:root{--pink: #ff7a9c;--pink-soft: #ffd6e0;--pink-bg: #fff5f7;--warm: #ffb088;--text: #4a3a44;--text-light: #8a7a82;--border: #f0dde2;--green: #6ec98a;--shadow: 0 4px 20px rgba(255, 122, 156, .12)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,sans-serif;background:linear-gradient(160deg,#fff5f7,#fff0e8);color:var(--text);min-height:100vh}.app{min-height:100vh}.container{max-width:560px;margin:0 auto;padding:24px 16px 60px}.loading{text-align:center;padding:60px;color:var(--text-light)}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.topbar .logo{font-weight:700;font-size:18px;color:var(--pink);text-decoration:none}.topbar .nav{display:flex;gap:18px}.topbar .nav a{color:var(--text-light);text-decoration:none;font-size:15px}.topbar .nav a.active{color:var(--pink);font-weight:600}.topbar .user-box{display:flex;align-items:center;gap:10px}.topbar .nickname{font-size:14px;color:var(--text)}button{cursor:pointer;border:none;border-radius:12px;font-family:inherit;font-size:15px;padding:10px 18px;transition:all .15s}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--pink),var(--warm));color:#fff;font-weight:600;box-shadow:var(--shadow);width:100%;padding:12px}.btn-primary:hover:not(:disabled){transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-light);padding:6px 12px}.btn-ghost:hover{background:var(--pink-bg)}.btn-accept{background:linear-gradient(135deg,#ff7a9c,#ffb088);color:#fff;font-weight:600;flex:1}.btn-reject{background:#f0e4e8;color:var(--text-light);flex:1}.auth-card{background:#fff;border-radius:24px;padding:36px 28px;margin-top:40px;box-shadow:var(--shadow);text-align:center}.auth-card h1{color:var(--pink);margin-bottom:8px}.subtitle{color:var(--text-light);margin-bottom:24px;font-size:14px}.auth-card form{display:flex;flex-direction:column;gap:12px;margin-top:20px}.auth-card input{padding:14px 16px;border:1.5px solid var(--border);border-radius:12px;font-size:15px;font-family:inherit;outline:none;transition:border .15s}.auth-card input:focus{border-color:var(--pink)}.switch{margin-top:20px;font-size:14px;color:var(--text-light)}.switch a{color:var(--pink);text-decoration:none}.card{background:#fff;border-radius:20px;padding:28px 24px;box-shadow:var(--shadow);text-align:center}.card.center{margin-top:30px}.card h2,.card h3{color:var(--text);margin-bottom:12px}.card .hint{color:var(--text-light);font-size:13px;margin-bottom:16px}.card form,.card>input,.card>button{margin-top:12px}.error{background:#ffeef0;color:#d6485e;padding:10px 14px;border-radius:10px;font-size:13px;margin:8px 0}.pairing h1{color:var(--pink);text-align:center;margin-bottom:6px}.pairing .subtitle{text-align:center}.pairing .card{margin-top:20px;text-align:left}.pairing .card h3{font-size:16px}.code-box{display:flex;align-items:center;justify-content:space-between;background:var(--pink-bg);border-radius:14px;padding:16px 18px;margin-top:12px}.code-box .code{font-size:32px;font-weight:800;letter-spacing:6px;color:var(--pink);font-family:SF Mono,monospace}.code-input{width:100%;text-align:center;font-size:24px;letter-spacing:6px;font-weight:700;padding:14px;border:2px dashed var(--pink);border-radius:14px;color:var(--pink);font-family:SF Mono,monospace;margin-top:12px;outline:none;background:var(--pink-bg)}.paired-heart{font-size:56px}.tabs{display:flex;gap:8px;background:#fff;padding:6px;border-radius:14px;margin-bottom:18px;box-shadow:var(--shadow)}.tabs button{flex:1;background:transparent;color:var(--text-light);padding:10px;font-size:14px}.tabs button.active{background:linear-gradient(135deg,var(--pink),var(--warm));color:#fff;font-weight:600}.inv-list{display:flex;flex-direction:column;gap:14px}.inv-card{background:#fff;border-radius:18px;padding:18px;box-shadow:var(--shadow);border-left:4px solid var(--pink)}.inv-card.status-accepted{border-left-color:var(--green)}.inv-card.status-rejected{border-left-color:#c0a0a8;opacity:.75}.inv-card.status-cancelled{border-left-color:#c0a0a8;opacity:.65}.inv-head{display:flex;align-items:center;gap:12px}.inv-emoji{font-size:28px}.inv-title-wrap{flex:1}.inv-title{font-weight:600;font-size:16px}.inv-meta{font-size:12px;color:var(--text-light);margin-top:2px}.status-badge{font-size:11px;padding:4px 10px;border-radius:20px;font-weight:600}.status-badge.pending{background:#fff0d6;color:#d68a30}.status-badge.accepted{background:#e0f5e6;color:#3d9c5a}.status-badge.rejected{background:#f0e4e8;color:#9a7080}.status-badge.cancelled{background:#eee;color:#999}.inv-body{margin-top:12px;padding-top:12px;border-top:1px dashed var(--border);font-size:14px;color:var(--text);display:flex;flex-direction:column;gap:6px}.inv-note{color:var(--text-light);font-style:italic}.inv-actions{display:flex;gap:10px;margin-top:14px}.empty{text-align:center;padding:50px 20px;color:var(--text-light)}.empty-emoji{font-size:48px;margin-bottom:12px}.empty .btn-primary{display:inline-block;width:auto;margin-top:16px;padding:10px 24px;text-decoration:none}.new-inv h1{color:var(--pink);text-align:center;margin-bottom:24px}.form{background:#fff;border-radius:20px;padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px}.form label{font-size:13px;color:var(--text-light);margin-top:12px;margin-bottom:4px}.form label:first-child{margin-top:0}.form input,.form textarea{padding:12px 14px;border:1.5px solid var(--border);border-radius:12px;font-size:15px;font-family:inherit;outline:none;resize:vertical}.form input:focus,.form textarea:focus{border-color:var(--pink)}.type-picker{display:flex;flex-wrap:wrap;gap:8px}.type-chip{background:var(--pink-bg);color:var(--text);padding:8px 14px;border-radius:20px;font-size:14px}.type-chip.active{background:linear-gradient(135deg,var(--pink),var(--warm));color:#fff;font-weight:600}.form .btn-primary{margin-top:20px}