/* ShipItAll — Messaging UI (v1.0.90)
   Covers:
   - Product-page "Message seller" modal
   - Vendor dashboard Messages tab (filters, thread list, detail, reply) */

/* ====================================================================
   MODAL (product page)
   ==================================================================== */
.sia-msg-modal{position:fixed;inset:0;z-index:100000;display:flex;align-items:center;justify-content:center;padding:20px}
.sia-msg-modal[hidden]{display:none}
.sia-msg-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(2px)}
.sia-msg-modal-card{position:relative;background:#fff;border-radius:14px;max-width:480px;width:100%;padding:22px 22px 20px;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:siaMsgIn .18s ease-out}
@keyframes siaMsgIn{from{transform:translateY(12px);opacity:0}to{transform:none;opacity:1}}
.sia-msg-modal-x{position:absolute;top:8px;right:10px;background:none;border:0;font-size:28px;line-height:1;color:#999;cursor:pointer}
.sia-msg-modal-x:hover{color:#333}
.sia-msg-modal textarea{width:100%;border:1px solid var(--sia-border,#e2e2e2);border-radius:10px;padding:12px 14px;font-family:inherit;font-size:14px;resize:vertical;box-sizing:border-box}
.sia-msg-modal textarea:focus{outline:none;border-color:var(--sia-primary,#E8380D);box-shadow:0 0 0 3px rgba(232,56,13,.12)}
.sia-msg-modal-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;flex-wrap:wrap}
.sia-msg-modal-hint{font-size:11px;color:var(--sia-text-muted,#888);flex:1;min-width:180px}
.sia-msg-modal-status{margin-top:10px;font-size:13px;min-height:18px}
.sia-msg-modal-status.is-ok{color:#10a050}
.sia-msg-modal-status.is-err{color:#D93B3B}

/* ====================================================================
   DASHBOARD TAB
   ==================================================================== */
.sia-msg-filters{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.sia-msg-filter{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--sia-border,#e2e2e2);text-decoration:none;color:var(--sia-dark,#111);font-size:13px;font-weight:600}
.sia-msg-filter:hover{background:#fafafa}
.sia-msg-filter.is-active{background:var(--sia-dark,#111);color:#fff;border-color:var(--sia-dark,#111)}
.sia-msg-filter-count{background:rgba(0,0,0,.08);padding:1px 8px;border-radius:10px;font-size:11px;min-width:18px;text-align:center}
.sia-msg-filter.is-active .sia-msg-filter-count{background:rgba(255,255,255,.2)}

.sia-msg-layout{display:grid;grid-template-columns:340px 1fr;gap:18px;align-items:start}
@media (max-width:860px){.sia-msg-layout{grid-template-columns:1fr}}

.sia-msg-list{background:#fff;border:1px solid var(--sia-border,#e2e2e2);border-radius:12px;overflow:hidden;max-height:72vh;overflow-y:auto}
.sia-msg-empty{padding:40px 20px;text-align:center}

.sia-msg-row{display:flex;gap:12px;padding:12px 14px;border-bottom:1px solid var(--sia-border,#eee);text-decoration:none;color:inherit}
.sia-msg-row:last-child{border-bottom:0}
.sia-msg-row:hover{background:#fafafa}
.sia-msg-row.is-active{background:#fff5f0;border-left:3px solid var(--sia-primary,#E8380D);padding-left:11px}
.sia-msg-row.has-unread .sia-msg-row-top strong{color:var(--sia-primary,#E8380D)}

.sia-msg-row-avatar{width:36px;height:36px;border-radius:8px;background:linear-gradient(135deg,var(--sia-primary,#E8380D),#b82e0b);color:#fff;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sia-msg-row-body{min-width:0;flex:1}
.sia-msg-row-top{display:flex;align-items:center;gap:6px;margin-bottom:2px;font-size:13px}
.sia-msg-row-top strong{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sia-msg-row-time{font-size:11px;color:var(--sia-text-muted,#888);flex-shrink:0}
.sia-msg-dot{width:8px;height:8px;border-radius:50%;background:var(--sia-primary,#E8380D);flex-shrink:0}
.sia-msg-row-subject{font-size:12px;color:var(--sia-text-muted,#888);margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sia-msg-row-preview{font-size:12px;color:#666;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.sia-msg-detail{background:#fff;border:1px solid var(--sia-border,#e2e2e2);border-radius:12px;display:flex;flex-direction:column;min-height:72vh;max-height:72vh}
.sia-msg-detail-head{display:flex;justify-content:space-between;align-items:flex-start;padding:14px 16px;border-bottom:1px solid var(--sia-border,#eee);gap:12px;flex-wrap:wrap}
.sia-msg-detail-actions{display:flex;gap:8px}
.sia-msg-status-btn{padding:6px 12px;border:1px solid var(--sia-border,#e2e2e2);background:#fff;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer}
.sia-msg-status-btn:hover:not(:disabled){background:#fafafa}
.sia-msg-status-btn:disabled{opacity:.5;cursor:default}

.sia-msg-thread{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px;background:#fafafa}
.sia-msg-bubble{max-width:75%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.45}
.sia-msg-bubble-time{font-size:10px;opacity:.7;margin-top:4px}
.sia-msg-bubble.is-mine{align-self:flex-end;background:var(--sia-primary,#E8380D);color:#fff;border-bottom-right-radius:4px}
.sia-msg-bubble.is-theirs{align-self:flex-start;background:#fff;border:1px solid var(--sia-border,#e2e2e2);border-bottom-left-radius:4px}

.sia-msg-reply{padding:12px 14px;border-top:1px solid var(--sia-border,#eee);background:#fff;border-radius:0 0 12px 12px}
.sia-msg-reply textarea{width:100%;border:1px solid var(--sia-border,#e2e2e2);border-radius:10px;padding:10px 12px;font-family:inherit;font-size:13px;resize:vertical;box-sizing:border-box}
.sia-msg-reply textarea:focus{outline:none;border-color:var(--sia-primary,#E8380D);box-shadow:0 0 0 3px rgba(232,56,13,.12)}
.sia-msg-reply-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:8px;flex-wrap:wrap}
.sia-msg-reply-hint{font-size:11px;color:var(--sia-text-muted,#888)}
.sia-msg-reply-status{margin-top:6px;font-size:12px;min-height:16px}
.sia-msg-reply-status.is-ok{color:#10a050}
.sia-msg-reply-status.is-err{color:#D93B3B}