--blue-bright);color:var(--blue-bright)}
  .sticky-cta .reg{background:linear-gradient(180deg,#3aa6e6,#2f7fd6);color:#fff}
  body{padding-bottom:72px}
}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto;animation:none!important}
  .reveal{opacity:1!important;transform:none!important}
}