:root{--space-xs: 2px;--space-sm: 4px;--space-md: 8px;--space-lg: 12px;--space-xl: 16px;--space-2xl: 24px;--radius-sm: 2px;--radius-md: 3px;--radius-lg: 4px;--font-xs: 11px;--font-sm: 12px;--font-md: 13px;--font-lg: 14px;--font-xl: 16px;--font-2xl: 18px;--font-3xl: 22px;--line-height-tight: 1.2;--line-height-normal: 1.4;--row-height: 32px;--header-height: 36px;--toolbar-height: 36px;--statusbar-height: 24px;--input-height: 28px;--app-nav-height: 36px;--app-content-max-width: 680px;--transition-fast: .1s ease;--transition-normal: .15s ease;--transition-slow: .25s ease;--transition-enter: .2s ease-out;--transition-exit: .15s ease-in;--duration-fast: .1s;--duration-normal: .15s;--duration-slow: .25s;--duration-enter: .2s;--duration-exit: .15s;--ease-out-back: cubic-bezier(.34, 1.56, .64, 1);--ease-out-quart: cubic-bezier(.25, 1, .5, 1);--z-dropdown: 100;--z-modal-backdrop: 200;--z-modal: 300;--z-tooltip: 400;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 8px rgba(0, 0, 0, .15)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes popIn{0%{opacity:0;transform:scale(.8)}60%{transform:scale(1.05)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f1f3f4;--bg-hover: #e8eaed;--bg-active: #dadce0;--bg-selected: #e8f0fe;--bg-selected-hover: #d2e3fc;--text-primary: #202124;--text-secondary: #5f6368;--text-tertiary: #80868b;--text-disabled: #bdc1c6;--text-inverse: #ffffff;--border-light: #e8eaed;--border-default: #dadce0;--border-strong: #bdc1c6;--border-focus: #1a73e8;--accent-primary: #1a73e8;--accent-primary-hover: #1557b0;--accent-primary-light: #e8f0fe;--accent-secondary: #34a853;--accent-warning: #f9ab00;--accent-error: #ea4335;--video-bg: #000000;--overlay-bg: rgba(0, 0, 0, .5);--scrollbar-track: #f1f3f4;--scrollbar-thumb: #bdc1c6;--scrollbar-thumb-hover: #9aa0a6;--weather-cat-clear: #5a9e6f;--weather-cat-cloudy: #8a8a8a;--weather-cat-rain: #4a7fb5;--weather-cat-snow: #7aaed4;--weather-cat-fog: #8a9da8;--weather-cat-extreme: #c45a5a}[data-theme=dark]{--bg-primary: #1e1e1e;--bg-secondary: #252526;--bg-tertiary: #2d2d30;--bg-hover: #3c3c3c;--bg-active: #4a4a4a;--bg-selected: #264f78;--bg-selected-hover: #2d5a8a;--text-primary: #e4e4e4;--text-secondary: #a0a0a0;--text-tertiary: #707070;--text-disabled: #505050;--text-inverse: #1e1e1e;--border-light: #3c3c3c;--border-default: #4a4a4a;--border-strong: #5a5a5a;--border-focus: #569cd6;--accent-primary: #569cd6;--accent-primary-hover: #6eb3eb;--accent-primary-light: #264f78;--accent-secondary: #4ec9b0;--accent-warning: #dcdcaa;--accent-error: #f14c4c;--video-bg: #000000;--overlay-bg: rgba(0, 0, 0, .6);--scrollbar-track: #2d2d30;--scrollbar-thumb: #5a5a5a;--scrollbar-thumb-hover: #6a6a6a;--weather-cat-clear: #68b580;--weather-cat-cloudy: #9a9a9a;--weather-cat-rain: #5a8fc5;--weather-cat-snow: #8abee4;--weather-cat-fog: #9aadbb;--weather-cat-extreme: #d46a6a}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;font-size:var(--font-md);line-height:var(--line-height-normal);color:var(--text-primary);background-color:var(--bg-primary);overflow:hidden}#root{height:100vh;width:100vw;display:flex;flex-direction:column}button,input,select,textarea{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit}button{cursor:pointer;border:none;background:none}input,textarea{border:none;background:none;outline:none}a{color:var(--accent-primary);text-decoration:none}a:hover{text-decoration:underline}ul,ol{list-style:none}img,video{display:block;max-width:100%}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:var(--radius-lg);border:2px solid var(--scrollbar-track)}::-webkit-scrollbar-thumb:hover{background:var(--scrollbar-thumb-hover)}*{scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) var(--scrollbar-track)}:focus-visible{outline:2px solid var(--border-focus);outline-offset:1px}:focus:not(:focus-visible){outline:none}::selection{background-color:var(--accent-primary-light);color:var(--text-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);border-radius:var(--radius-md);font-weight:500;white-space:nowrap;transition:background-color var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{height:24px;padding:0 var(--space-md);font-size:var(--font-xs)}.btn-md{height:var(--input-height);padding:0 var(--space-lg);font-size:var(--font-sm)}.btn-icon-only.btn-sm{width:24px;padding:0}.btn-icon-only.btn-md{width:var(--input-height);padding:0}.btn-default{background-color:transparent;border:1px solid var(--border-default);color:var(--text-primary)}.btn-default:hover:not(:disabled){background-color:var(--bg-hover);border-color:var(--border-strong)}.btn-default:active:not(:disabled){background-color:var(--bg-active)}.btn:active:not(:disabled){transform:scale(.97)}.btn-primary{background-color:var(--accent-primary);border:1px solid var(--accent-primary);color:var(--text-inverse)}.btn-primary:hover:not(:disabled){background-color:var(--accent-primary-hover);border-color:var(--accent-primary-hover);box-shadow:var(--shadow-sm)}.btn-ghost{background-color:transparent;border:1px solid transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background-color:var(--bg-hover);color:var(--text-primary)}.btn-ghost:active:not(:disabled){background-color:var(--bg-active)}.btn-danger{background-color:transparent;border:1px solid var(--accent-error);color:var(--accent-error)}.btn-danger:hover:not(:disabled){background-color:var(--accent-error);color:var(--text-inverse)}.btn-icon{display:flex;align-items:center;justify-content:center;font-size:1em}.btn-icon svg{width:1em;height:1em}.btn-label{display:flex;align-items:center}.input{height:var(--input-height);padding:0 var(--space-md);background-color:var(--bg-primary);border:1px solid var(--border-default);border-radius:var(--radius-md);font-size:var(--font-sm);color:var(--text-primary);transition:border-color var(--transition-fast),background-color var(--transition-fast),box-shadow var(--transition-fast)}.input:hover:not(:disabled){border-color:var(--border-strong)}.input:focus{border-color:var(--border-focus);background-color:var(--bg-primary);box-shadow:0 0 0 2px var(--accent-primary-light)}.input:disabled{background-color:var(--bg-tertiary);color:var(--text-disabled);cursor:not-allowed}.input::placeholder{color:var(--text-tertiary)}.input-error{border-color:var(--accent-error)}.input-error:focus{border-color:var(--accent-error)}.modal{padding:0;border:none;border-radius:var(--radius-lg);background-color:var(--bg-primary);box-shadow:var(--shadow-lg);max-height:85vh;overflow:visible;margin:auto;animation-name:scaleIn;animation-duration:var(--duration-enter);animation-timing-function:var(--ease-out-quart)}.modal::backdrop{background-color:var(--overlay-bg);animation-name:fadeIn;animation-duration:var(--duration-enter);animation-timing-function:ease-out}.modal-sm{width:320px}.modal-md{width:480px}.modal-lg{width:640px}.modal-content{display:flex;flex-direction:column;max-height:85vh}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--border-light)}.modal-title{font-size:var(--font-lg);font-weight:600;color:var(--text-primary);margin:0}.modal-close{display:flex;align-items:center;justify-content:center;width:24px;height:24px;font-size:20px;line-height:1;color:var(--text-secondary);border-radius:var(--radius-sm);transition:background-color var(--transition-fast),color var(--transition-fast)}.modal-close:hover{background-color:var(--bg-hover);color:var(--text-primary)}.modal-body{padding:var(--space-xl);overflow-y:auto;flex:1}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-md);padding:var(--space-lg) var(--space-xl);border-top:1px solid var(--border-light)}.data-dropdown{position:absolute;top:100%;right:0;margin-top:var(--space-xs);width:280px;padding:var(--space-md);background-color:var(--bg-primary);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:100;display:flex;flex-direction:column;gap:var(--space-md);animation-name:slideInDown;animation-duration:var(--duration-enter);animation-timing-function:var(--ease-out-quart);transform-origin:top right}.data-dropdown-section{display:flex;flex-direction:column;gap:var(--space-sm)}.data-dropdown-label{font-size:var(--font-xs);font-weight:600;color:var(--text-primary)}.data-dropdown-hint{font-size:var(--font-xs);color:var(--text-secondary);margin:0;line-height:var(--line-height-normal)}.data-dropdown-divider{border:none;border-top:1px solid var(--border-light);margin:0}.data-dropdown-import-row{display:flex;align-items:center;gap:var(--space-sm);flex-wrap:wrap}.data-dropdown-file-input{display:none}.data-dropdown-error{font-size:var(--font-xs);color:var(--accent-error);margin:0}.app-nav{display:flex;align-items:center;height:var(--app-nav-height);padding:0 var(--space-lg);background-color:var(--bg-primary);border-bottom:1px solid var(--border-default);flex-shrink:0;gap:var(--space-md)}.app-nav-brand{font-size:var(--font-sm);font-weight:600;color:var(--text-primary);white-space:nowrap;-webkit-user-select:none;user-select:none}.app-nav-links{position:relative;display:flex;align-items:center;gap:var(--space-xs);flex:1;justify-content:center}.app-nav-link{padding:var(--space-sm) var(--space-md) var(--space-md);font-size:var(--font-xs);font-weight:500;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius-sm);transition:color var(--transition-normal),background-color var(--transition-normal)}.app-nav-link:hover{color:var(--text-primary);background-color:var(--bg-hover)}.app-nav-link--active{color:var(--accent-primary)}.app-nav-indicator{position:absolute;bottom:0;left:0;height:2px;background-color:var(--accent-primary);border-radius:1px;transition:transform var(--duration-slow) var(--ease-out-quart),width var(--duration-slow) var(--ease-out-quart),opacity var(--duration-normal) ease;opacity:0;pointer-events:none}.app-nav-actions{display:flex;align-items:center;gap:var(--space-sm)}.app-nav-dropdown-anchor{position:relative}.app-nav-theme-btn{display:flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-normal),background-color var(--transition-normal),transform var(--transition-normal)}.app-nav-theme-icon{display:flex;animation-name:fadeIn;animation-duration:var(--duration-enter);animation-timing-function:ease-out}.app-nav-theme-btn:hover{color:var(--text-primary);background-color:var(--bg-hover)}.app-content{height:calc(100vh - var(--app-nav-height));overflow:hidden}.app-content--scrollable{overflow-y:auto}.app-page-centered{max-width:var(--app-content-max-width);margin:0 auto;padding:var(--space-2xl) var(--space-xl)}.app-loading{flex:1;animation:pulse 1s ease-in-out infinite;background-color:var(--bg-secondary)}