:root{--color-primary:#22c55e;--color-primary-dark:#16a34a;--color-primary-darker:#15803d;--color-primary-light:#dcfce7;--color-primary-lighter:#f0fdf4;--color-bg:#f3f4f6;--color-surface:#ffffff;--color-text:#111827;--color-text-secondary:#4b5563;--color-text-muted:#6b7280;--color-text-light:#9ca3af;--color-border:#e5e7eb;--color-border-light:#f3f4f6;--color-border-input:#d1d5db;--color-danger:#ef4444;--color-danger-light:#fee2e2;--color-danger-dark:#991b1b;--color-warning:#f59e0b;--color-warning-light:#fef3c7;--color-warning-dark:#92400e;--color-info:#3b82f6;--color-info-light:#dbeafe;--color-info-dark:#1e40af;--color-success:#22c55e;--color-success-light:#dcfce7;--color-success-dark:#166534;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:0.75rem;--space-lg:1rem;--space-xl:1.5rem;--space-2xl:2rem;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:20px;--radius-full:999px;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 2px 8px rgba(0,0,0,0.1);--shadow-lg:0 10px 40px rgba(0,0,0,0.1);--shadow-button:0 4px 12px rgba(34,197,94,0.3);--font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto",sans-serif;--font-size-xs:0.75rem;--font-size-sm:0.85rem;--font-size-base:0.95rem;--font-size-md:1rem;--font-size-lg:1.2rem;--font-size-xl:1.5rem;--font-size-2xl:2rem;--font-size-3xl:3rem;--transition-fast:0.15s ease;--transition-base:0.2s ease}*,:after,:before{margin:0;padding:0;box-sizing:border-box}body,html{height:100%;font-family:var(--font-family);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background:#f8fafc;min-height:100vh;color:var(--color-text);line-height:1.5}@keyframes chatTypingBlink{0%,60%,to{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-2px)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes toastSlideIn{0%{opacity:0;transform:translateX(100%) scale(.9)}to{opacity:1;transform:translateX(0) scale(1)}}@keyframes toastSlideOut{0%{opacity:1;transform:translateX(0) scale(1)}to{opacity:0;transform:translateX(100%) scale(.9)}}main{padding:var(--space-2xl)}.container,main{width:100%;max-width:1200px;margin:0 auto}button{font-family:var(--font-family);cursor:pointer;border:none;border-radius:var(--radius-md);padding:var(--space-md) var(--space-xl);font-size:var(--font-size-md);font-weight:600;transition:all var(--transition-base);display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);line-height:1.4}button:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.12)}button:active{transform:translateY(0)}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#ffffff;border-radius:var(--radius-md);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-size:var(--font-size-md);font-weight:600;line-height:1.4;cursor:pointer;border:none;transition:all var(--transition-base)}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:var(--shadow-button);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:var(--color-light-gray,#f3f4f6);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-md);text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);font-size:var(--font-size-md);font-weight:600;line-height:1.4;cursor:pointer;transition:all var(--transition-base)}.btn-secondary:hover{background:var(--color-border);transform:translateY(-1px)}.btn-secondary:active{transform:translateY(0)}.btn-danger{background:var(--color-danger);color:#ffffff;border-radius:var(--radius-md)}.btn-danger:hover{background:#dc2626;box-shadow:0 4px 12px rgba(239,68,68,.3)}.btn-sm{padding:var(--space-sm) var(--space-lg);font-size:var(--font-size-sm);border-radius:var(--radius-sm);min-height:32px}.btn-ghost{background:transparent;color:var(--color-text-secondary);padding:var(--space-sm) var(--space-md)}.btn-ghost:hover{background:var(--color-border-light);box-shadow:none}.btn-link{background:none;color:var(--color-primary);padding:0;font-size:var(--font-size-base);font-weight:500;text-decoration:underline}.btn-link:hover{color:var(--color-primary-dark);box-shadow:none;transform:none}input,select,textarea{font-family:var(--font-family);border:1px solid var(--color-border-input);border-radius:var(--radius-md);padding:var(--space-md);font-size:var(--font-size-base);color:var(--color-text);background:var(--color-surface);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);width:100%;box-sizing:border-box}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(34,197,94,.1)}input::placeholder,textarea::placeholder{color:var(--color-text-light)}input:disabled,select:disabled,textarea:disabled{background:var(--color-border-light);color:var(--color-text-muted)}label{display:block;margin-bottom:var(--space-xs);font-weight:600;color:var(--color-text);font-size:var(--font-size-base)}textarea{resize:vertical;min-height:80px}.card,.card-hoverable{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-2xl);box-shadow:var(--shadow-sm);border:1px solid var(--color-border)}.card-hoverable{transition:box-shadow var(--transition-base),transform var(--transition-base)}.card-hoverable:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.badge{display:inline-flex;align-items:center;padding:var(--space-xs) var(--space-md);border-radius:var(--radius-xl);font-size:var(--font-size-xs);font-weight:600;text-transform:uppercase;letter-spacing:.5px;line-height:1.4}.badge-success{background:var(--color-success-light);color:var(--color-success-dark)}.badge-warning{background:var(--color-warning-light);color:var(--color-warning-dark)}.badge-danger{background:var(--color-danger-light);color:var(--color-danger-dark)}.badge-info{background:var(--color-info-light);color:var(--color-info-dark)}h1{color:var(--color-text);margin-bottom:var(--space-lg);font-size:var(--font-size-2xl);font-weight:700;line-height:1.3}h2{font-size:var(--font-size-xl);line-height:1.3}h2,h3{color:var(--color-text);margin-bottom:var(--space-sm);font-weight:600}h3{font-size:var(--font-size-lg);line-height:1.4}p{color:var(--color-text-secondary);line-height:1.6}a{color:var(--color-primary-dark);transition:color var(--transition-fast)}a:hover{color:var(--color-primary-darker)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.modal-overlay{position:fixed;inset:0;background-color:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-lg);animation:fadeIn .15s ease}.modal-content{background:var(--color-surface);border-radius:var(--radius-lg);width:100%;max-width:480px;max-height:90vh;display:flex;flex-direction:column;box-shadow:0 10px 40px rgba(0,0,0,.25);overflow:hidden}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--color-border);flex-shrink:0}.modal-header h2{margin:0;font-size:1.25rem}.modal-body{overflow-y:auto;padding:var(--space-xl);flex:1 1}.modal-footer{display:flex;gap:var(--space-md);padding:var(--space-lg) var(--space-xl);border-top:1px solid var(--color-border);background:#fafafa;flex-shrink:0}@media (max-width:768px){main{padding:var(--space-lg)}}button:disabled{opacity:.65;cursor:not-allowed!important}button:disabled,button:disabled:hover{transform:none!important;box-shadow:none!important}.btn-loading{position:relative;color:transparent!important}.btn-loading:after{content:"";position:absolute;top:50%;left:50%;width:18px;height:18px;margin:-9px 0 0 -9px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:btn-spin .6s linear infinite}@keyframes btn-spin{to{transform:rotate(1turn)}}input:disabled,select:disabled,textarea:disabled{opacity:.6;cursor:not-allowed}