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18px;border-radius:10px;background:#f8fafc;border:1px solid #e2e8f0}.tier-pill.tier-free{border-left:4px solid #94a3b8}.tier-pill.tier-premium{border-left:4px solid #f59e0b}.tier-pill.tier-pro{border-left:4px solid #6366f1}.tier-name{font-size:13px;font-weight:600;text-transform:capitalize;color:#334155}.tier-count{font-size:20px;font-weight:700;color:#0f172a}.no-data-text{color:#94a3b8;font-size:13px}:root{--app-gradient-start: #667eea;--app-gradient-end: #764ba2}.App{min-height:100vh;background:linear-gradient(135deg,var(--app-gradient-start) 0%,var(--app-gradient-end) 100%);padding:20px 0}.app-container{max-width:1200px;margin:0 auto;background:#fff;border-radius:12px;box-shadow:0 10px 30px #0000001a;overflow:hidden;min-height:90vh}.app-header{display:flex;justify-content:space-between;align-items:center;padding:20px 30px;background:linear-gradient(135deg,var(--app-gradient-start) 0%,var(--app-gradient-end) 100%);color:#fff}.app-header h1{margin:0;font-size:24px;font-weight:600}.user-info{display:flex;align-items:center;gap:15px}.user-info span{font-size:14px;opacity:.9}.sign-out-btn{background:#fff3;border:1px solid rgba(255,255,255,.3);color:#fff;padding:8px 16px;border-radius:6px;cursor:pointer;font-size:14px;transition:all .3s ease}.sign-out-btn:hover{background:#ffffff4d;border-color:#ffffff80}.app-navigation{display:flex;background:#f8f9fa;border-bottom:1px solid #e9ecef}.nav-btn{flex:1;background:none;border:none;padding:16px 24px;font-size:16px;font-weight:500;color:#6c757d;cursor:pointer;transition:all .3s ease;border-bottom:3px solid transparent}.nav-btn:hover{background:#e9ecef;color:#495057}.nav-btn.active{color:var(--app-gradient-start);background:#fff;border-bottom-color:var(--app-gradient-start)}.nav-btn-admin{color:#4f46e5!important;font-weight:600!important}.nav-btn-admin:hover{background:#ede9fe!important;color:#3730a3!important}.nav-btn-admin.active{color:#4f46e5!important;border-bottom-color:#4f46e5!important}.app-content{padding:30px;min-height:600px}.loading-container{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:400px;color:#6c757d}.loading-container h2{margin:20px 0 10px;font-size:24px;font-weight:600;color:var(--app-gradient-start)}.loading-container p{font-size:16px;opacity:.8}