:root{--bg-black: #000000;--panel-card: #0a0a0a;--panel-card-hover: #121212;--border-color: #222222;--border-hover: #444444;--primary: #2563eb;--primary-hover: #1d4ed8;--accent: #3b82f6;--accent-hover: #2563eb;--success: #10b981;--danger: #ef4444;--text-main: #ffffff;--text-muted: #888888;--text-dim: #555555;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-black);color:var(--text-main);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{max-width:1100px;margin:0 auto;padding:24px 20px 60px;display:flex;flex-direction:column;gap:20px}.navbar{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:var(--panel-card);border:1px solid var(--border-color);border-radius:var(--radius-lg)}.brand{display:flex;align-items:center;gap:10px}.brand-icon{width:34px;height:34px;background:linear-gradient(135deg,#fbbf24,#d97706);color:#000;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800}.brand-title{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.4px}.brand-tag{font-size:12px;font-weight:600;background:#181818;color:#aaa;padding:3px 10px;border-radius:20px;margin-left:6px;border:1px solid var(--border-color)}.status-badge{display:flex;align-items:center;gap:8px;background:#10b9811a;border:1px solid rgba(16,185,129,.25);padding:6px 14px;border-radius:30px;font-size:12px;color:var(--success);font-weight:600}.status-dot{width:7px;height:7px;background-color:var(--success);border-radius:50%}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;font-family:var(--font-body);font-size:13px;font-weight:600;border-radius:var(--radius-sm);border:none;cursor:pointer;transition:all .15s ease}.btn-primary{background:#fff;color:#000}.btn-primary:hover{background:#e5e5e5}.btn-accent{background:var(--primary);color:#fff}.btn-accent:hover{background:var(--primary-hover)}.btn-secondary{background:#141414;color:var(--text-main);border:1px solid var(--border-color)}.btn-secondary:hover{background:#1f1f1f;border-color:var(--border-hover)}.btn-danger-outline{background:transparent;color:#f87171;border:1px solid rgba(239,68,68,.3)}.btn-danger-outline:hover{background:#ef44441a}.hero-card{background:var(--panel-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px 28px;display:flex;flex-direction:column;gap:20px}.hero-header{display:flex;justify-content:space-between;align-items:center}.hero-header-title h1{font-size:20px;font-weight:700;letter-spacing:-.4px;color:#fff;margin-bottom:4px}.hero-header-title p{font-size:13px;color:var(--text-muted)}.duration-picker{display:flex;align-items:center;gap:6px;background:#121212;padding:4px;border-radius:8px;border:1px solid var(--border-color)}.duration-label{font-size:11px;font-weight:600;color:var(--text-muted);padding:0 6px;text-transform:uppercase}.duration-btn{background:transparent;border:none;color:var(--text-muted);padding:5px 10px;font-size:12px;font-weight:600;border-radius:4px;cursor:pointer;transition:all .15s ease}.duration-btn:hover{color:#fff}.duration-btn.active{background:#262626;color:#fff;border:1px solid #333333}.email-box-wrapper{display:flex;gap:12px;align-items:center}.email-input-container{flex:1;position:relative;display:flex;align-items:center}.mail-icon{position:absolute;left:16px;color:#888;font-size:18px}.email-input-container input{width:100%;padding:14px 16px 14px 48px;font-family:monospace,var(--font-body);font-size:18px;font-weight:700;color:#fff;background:#000;border:1px solid var(--border-color);border-radius:var(--radius-md);letter-spacing:.5px}.action-buttons-group{display:flex;gap:8px}.hero-footer{display:flex;justify-content:space-between;align-items:center;padding-top:14px;border-top:1px solid #1a1a1a;font-size:12px;color:var(--text-muted)}.timer-info{display:flex;align-items:center;gap:10px}.progress-bar-container{width:60px;height:4px;background:#222;border-radius:2px;overflow:hidden}.progress-bar-fill{width:100%;height:100%;background:var(--primary);transition:width 1s linear}.ttl-info{display:flex;align-items:center;gap:6px}.toolbar{display:flex;justify-content:space-between;align-items:center}.inbox-title{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px}.badge-count{font-size:12px;font-weight:700;background:#262626;color:#fff;padding:2px 8px;border-radius:10px;border:1px solid #333}.toolbar-right{display:flex;gap:8px}.inbox-grid{display:grid;grid-template-columns:340px 1fr;gap:16px;min-height:420px}.inbox-sidebar{background:var(--panel-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:12px;display:flex;flex-direction:column}.email-list{display:flex;flex-direction:column;gap:6px;overflow-y:auto;max-height:460px}.loading-state-left{display:flex;align-items:center;gap:10px;padding:16px 14px;color:var(--text-muted);font-size:13px;font-weight:500}.loading-state-left i{color:var(--primary);font-size:16px}.email-item{padding:12px 14px;border-radius:var(--radius-sm);background:#111;border:1px solid var(--border-color);cursor:pointer;transition:all .15s ease;display:flex;flex-direction:column;gap:4px}.email-item:hover{border-color:var(--border-hover);background:#161616}.email-item.active{background:#1c1c1c;border-color:var(--primary)}.email-item-header{display:flex;justify-content:space-between;align-items:center}.sender-name{font-weight:600;font-size:13px;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.email-time{font-size:11px;color:var(--text-dim)}.email-subject{font-size:12px;font-weight:500;color:#ccc;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.email-snippet{font-size:11px;color:var(--text-dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.email-reader{background:var(--panel-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;display:flex;flex-direction:column;position:relative}.reader-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;min-height:340px;text-align:center;gap:12px;color:var(--text-muted)}.empty-icon-wrapper{width:60px;height:60px;border-radius:50%;background:#141414;border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--text-dim)}.highlight-email{color:#fff;font-weight:600;font-family:monospace}.empty-hint{font-size:12px;color:var(--text-dim);display:flex;align-items:center;gap:6px}.reader-header{display:flex;justify-content:space-between;align-items:flex-start;padding-bottom:16px;border-bottom:1px solid var(--border-color);margin-bottom:16px}.subject-line{font-size:18px;font-weight:700;margin-bottom:6px}.sender-details{font-size:12px;color:var(--text-muted)}.sender-address{color:#38bdf8}.reader-actions{display:flex;gap:8px}.view-tabs{display:flex;gap:6px;margin-bottom:14px}.tab-btn{padding:6px 12px;font-size:12px;font-weight:600;border-radius:4px;background:#141414;border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer}.tab-btn.active{background:#fff;color:#000;border-color:#fff}.email-body-box{background:#fff;color:#000;padding:20px;border-radius:var(--radius-md);min-height:280px;overflow-y:auto}.email-body-box iframe{width:100%;height:320px;border:none}.info-section{margin-top:20px;padding-top:24px;border-top:1px solid var(--border-color)}.info-heading{font-size:18px;font-weight:700;margin-bottom:18px;text-align:center}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.feature-card{background:var(--panel-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:18px;display:flex;flex-direction:column;gap:8px}.feature-icon{width:32px;height:32px;border-radius:var(--radius-sm);background:#1a1a1a;color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px}.feature-card h3{font-size:14px;font-weight:700}.feature-card p{font-size:12px;color:var(--text-muted);line-height:1.6}.feature-card code{color:#38bdf8;font-family:monospace}.footer{text-align:center;padding-top:20px;font-size:12px;color:var(--text-dim);border-top:1px solid var(--border-color)}.modal-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000000d9;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}.modal-overlay.hidden{display:none}.modal-card{background:#0d0d0d;border:1px solid var(--border-color);border-radius:var(--radius-lg);width:100%;max-width:440px;padding:24px;display:flex;flex-direction:column;gap:16px}.modal-card.modal-lg{max-width:560px}.modal-header{display:flex;justify-content:space-between;align-items:center}.modal-header h3{font-size:16px;font-weight:700}.close-btn{background:transparent;border:none;color:var(--text-muted);font-size:16px;cursor:pointer}.close-btn:hover{color:#fff}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.form-group label,.modal-body label{font-size:12px;font-weight:600;color:var(--text-muted)}.modal-body input,.modal-body textarea{width:100%;padding:10px 12px;background:#000;border:1px solid var(--border-color);border-radius:var(--radius-sm);color:#fff;font-family:var(--font-body);font-size:13px}.input-with-suffix{display:flex;align-items:center}.input-with-suffix input{border-top-right-radius:0;border-bottom-right-radius:0}.suffix-domain{background:#181818;padding:10px 12px;border:1px solid var(--border-color);border-left:none;border-top-right-radius:var(--radius-sm);border-bottom-right-radius:var(--radius-sm);font-size:13px;color:var(--text-muted)}.input-help{font-size:11px;color:var(--text-dim);margin-top:4px}.modal-footer{display:flex;justify-content:flex-end;gap:8px}.toast-container{position:fixed;bottom:24px;right:24px;z-index:200;display:flex;flex-direction:column;gap:8px}.toast{background:#181818;color:#fff;padding:10px 16px;border-radius:var(--radius-sm);border-left:3px solid var(--primary);font-size:13px;display:flex;align-items:center;gap:8px}.toast.success{border-left-color:var(--success)}.toast.error{border-left-color:var(--danger)}.hidden{display:none!important}@media (max-width: 820px){.inbox-grid{grid-template-columns:1fr}.email-box-wrapper{flex-direction:column}.action-buttons-group{width:100%}.action-buttons-group .btn{flex:1}}