*{box-sizing:border-box}body{margin:0;background:#f5f6f8;color:#17202a;font:15px Arial,sans-serif}header{background:#fff;border-bottom:1px solid #ddd;padding:15px 5%;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:10}.brand{font-size:22px;font-weight:800;color:#111;text-decoration:none}.brand span{color:#68707b;font-weight:500}nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:#303842;text-decoration:none}.wrap{max-width:1200px;margin:auto;padding:25px 18px}.hero,.panel,.form,.card{background:#fff;border:1px solid #e2e5e9;border-radius:16px}.hero{padding:28px;margin-bottom:20px}.hero h1{margin:0 0 8px;font-size:36px}.muted{color:#6b7280}.search{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:9px}.input,select,textarea{width:100%;padding:11px;border:1px solid #cfd5dc;border-radius:9px;background:#fff}.btn{display:inline-block;border:0;border-radius:9px;background:#111827;color:#fff;padding:11px 15px;text-decoration:none;cursor:pointer}.btn.gray{background:#e5e7eb;color:#111}.btn.red{background:#b42318}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.card{overflow:hidden}.card img{width:100%;height:190px;object-fit:cover}.cardbody{padding:15px}.price{font-size:20px;font-weight:800}.meta{font-size:13px;color:#6b7280}.form{padding:24px;max-width:850px}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{margin:0 0 15px}.field label{display:block;font-weight:700;margin-bottom:6px}.flash{background:#e9f7ef;padding:12px;border-radius:9px;margin-bottom:15px}.error{background:#fff0f0;padding:12px;border-radius:9px;margin-bottom:15px;color:#9b1c1c}.detail{display:grid;grid-template-columns:1.4fr 1fr;gap:20px}.gallery,.panel{padding:18px}.gallery img{width:100%;max-height:600px;object-fit:contain}.thumbs{display:flex;gap:8px;overflow:auto}.thumbs img{width:90px;height:65px;object-fit:cover}.actions{display:flex;gap:8px;flex-wrap:wrap}.table{width:100%;border-collapse:collapse;background:#fff}.table th,.table td{padding:11px;border-bottom:1px solid #eee;text-align:left;vertical-align:top}footer{text-align:center;color:#777;padding:35px}@media(max-width:800px){.grid,.detail,.row,.search{grid-template-columns:1fr}header{align-items:flex-start;gap:10px;flex-direction:column}.hero h1{font-size:29px}}
.nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:#dc2626;color:#fff;font-size:12px;font-weight:700;line-height:1;vertical-align:middle;margin-left:4px}
.message-list{display:grid;gap:14px}.message-card{background:var(--surface,#fff);border:1px solid rgba(127,127,127,.18);border-radius:var(--radius,16px);padding:18px}.message-card.unread{border-left:4px solid var(--accent,#e3a008)}.message-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.message-title{font-weight:700}.message-meta{color:var(--muted,#6b7280);font-size:.9rem}.message-text{margin-top:12px;white-space:pre-wrap}.message-actions{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap}

.nav-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;vertical-align:middle;margin-right:5px;border:1px solid rgba(0,0,0,.12)}
.nav-avatar-placeholder{display:inline-flex;align-items:center;justify-content:center;background:#e5e7eb;color:#374151;font-size:12px;font-weight:800}
.profile-link{display:inline-flex;align-items:center}
.profile-avatar-large{width:140px;height:140px;border-radius:50%;overflow:hidden;border:1px solid #d8dde3;background:#eef1f4;display:flex;align-items:center;justify-content:center;margin:10px 0 18px}
.profile-avatar-large img{width:100%;height:100%;object-fit:cover}.profile-avatar-large span{font-size:52px;font-weight:800;color:#6b7280}


/* WhatsApp-style internal conversation */
.chat-message-list{display:flex;flex-direction:column;gap:8px}
.message-card.chat-message{width:fit-content;max-width:min(78%,720px);padding:10px 14px;border:0;border-radius:16px;box-shadow:0 1px 2px rgba(0,0,0,.08);position:relative}
.message-card.chat-message.received-message{align-self:flex-start;background:#f0f2f5;color:#17202a;border-top-left-radius:5px}
.message-card.chat-message.sent-message{align-self:flex-end;background:#d9fdd3;color:#17202a;border-top-right-radius:5px}
.message-card.chat-message .message-text{margin-top:0;white-space:pre-wrap;overflow-wrap:anywhere}
.message-card.chat-message .message-meta{margin-top:5px;text-align:right;font-size:.75rem;color:#667781}
.message-card.chat-message.received-message .message-meta{text-align:left}
.message-card.chat-message .message-head{margin-bottom:4px}
@media(max-width:600px){.message-card.chat-message{max-width:88%}}