:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg:#f0f4f8;--card:#fff;--text:#0f172a;--muted:#64748b;--border:#e2e8f0;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--radius:10px;--radius-lg:16px;--shadow:0 1px 4px rgba(0,0,0,.07),0 4px 16px rgba(0,0,0,.05);--shadow-lg:0 8px 32px rgba(37,99,235,.1);--font-display:"Syne",sans-serif;--font-body:"DM Sans",sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.55rem 1.1rem;border-radius:var(--radius);border:1.5px solid transparent;font-family:var(--font-body);font-weight:500;font-size:.9rem;cursor:pointer;transition:background .15s,border-color .15s,transform .1s,box-shadow .15s;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover);box-shadow:0 4px 12px #2563eb40}.btn-ghost{background:transparent;color:var(--muted);border-color:var(--border)}.btn-ghost:hover:not(:disabled){background:#f1f5f9;color:var(--text)}.btn-danger{background:#fef2f2;color:var(--danger);border-color:#fecaca}.btn-danger:hover:not(:disabled){background:var(--danger);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#059669}.btn-block{width:100%}.btn-lg{padding:.75rem 1.75rem;font-size:1rem;border-radius:var(--radius-lg)}.btn-sm{padding:.3rem .7rem;font-size:.82rem}.form-group{margin-bottom:1rem}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}label{display:block;margin-bottom:.35rem;font-size:.85rem;font-weight:500;color:var(--muted)}input,select,textarea{width:100%;padding:.6rem .85rem;border:1.5px solid var(--border);border-radius:var(--radius);font-family:var(--font-body);font-size:.95rem;color:var(--text);background:#fff;transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}textarea{resize:vertical;min-height:80px}.card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:1.5rem;border:1px solid var(--border)}.badge{display:inline-block;padding:.2rem .6rem;border-radius:6px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-owner{background:#fef3c7;color:#92400e}.badge-member{background:#eff6ff;color:var(--primary)}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.logo{font-family:var(--font-display);font-size:1.3rem;font-weight:800;color:var(--primary)}.toast-root{position:fixed;bottom:1.5rem;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.5rem;pointer-events:none}.toast{padding:.75rem 1.1rem;border-radius:var(--radius);background:var(--card);box-shadow:0 4px 16px #00000026;border-left:4px solid var(--primary);min-width:240px;font-size:.9rem;animation:toastIn .2s ease;pointer-events:auto}.toast.success{border-left-color:var(--success)}.toast.error{border-left-color:var(--danger)}.toast.warning{border-left-color:var(--warning)}@keyframes toastIn{0%{transform:translate(110%);opacity:0}to{transform:none;opacity:1}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem;animation:fadeIn .15s ease}.modal-box{background:var(--card);border-radius:var(--radius-lg);padding:1.75rem;width:100%;max-width:500px;box-shadow:0 20px 60px #0003;max-height:90vh;overflow-y:auto;animation:slideUp .2s ease}.modal-box h2{font-family:var(--font-display);margin-bottom:1rem;font-size:1.3rem}.modal-actions{display:flex;gap:.5rem;justify-content:flex-end;margin-top:1.25rem}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:none;opacity:1}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;background:linear-gradient(135deg,#eff6ff,#f0f4f8 60%,#fefce8)}.auth-card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:2.5rem 2rem;width:100%;max-width:420px}.auth-card h2{font-family:var(--font-display);font-size:1.6rem;font-weight:800;text-align:center;margin-bottom:.35rem}.auth-subtitle{text-align:center;color:var(--muted);font-size:.9rem;margin-bottom:1.75rem}.auth-footer{text-align:center;margin-top:1.25rem;font-size:.88rem;color:var(--muted)}.auth-footer a{color:var(--primary);font-weight:500}.auth-form-logo{font-family:var(--font-display);font-size:1.2rem;font-weight:800;color:var(--primary);text-align:center;display:block;margin-bottom:1.5rem}.alert{padding:.75rem 1rem;border-radius:var(--radius);font-size:.9rem;margin-bottom:1rem}.alert-error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}.alert-success{background:#f0fdf4;color:var(--success);border:1px solid #bbf7d0}.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.spinner{width:2rem;height:2rem;border:2.5px solid #e2e8f0;border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:2rem auto}@keyframes spin{to{transform:rotate(360deg)}}.hidden{display:none!important}.text-muted{color:var(--muted)}.text-center{text-align:center}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.dashboard-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--card);border-right:1px solid var(--border);padding:1.5rem 1rem;display:flex;flex-direction:column;position:fixed;height:100vh;z-index:10;overflow-y:auto}.sidebar-logo{font-family:var(--font-display);font-size:1.2rem;font-weight:800;color:var(--primary);margin-bottom:2rem;padding:0 .5rem;cursor:pointer;display:block}.sidebar-nav{flex:1}.nav-item{display:flex;align-items:center;gap:.6rem;padding:.65rem .75rem;border-radius:var(--radius);font-size:.9rem;font-weight:500;color:var(--muted);cursor:pointer;transition:background .15s,color .15s;margin-bottom:.25rem;border:none;background:none;width:100%;text-align:left;font-family:var(--font-body)}.nav-item:hover{background:#eff6ff;color:var(--primary)}.nav-item.active{background:#eff6ff;color:var(--primary);font-weight:600}.sidebar-user{margin-top:auto;padding:.75rem;background:var(--bg);border-radius:var(--radius);display:flex;align-items:center;gap:.6rem}.user-avatar{width:36px;height:36px;background:var(--primary);border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0}.user-name{font-size:.85rem;font-weight:600}.user-login{font-size:.75rem;color:var(--muted)}.main-area{margin-left:240px;flex:1;padding:2rem;min-height:100vh}.page-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1.75rem;flex-wrap:wrap;gap:.75rem}.page-title{font-family:var(--font-display);font-size:1.75rem;font-weight:800}.page-sub{color:var(--muted);font-size:.9rem;margin-top:.15rem}.trips-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.25rem}.trip-card{cursor:pointer;transition:transform .15s,box-shadow .15s}.trip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.trip-card-title{font-family:var(--font-display);font-size:1.05rem;font-weight:700;margin-bottom:.35rem}.trip-card-dates{font-size:.82rem;color:var(--muted);margin-bottom:.5rem}.trip-card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:.75rem}.tab-bar{display:flex;gap:.25rem;border-bottom:1.5px solid var(--border);margin-bottom:1.5rem}.tab-btn{padding:.65rem 1rem;background:none;border:none;border-bottom:2.5px solid transparent;font-family:var(--font-body);font-size:.9rem;font-weight:500;color:var(--muted);cursor:pointer;transition:color .15s,border-color .15s;margin-bottom:-1.5px}.tab-btn:hover{color:var(--text)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.item-card{border:1.5px solid var(--border);border-radius:var(--radius);padding:1rem;margin-bottom:.75rem;background:var(--card);transition:box-shadow .15s}.item-card:hover{box-shadow:0 2px 8px #0000000f}.item-header{display:flex;justify-content:space-between;align-items:flex-start;gap:.5rem;margin-bottom:.4rem}.item-title{font-weight:600;font-size:.95rem}.item-meta{display:flex;flex-wrap:wrap;gap:.5rem;font-size:.82rem;color:var(--muted)}.item-actions{display:flex;gap:.25rem;flex-shrink:0}.poll-voted{border-left:3px solid var(--success)}.poll-bar{height:6px;border-radius:3px;background:#e2e8f0;margin:.75rem 0 .5rem;overflow:hidden}.poll-bar-fill{height:100%;background:var(--primary);border-radius:3px;transition:width .4s}.invite-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem;background:linear-gradient(135deg,#eff6ff,#f0f4f8)}.invite-card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:2.5rem 2rem;max-width:460px;width:100%;text-align:center}.invite-icon{font-size:3.5rem;display:block;margin-bottom:1rem}.invite-title{font-family:var(--font-display);font-size:1.5rem;font-weight:800;margin-bottom:.5rem}.invite-sub{color:var(--muted);margin-bottom:1.5rem;font-size:.95rem}.invite-trip-box{background:var(--bg);border-radius:var(--radius);padding:1rem 1.25rem;text-align:left;margin-bottom:1.5rem}.invite-trip-name{font-family:var(--font-display);font-size:1.1rem;font-weight:700;margin-bottom:.5rem}.invite-trip-meta{font-size:.85rem;color:var(--muted);display:flex;flex-direction:column;gap:.3rem}.invite-btn-group{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}.home-hero{min-height:100vh;display:flex;flex-direction:column}.home-hero-body{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem}.home-title{font-family:var(--font-display);font-size:clamp(3rem,8vw,5.5rem);font-weight:800;color:var(--primary);letter-spacing:-.03em;margin-bottom:1rem}.home-sub{font-size:1.15rem;color:var(--muted);max-width:560px;margin-bottom:2rem;line-height:1.6}.home-actions{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.empty-state{text-align:center;padding:3rem 1rem;color:var(--muted)}.empty-icon{font-size:2.5rem;margin-bottom:.75rem;display:block}.members-wrap{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.member-chip{display:flex;align-items:center;gap:.4rem;padding:.3rem .75rem;border-radius:999px;font-size:.82rem;font-weight:500;background:#eff6ff;color:var(--primary)}.member-chip.owner{background:#fef3c7;color:#92400e}.invite-link-row{display:flex;gap:.5rem}.invite-link-input{flex:1;font-family:monospace;font-size:.82rem;padding:.5rem .75rem;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg)}@media (max-width:768px){.sidebar{display:none}.main-area{margin-left:0;padding:1rem}.form-row,.trips-grid{grid-template-columns:1fr}.tab-bar{overflow-x:auto}}[data-theme=dark]{--primary: #60a5fa;--primary-hover: #3b82f6;--bg: #0f172a;--card: #1e293b;--text: #f1f5f9;--muted: #94a3b8;--border: #334155;--danger: #f87171;--success: #34d399;--warning: #fbbf24}[data-theme=dark] input,[data-theme=dark] select,[data-theme=dark] textarea{background:#1e293b;color:#f1f5f9;border-color:#334155}[data-theme=dark] input:focus,[data-theme=dark] select:focus,[data-theme=dark] textarea:focus{border-color:var(--primary)}[data-theme=dark] .sidebar{border-right-color:#334155}[data-theme=dark] .navbar,[data-theme=dark] .tab-bar{border-bottom-color:#334155}[data-theme=dark] .btn-ghost:hover:not(:disabled){background:#334155;color:var(--text)}[data-theme=dark] .btn-ghost{color:var(--muted);border-color:var(--border)}[data-theme=dark] .nav-item:hover,[data-theme=dark] .nav-item.active{background:#1e3a5f;color:var(--primary)}*,*:before,*:after{transition:background-color .3s ease,border-color .3s ease,color .2s ease}.btn{transition:background .15s,border-color .15s,transform .1s,box-shadow .15s,color .2s}.theme-toggle{position:fixed;top:1rem;right:1.25rem;z-index:200;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--border);background:var(--card);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);transition:background .3s,border-color .3s,transform .15s}.theme-toggle:hover{transform:scale(1.1)}.theme-icon{font-size:1.1rem;line-height:1;transition:transform .4s ease}.theme-toggle:hover .theme-icon{transform:rotate(20deg)}.dashboard-layout{position:relative}.sidebar-collapsed{width:64px!important}.sidebar-collapsed .sidebar-logo,.sidebar-collapsed .user-name,.sidebar-collapsed .user-login{display:none}.sidebar-collapsed~.main-area{margin-left:64px}.sidebar{transition:width .25s ease,background-color .3s,border-color .3s}.main-area{transition:margin-left .25s ease}