/* =========================
   Liquid Glass (Light Theme)
   Mobile + PC friendly
   Includes FIX for mobile right overflow
   ========================= */

:root{
  --bg:#f5f5f7;
  --text:#121216;
  --muted:rgba(18,18,22,.62);
  --muted2:rgba(18,18,22,.52);

  --primary:#0a84ff;

  --radius:20px;
  --radius-lg:26px;

  --glass:rgba(255,255,255,.82);
  --glass-strong:rgba(255,255,255,.92);
  --glass-weak:rgba(255,255,255,.74);
  --glass-border:rgba(15,23,42,.08);
  --glass-border-strong:rgba(15,23,42,.12);

  --shadow:0 8px 24px rgba(15,23,42,.06);
  --shadow-hover:0 14px 32px rgba(15,23,42,.10);
  --inner-highlight:none;

  --grid-size:46px;
  --grid-line:rgba(0,0,0,.05);

  --blur:8px;
  --blur-strong:12px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --ease2:cubic-bezier(.4,0,.2,1);
  --dur:220ms;
}

*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;overflow-x:hidden} /* FIX */

body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
  color:var(--text);
  background-color:var(--bg);



  min-height:100vh;
  display:flex;
  flex-direction:column;
  position:relative;

  overflow-x:clip; /* FIX */
  max-width:100%;  /* FIX */
}

/* Liquid bloom lights (FIX: centered + vmax avoids overflow on mobile) */
body::before{
  content:"";
  position:fixed;
  pointer-events:none;

  left:50%;
  top:50%;
  width:120vmax;
  height:120vmax;
  transform:translate(-50%,-50%);

  background:
    radial-gradient(closest-side at 18% 22%, rgba(10,132,255,.10), transparent 60%),
    radial-gradient(closest-side at 82% 18%, rgba(52,199,89,.08), transparent 58%),
    radial-gradient(closest-side at 50% 90%, rgba(255,159,10,.06), transparent 60%);
  opacity:.9;
  z-index:0;
}

body::after{
  content:none;
}

/* ===== Mobile fixed background like PC (works on iOS/Android) ===== */

/* Fixed grid layer */
.bg-fixed{
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;

  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(0deg,
      transparent 0,
      transparent calc(var(--grid-size) - 1px),
      var(--grid-line) calc(var(--grid-size) - 1px),
      var(--grid-line) var(--grid-size)
    ),
    repeating-linear-gradient(90deg,
      transparent 0,
      transparent calc(var(--grid-size) - 1px),
      var(--grid-line) calc(var(--grid-size) - 1px),
      var(--grid-line) var(--grid-size)
    );

  /* giúp render mượt và “đứng im” */
  transform: translateZ(0);
}

/* Ensure bloom/noise are above bg-fixed but below content */
body::before,
body::after{
  z-index: 1;
}

/* Content above all background layers */
.container,
footer{
  position: relative;
  z-index: 2;
}

.container{
  flex:1;
  max-width:1200px;
  margin:0 auto;
  padding:48px 20px;
  width:100%;
  position:relative;
  z-index:1;
}

header{text-align:center;margin-bottom:60px}
h1{
  font-size:2.65rem;
  font-weight:720;
  letter-spacing:-.03em;
  margin-bottom:12px;
}
.subtitle{font-size:1.08rem;color:var(--muted);font-weight:460}

/* Glass utility (optional) */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);
}

/* Cards */
.tab-panels{
  margin-bottom:20px;
}

.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:22px;
  margin-bottom:0;
}

.tab-panels > .card-grid{
  display:none;
}

.tab-panels > .card-grid.is-active{
  display:grid;
}

.tab-panels > .card-grid.tab-panel-in{
  animation:tabPanelIn 560ms cubic-bezier(.22,1,.36,1);
}
.card{
  position:relative;
  border-radius:var(--radius-lg);
  padding:40px 24px;
  text-align:center;
  cursor:pointer;
  text-decoration:none;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  min-height:108px;
  color:inherit;

  background:var(--glass);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);

  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.card::before{
  content:none;
}
.card::after{
  content:none;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:var(--glass-border-strong);
  background:var(--glass-strong);
}
.card:active{transform:translateY(0)}
.card h3{font-size:1.58rem;font-weight:760;margin-bottom:8px;letter-spacing:-.02em}
.card p{font-size:.96rem;color:var(--muted2);line-height:1.45}

/* Accent */
.card:nth-child(1) h3{color:#5e5ce6}
.card:nth-child(2) h3{color:#ff2d55}
.card:nth-child(3) h3{color:#0a84ff}
.card:nth-child(4) h3{color:#34c759}
.card:nth-child(5) h3{color:#ff9f0a}
.card:nth-child(6) h3{color:#64d2ff}

.card:nth-child(1):hover{border-color:rgba(94,92,230,.45)}
.card:nth-child(2):hover{border-color:rgba(255,45,85,.45)}
.card:nth-child(3):hover{border-color:rgba(10,132,255,.45)}
.card:nth-child(4):hover{border-color:rgba(52,199,89,.45)}
.card:nth-child(5):hover{border-color:rgba(255,159,10,.45)}
.card:nth-child(6):hover{border-color:rgba(100,210,255,.45)}

/* Comments */
.comments-section{
  max-width:860px;
  margin:60px auto 0;
  border-radius:var(--radius-lg);
  padding:34px;
  position:relative;

  background:var(--glass-weak);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);
}
.comments-section::before{
  content:none;
}
.comments-title{font-size:1.55rem;font-weight:740;margin-bottom:22px;letter-spacing:-.02em;position:relative}
.comment-form{margin-bottom:28px;position:relative}
.form-group{margin-bottom:16px;position:relative}

.form-group label{display:block;font-size:.92rem;color:var(--muted);margin-bottom:8px;font-weight:650;letter-spacing:-.01em}
.form-group input,.form-group textarea{
  width:100%;
  padding:12px 16px;
  border-radius:14px;
  font-size:1rem;
  font-family:inherit;

  color:var(--text);
  background:rgba(255,255,255,.92);
  border:1px solid rgba(15,23,42,.10);
  box-shadow:inset 0 1px 2px rgba(15,23,42,.03);
  transition:border-color var(--dur) var(--ease2),box-shadow var(--dur) var(--ease2),background var(--dur) var(--ease2),transform var(--dur) var(--ease2);
}
.form-group input:focus,.form-group textarea:focus{
  outline:none;
  border-color:rgba(10,132,255,.35);
  box-shadow:0 0 0 4px rgba(10,132,255,.12);
  background:#fff;
}
.form-group textarea{resize:vertical;min-height:110px}

.submit-btn{
  background:linear-gradient(180deg,rgba(10,132,255,.98),rgba(10,132,255,.86));
  color:#fff;
  border:1px solid rgba(10,132,255,.18);
  padding:12px 32px;
  border-radius:14px;
  font-size:1rem;
  font-weight:720;
  cursor:pointer;
  box-shadow:0 8px 18px rgba(10,132,255,.18);
  transition:transform var(--dur) var(--ease),filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.submit-btn:hover{
  filter:brightness(1.03);
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(10,132,255,.22);
}
.submit-btn:active{transform:translateY(0)}
.submit-btn:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}

.comments-list{
  margin-bottom:24px;
  border-radius:16px;
  overflow:hidden;
  background:var(--glass-weak);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow);
  position:relative;
}
.comments-list > .loading{display:none}
.comment-item{position:relative;padding:20px 20px 44px 20px;border-bottom:1px solid rgba(0,0,0,.06);display:block;background:rgba(255,255,255,.9)}
.comment-item:last-child{border-bottom:none}
.comment-main{min-width:0}
.comment-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;gap:10px}
.comment-author{font-weight:760;font-size:1rem}
.comment-date{font-size:.86rem;color:var(--muted2)}
.comment-text{color:var(--text);line-height:1.65;font-size:.96rem}

.comment-skeleton{
  position:relative;
  padding:20px;
  border-bottom:1px solid rgba(0,0,0,.06);
  background:rgba(255,255,255,.88);
}
.comment-skeleton:last-child{border-bottom:none}
.skeleton-line{
  height:12px;
  border-radius:999px;
  background:linear-gradient(90deg, rgba(226,232,240,.9) 0%, rgba(241,245,249,1) 50%, rgba(226,232,240,.9) 100%);
  background-size:200% 100%;
  animation:skeletonShimmer 1.2s linear infinite;
}
.skeleton-line + .skeleton-line{margin-top:10px}
.skeleton-line.short{width:32%}
.skeleton-line.mid{width:68%}
.skeleton-line.long{width:100%}

.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:22px}
.page-btn{
  min-width:42px;height:42px;padding:0 12px;border-radius:14px;
  font-size:.95rem;font-weight:720;color:var(--text);cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-border);
  box-shadow:0 6px 16px rgba(15,23,42,.06);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.page-btn:hover{
  transform:translateY(-1px);
  border-color:rgba(10,132,255,.35);
  box-shadow:0 10px 20px rgba(15,23,42,.10);
  background:var(--glass-strong);
}
.page-btn.active{
  background:linear-gradient(180deg,rgba(10,132,255,.98),rgba(10,132,255,.86));
  color:#fff;border-color:rgba(255,255,255,.32);
  box-shadow:0 10px 20px rgba(10,132,255,.22);
}
.page-btn:disabled{opacity:.35;cursor:not-allowed;transform:none!important;box-shadow:none}
.pagination-ellipsis{color:var(--muted2);padding:0 6px;user-select:none}

.empty-state,.loading{text-align:center;padding:40px 20px;color:var(--muted2)}

@keyframes skeletonShimmer{
  from{background-position:200% 0}
  to{background-position:-200% 0}
}
@media (prefers-reduced-motion:reduce){
  .card,.page-btn,.submit-btn{transition:none!important}
  .skeleton-line{animation:none!important}
}

/* =========================
   Tab Toggle – Apple pill (Tứ trụ / CK lẻ)
   ========================= */

.tab-toggle-wrap{
  text-align:center;
  margin-bottom:32px;
}

.tab-toggle{
  position:relative;
  display:inline-flex;
  background-color:#ffffff;
  border-radius:30px;
  padding:4px;
  width:300px;
  height:46px;
  box-shadow:0 2px 6px rgba(0,0,0,.10);
  overflow:hidden;
}

/* sliding background pill */
.tab-toggle-slider{
  position:absolute;
  top:4px;
  left:4px;
  width:calc(33.333% - 2.667px);
  height:calc(100% - 8px);
  background-color:#F5F5F7;
  border-radius:30px;
  transition:transform 560ms cubic-bezier(.22,1,.36,1);
  z-index:0;
}

/* tab buttons */
.tab-toggle-btn{
  flex:1;
  position:relative;
  background:transparent;
  border:none;
  border-radius:30px;
  padding:8px 20px;
  font-size:15px;
  font-weight:400;
  font-family:inherit;
  color:#333;
  cursor:pointer;
  z-index:1;
  transition:color 220ms ease, font-weight 220ms ease, opacity 220ms ease;
  -webkit-tap-highlight-color:transparent;
  outline:none;
}
.tab-toggle-btn.active{
  color:#000000;
  font-weight:600;
  box-shadow:inset 0 2px 4px rgba(0,0,0,.10);
}

/* ===== Tab grid fade transitions ===== */
@keyframes tabPanelIn{
  from{
    opacity:0;
    transform:translate3d(0, 8px, 0) scale(.985);
    filter:saturate(.96);
  }
  to{
    opacity:1;
    transform:translate3d(0, 0, 0) scale(1);
    filter:saturate(1);
  }
}

@media (prefers-reduced-motion:reduce){
  .tab-toggle-slider{ transition:none !important; }
  .tab-toggle-btn{ transition:none !important; }
  .tab-panels > .card-grid.tab-panel-in{ animation:none !important; }
}

footer{
  position:relative;z-index:1;
  padding:22px 20px;text-align:center;
  background:var(--glass-weak);
  border-top:1px solid var(--glass-border);
  box-shadow:0 -1px 0 rgba(15,23,42,.04);
}
footer p{color:var(--muted2);font-size:.92rem}

@media (max-width:768px){
  header{margin-top:40px}
  h1{font-size:2.1rem}
  .subtitle{font-size:1rem}

  .card-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
  .card{padding:28px 20px}

  .comments-section{padding:24px 18px;margin-top:44px}
  .comments-title{font-size:1.35rem}

  .comment-header{flex-direction:column;align-items:flex-start;gap:4px}
}
@media (max-width:480px){
  .container{padding:34px 16px}
  header{margin-bottom:44px}

  h1{font-size:1.85rem}
  .card-grid{grid-template-columns:1fr}

  .comments-section{padding:20px 16px}
}

/* =========================
   Admin login button + modal (Liquid Glass)
   ========================= */

.admin-widgets{
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-btn{
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 10px 12px;
  border-radius: 999px;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  box-shadow: var(--shadow);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.admin-btn:hover{transform: translateY(-1px); box-shadow: var(--shadow-hover)}
.admin-btn:active{transform: translateY(0)}

.admin-icon{filter: drop-shadow(0 1px 0 rgba(255,255,255,.35))}
/* Icon-only button: vẫn giữ span trong DOM để JS set text, nhưng ẩn đi */
.admin-text{display:none}

.admin-dot{
  position: absolute;
  top: 8px;
  left: 8px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,45,85,.65);
  box-shadow: 0 0 0 2px rgba(255,255,255,.55);
}
.admin-dot.on{background: rgba(52,199,89,.75)}

/* Modal */
.modal-backdrop{
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(0,0,0,.28);
}
.modal-backdrop.open{display:flex}

.modal{
  width: min(460px, 100%);
  border-radius: 22px;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border-strong);
  box-shadow: 0 18px 42px rgba(15,23,42,.14);
  overflow: hidden;
}

.modal-header{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 10px;
}
.modal-title{font-size: 1.05rem; font-weight: 750; letter-spacing: -.02em}
.modal-sub{font-size: .92rem; color: var(--muted2); margin-top: 2px}

.icon-btn{
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,.92);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}

.modal-body{padding: 0 16px 16px}
.modal-actions{display:flex; gap: 10px; margin-top: 12px}

.ghost-btn{
  flex: 1;
  border-radius: 16px;
  padding: 14px 16px;
  font-weight: 650;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,.86);
  cursor: pointer;
}
.ghost-btn:hover{background: rgba(255,255,255,.96)}

.modal-note{margin-top: 10px; min-height: 18px; font-size: .92rem; color: var(--muted2)}

/* =========================
   Heart button
   ========================= */

.comment-actions{margin-top:0;display:flex;align-items:center;gap:10px;white-space:nowrap}

.heart-btn{
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 14px;
  padding: 9px 10px;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,.92);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.heart-btn:hover{background: #fff}
.heart-btn:active{transform: scale(.99)}
.heart-btn:disabled{opacity: .55; cursor: not-allowed}

.heart-ico{font-size: 1.12rem; line-height: 1; color: rgba(255,45,85,1)}
.heart-label{font-weight: 650}

.heart-btn.active{
  background: rgba(255,45,85,.16);
  border-color: rgba(255,45,85,.22);
}

@media (max-width: 480px){
  .admin-widgets{top: 12px; right: 12px}
  .admin-text{display:none}
  .admin-btn{padding: 10px 12px}
}


/* Tim + nhãn Admin bên phải góp ý */
.admin-badge{
  font-size:.82rem;
  font-weight:750;
  padding:6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15,23,42,.08);
  background: rgba(255,255,255,.88);
}
.heart-view{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 38px;
  height: 34px;
  border-radius: 14px;
  border: 1px solid rgba(255,45,85,.22);
  background: rgba(255,45,85,.10);
  color: rgba(255,45,85,1);
  font-size: 1.12rem;
  line-height: 1;
  user-select:none;
}


/* ===== Heart (Admin) bottom-right ===== */
.comment-actions{position:absolute;right:14px;bottom:12px;display:flex;align-items:center}
.heart-admin-btn{background:transparent;border:none;padding:0;margin:0;cursor:pointer;display:flex;align-items:center}
.heart-admin-text,.heart-admin-view{color:#e11d48;font-weight:700;letter-spacing:.2px}
.heart-admin-btn:not(.active) .heart-admin-text{opacity:.55}
.heart-admin-btn.active .heart-admin-text{opacity:1}


/* =========================
   Admin Announcement Popup (Apple simple)
   ========================= */
.announce-backdrop{
  position: fixed;
  inset: 0;
  z-index: 80; /* above admin widget/modal */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(0,0,0,.32);
}

.announce-backdrop.is-hidden{display:none}

.announce-modal{
  width: min(520px, 100%);
  border-radius: 22px;
  background: var(--glass-strong);
  border: 1px solid var(--glass-border-strong);
  box-shadow: 0 18px 42px rgba(15,23,42,.14);
  overflow: hidden;
}

.announce-header{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 10px;
}

.announce-title{
  font-size: 1.05rem;
  font-weight: 760;
  letter-spacing: -.02em;
}

.announce-sub{
  font-size: .92rem;
  color: var(--muted2);
  margin-top: 2px;
}

.announce-close{
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,.92);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}

.announce-body{padding: 0 16px 16px}
.announce-message{
  color: var(--text);
  line-height: 1.6;
  font-size: .98rem;
  margin-top: 6px;
}

.announce-actions{
  display:flex;
  justify-content:flex-end;
  gap: 10px;
  margin-top: 14px;
}

.announce-btn{
  border: 1px solid rgba(255,255,255,.35);
  background: linear-gradient(180deg, rgba(10,132,255,.98), rgba(10,132,255,.86));
  color: #fff;
  padding: 12px 18px;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 720;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(10,132,255,.18);
  transition: transform var(--dur) var(--ease), filter var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.announce-btn:hover{
  filter:brightness(1.03);
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(10,132,255,.22);
}
.announce-btn:active{transform:translateY(0)}

@media (max-width: 480px){
  .announce-backdrop{padding: 14px}
  .announce-modal{border-radius: 20px}
  .announce-title{font-size: 1rem}
  .announce-message{font-size: .95rem}
}

@media (max-width:768px){
  body::before{opacity:.72}
  .card,
  .comments-section,
  .comments-list,
  .admin-btn,
  .modal,
  .announce-modal{
    box-shadow:0 8px 20px rgba(15,23,42,.08);
  }
}