*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f7f7f5;--surface: #ffffff;--border: #e4e4e0;--border-md: #d0d0ca;--text: #1a1a18;--text-2: #6b6b65;--text-3: #9b9b93;--accent: #2563eb;--accent-bg: #eff4ff;--accent-fg: #1d4ed8;--ok: #16a34a;--ok-bg: #f0fdf4;--err: #dc2626;--err-bg: #fef2f2;--warn: #d97706;--warn-bg: #fffbeb;--radius: 6px;--radius-lg: 10px;--font: "Inter", system-ui, -apple-system, sans-serif;--mono: "JetBrains Mono", "Fira Mono", monospace;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04)}html,body,#root{height:100%;font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}.auth-screen{display:flex;align-items:center;justify-content:center;height:100%;padding:2rem}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:3rem 2.5rem;max-width:380px;width:100%;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}.auth-icon{font-size:2.5rem;line-height:1;margin-bottom:.25rem}.auth-title{font-size:1.375rem;font-weight:600;letter-spacing:-.02em;color:var(--text)}.auth-sub{color:var(--text-2);font-size:14px;line-height:1.6;max-width:28ch}.auth-cta{width:100%;justify-content:center;margin-top:.5rem}.layout{display:grid;grid-template-columns:260px 1fr;height:100vh;max-height:100vh;overflow:hidden}.sidebar{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between;padding:1.25rem;gap:1rem;overflow-y:auto}.sidebar-top,.sidebar-bottom{display:flex;flex-direction:column;gap:.875rem}.sidebar-heading{font-size:13px;font-weight:600;color:var(--text);letter-spacing:-.01em}.chip-box{border:1px solid var(--border-md);border-radius:var(--radius);padding:6px 8px;min-height:80px;max-height:160px;overflow-y:auto;display:flex;flex-wrap:wrap;gap:4px;align-content:flex-start;cursor:text;background:var(--bg);transition:border-color .15s}.chip-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-bg)}.chip{display:inline-flex;align-items:center;gap:3px;background:var(--accent-bg);border:1px solid #c7d9ff;color:var(--accent-fg);border-radius:999px;padding:1px 6px 1px 9px;font-size:12px;max-width:190px;white-space:nowrap}.chip-label{overflow:hidden;text-overflow:ellipsis}.chip-remove{background:none;border:none;cursor:pointer;color:var(--accent-fg);font-size:15px;line-height:1;padding:0;opacity:.6;flex-shrink:0}.chip-remove:hover{opacity:1}.chip-input{border:none;outline:none;background:transparent;font-size:13px;color:var(--text);font-family:var(--font);flex:1;min-width:120px}.recipient-count{font-size:12px;color:var(--text-3);text-align:right}.import-row{display:flex;gap:6px}.import-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:5px;padding:6px 10px;border:1px dashed var(--border-md);border-radius:var(--radius);background:var(--bg);color:var(--text-2);font-size:12px;font-family:var(--font);cursor:pointer;transition:background .12s,border-color .12s,color .12s}.import-btn:hover{background:var(--accent-bg);border-color:var(--accent);color:var(--accent-fg)}.import-icon{font-size:13px}.csv-columns{display:flex;flex-wrap:wrap;gap:4px;align-items:center}.csv-col-label{font-size:11px;color:var(--text-3)}.col-tag{font-family:var(--mono);font-size:11px;background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 6px;color:var(--text-2)}.field-label{font-size:12px;color:var(--text-2);margin-bottom:4px}.attach-zone{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px dashed var(--border-md);border-radius:var(--radius);cursor:pointer;font-size:13px;color:var(--text-2);background:var(--bg);transition:background .12s}.attach-zone:hover{background:var(--accent-bg);border-color:var(--accent);color:var(--accent-fg)}.attach-icon{font-size:16px}.clear-attach{margin-top:4px;background:none;border:none;font-size:12px;color:var(--err);cursor:pointer;font-family:var(--font);padding:0}.clear-attach:hover{text-decoration:underline}.btn-clear{width:100%;justify-content:center;color:var(--text-2);font-size:13px}.compose{display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--surface)}.compose-header{padding:1rem 1.25rem;border-bottom:1px solid var(--border)}.subject-input{width:100%;border:none;outline:none;font-size:16px;font-weight:500;font-family:var(--font);color:var(--text);background:transparent;letter-spacing:-.01em}.subject-input::placeholder{color:var(--text-3);font-weight:400}.merge-bar{display:flex;align-items:flex-start;gap:8px;padding:.625rem 1.25rem;border-bottom:1px solid var(--border);flex-wrap:wrap;background:var(--bg)}.merge-label{font-size:12px;color:var(--text-3);white-space:nowrap;padding-top:2px}.merge-tags{display:flex;flex-wrap:wrap;gap:4px}.merge-tag{font-family:var(--mono);font-size:11px;background:var(--surface);border:1px solid var(--border-md);border-radius:4px;padding:2px 7px;cursor:pointer;color:var(--accent-fg);transition:background .1s}.merge-tag:hover{background:var(--accent-bg);border-color:var(--accent)}.body-wrap{flex:1;overflow:hidden;padding:1rem 1.25rem;display:flex}.body-input{width:100%;height:100%;border:none;outline:none;resize:none;font-size:14px;font-family:var(--font);line-height:1.75;color:var(--text);background:transparent}.body-input::placeholder{color:var(--text-3)}.progress-track{height:2px;background:var(--border)}.progress-fill{height:100%;background:var(--accent);transition:width .25s ease}.log-box{max-height:110px;overflow-y:auto;border-top:1px solid var(--border);padding:.5rem 1.25rem;display:flex;flex-direction:column;gap:2px;background:var(--bg)}.log-line{display:flex;align-items:center;gap:8px;font-size:12px;font-family:var(--mono);color:var(--text-2)}.log-ok{color:var(--ok)}.log-err{color:var(--err)}.log-icon{flex-shrink:0}.compose-footer{padding:.875rem 1.25rem;border-top:1px solid var(--border);display:flex;align-items:center;gap:.75rem;background:var(--surface)}.status-msg{font-size:13px;color:var(--text-3);flex:1}.status-ok{color:var(--ok)}.status-err{color:var(--err)}.status-sending{color:var(--accent)}.footer-actions{display:flex;gap:.5rem}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius);font-size:13px;font-weight:500;font-family:var(--font);cursor:pointer;border:1px solid var(--border-md);background:var(--surface);color:var(--text);transition:background .12s,border-color .12s;white-space:nowrap}.btn:hover{background:var(--bg)}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--accent);color:#fff;border-color:transparent}.btn-primary:hover{background:var(--accent-fg)}.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}.btn-ghost:hover{background:var(--bg);color:var(--text);border-color:var(--border)}.spinner{width:28px;height:28px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-md);border-radius:99px}.user-badge{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:4px}.user-avatar{width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0}.user-info{flex:1;overflow:hidden}.user-name{font-size:13px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-email{font-size:11px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.logout-btn{background:none;border:none;cursor:pointer;color:var(--text-3);font-size:16px;padding:2px 4px;border-radius:4px;flex-shrink:0}.logout-btn:hover{color:var(--err);background:var(--err-bg)}