:root{--bg: #f5f6fb;--sidebar-bg: #e8eaf3;--panel: #ffffff;--border: #e4e6f0;--text: #171923;--muted: #6b7280;--accent: #4f46e5;--accent-hover: #4338ca;--danger: #dc2626;--danger-soft: #fdecec;--success: #16a34a;--warning: #b45309;--unseen-bg: #eef0fd;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow-md: 0 8px 24px rgba(15, 23, 42, .08)}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}button{cursor:pointer;border:1px solid var(--border);background:var(--panel);color:var(--text);padding:6px 12px;border-radius:var(--radius-sm);font-size:14px;transition:background .12s ease,border-color .12s 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var(--unseen-bg)}label{display:flex;flex-direction:column;gap:4px;margin-bottom:12px;font-size:13px;color:var(--muted)}.error{color:var(--danger);font-size:13px}.success{color:#16a34a;font-size:13px}.center-screen{display:flex;align-items:center;justify-content:center;height:100vh}.login-screen{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(160deg,#eef0fd 0%,var(--bg) 55%)}.login-card{background:var(--sidebar-bg);padding:40px 48px;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:440px;border:1px solid var(--border)}.login-logo{display:block;height:100px;margin:0 auto 20px}.login-card h1{margin:0 0 4px;font-size:22px;text-align:center}.login-subtitle{margin:0 0 24px;font-size:13px;color:var(--muted);text-align:center}.login-card button[type=submit]{width:100%;background:var(--accent);color:#fff;border:none;padding:11px;font-weight:600}.login-card button[type=submit]:hover{background:var(--accent-hover)}.mailbox-layout{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:64px;flex-wrap:wrap;row-gap:8px;padding:10px 16px;background:var(--bg);border-bottom:1px solid var(--border)}.topbar>.brand{flex-shrink:0}.topbar>.topbar-actions{margin-left:auto}.topbar h1{font-size:18px;margin:0}.brand{display:flex;align-items:center;gap:10px}.company-logo{height:48px;max-width:240px;width:auto;object-fit:contain}.tabs-and-compose{display:flex;align-items:center;flex-wrap:wrap;gap:300px}.app-tabs{display:flex;flex-wrap:wrap;gap:4px}.compose-button{white-space:nowrap;padding:12px 22px;border-radius:22px;font-size:15px;font-weight:600;box-shadow:var(--shadow-md);transition:box-shadow .15s ease,transform .05s ease}.compose-button:hover{box-shadow:0 10px 28px #0f172a29}.compose-button:active{transform:translateY(1px)}.app-tabs button{border:none;background:transparent;padding:8px 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var(--border);padding-top:16px}.text-body{white-space:pre-wrap;font-family:inherit;font-size:14px;line-height:1.5}.html-body-frame{width:100%;min-height:400px;border:none}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--panel);border-radius:10px;padding:20px;width:480px;max-height:90vh;overflow-y:auto}.modal.sieve-modal{width:640px}.recipient-input-wrap{position:relative}.recipient-suggestions{position:absolute;z-index:20;top:100%;left:0;right:0;margin:2px 0 0;padding:4px;list-style:none;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);max-height:220px;overflow-y:auto}.recipient-suggestions li{display:flex;align-items:center;gap:4px}.recipient-suggestion-pick{flex:1;text-align:left;border:none;background:transparent;padding:6px 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var(--border);border-radius:var(--radius-sm);background:var(--panel);margin-bottom:6px}.task-priority-high{border-left-color:var(--danger)}.task-priority-normal{border-left-color:var(--accent)}.task-priority-low{border-left-color:var(--success)}.task-priority-label{font-weight:600}.task-priority-high .task-priority-label{color:var(--danger)}.task-priority-normal .task-priority-label{color:var(--accent)}.task-priority-low .task-priority-label{color:var(--success)}.task-actions{display:flex;flex-direction:column;gap:4px;align-items:flex-end}.task-actions .cell-actions{display:flex;gap:4px}.task-item.task-done{opacity:.6}.task-item.task-done .task-title{text-decoration:line-through}.task-checkbox{padding-top:2px}.task-body{flex:1;min-width:0}.task-title{font-weight:600}.task-meta{font-size:12px}.task-section-header{color:var(--muted);font-size:14px;margin:8px 0}.mobile-only{display:none}@media (max-width: 860px){html{-webkit-text-size-adjust:100%}.topbar{gap:10px;padding:10px 12px}.tabs-and-compose{gap:10px;width:100%;justify-content:space-between}.topbar>.topbar-actions{margin-left:0;width:100%;flex-wrap:wrap}.search-box{flex:1;min-width:0;width:auto}.layout-toggle{display:none}.app-tabs{overflow-x:auto;flex-wrap:nowrap}.app-tabs button{flex-shrink:0}.mobile-only{display:flex}.desktop-only{display:none!important}.mobile-pane-header{align-items:center;gap:6px;padding:10px 12px;border-bottom:1px solid var(--border);background:var(--panel);flex-shrink:0;font-weight:600}.mobile-back-button{border:none;background:transparent;color:var(--accent);font-size:16px;font-weight:400;padding:6px 4px 6px 0;white-space:nowrap}.mobile-compose-fab{position:fixed;right:18px;bottom:24px;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#fff;font-size:22px;display:flex;align-items:center;justify-content:center;border:none;box-shadow:var(--shadow-md);z-index:20}.mailbox-body .pane-divider{display:none!important}.mailbox-body{grid-template-columns:1fr!important;grid-template-rows:1fr!important;overflow:visible}.mail-panes{grid-template-columns:1fr!important;grid-template-rows:1fr!important}.mobile-view-folders .mail-panes,.mobile-view-list .sidebar,.mobile-view-reading .sidebar,.mobile-view-list .reading-pane-pane,.mobile-view-reading .message-list-pane{display:none}.sidebar{border-right:none;height:100%}.folder-item{padding:12px 10px;font-size:15px}.message-row{padding:12px 10px}.message-list-toolbar,.bulk-actions{flex-wrap:wrap}.reading-pane{padding:14px 14px 76px}.reading-toolbar{position:fixed;left:0;right:0;bottom:0;margin-bottom:0;padding:6px 4px;border-bottom:none;border-top:1px solid var(--border);background:var(--panel);justify-content:space-around;flex-wrap:nowrap;overflow-x:auto;z-index:15}.ribbon-button{min-width:48px;padding:6px 4px}.ribbon-label{font-size:9px}.modal-backdrop{padding:0}.modal,.modal.sieve-modal{width:100vw;height:100vh;max-height:100vh;border-radius:0}.tab-page{padding:16px 14px}}