:root{--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-primary-light: #eef2ff;--color-danger: #ef4444;--color-success: #22c55e;--color-warning: #f59e0b;--color-text-primary: #1f2937;--color-text-secondary: #6b7280;--color-text-muted: #9ca3af;--color-border: #e5e7eb;--color-border-light: #f3f4f6;--color-bg-primary: #ffffff;--color-bg-secondary: #f9fafb;--color-bg-tertiary: #f3f4f6;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:var(--font-family);font-size:14px;line-height:1.5;color:var(--color-text-primary);background-color:var(--color-bg-secondary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{height:100%}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea,select{font-family:inherit;font-size:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;font-size:14px;font-weight:500;border-radius:var(--radius-sm);transition:all .2s ease;white-space:nowrap}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-secondary:hover{background-color:var(--color-border)}.btn-danger{background-color:var(--color-danger);color:#fff}.btn-danger:hover{background-color:#dc2626}.btn-ghost{color:var(--color-text-secondary)}.btn-ghost:hover{background-color:var(--color-bg-tertiary)}.form-group{margin-bottom:16px}.form-label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--color-text-primary)}.form-input{width:100%;padding:8px 12px;font-size:14px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background-color:var(--color-bg-primary);transition:border-color .2s ease,box-shadow .2s ease}.form-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.form-input::placeholder{color:var(--color-text-muted)}.card{background-color:var(--color-bg-primary);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.text-center{text-align:center}.text-danger{color:var(--color-danger)}.text-secondary{color:var(--color-text-secondary)}.mt-1{margin-top:4px}.mt-2{margin-top:8px}.mt-3{margin-top:12px}.mt-4{margin-top:16px}.mb-1{margin-bottom:4px}.mb-2{margin-bottom:8px}.mb-3{margin-bottom:12px}.mb-4{margin-bottom:16px}.w-full{width:100%}.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}