/* ==========================================================================
   site.css — lớp mở rộng trên landing.css
   Bổ sung: logo SVG, illustration, form thu lead, blog card, trang phụ.
   Kế thừa nguyên token của landing.css (--bg/--lime/--violet/--line...).
   Tách file riêng để landing.css (bản đã chạy ổn) không bị đụng vào.
   ========================================================================== */

/* --- Logo ---------------------------------------------------------------- */
.brand-logo{display:inline-flex;align-items:center;gap:11px}
.brand-logo svg{display:block;width:30px;height:30px;flex:none}
.brand-logo img{display:block;height:34px;width:auto;flex:none}
.brand-logo .brand-name{font:800 15px Manrope,system-ui,sans-serif;letter-spacing:-.03em;color:var(--text)}
.brand-logo .brand-sub{font:500 9px 'JetBrains Mono',monospace;letter-spacing:.06em;color:var(--muted);text-transform:uppercase;display:block;margin-top:2px}
.footer .brand-logo img{height:26px}

/* --- Hero: ảnh chân dung thật thay cho khối CSS ---------------------------- */
.hero{position:relative;overflow:clip;isolation:isolate}
.hero>.hero-copy,.hero>.hero-art{position:relative;z-index:1}
.hero-background{position:absolute;inset:70px 0 0;z-index:0;overflow:hidden;pointer-events:none}
.hero-background:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,var(--bg) 5%,color-mix(in srgb,var(--bg) 68%,transparent) 48%,var(--bg) 100%)}
.hero-background img{width:100%;height:100%;display:block;object-fit:cover;opacity:.32;filter:saturate(.8) contrast(1.08)}
.hero-portrait{position:absolute;inset:12% 16% 10% 18%;border:1px solid rgba(243,244,236,.2);
  box-shadow:26px 26px 0 rgba(132,124,255,.15),0 24px 70px rgba(0,0,0,.4);overflow:hidden;background:var(--surface)}
.hero-portrait img{width:100%;height:100%;object-fit:cover;display:block}
.hero-portrait figcaption{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;
  background:linear-gradient(transparent,rgba(11,13,14,.92));font:500 9px 'JetBrains Mono',monospace;
  letter-spacing:.14em;text-transform:uppercase;color:var(--lime)}

/* --- Illustration trong work card ----------------------------------------- */
.work-illus{display:block;width:100%;height:auto;border:1px solid var(--line);margin-bottom:18px;background:var(--bg)}
.work-card--featured .work-illus{margin-bottom:22px}

/* --- Form thu lead -------------------------------------------------------- */
.lead-form{display:grid;gap:14px;margin-top:26px;max-width:430px}
.lead-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:grid;gap:6px;min-width:0}
.field label{font:500 10px 'JetBrains Mono',monospace;letter-spacing:.12em;text-transform:uppercase;color:inherit;opacity:.75}
.field input,.field textarea,.field select{width:100%;padding:13px 14px;background:rgba(11,13,14,.06);
  border:1px solid rgba(20,21,26,.28);color:inherit;font:inherit;font-size:14px;border-radius:0;transition:border-color .25s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:#14151a}
.field textarea{resize:vertical;min-height:96px}
.field .err{font:500 10px 'JetBrains Mono',monospace;color:#b3261e;display:none}
.field.is-invalid .err{display:block}
.field.is-invalid input,.field.is-invalid textarea{border-color:#b3261e}
/* trên nền tối (trang liên hệ) */
.lead-form--dark .field input,.lead-form--dark .field textarea,.lead-form--dark .field select{
  background:var(--surface-2);border-color:var(--line);color:var(--text)}
.lead-form--dark .field input:focus,.lead-form--dark .field textarea:focus{border-color:var(--lime)}
.form-note{font-size:11px;line-height:1.6;opacity:.7;margin:0}
.form-status{font:500 12px 'JetBrains Mono',monospace;margin:0;display:none;padding:12px 14px;border:1px solid currentColor}
.form-status.is-ok{display:block;color:#0f5132;background:rgba(212,255,63,.35)}
.form-status.is-err{display:block;color:#b3261e;background:rgba(179,38,30,.08)}
.lead-form--dark .form-status.is-ok{color:var(--lime);background:rgba(212,255,63,.10)}
.honey{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* --- Bong bóng nước theo con trỏ (immersive.js) --------------------------- */
.fx-bubble{position:fixed;top:0;left:0;z-index:60;pointer-events:none;border-radius:50%;
  border:1px solid rgba(212,255,63,.55);
  background:radial-gradient(circle at 34% 30%,rgba(255,255,255,.4),rgba(212,255,63,.12) 55%,transparent 72%);
  will-change:transform,opacity;animation:fx-bubble-pop .95s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes fx-bubble-pop{
  0%{transform:translate(-50%,-50%) scale(.35);opacity:.9}
  70%{opacity:.5}
  100%{transform:translate(-50%,-92%) scale(1.35);opacity:0}}
@media (prefers-reduced-motion:reduce){.fx-bubble{display:none}}

/* --- Trang phụ: hero nhỏ --------------------------------------------------- */
.page-hero{padding:170px 0 70px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(46px,6.5vw,86px);margin:22px 0 18px}
.page-hero p{max-width:520px;color:var(--muted);font-size:16px;line-height:1.8;margin:0}

/* --- Blog ----------------------------------------------------------------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.post-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  transition:transform .35s var(--ease),border-color .35s}
.post-card:hover{transform:translateY(-6px);border-color:var(--lime)}
.post-card img,.post-card svg{width:100%;height:170px;object-fit:cover;display:block;border-bottom:1px solid var(--line)}
.post-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{font:500 9px 'JetBrains Mono',monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--lime)}
.post-card h3{font-size:19px;line-height:1.25;letter-spacing:-.03em;margin:0}
.post-card p{color:var(--muted);font-size:13px;line-height:1.7;margin:0}
.post-empty{border:1px dashed var(--line);padding:60px 24px;text-align:center;color:var(--muted);font-size:14px}

/* --- Bài viết (prose) ------------------------------------------------------ */
.prose{max-width:680px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text)}
.prose h2{font-size:32px;margin:48px 0 16px;letter-spacing:-.04em}
.prose h3{font-size:22px;margin:34px 0 12px;letter-spacing:-.03em}
.prose p,.prose li{color:var(--muted)}
.prose a{color:var(--lime);border-bottom:1px solid currentColor}
.prose img{max-width:100%;height:auto;border:1px solid var(--line)}
.prose blockquote{margin:28px 0;padding:16px 22px;border-left:2px solid var(--lime);background:var(--surface);font-style:italic}
.prose code{font-family:'JetBrains Mono',monospace;font-size:.9em;background:var(--surface-2);padding:2px 6px}
.prose pre{background:var(--surface);border:1px solid var(--line);padding:18px;overflow:auto}
.prose pre code{background:none;padding:0}
.video-embed{position:relative;aspect-ratio:16/9;margin:28px 0;border:1px solid var(--line);background:#000;overflow:hidden}
.video-embed iframe,.video-embed video{position:absolute;inset:0;width:100%;height:100%;border:0}

/* --- Lưới dự án ------------------------------------------------------------ */
.project-list{display:grid;gap:16px}
.project-item{display:grid;grid-template-columns:300px 1fr;gap:32px;padding:28px;background:var(--surface);
  border:1px solid var(--line);align-items:center;transition:border-color .35s}
.project-item:hover{border-color:var(--lime)}
.project-item img,.project-item svg{width:100%;height:auto;display:block;border:1px solid var(--line)}
.project-item h3{font-size:26px;letter-spacing:-.04em;margin:10px 0 12px}
.project-item p{color:var(--muted);font-size:14px;line-height:1.8;margin:0 0 16px}
.project-list--dynamic{gap:22px}
.project-list--dynamic .project-item{grid-template-columns:minmax(320px,1.05fr) 1fr;padding:0;gap:0;overflow:hidden}
.project-media{position:relative;aspect-ratio:16/9;background:#050606;overflow:hidden;border-right:1px solid var(--line)}
.project-media img,.project-media iframe{position:absolute;inset:0;width:100%;height:100%;display:block;border:0;object-fit:contain}
.project-copy{padding:30px}.project-copy h2{font-size:clamp(25px,3vw,38px);letter-spacing:-.05em;margin:10px 0 14px}
.project-link{margin-top:20px!important}.project-link a{color:var(--lime);border-bottom:1px solid currentColor}
.project-detail{padding-top:150px;padding-bottom:100px;max-width:980px}.project-breadcrumb{font:500 10px 'JetBrains Mono',monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.project-breadcrumb a{color:var(--lime)}.project-detail-head{max-width:800px;margin:42px 0}.project-detail-head h1{font-size:clamp(46px,7vw,88px);line-height:.98;letter-spacing:-.065em;margin:16px 0 24px}.project-detail-head>p{font-size:18px;line-height:1.8;color:var(--muted)}
.project-detail-media{position:relative;aspect-ratio:16/9;background:#050606;border:1px solid var(--line);overflow:hidden}.project-detail-media img,.project-detail-media iframe{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;border:0}.project-detail-media--image{aspect-ratio:auto;display:grid;place-items:center;min-height:240px;padding:clamp(10px,2vw,24px)}.project-detail-media--image img{position:static;width:auto;max-width:100%;height:auto;max-height:82vh}.project-detail-tags{margin-top:20px}.project-detail-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}

/* --- Responsive ------------------------------------------------------------ */
@media (max-width:900px){
  .post-grid{grid-template-columns:1fr 1fr}
  .project-item{grid-template-columns:1fr;gap:20px}
  .project-list--dynamic .project-item{grid-template-columns:1fr;gap:0}.project-media{border-right:0;border-bottom:1px solid var(--line)}
  .page-hero{padding:140px 0 55px}
}
@media (max-width:640px){
  .post-grid{grid-template-columns:1fr}
  .lead-row{grid-template-columns:1fr}
  .hero-portrait{inset:8% 9% 8% 10%}
  .brand-logo .brand-sub{display:none}
  .page-hero{padding:120px 0 45px}
  .project-detail{padding-top:120px;padding-bottom:70px}.project-detail-head{margin:30px 0}.project-detail-head>p{font-size:16px}
}

/* ==========================================================================
   Video facade — thumbnail + nút play, bấm mới tải iframe (nhanh + đẹp hơn)
   ========================================================================== */
.video-facade{appearance:none;position:relative;display:block;width:100%;padding:0;margin:0;border:0;background:#050606;cursor:pointer;overflow:hidden;color:inherit;font:inherit;text-align:left;border-radius:0}
.video-facade img{position:absolute;inset:0;width:100%;height:100%;display:block;object-fit:cover;transition:transform .6s var(--ease),opacity .3s}
.video-facade:hover img{transform:scale(1.045);opacity:.85}
.video-facade-play{position:absolute;inset:0;margin:auto;width:66px;height:66px;border-radius:50%;background:rgba(11,13,14,.55);border:1px solid rgba(255,255,255,.4);display:grid;place-items:center;color:var(--lime);pointer-events:none;transition:transform .3s var(--ease),background .3s}
.video-facade-play:before{content:'';display:block;width:0;height:0;border-left:20px solid currentColor;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.video-facade:hover .video-facade-play{transform:scale(1.12);background:rgba(11,13,14,.8)}
.video-facade:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.project-media.video-facade{border-right:1px solid var(--line)}

/* --- Khu showreel trang chủ ------------------------------------------------- */
.showreel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:44px}
.showreel-card{aspect-ratio:16/9;border:1px solid var(--line);transition:border-color .35s}
.showreel-card:hover{border-color:var(--lime)}
.showreel-caption{position:absolute;left:0;right:0;bottom:0;padding:42px 16px 14px;background:linear-gradient(transparent,rgba(11,13,14,.94));display:grid;gap:3px;pointer-events:none}
.showreel-caption strong{font-size:15px;font-weight:700;line-height:1.35;color:var(--text);letter-spacing:-.02em}
.showreel-caption small{font:500 9px 'JetBrains Mono',monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--lime)}

/* --- Bộ lọc dự án ----------------------------------------------------------- */
.project-filter{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 30px}
.filter-btn{display:inline-flex;align-items:center;gap:9px;padding:10px 16px;border:1px solid var(--line);background:transparent;color:var(--muted);font-size:13px;font-weight:600;cursor:pointer;transition:color .25s,border-color .25s,background .25s}
.filter-btn span{font:500 10px 'JetBrains Mono',monospace;color:var(--muted);opacity:.7}
.filter-btn:hover{color:var(--text);border-color:var(--lime)}
.filter-btn.is-active{color:#131710;background:var(--lime-solid);border-color:var(--lime-solid)}
.filter-btn.is-active span{color:rgba(19,23,16,.7)}
.project-filter-empty{display:none;border:1px dashed var(--line);padding:48px 24px;text-align:center;color:var(--muted);font-size:14px}

/* --- Responsive bổ sung ----------------------------------------------------- */
@media (max-width:900px){
  .showreel-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .showreel-grid{grid-template-columns:1fr}
  .project-filter{gap:6px}
  .filter-btn{flex:1;justify-content:center;padding:11px 12px;font-size:12px}
}

/* --- Nút Zalo nổi (mọi trang) ------------------------------------------------ */
.zalo-float{position:fixed;right:18px;bottom:18px;z-index:90;width:56px;height:56px;border-radius:50%;
  background:#0068ff;display:grid;place-items:center;box-shadow:0 6px 24px rgba(0,104,255,.45);
  transition:transform .25s var(--ease),box-shadow .25s;color:#fff}
.zalo-float:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 10px 32px rgba(0,104,255,.6)}
.zalo-float .zalo-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);
  background:var(--surface);border:1px solid var(--line);color:var(--text);font:600 12px Manrope,sans-serif;
  padding:7px 12px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s}
.zalo-float:hover .zalo-tip,.zalo-float:focus-visible .zalo-tip{opacity:1}
@media (max-width:640px){
  .zalo-float{width:52px;height:52px;right:14px;bottom:14px}
  .zalo-float .zalo-tip{display:none}
}
@media (prefers-reduced-motion:reduce){.zalo-float{transition:none}}

/* --- Hàng logo khách hàng (màu chuẩn nguyên bản trên chip nền sáng) --------- */
.clients-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.clients-inner{display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.clients-label{font:500 10px 'JetBrains Mono',monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.clients-logos{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.clients-logos img{height:34px;width:auto;background:#fff;border-radius:9px;padding:9px 16px;
  box-shadow:0 2px 12px rgba(0,0,0,.18),inset 0 0 0 1px rgba(20,23,18,.06);
  transition:transform .3s var(--ease),box-shadow .3s}
.clients-logos img:hover{transform:translateY(-3px);box-shadow:0 8px 22px rgba(0,0,0,.22)}
.clients-logos .client-text{font:800 14px Manrope,sans-serif;letter-spacing:-.02em;color:var(--muted);
  background:var(--surface-2);border:1px solid var(--line);border-radius:9px;padding:11px 16px;white-space:nowrap}
@media (max-width:640px){
  .clients-inner{gap:14px}
  .clients-logos{gap:12px}
  .clients-logos img{height:26px;padding:7px 12px;border-radius:7px}
  .clients-logos .client-text{font-size:12px;padding:9px 12px}
}

/* --- Related posts (internal link chéo) ------------------------------------- */
.related-posts{padding-top:8px}
.related-title{font:500 11px 'JetBrains Mono',monospace;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 18px}
.related-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:0}
.related-grid .post-card h3{font-size:16px;line-height:1.3}
.related-grid .post-card p{font-size:12.5px}
@media (max-width:640px){.related-grid{grid-template-columns:1fr}}