/* ============================================================
   Ủng hộ Matrix Hanzi — modal & điểm nhấn chung cho /vi/ và /en/
   Dùng lại toàn bộ design token của trang (theme sáng · tối).
   ============================================================ */

/* --- Điểm nhấn trên header --- */
.support-entry{gap:8px;min-height:40px;padding:0 16px;border-radius:8px;font-size:13px;border-color:transparent;background:color-mix(in srgb,var(--color-gold) 14%,transparent);color:var(--color-gold)}
.support-entry:hover{background:color-mix(in srgb,var(--color-gold) 26%,transparent);border-color:transparent}
.support-entry svg{width:16px;height:16px;flex:none}

/* --- Nút nhã nhần trong footer --- */
button.support-footer-entry{background:none;border:0;padding:6px 0;color:var(--color-muted);font:inherit;font-size:var(--text-sm);text-align:left;cursor:pointer;transition:color var(--transition-fast)}
button.support-footer-entry:hover{color:var(--color-text)}

/* --- Lớp phủ & tấm thiệp --- */
.support-modal{position:fixed;inset:0;z-index:1200;display:flex;align-items:center;justify-content:center;padding:var(--space-5)}
.support-modal[hidden]{display:none}
.support-backdrop{position:absolute;inset:0;border:0;padding:0;background:rgba(16,12,8,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);opacity:0;transition:opacity var(--transition-base)}
.support-modal.show .support-backdrop{opacity:1}
.support-sheet{position:relative;width:min(430px,100%);max-height:calc(100vh - 2*var(--space-5));max-height:calc(100dvh - 2*var(--space-5));overflow:auto;border:1px solid var(--color-line);border-radius:var(--radius-2xl);background:var(--color-card);box-shadow:var(--shadow-lg);padding:var(--space-8) var(--space-6) var(--space-6);opacity:0;transform:translateY(16px) scale(.97);transition:opacity var(--transition-base),transform var(--transition-base);outline:none}
.support-modal.show .support-sheet{opacity:1;transform:none}

.support-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border:1px solid var(--color-line);border-radius:var(--radius-full);background:var(--color-soft);color:var(--color-muted);font-size:14px;line-height:1;cursor:pointer;transition:all var(--transition-fast)}
.support-close:hover{color:var(--color-text);border-color:var(--color-gold)}

/* --- Đoạn mở đầu --- */
.support-badge{display:grid;place-items:center;width:46px;height:46px;margin:0 auto var(--space-4);border-radius:var(--radius-full);background:color-mix(in srgb,var(--color-gold) 14%,transparent);color:var(--color-gold)}
.support-badge svg{width:22px;height:22px}
.support-title{margin:0 0 var(--space-3);font-family:var(--font-ui);font-size:var(--text-2xl);font-weight:700;letter-spacing:-.02em;text-align:center;color:var(--color-text)}
.support-lede{margin:0 0 var(--space-6);color:var(--color-muted);font-size:var(--text-sm);line-height:1.65;text-align:center}
/* Màn hình thấp: giới hạn số dòng dẫn đầu (JS đặt -webkit-line-clamp) */
.support-lede.clamped{display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}

/* --- Tab Trong nước / Quốc tế --- */
.support-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-soft);margin-bottom:var(--space-5)}
.support-tab{min-height:40px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--color-muted);font:inherit;font-size:var(--text-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}
.support-tab:hover{color:var(--color-text)}
.support-tab.active{color:#fff;background:linear-gradient(135deg,var(--color-gold),var(--color-gold-dark));box-shadow:0 4px 12px rgba(208,154,67,.3)}

/* --- QR & thông tin tài khoản: cụm gọn, xếp cạnh nhau --- */
.support-wallet{display:flex;align-items:center;gap:var(--space-4);margin-bottom:var(--space-5)}
.support-qr{flex:none;width:196px;overflow:hidden;border:1px solid var(--color-line);border-radius:var(--radius-lg);background:#f4f6e8}
.support-qr img{display:block;width:100%;height:auto;aspect-ratio:600/641;object-fit:cover}
@media (min-width:420px){.support-modal .support-qr{width:216px}}
.support-rows{flex:1;min-width:0;display:flex;flex-direction:column;gap:var(--space-2)}
.support-row{display:flex;flex-direction:column;padding:var(--space-2) var(--space-3);border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-soft)}
.support-row small{color:var(--color-muted);font-size:var(--text-xs)}
.support-row b{font-size:var(--text-sm);font-weight:600;word-break:break-word}
.support-row .support-copy{margin-top:var(--space-2);align-self:flex-start}
.support-copy{flex:none;border:1px solid var(--color-gold);border-radius:var(--radius-sm);background:transparent;color:var(--color-gold);padding:6px 12px;font:inherit;font-size:var(--text-xs);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}
.support-copy:hover{background:color-mix(in srgb,var(--color-gold) 12%,transparent)}

/* --- Kênh quốc tế --- */
.support-channel{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-3);padding:var(--space-4);border-radius:var(--radius-lg);text-decoration:none;font-weight:600;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}
.support-channel:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.16)}
.support-channel strong{display:block;font-family:var(--font-ui)}
.support-channel small{display:block;margin-top:2px;font-weight:400;opacity:.82;font-size:var(--text-xs)}
.support-channel .channel-go{font-size:var(--text-lg)}
.support-channel.paypal{background:#0070ba;color:#fff}
.support-channel.bmc{background:#ffdd00;color:#221d05}

/* --- Lời nhắn & toast --- */
.support-foot{margin-top:var(--space-5);padding-top:var(--space-4);border-top:1px solid var(--color-line);color:var(--color-muted);font-size:var(--text-sm);line-height:1.6;text-align:center}
.support-foot a{color:var(--color-gold);font-weight:600;text-decoration:none}
.support-foot a:hover{text-decoration:underline}
.support-toast{position:fixed;left:50%;bottom:calc(28px + env(safe-area-inset-bottom,0px));transform:translate(-50%,8px);z-index:1300;padding:10px 18px;border-radius:var(--radius-full);background:var(--color-text);color:var(--color-bg);font-size:var(--text-sm);font-weight:600;opacity:0;pointer-events:none;transition:opacity var(--transition-base),transform var(--transition-base)}
.support-toast.show{opacity:1;transform:translate(-50%,0)}

/* ============================================================
   DESKTOP (≥1024px): khung ngang rộng rãi — tiêu đề và dòng dẫn
   đầu tràn dòng tự nhiên phía trên, tabs + nội dung động xếp
   đều 2 cột bên dưới, footer ghi chú khép lại. Không bóp chữ.
   ============================================================ */
@media (min-width:1024px){
  .support-sheet{width:min(760px,100%);max-width:none;padding:36px 48px 30px;overflow:visible}
  .support-badge{display:none}
  .support-title{font-size:var(--text-2xl);text-align:left}
  .support-lede{font-size:var(--text-sm);line-height:1.7;text-align:left;margin:0 0 var(--space-5)}
  .support-lede.clamped{display:block;-webkit-line-clamp:unset !important;overflow:visible;max-height:none !important}

  /* Tabs căn giữa để dẫn hai cột bên dưới */
  .support-tabs{max-width:420px;margin:0 auto var(--space-6)}
  .support-tab{min-height:46px;font-size:var(--text-base)}

  /* Nội dung động: QR căn giữa, thông tin 2 cột đều nhau */
  .support-wallet{align-items:center;flex-direction:column;gap:var(--space-4)}
  .support-qr{width:min(230px,100%)}
  .support-rows{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3);width:100%}
  .support-row:last-child{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between}
  .support-row .support-copy{margin-top:0;align-self:auto}

  .support-channel{margin-bottom:var(--space-4);padding:var(--space-5)}
  .support-channel strong{font-size:var(--text-lg)}
  .support-channel small{font-size:var(--text-sm)}

  .support-foot{margin-top:var(--space-5);padding-top:var(--space-4)}
  .support-close{top:22px;right:22px}
}

/* Tablet dọc: vẫn 1 cột nhưng rộng hơn, chữ không bóp */
@media (min-width:641px) and (max-width:1023px){
  .support-sheet{width:min(520px,100%)}
  .support-lede.clamped{display:block;-webkit-line-clamp:unset !important;overflow:visible;max-height:none !important}
  .support-wallet{align-items:stretch;flex-direction:column;gap:var(--space-4)}
  .support-qr{width:100%}
  .support-rows{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3)}
  .support-row:last-child{grid-column:1 / -1;flex-direction:row;align-items:center;justify-content:space-between}
  .support-row .support-copy{margin-top:0;align-self:auto}
}

/* --- Di động: tấm thiệp trượt từ dưới lên --- */
@media (max-width:640px){
  .support-modal{padding:var(--space-2);align-items:flex-end}
  .support-sheet{border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:var(--space-6) var(--space-5) max(var(--space-6), calc(var(--space-6) + env(safe-area-inset-bottom,0px)))}
  .support-qr{width:140px}
  .support-entry{min-height:36px;padding:0 11px}
  .support-entry .entry-label{display:none}
}

@media (prefers-reduced-motion:reduce){
  .support-sheet,.support-backdrop,.support-toast{transition:none}
  .support-sheet{transform:none}
  .support-channel:hover{transform:none}
}