@import "https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap";:root{--bg-primary:#f8fafc;--bg-surface:#fff;--bg-hover:#fff7ed;--border-color:#e2e8f0;--border-orange:#fed7aa;--text-main:#0f172a;--text-muted:#64748b;--accent:#ff6b00;--accent-hover:#ea580c;--accent-light:#ff6b001a;--accent-glow:#ff6b0040;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--star-color:#f59e0b;--brand-orange:#ff6b00;--brand-white:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-main);min-height:100vh;font-family:Plus Jakarta Sans,sans-serif;overflow:hidden}.app-container{flex-direction:column;height:100vh;display:flex}.top-header{border-bottom:1px solid var(--border-color);background:#fff;justify-content:space-between;align-items:center;gap:20px;height:64px;padding:0 24px;display:flex;box-shadow:0 1px 3px #0000000a}.brand-section{align-items:center;gap:12px;min-width:220px;display:flex}.brand-logo{color:#fff;background:linear-gradient(135deg,#ff7a1a,#ea580c);border-radius:10px;justify-content:center;align-items:center;width:38px;height:38px;font-size:20px;font-weight:800;display:flex;box-shadow:0 4px 14px #ff6b0059}.brand-title{letter-spacing:-.5px;color:#0f172a;font-size:19px;font-weight:800}.search-bar-container{flex:1;max-width:720px;position:relative}.search-input{border:1px solid var(--border-color);color:#0f172a;background:#f1f5f9;border-radius:28px;outline:none;width:100%;padding:12px 18px 12px 46px;font-size:14px;transition:all .2s}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light);background:#fff}.search-icon{color:var(--text-muted);position:absolute;top:50%;left:16px;transform:translateY(-50%)}.header-actions{align-items:center;gap:16px;display:flex}.mailbox-selector{border:1px solid var(--border-color);color:#0f172a;cursor:pointer;background:#f8fafc;border-radius:8px;outline:none;padding:8px 14px;font-size:13px;font-weight:600}.main-layout{flex:1;display:flex;overflow:hidden}.sidebar{border-right:1px solid var(--border-color);background:#fff;flex-direction:column;gap:20px;width:260px;padding:20px 14px;display:flex}.btn-compose{color:#fff;cursor:pointer;background:linear-gradient(135deg,#ff7a1a,#ea580c);border:none;border-radius:14px;justify-content:center;align-items:center;gap:10px;padding:14px 22px;font-size:15px;font-weight:700;transition:all .2s;display:flex;box-shadow:0 6px 18px #ff6b0059}.btn-compose:hover{transform:translateY(-2px);box-shadow:0 8px 24px #ff6b0080}.nav-menu{flex-direction:column;gap:4px;display:flex}.nav-item{color:#475569;cursor:pointer;border-radius:10px;justify-content:space-between;align-items:center;padding:10px 14px;font-size:14px;font-weight:600;text-decoration:none;transition:all .15s;display:flex}.nav-item:hover{color:#ea580c;background:#fff7ed}.nav-item.active{color:#ea580c;background:#fff7ed;border-left:3px solid #ff6b00;font-weight:700}.nav-label{align-items:center;gap:12px;display:flex}.badge-unread{color:#fff;background:#ff6b00;border-radius:12px;padding:2px 7px;font-size:11px;font-weight:800;box-shadow:0 2px 8px #ff6b004d}.content-area{background:#f8fafc;flex:1;display:flex;overflow:hidden}.mail-list-panel{border-right:1px solid var(--border-color);background:#fff;flex-direction:column;flex:1;display:flex;overflow:hidden}.mail-toolbar{border-bottom:1px solid var(--border-color);background:#fff;justify-content:space-between;align-items:center;height:52px;padding:0 18px;display:flex}.mail-list{flex:1;overflow-y:auto}.mail-row{cursor:pointer;color:#475569;border-bottom:1px solid #f1f5f9;align-items:center;gap:16px;padding:14px 18px;transition:background .15s;display:flex}.mail-row:hover{background:#fff7ed}.mail-row.selected{border-left:3px solid var(--accent);background:#ffedd5}.mail-row.unread{color:#0f172a;background:#fff;font-weight:700}.mail-star{color:#cbd5e1;cursor:pointer;transition:color .15s}.mail-star.starred{color:var(--star-color)}.mail-sender{white-space:nowrap;text-overflow:ellipsis;width:170px;color:inherit;font-size:14px;overflow:hidden}.mail-snippet-block{white-space:nowrap;text-overflow:ellipsis;flex:1;align-items:center;gap:8px;font-size:14px;display:flex;overflow:hidden}.mail-subject{color:#0f172a;font-weight:600}.mail-snippet{color:#64748b;font-weight:400}.mail-meta-right{align-items:center;gap:12px;margin-left:auto;display:flex}.mail-date{color:#94a3b8;white-space:nowrap;font-size:12px;font-weight:500}.mail-row-arrow{color:#cbd5e1;font-size:14px;transition:transform .15s,color .15s}.mail-row:hover 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10px;font-size:11px;font-weight:800}.mail-viewer-page{background:#f8fafc;flex-direction:column;flex:1;animation:.2s ease-out fadeIn;display:flex;overflow:hidden}.viewer-page-nav{background:#fff;border-bottom:1.5px solid #fed7aa;justify-content:space-between;align-items:center;height:56px;padding:0 24px;display:flex;box-shadow:0 2px 8px #00000008}.btn-back-to-list{color:#c2410c;cursor:pointer;background:#fff7ed;border:1px solid #fed7aa;border-radius:10px;align-items:center;gap:8px;padding:8px 16px;font-size:13.5px;font-weight:700;transition:all .15s;display:inline-flex}.btn-back-to-list:hover{color:#fff;background:linear-gradient(135deg,#ff7a1a,#ea580c);border-color:#ea580c;transform:translate(-2px);box-shadow:0 4px 12px #ff6b0040}.viewer-actions-group{align-items:center;gap:10px;display:flex}.btn-viewer-action{color:#334155;cursor:pointer;background:#fff;border:1px solid #cbd5e1;border-radius:8px;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:600;transition:all 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#ff6b000d}.viewer-body-html{color:#1e293b;font-size:15px;line-height:1.8}.btn-viewer-primary{color:#fff;background:linear-gradient(135deg,#ff7a1a,#ea580c);border-color:#ea580c;box-shadow:0 2px 8px #ff6b0040}.btn-viewer-primary:hover{color:#fff;background:linear-gradient(135deg,#ea580c,#c2410c);border-color:#c2410c;box-shadow:0 4px 12px #ff6b0059}.viewer-bottom-actions{align-items:center;gap:12px;margin-top:8px;padding-bottom:24px;display:flex}.btn-bottom-reply{color:#fff;cursor:pointer;background:linear-gradient(135deg,#ff7a1a,#ea580c);border:1.5px solid #ea580c;border-radius:12px;align-items:center;gap:8px;padding:10px 22px;font-size:13.5px;font-weight:700;transition:all .15s;display:inline-flex;box-shadow:0 4px 14px #ff6b0040}.btn-bottom-reply:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ff6b0059}.btn-bottom-secondary{color:#0f172a;background:#fff;border-color:#fed7aa;box-shadow:0 2px 6px 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#ff6b002e}.btn-auth-submit{color:#fff;cursor:pointer;background:linear-gradient(135deg,#ff7a1a,#ea580c);border:none;border-radius:12px;width:100%;margin-top:6px;padding:13px;font-size:14px;font-weight:700;transition:all .2s;box-shadow:0 4px 18px #ff6b0059}.btn-auth-submit:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 24px #ff6b0080}.btn-auth-submit:disabled{opacity:.65;cursor:not-allowed}.auth-alert-error{color:#dc2626;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;margin-bottom:16px;padding:10px 14px;font-size:13px;font-weight:500}.auth-alert-success{color:#16a34a;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;margin-bottom:16px;padding:10px 14px;font-size:13px;font-weight:500}.demo-credentials-box{color:#9a3412;background:#fff7ed;border:1px dashed 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