/* ==========================================================================
   knowledge-hub.css — style.css এর color/font টোকেন ব্যবহার করে
   ========================================================================== */

/* ---------------- প্রিমিয়াম হেডার রিডিজাইন (শুধু Knowledge Hub পেজের জন্য) ---------------- */
.kh-header{
  background: rgba(30,41,59,.82);
  padding: 0 1.4rem;
  height: 74px;
  display:flex; align-items:center;
  position: sticky; top:0; z-index: 20;
  box-shadow: 0 4px 20px rgba(0,0,0,.22);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.kh-header-inner{
  max-width: 900px; margin: 0 auto; width:100%;
  display:flex; align-items:center; justify-content:space-between;
  gap: .8rem;
}
.kh-brand{ display:flex; align-items:center; gap:.7rem; min-width:0; }

.kh-profile-photo{
  width: 44px; height:44px; border-radius:50%;
  object-fit: cover; flex-shrink:0;
  border: 2px solid rgba(255,255,255,.85);
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
}

.kh-logo-mark{
  width: 40px; height:40px; border-radius: 11px;
  background: linear-gradient(135deg, #F5D485 0%, #C79A3B 55%, #B9770E 100%);
  color:#1B2A45; font-family: var(--font-display); font-weight:700; font-size:1.15rem;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
  box-shadow: 0 3px 10px rgba(199,154,59,.4), inset 0 1px 0 rgba(255,255,255,.35);
}

.kh-brand-name{ display:flex; flex-direction:column; line-height:1.2; min-width:0; }
.kh-brand-main{
  color:#fff; font-family: var(--font-display); font-weight:700; font-size:1.05rem;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.kh-brand-sub{
  color: rgba(255,255,255,.62); font-family: var(--font-util); font-size:.72rem;
  letter-spacing:.04em; white-space:nowrap;
}

@media (max-width: 480px){
  .kh-header{ height:68px; padding:0 1rem; }
  .kh-profile-photo{ width:38px; height:38px; }
  .kh-logo-mark{ width:36px; height:36px; font-size:1.05rem; border-radius:10px; }
  .kh-brand-main{ font-size:.96rem; max-width: 34vw; }
  .kh-back.btn3d{ padding:.5rem .9rem; font-size:.78rem; }
}

.kh-main{ max-width: 900px; margin: 0 auto; padding: 2.5rem 1.4rem 4rem; }
.kh-intro{ margin-bottom: 2.2rem; }
.kh-intro .section-sub{ max-width: none; }

.kh-card{
  background: var(--card-bg); border:1px solid var(--line); border-radius: 16px;
  border-top: 5px solid var(--line);
  padding: 1.6rem 1.6rem 1.8rem; margin-bottom: 1.6rem; box-shadow: var(--shadow);
}
.kh-card--mint{   border-top-color: #2ECC71; }
.kh-card--sky{    border-top-color: #3B82F6; }
.kh-card--amber{  border-top-color: #F5A623; }
.kh-card--violet{ border-top-color: #9B59B6; }

.kh-card-title{ font-family: var(--font-display); color: var(--ink); font-size: 1.15rem; margin: 0 0 1.1rem; }

/* ---------------- রঙিন 3D বাটন সিস্টেম ---------------- */
.btn3d{
  display:inline-block;
  border:none; cursor:pointer;
  font-family: var(--font-body); font-weight:700; font-size:.92rem;
  color:#fff; border-radius: 12px; padding: .75rem 1.5rem;
  box-shadow: 0 5px 0 var(--btn-shadow, #333), 0 8px 16px rgba(0,0,0,.18);
  transform: translateY(0);
  transition: transform .12s ease, box-shadow .12s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn3d:hover{ filter: brightness(1.05); }
.btn3d:active{
  transform: translateY(5px);
  box-shadow: 0 0 0 var(--btn-shadow, #333), 0 2px 6px rgba(0,0,0,.18);
}
.btn3d:disabled{ opacity:.5; cursor:not-allowed; transform:none !important; }

.btn-mint{   background:#2ECC71; --btn-shadow:#1E9A56; }
.btn-sky{    background:#3B82F6; --btn-shadow:#1D4ED8; }
.btn-coral{  background:#FF6B6B; --btn-shadow:#C0392B; }
.btn-violet{ background:#9B59B6; --btn-shadow:#6C3483; }
.btn-amber{  background:#F5A623; --btn-shadow:#B9770E; }
.btn-indigo{ background:#6C5CE7; --btn-shadow:#4834B4; }
.btn-rose{   background:#FF4D79; --btn-shadow:#C22B54; }
.btn-teal{   background:#12B5A6; --btn-shadow:#0B8479; }

.kh-back.btn3d{ padding: .6rem 1.2rem; font-size: .85rem; }

/* ---------------- রেজিস্টার খাতার নিচের অ্যাকশন বাটন (CSV / মুছে ফেলুন) ---------------- */
.kh-register-actions{
  display:flex; flex-wrap:wrap; gap:1rem; margin: 0 0 1.3rem;
}
.kh-register-actions .btn3d{
  flex: 1 1 240px; text-align:center;
  padding: .9rem 1.4rem; font-size: .95rem; border-radius: 14px;
  letter-spacing:.2px;
}
.btn-download{
  background: linear-gradient(180deg, #34D399, #1FA971);
  --btn-shadow:#0E7A50;
  box-shadow: 0 5px 0 var(--btn-shadow), 0 10px 20px rgba(16,150,100,.28);
}
.btn-danger{
  background: linear-gradient(180deg, #FF6B6B, #E5372F);
  --btn-shadow:#A81F1A;
  box-shadow: 0 5px 0 var(--btn-shadow), 0 10px 20px rgba(200,40,30,.28);
}
.btn-download:hover, .btn-danger:hover{
  filter: brightness(1.08);
  transform: translateY(-1px);
}
.btn-download:active, .btn-danger:active{
  transform: translateY(5px);
  box-shadow: 0 0 0 var(--btn-shadow), 0 3px 8px rgba(0,0,0,.2);
}
@media (max-width:520px){
  .kh-register-actions{ flex-direction:column; }
  .kh-register-actions .btn3d{ flex-basis:auto; }
}

/* ---------------- ডুপ্লিকেট হাজিরা সতর্কতা মোডাল ---------------- */
.kh-modal-overlay{
  display:none; position:fixed; inset:0; z-index:10000;
  background: rgba(27,42,69,.55); align-items:center; justify-content:center;
  padding: 1.2rem;
}
.kh-modal-card{
  background: var(--card-bg, #FFF8EC); border-radius:18px;
  padding: 1.9rem 1.6rem; max-width: 380px; width:100%; text-align:center;
  border-top: 5px solid #F5A623;
  box-shadow: 0 20px 45px rgba(0,0,0,.3);
}
.kh-modal-icon{ font-size:2rem; margin:0 0 .6rem; }
.kh-modal-text{
  font-family: var(--font-body); color: var(--ink); font-size:1rem;
  line-height:1.55; margin: 0 0 1.5rem;
}
.kh-modal-actions{ display:flex; gap:.8rem; justify-content:center; flex-wrap:wrap; }
.kh-modal-actions .btn3d{ flex:1 1 140px; padding:.75rem 1rem; font-size:.88rem; }
.kh-advance-wrap{
  display:inline-flex; align-items:center; gap:.4rem;
  background:#fff; border:1.5px solid var(--line, #D8CBB0); border-radius: 12px;
  padding:.3rem .6rem;
  box-shadow: 0 2px 0 rgba(0,0,0,.06), 0 4px 10px rgba(0,0,0,.08);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.kh-advance-wrap:focus-within{
  border-color:#F5A623; box-shadow: 0 2px 0 rgba(0,0,0,.06), 0 0 0 3px rgba(245,166,35,.22);
}
.kh-advance-prefix{
  font-family: var(--font-display); font-weight:700; font-size:.82rem;
  color:#B9770E; letter-spacing:.3px;
}
.kh-advance-input{
  width: 5.2rem; border:none; background:transparent; padding:.15rem 0;
  font-family: var(--font-body); font-weight:600; font-size:.92rem; color: var(--ink);
}
.kh-advance-input:focus{ outline:none; }
.kh-advance-input:disabled{ opacity:.6; }
@media (max-width:520px){
  .kh-advance-wrap{ padding:.25rem .5rem; }
  .kh-advance-input{ width:4.2rem; }
}

/* ছোট আইকন-বাটন (রেজিস্টার রো ডিলিট, চিপ রিমুভ) এর জন্য হালকা সংস্করণ */
.btn3d.btn-small{
  padding: .4rem .6rem; border-radius: 8px; font-size:.85rem;
  box-shadow: 0 3px 0 var(--btn-shadow, #333), 0 5px 10px rgba(0,0,0,.15);
}
.btn3d.btn-small:active{ transform: translateY(3px); box-shadow: 0 0 0 var(--btn-shadow, #333); }

.kh-add-row{ display:flex; gap:.6rem; flex-wrap:wrap; margin-bottom: 1rem; }
.kh-add-row input{
  flex:1; min-width: 200px; padding:.7rem 1rem; border-radius:10px; border:1px solid var(--line);
  font-family: var(--font-body); font-size: .95rem; background:#fff;
}

.chip-row{ display:flex; flex-wrap:wrap; gap:.7rem; }
.member-chip{
  display:flex; align-items:center; gap:.6rem;
  border-radius: 999px; padding: .45rem .5rem .45rem 1.1rem;
  font-size:.92rem; font-weight:700; color:#fff;
  box-shadow: 0 4px 0 rgba(0,0,0,.18), 0 6px 10px rgba(0,0,0,.12);
}
.member-chip button{
  border:none; cursor:pointer; color:#fff; font-size:.8rem; font-weight:700;
  width: 24px; height:24px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background: rgba(0,0,0,.18);
  transition: transform .12s ease, background .15s ease;
}
.member-chip button:hover{ background: rgba(0,0,0,.32); }
.member-chip button:active{ transform: translateY(2px) scale(.92); }

.chip-mint{   background:#2ECC71; }
.chip-sky{    background:#3B82F6; }
.chip-coral{  background:#FF6B6B; }
.chip-violet{ background:#9B59B6; }
.chip-amber{  background:#F5A623; }
.chip-indigo{ background:#6C5CE7; }
.chip-rose{   background:#FF4D79; }
.chip-teal{   background:#12B5A6; }

.kh-empty-note{ color: var(--muted); font-size:.9rem; margin-top: .8rem; }

.kh-form{ display:grid; gap: 1.1rem; grid-template-columns: 1fr 1fr; }
.kh-field{ display:flex; flex-direction:column; gap:.4rem; }
.kh-field label{ font-size:.85rem; color: var(--muted); font-weight:600; }
.kh-field input[type="date"],
.kh-field input[type="number"],
.kh-field select{
  padding:.65rem .9rem; border-radius:10px; border:1px solid var(--line);
  font-family: var(--font-body); font-size:.95rem; background:#fff; color: var(--charcoal);
}
.radio-row{ display:flex; gap: 1.2rem; font-size:.9rem; align-items:center; padding-top:.3rem; }
.radio-row label{ display:flex; align-items:center; gap:.4rem; font-weight:400; color: var(--charcoal); }
.kh-save-btn{ grid-column: 1 / -1; border:none; cursor:pointer; justify-self:start; }

@media (max-width: 620px){
  .kh-form{ grid-template-columns: 1fr; }
}

.table-wrap{ overflow-x:auto; }
.kh-table{ width:100%; border-collapse: collapse; font-size:.9rem; }
.kh-table th, .kh-table td{ text-align:left; padding:.65rem .8rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
.kh-table th{ color: var(--muted); font-family: var(--font-util); font-size:.75rem; letter-spacing:.06em; text-transform:uppercase; }
.kh-table td.status-leave{ color: var(--gold); font-weight:600; }
.kh-table td.status-duty{ color: var(--teal); font-weight:600; }
.kh-table .row-delete{
  background:#FF6B6B; border:none; color:#fff; cursor:pointer; font-size:.85rem;
  border-radius:8px; padding:.35rem .55rem;
  box-shadow: 0 3px 0 #C0392B, 0 5px 8px rgba(0,0,0,.15);
  transition: transform .12s ease, box-shadow .12s ease;
}
.kh-table .row-delete:active{ transform: translateY(3px); box-shadow: 0 0 0 #C0392B; }

.filter-row select{
  padding:.55rem .9rem; border-radius: 10px; border: 2px solid #9B59B6;
  font-family: var(--font-body); background:#fff; margin-bottom: 1rem;
}

.kh-card--sky .kh-field input,
.kh-card--sky .kh-field select{ border: 2px solid #3B82F6; }
.kh-card--mint .kh-add-row input{ border: 2px solid #2ECC71; }


  

/* ---------------- লগইন গেট ---------------- */
.kh-auth-gate{
  min-height: 70vh; display:flex; align-items:center; justify-content:center;
  padding: 2rem 1.4rem;
}
.kh-auth-box{
  max-width: 420px; text-align:center; background: var(--card-bg);
  border: 1px solid var(--line); border-radius: 18px; padding: 2.4rem 2rem;
  box-shadow: var(--shadow);
}
.kh-auth-icon{ font-size: 2.2rem; margin-bottom: .8rem; }
.kh-auth-box h2{ font-family: var(--font-display); color: var(--ink); font-size: 1.25rem; margin: 0 0 .7rem; }
.kh-auth-box p{ color: var(--muted); font-size: .92rem; margin: 0 0 1.4rem; line-height:1.7; }
.kh-google-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.6rem;
  border:none; cursor:pointer; width:100%;
}
.kh-google-icon{ width:20px; height:20px; background:#fff; border-radius:50%; padding:2px; }
.kh-auth-error{ color:#c0392b; font-size:.85rem; margin-top:1rem; }

/* ---------------- ইউজার বার ---------------- */
.kh-user-bar{
  max-width: 900px; margin: 0 auto; padding: .8rem 1.4rem 0;
  display:flex; align-items:center; justify-content:flex-end; gap:.7rem; flex-wrap:wrap;
}
.kh-user-email{ color: var(--muted); font-size:.85rem; font-family: var(--font-util); margin-right:auto; }

/* ---------------- একাধিক সাইন-ইন প্রোভাইডার বাটন ---------------- */
.kh-provider-btn{
  display:flex; align-items:center; justify-content:center; gap:.6rem;
  border:none; cursor:pointer; width:100%; margin-bottom:.7rem;
}
.kh-provider-icon{ width:20px; height:20px; display:inline-flex; align-items:center; justify-content:center; }
.kh-fb-icon{
  background:#fff; color:#1877F2; border-radius:50%; font-weight:900; font-family:serif; font-size:.95rem;
}

.kh-phone-form{ margin-top:.4rem; text-align:left; }
.kh-phone-input{
  width:100%; padding:.7rem .9rem; border-radius:10px; border:1px solid var(--line);
  font-family: var(--font-body); font-size:.95rem; margin-bottom:.6rem; box-sizing:border-box;
}
.kh-code-row{ display:flex; flex-direction:column; gap:.5rem; margin-top:.5rem; }