:root{
  --blue:#0a6cff; --blue-d:#0652c4; --navy:#021a55; --navy2:#032a88; --cyan:#22d3ee;
  --bg:#f3f6fc; --card:#fff; --text:#0f1b3d; --muted:#6b7694; --line:#e3e9f4; --red:#d92d20;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{font-family:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
button{font-family:inherit;cursor:pointer}
img{display:block;max-width:100%}
.hidden{display:none!important}

/* ===================================================================
   LOGIN
   =================================================================== */
#login{display:grid;grid-template-columns:minmax(0,2fr) minmax(380px,1fr);min-height:100vh;min-height:100dvh}

/* ---- Bên trái: logo, wordmark, footer nằm trong ảnh nền.
        Tagline + 2 chip là HTML/CSS, đặt theo % của ảnh nên luôn khớp vị trí ở mọi kích thước ---- */
.hero{
  --ar:1.349;                      /* tỉ lệ ảnh nền, app.js sẽ đo lại chính xác */
  position:relative;overflow:hidden;container-type:size;min-width:0;
  background-color:#031a57;
  /* Tên file thật là "Backgroud login.png" (thiếu n) – khai báo cả 2 cách viết */
  background-image:url("images/Backgroud%20login.png"),url("images/Background%20login.png");
  background-size:cover,cover;background-position:center,center;background-repeat:no-repeat,no-repeat;
}
.stage{ /* mô phỏng đúng cách "cover" cắt ảnh, để toạ độ % khớp với ảnh */
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:max(100cqw,calc(100cqh * var(--ar)));aspect-ratio:var(--ar);
  container-type:inline-size;pointer-events:none;
}
.tagline{
  position:absolute;left:27.4%;top:55%;width:56%;margin:0;
  font-size:1.6cqw;line-height:1.5;font-weight:300;color:#fff;
  text-shadow:0 2px 16px rgba(2,18,66,.35);
}

/* 2 chip thông tin (trước đây nằm trong ảnh nền) – giờ là HTML/CSS nên sắc nét và co giãn theo ảnh */
.chips{
  position:absolute;left:27.4%;top:75%;width:60%;
  display:flex;flex-wrap:wrap;gap:.8em;
  font-size:max(10px,1.25cqw);font-weight:500;color:#e8f0ff;line-height:1.2;
}
.chip{
  display:inline-flex;align-items:center;gap:.6em;white-space:nowrap;
  padding:.65em 1.1em;border-radius:.7em;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.chip svg{width:1.05em;height:1.05em;flex:none;color:#4dd8ff}

/* ---- Bên phải ---- */
.panel{background:linear-gradient(180deg,#fff 0%,#f8faff 100%);display:flex;flex-direction:column;padding:clamp(20px,2.4vw,32px) clamp(24px,3.4vw,48px);min-width:0}
.panel-bar{display:flex;justify-content:space-between;align-items:center;gap:12px}
.logo-acacy{height:40px;width:auto;mix-blend-mode:multiply}
.acacy-text{font-weight:800;color:#0b7ac4;letter-spacing:.14em;font-size:26px}
.panel-tools{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted)}
.help{display:flex;gap:6px;align-items:center;cursor:pointer;background:none;border:0;color:inherit;font-size:13px}
.help:hover{color:var(--blue)}
.lang{display:flex;border:1px solid var(--line);border-radius:99px;padding:3px;background:#fff}
.lang button{border:0;background:transparent;padding:5px 13px;border-radius:99px;font-size:12px;font-weight:700;color:var(--muted);transition:.2s}
.lang button.on{background:var(--blue);color:#fff;box-shadow:0 4px 10px -3px rgba(10,108,255,.55)}

.form-wrap{flex:1;display:flex;justify-content:center;align-items:center;padding:32px 0}
.box{width:100%;max-width:400px}
.box h2{font-size:clamp(26px,2.2vw,32px);font-weight:800;letter-spacing:-.03em;margin:0 0 10px}
.box p.sub{color:var(--muted);font-size:15px;line-height:1.6;margin-bottom:30px}
.lbl{display:block;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#4a5578;margin:0 0 8px}

.field{position:relative}
.field .lead{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:#8b96b3;pointer-events:none;display:grid}
.field input{width:100%;height:56px;border:1.5px solid #dde4f1;border-radius:14px;padding:0 52px 0 48px;font-family:inherit;font-size:15px;font-weight:500;background:#fff;outline:none;transition:border-color .2s,box-shadow .2s;letter-spacing:.04em;color:var(--text)}
.field input::placeholder{color:#a0a9c0;font-weight:400;letter-spacing:.01em}
.field input:hover{border-color:#c6d2ea}
.field input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(10,108,255,.12)}
.field .eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:40px;height:40px;border:0;background:none;color:#6b7694;border-radius:10px;display:grid;place-items:center;transition:.15s}
.field .eye:hover{background:#eef2fa;color:var(--blue)}
.field.invalid input{border-color:var(--red);background:#fffafa}
.field.invalid input:focus{box-shadow:0 0 0 4px rgba(217,45,32,.12)}
.field.shake{animation:shake .38s}
@keyframes shake{20%{transform:translateX(-5px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(3px)}}
.err{min-height:22px;margin:8px 2px 0;font-size:13px;font-weight:500;color:var(--red);line-height:1.4;opacity:0;transform:translateY(-3px);transition:opacity .2s,transform .2s}
.err.show{opacity:1;transform:none}

.btn-login{margin-top:8px;width:100%;height:56px;border:0;border-radius:14px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.01em;background:linear-gradient(90deg,#0a58e6,#0a84ff);box-shadow:0 14px 28px -12px rgba(10,108,255,.7);transition:transform .15s,filter .2s;display:flex;align-items:center;justify-content:center;gap:10px}
.btn-login:hover{transform:translateY(-1px);filter:brightness(1.05)}
.btn-login:active{transform:none}
.btn-login:disabled{cursor:wait;filter:saturate(.8);transform:none}
.spin{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:rot .7s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}
.opts{display:flex;justify-content:space-between;align-items:center;margin-top:22px;font-size:13px;gap:12px;flex-wrap:wrap}
.opts label{display:flex;gap:9px;align-items:center;cursor:pointer;color:#3a4566;user-select:none}
.opts input{width:16px;height:16px;accent-color:var(--blue)}
.opts a{color:var(--blue);text-decoration:none;font-weight:600}
.opts a:hover{text-decoration:underline}
.secure{margin-top:30px;padding-top:20px;border-top:1px solid var(--line);display:flex;gap:8px;align-items:center;font-size:12.5px;color:#8a93ab}
.secure svg{color:#2fb67c;flex:none}
.legal{text-align:center;font-size:11.5px;color:#8a93ab;line-height:2}
.legal a{color:#8a93ab;text-decoration:none;margin:0 10px}
.legal a:hover{color:var(--blue)}

/* iPad dọc & mobile: xếp chồng, giữ nguyên tỉ lệ ảnh nền */
@media (max-width:1023px){
  #login{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .hero{aspect-ratio:var(--ar);max-height:62dvh}
  .panel{border-radius:28px 28px 0 0;margin-top:-28px;position:relative;z-index:2;box-shadow:0 -18px 40px -20px rgba(2,20,71,.45);padding:22px 32px}
  .form-wrap{align-items:flex-start;padding:28px 0 20px}
  .box{max-width:460px;margin:0 auto}
  .field input{font-size:16px}   /* iOS tự zoom nếu chữ input < 16px */
}
@media (max-width:639px){
  /* Giữ nguyên tỉ lệ ảnh (không cắt/zoom) để header + wordmark luôn đủ.
     Tagline và 2 chip xếp dòng ngay dưới wordmark, ở khoảng trống của ảnh. */
  .hero{max-height:none;background-size:cover,cover;background-position:center,center}
  .stage{inset:55% 0 auto 0;transform:none;width:auto;height:auto;aspect-ratio:auto;container-type:normal;
    display:flex;flex-direction:column;align-items:center;padding:0 16px}
  .tagline{position:static;width:100%;font-size:12px;line-height:1.5;text-align:center}
  .chips{position:static;width:100%;justify-content:center;gap:6px;margin-top:10px;font-size:10px}
  .chip{padding:6px 10px;border-radius:9px;background:rgba(2,18,66,.45)}
  .panel{padding:18px 20px calc(18px + env(safe-area-inset-bottom))}
  .logo-acacy{height:32px}
  .help span{display:none}
  .box h2{font-size:26px}
}
@media (max-width:380px){
  .chips{font-size:9px;gap:5px}
  .chip{padding:5px 8px}
}

/* ===================================================================
   HOME  (rail trái nhỏ kiểu Canva + vùng nhúng full)
   =================================================================== */
#home{display:grid;grid-template-columns:84px minmax(0,1fr);height:100vh;height:100dvh;overflow:hidden}
.rail{background:linear-gradient(180deg,var(--navy),var(--navy2));display:flex;flex-direction:column;align-items:center;padding:12px 0;gap:4px;color:#c4d6fb;z-index:5;min-height:0}
.rail-logo{width:76px;height:48px;display:grid;place-items:center;margin-bottom:8px;cursor:pointer;border-radius:14px;transition:.15s;user-select:none}
.rail-logo:hover{background:rgba(255,255,255,.1)}
/* logo chữ vector → luôn sắc nét ở mọi độ phân giải */
.rl-mark{font-weight:800;font-size:13px;letter-spacing:-.02em;color:#fff;line-height:1;white-space:nowrap}
.rl-mark b{color:#7fe3ff;font-weight:800}
.rail-nav{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;width:100%;display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 0;scrollbar-width:none}
.rail-nav::-webkit-scrollbar{display:none}
.rail-bottom{display:flex;flex-direction:column;align-items:center;gap:2px;padding-top:8px;border-top:1px solid rgba(255,255,255,.12);width:100%}
.ri{width:72px;background:none;border:0;color:inherit;display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 2px;border-radius:12px;font-size:11px;line-height:1.2;text-decoration:none;flex:none;transition:color .15s}
.ri .ic{width:44px;height:34px;border-radius:12px;display:grid;place-items:center;font-size:19px;transition:background .15s,transform .15s}
.ri .lb{max-width:68px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ri:hover{color:#fff}
.ri:hover .ic{background:rgba(255,255,255,.13)}
.ri:active .ic{transform:scale(.94)}
.ri.active{color:#fff;font-weight:700}
.ri.active .ic{background:#fff;color:var(--navy);box-shadow:0 6px 14px -6px rgba(0,0,0,.45)}
.ri.out:hover .ic{background:#e5484d}
.sep{width:36px;height:1px;background:rgba(255,255,255,.14);margin:6px 0;flex:none}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#0a84ff,#22d3ee);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;border:2px solid rgba(255,255,255,.35)}
.ri.user{cursor:default}

.main{position:relative;min-width:0;min-height:0;overflow:auto;background:var(--bg)}
.banner{margin:24px 28px 8px;border-radius:22px;padding:clamp(22px,3vw,38px);color:#fff;position:relative;overflow:hidden;background:linear-gradient(135deg,#032a88,#0a6cff 85%)}
.banner::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 130% at 100% 0%,rgba(255,255,255,.2),transparent 60%)}
.banner>*{position:relative}
.banner h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.02em}
.banner p{margin-top:6px;color:#cfe0ff;font-size:14px}
.banner .date{display:inline-block;margin-top:14px;font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(255,255,255,.14);padding:6px 12px;border-radius:99px;text-transform:capitalize}
.grid{padding:16px 28px 40px;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.group-title{grid-column:1/-1;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:12px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;text-align:left;transition:.2s;display:flex;align-items:center;gap:16px;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:0 18px 32px -18px rgba(10,60,160,.4);border-color:#b9d1ff}
.card .ic{width:52px;height:52px;border-radius:15px;background:#eaf2ff;display:grid;place-items:center;font-size:25px;flex:none}
.card .tx{min-width:0}
.card h4{font-size:15.5px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card small{color:var(--muted);font-size:12px;display:block;margin-top:2px}
.card .go{margin-left:auto;color:#9db2da;flex:none;transition:.2s}
.card:hover .go{color:var(--blue);transform:translateX(3px)}
.empty{grid-column:1/-1;padding:50px 20px;text-align:center;color:var(--muted)}

.frame-wrap{position:absolute;inset:0;background:#fff}
.frame-wrap iframe{width:100%;height:100%;border:0;display:block;background:#fff}
.frame-load{position:absolute;inset:0;display:flex;flex-direction:column;gap:14px;align-items:center;justify-content:center;color:var(--muted);background:#fff;font-size:14px;text-align:center;padding:24px;transition:opacity .3s}
.frame-load.done{opacity:0;pointer-events:none}
.frame-load .spin{border-color:#d6e2fa;border-top-color:var(--blue);width:30px;height:30px}
.frame-load.fail .spin{display:none}

/* Bong bóng + nền mờ: mặc định ẩn (chỉ dùng trên mobile) */
.fab,.rail-backdrop{display:none}

/* ===================================================================
   MOBILE: menu dạng bong bóng, bấm vào mới bung ra
   =================================================================== */
@media (max-width:767px){
  #home{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr)}

  /* ---- Bong bóng ---- */
  .fab{
    display:grid;place-items:center;position:fixed;z-index:60;
    right:16px;bottom:calc(18px + env(safe-area-inset-bottom));
    width:58px;height:58px;border:0;border-radius:50%;color:#fff;
    background:linear-gradient(135deg,#0a58e6,#22d3ee);
    box-shadow:0 14px 28px -8px rgba(10,108,255,.7),0 0 0 4px rgba(255,255,255,.55);
    transition:transform .25s cubic-bezier(.34,1.56,.64,1);
  }
  .fab:active{transform:scale(.92)}
  .fab .f-close{display:none}
  #home.menu-open .fab{transform:rotate(90deg)}
  #home.menu-open .fab .f-open{display:none}
  #home.menu-open .fab .f-close{display:block}

  .rail-backdrop{
    display:block;position:fixed;inset:0;z-index:40;background:rgba(2,18,66,.45);
    backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);
    opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s;
  }
  #home.menu-open .rail-backdrop{opacity:1;visibility:visible}

  /* ---- Bảng menu bung ra từ bong bóng ---- */
  .rail{
    position:fixed;z-index:50;order:0;
    right:14px;bottom:calc(88px + env(safe-area-inset-bottom));
    width:min(330px,calc(100vw - 28px));max-height:68dvh;
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px 8px 8px;border-radius:26px;border:1px solid rgba(255,255,255,.14);
    box-shadow:0 30px 60px -20px rgba(2,20,71,.7);
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(16px) scale(.85);transform-origin:100% 100%;
    transition:transform .3s cubic-bezier(.34,1.4,.64,1),opacity .2s,visibility .2s;
  }
  #home.menu-open .rail{opacity:1;visibility:visible;pointer-events:auto;transform:none}

  .rail-logo{display:grid;width:100%;height:auto;margin:0 0 8px;cursor:default}
  .rail-logo:hover{background:none}
  .rl-mark{font-size:15px}

  .rail-nav{
    display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
    overflow-y:auto;overflow-x:hidden;padding:2px;flex:1;min-height:0;
    align-items:start;justify-items:stretch;
  }
  .ri{width:100%;padding:8px 2px}
  .ri .lb{max-width:92px;white-space:normal;text-align:center;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .sep{grid-column:1/-1;width:100%;margin:4px 0}

  .rail-bottom{
    flex-direction:row;justify-content:space-between;align-items:center;
    width:100%;margin-top:8px;padding:8px 6px 0;border-top:1px solid rgba(255,255,255,.14);border-left:0;
  }
  .ri.user{display:flex;flex-direction:row;width:auto;gap:8px}
  .ri.user .lb{max-width:110px;font-weight:600;white-space:nowrap;display:block}
  .ri.out{flex-direction:row;width:auto;gap:8px;padding:6px 10px}
  .ri.out .ic{width:34px;height:34px}
  .ri.out .lb{display:block;white-space:nowrap;max-width:none}

  .banner{margin:14px 14px 4px;border-radius:18px}
  .grid{padding:12px 14px 96px;grid-template-columns:1fr}
}
@media (min-width:768px) and (max-width:1023px){
  #home{grid-template-columns:76px minmax(0,1fr)}
  .grid{grid-template-columns:repeat(2,1fr)}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}