/* ═══════════════════════════════════════════════════
   Ngọc Trân Flower Cake — Shared Stylesheet
   Theme: Soft Dusty Blue · Feminine · Minimal
   ═══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Be+Vietnam+Pro:wght@300;400;500&display=swap');

/* ── VARIABLES ── */
:root {
  --b1:    #253C5B;   /* deep navy — dark sections, footer */
  --b2:    #3F6898;   /* mid blue — primary buttons */
  --b3:    #7AAEC8;   /* soft blue — accents */
  --b4:    #B9D0DF;   /* pale blue — borders */
  --b5:    #DDE9F2;   /* mist blue — section bg */
  --b6:    #F0F5FA;   /* near-white blue — alt bg */
  --cream: #FEFCF8;
  --gold:  #B8975A;
  --glt:   #D4B483;
  --text:  #253040;
  --t2:    #546070;
  --white: #FFFFFF;
  --rose:  #C48A7A;
  --fd: 'Cormorant Garamond', Georgia, serif;
  --fb: 'Be Vietnam Pro', sans-serif;
  --ease: cubic-bezier(.25,.46,.45,.94);
  --sh: 0 4px 24px rgba(37,60,91,.1);
}

/* ── RESET ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--fb);background:var(--cream);color:var(--text);overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{text-decoration:none;color:inherit}
ul{list-style:none}
button{cursor:pointer;font-family:var(--fb)}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--b6)}
::-webkit-scrollbar-thumb{background:var(--b3);border-radius:3px}

/* ── LANGUAGE ── */
.en-only{display:none}
body.en .vi-only{display:none}
body.en .en-only{display:revert}
body.en .en-i{display:inline}
body.en .vi-i{display:none}
.en-i{display:none}.vi-i{display:inline}

/* ══════════════════════════════════
   NAVIGATION
══════════════════════════════════ */
nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 4vw;height:68px;
  background:rgba(254,252,248,.96);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--b4);
  transition:box-shadow .3s var(--ease);
}
nav.sc{box-shadow:0 4px 28px rgba(37,60,91,.1)}

.n-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.n-logo img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:1.5px solid var(--b3)}
.n-logo-t{font-family:var(--fd);font-size:.98rem;font-weight:500;color:var(--b1);line-height:1.2}
.n-logo-t span{display:block;font-size:.6rem;font-family:var(--fb);font-weight:300;color:var(--b2);letter-spacing:.14em;text-transform:uppercase}

.n-links{display:flex;align-items:center;gap:1.6rem}
.n-links a{font-size:.72rem;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:var(--t2);position:relative;transition:color .3s;white-space:nowrap}
.n-links a::after{content:'';position:absolute;bottom:-3px;left:0;right:0;height:1.5px;background:var(--b3);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.n-links a:hover,.n-links a.active{color:var(--b2)}
.n-links a:hover::after,.n-links a.active::after{transform:scaleX(1)}

.n-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-btn{font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;font-weight:400;color:var(--b2);background:none;border:1px solid var(--b4);padding:5px 13px;border-radius:20px;transition:all .3s}
.lang-btn:hover{background:var(--b2);color:var(--white);border-color:var(--b2)}
.ham{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:2px}
.ham span{display:block;width:22px;height:1.5px;background:var(--b1);transition:all .3s}

/* ── Mobile menu ── */
.mob{display:none;position:fixed;inset:0;background:var(--b1);z-index:999;flex-direction:column;align-items:center;justify-content:center;gap:28px}
.mob.open{display:flex}
.mob a{font-family:var(--fd);font-size:1.9rem;font-weight:300;color:var(--white);transition:color .3s}
.mob a:hover{color:var(--b3)}
.mob-x{position:absolute;top:20px;right:26px;background:none;border:none;color:var(--white);font-size:1.7rem}

/* ══════════════════════════════════
   PAGE HERO (inner pages)
══════════════════════════════════ */
.pg-hero{
  padding-top:68px;min-height:38vh;
  background:linear-gradient(135deg,var(--b1) 0%,var(--b2) 100%);
  display:flex;align-items:center;
  position:relative;overflow:hidden;
}
.pg-hero::before{
  content:'';position:absolute;top:-60px;right:-60px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(186,210,232,.15) 0%,transparent 70%);
  pointer-events:none;
}
.pg-hero::after{
  content:'';position:absolute;bottom:-40px;left:20%;
  width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(184,151,90,.1) 0%,transparent 70%);
  pointer-events:none;
}
.pg-hero-inner{position:relative;z-index:1;padding:48px 6vw}
.pg-hero-label{font-size:.65rem;letter-spacing:.26em;text-transform:uppercase;color:var(--b3);margin-bottom:.9rem;display:flex;align-items:center;gap:10px}
.pg-hero-label::before{content:'';display:block;width:28px;height:1px;background:var(--b3)}
.pg-hero-title{font-family:var(--fd);font-size:clamp(2.2rem,4vw,3.8rem);font-weight:300;color:var(--white);line-height:1.1}
.pg-hero-title em{font-style:italic;color:var(--glt)}
.pg-hero-sub{font-size:.92rem;font-weight:300;color:rgba(255,255,255,.7);margin-top:1rem;max-width:500px;line-height:1.8}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;gap:8px;margin-top:1.4rem}
.breadcrumb a,.breadcrumb span{font-size:.7rem;font-weight:300;letter-spacing:.08em;color:rgba(255,255,255,.55);text-transform:uppercase}
.breadcrumb a:hover{color:var(--glt)}
.breadcrumb .sep{color:rgba(255,255,255,.3);font-size:.6rem}
.breadcrumb .cur{color:var(--glt)}

/* ══════════════════════════════════
   SECTION COMMONS
══════════════════════════════════ */
section{padding:88px 6vw}
.s-alt{background:var(--b6)}
.s-dark{background:var(--b1)}

.lbl{font-size:.64rem;letter-spacing:.24em;text-transform:uppercase;color:var(--b2);font-weight:400;margin-bottom:.85rem}
.s-dark .lbl{color:var(--b3)}
.ttl{font-family:var(--fd);font-size:clamp(1.8rem,3vw,2.8rem);font-weight:400;line-height:1.15;color:var(--b1);margin-bottom:1.1rem}
.ttl em{font-style:italic;color:var(--b2)}
.s-dark .ttl{color:var(--white)}
.s-dark .ttl em{color:var(--glt)}
.bdy{font-size:.94rem;font-weight:300;line-height:1.9;color:var(--t2)}
.s-dark .bdy{color:rgba(255,255,255,.65)}
.div{width:40px;height:1px;background:linear-gradient(to right,var(--b3),transparent);margin:1.4rem 0}
.s-dark .div{background:linear-gradient(to right,var(--gold),transparent)}

/* ── Buttons ── */
.btn{display:inline-block;padding:12px 32px;font-family:var(--fb);font-size:.72rem;font-weight:400;letter-spacing:.13em;text-transform:uppercase;border-radius:2px;transition:all .3s var(--ease);border:none}
.btn-blu{background:var(--b2);color:var(--white)}
.btn-blu:hover{background:var(--b1);transform:translateY(-2px);box-shadow:0 8px 22px rgba(63,104,152,.35)}
.btn-out{background:none;border:1px solid var(--b3);color:var(--b2)}
.btn-out:hover{background:var(--b2);color:var(--white);border-color:var(--b2);transform:translateY(-2px)}
.btn-gold{background:var(--gold);color:var(--white)}
.btn-gold:hover{background:#9A7A45;transform:translateY(-2px);box-shadow:0 8px 22px rgba(184,151,90,.35)}
.btn-wht{border:1px solid rgba(255,255,255,.4);color:var(--white);background:none}
.btn-wht:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7)}

/* ── Cards ── */
.card{background:var(--white);border:1px solid var(--b4);overflow:hidden;transition:all .35s var(--ease)}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(37,60,91,.1);border-color:var(--b3)}

/* Course card */
.cr-card{background:var(--white);border:1px solid var(--b4);overflow:hidden;transition:all .35s var(--ease)}
.cr-card:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(37,60,91,.1);border-color:var(--b3)}
.cr-img{position:relative;height:210px;overflow:hidden}
.cr-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.cr-card:hover .cr-img img{transform:scale(1.05)}
.cr-tag{position:absolute;top:12px;left:12px;font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;padding:4px 10px;background:var(--b2);color:var(--white)}
.cr-body{padding:20px 22px 26px}
.cr-date{font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;color:var(--b2);margin-bottom:7px}
.cr-ttl{font-family:var(--fd);font-size:1.06rem;font-weight:500;color:var(--b1);line-height:1.4;margin-bottom:10px}
.cr-fl{display:flex;flex-direction:column;gap:4px}
.cr-fl li{font-size:.78rem;font-weight:300;color:var(--t2);padding-left:13px;position:relative;line-height:1.5}
.cr-fl li::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:1px;background:var(--b3)}

/* Blog card */
.bl-card{background:var(--white);border:1px solid var(--b4);overflow:hidden;transition:all .35s var(--ease)}
.bl-card:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--b3)}
.bl-img{height:200px;overflow:hidden}
.bl-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.bl-card:hover .bl-img img{transform:scale(1.05)}
.bl-body{padding:22px 24px 28px}
.bl-cat{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--b2);margin-bottom:8px}
.bl-ttl{font-family:var(--fd);font-size:1.1rem;font-weight:500;color:var(--b1);line-height:1.4;margin-bottom:10px}
.bl-ttl a:hover{color:var(--b2)}
.bl-exc{font-size:.84rem;font-weight:300;line-height:1.75;color:var(--t2);margin-bottom:14px}
.bl-meta{font-size:.68rem;font-weight:300;color:var(--b3);letter-spacing:.06em}

/* ── Gallery grid ── */
.gal-grid{display:grid;grid-template-columns:repeat(12,1fr);grid-template-rows:260px 260px;gap:8px}
.gi{overflow:hidden;position:relative;cursor:pointer}
.gi img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}
.gi:hover img{transform:scale(1.05)}
.g-ov{position:absolute;inset:0;background:rgba(37,60,91,0);display:flex;align-items:center;justify-content:center;transition:background .35s}
.gi:hover .g-ov{background:rgba(37,60,91,.3)}
.g-pl{opacity:0;color:var(--white);font-family:var(--fd);font-size:2rem;font-weight:300;transition:opacity .3s}
.gi:hover .g-pl{opacity:1}
.g1{grid-column:1/5;grid-row:1/3}
.g2{grid-column:5/8;grid-row:1}
.g3{grid-column:8/13;grid-row:1}
.g4{grid-column:5/9;grid-row:2}
.g5{grid-column:9/13;grid-row:2}

/* ── Lightbox ── */
.lb{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:9999;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .3s}
.lb.open{opacity:1;pointer-events:auto}
.lb img{max-width:90vw;max-height:88vh;object-fit:contain}
.lb-x{position:absolute;top:20px;right:26px;color:var(--white);font-size:1.8rem;background:none;border:none;transition:color .3s}
.lb-x:hover{color:var(--glt)}

/* ── Forms ── */
.fg{display:flex;flex-direction:column;gap:5px}
.fg label{font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--b2)}
.fg input,.fg textarea,.fg select{
  background:var(--white);border:1px solid var(--b4);
  color:var(--text);font-family:var(--fb);font-size:.88rem;font-weight:300;
  padding:11px 15px;border-radius:2px;outline:none;
  transition:border-color .3s,box-shadow .3s;resize:vertical;
}
.fg input:focus,.fg textarea:focus,.fg select:focus{border-color:var(--b3);box-shadow:0 0 0 3px rgba(122,174,200,.12)}
.fg textarea{min-height:110px}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:15px}
/* Dark bg form */
.form-dark .fg label{color:var(--b3)}
.form-dark .fg input,.form-dark .fg textarea,.form-dark .fg select{background:rgba(255,255,255,.06);border-color:rgba(185,208,223,.25);color:var(--white)}
.form-dark .fg input:focus,.form-dark .fg textarea:focus,.form-dark .fg select:focus{border-color:var(--b3);background:rgba(255,255,255,.1)}
.form-dark .fg select option{background:var(--b1)}

/* ── Animations ── */
.fu{opacity:1;transform:translateY(0);transition:opacity .6s ease,transform .6s ease}
.js-on .fu{opacity:0;transform:translateY(26px)}
.js-on .fu.vis{opacity:1;transform:translateY(0)}

/* ══════════════════════════════════
   FOOTER
══════════════════════════════════ */
footer{background:var(--b1);padding:56px 6vw 32px}
.ft-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding-bottom:40px;border-bottom:1px solid rgba(185,208,223,.12)}
.ft-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.ft-logo img{width:44px;height:44px;border-radius:50%;border:1.5px solid var(--b3);object-fit:cover}
.ft-logo-n{font-family:var(--fd);font-size:1rem;color:var(--white)}
.ft-tag{font-size:.82rem;font-weight:300;line-height:1.75;color:rgba(255,255,255,.45);max-width:260px}
.ft-h{font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--b3);margin-bottom:16px}
.ft-lnks{display:flex;flex-direction:column;gap:8px}
.ft-lnks a{font-size:.84rem;font-weight:300;color:rgba(255,255,255,.5);transition:color .3s}
.ft-lnks a:hover{color:var(--b3)}
.ft-ci{font-size:.82rem;font-weight:300;color:rgba(255,255,255,.5);line-height:1.65;margin-bottom:10px}
.ft-ci strong{display:block;font-size:.6rem;letter-spacing:.15em;text-transform:uppercase;color:var(--b3);font-weight:400;margin-bottom:2px}
.ft-ci a{color:rgba(255,255,255,.5);transition:color .3s}
.ft-ci a:hover{color:var(--b3)}
.ft-bot{display:flex;align-items:center;justify-content:space-between;padding-top:24px;flex-wrap:wrap;gap:12px}
.ft-copy{font-size:.7rem;font-weight:300;color:rgba(255,255,255,.28)}
.ft-aw{font-size:.66rem;letter-spacing:.1em;color:var(--gold);text-transform:uppercase}

/* ══════════════════════════════════
   RESPONSIVE
══════════════════════════════════ */
@media(max-width:1200px){.n-links{gap:1.2rem}}
@media(max-width:1050px){
  .n-links{display:none}.ham{display:flex}
  .ft-grid{grid-template-columns:1fr 1fr;gap:32px}
  .gal-grid{grid-template-columns:repeat(2,1fr);grid-template-rows:auto}
  .g1,.g2,.g3,.g4,.g5{grid-column:auto;grid-row:auto;height:240px}
  .f2{grid-template-columns:1fr}
}
@media(max-width:640px){
  section{padding:64px 5vw}
  .ft-grid{grid-template-columns:1fr;gap:24px}
  .gal-grid{grid-template-columns:1fr}
  .g1,.g2,.g3,.g4,.g5{height:220px}
}