:root,:root[data-theme=light]{--bg-app: #ffffff;--bg-sidebar: #f9f9f9;--bg-sidebar-hover: #ececec;--bg-sidebar-active: #e3e3e3;--bg-elevated: #ffffff;--bg-bubble-user: #e8e8e8;--bg-code: #f6f8fa;--bg-code-inline: #ececec;--bg-input: #ffffff;--bg-input-focus: #ffffff;--bg-suggestion: #ffffff;--bg-suggestion-hover: #f5f5f5;--bg-overlay: rgba(0, 0, 0, .4);--bg-modal: #ffffff;--bg-table-row-hover: #f7f7f7;--bg-tag: #ececec;--fg-primary: #0d0d0d;--fg-secondary: #424242;--fg-muted: #8e8e8e;--fg-faint: #b4b4b4;--fg-link: #2563eb;--fg-on-accent: #ffffff;--border-default: #e3e3e3;--border-strong: #cdcdcd;--border-input: #d9d9d9;--border-input-focus: #0d0d0d;--accent: #0d0d0d;--accent-hover: #2a2a2a;--danger: #dc2626;--danger-hover: #b91c1c;--success: #16a34a;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-pill: 26px;--font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;--font-mono: "SF Mono", Menlo, Consolas, ui-monospace, monospace}:root[data-theme=dark]{--bg-app: #212121;--bg-sidebar: #171717;--bg-sidebar-hover: #232323;--bg-sidebar-active: #2a2a2a;--bg-elevated: #2f2f2f;--bg-bubble-user: #2f2f2f;--bg-code: #0d0d0d;--bg-code-inline: #2f2f2f;--bg-input: #303030;--bg-input-focus: #303030;--bg-suggestion: #2a2a2a;--bg-suggestion-hover: #353535;--bg-overlay: rgba(0, 0, 0, .6);--bg-modal: #2f2f2f;--bg-table-row-hover: #2a2a2a;--bg-tag: #3a3a3a;--fg-primary: #ececec;--fg-secondary: #b4b4b4;--fg-muted: #8e8e8e;--fg-faint: #5f5f5f;--fg-link: #7eb6ff;--fg-on-accent: #0d0d0d;--border-default: #373737;--border-strong: #4a4a4a;--border-input: #424242;--border-input-focus: #ececec;--accent: #ececec;--accent-hover: #ffffff;--danger: #ef4444;--danger-hover: #dc2626;--success: #22c55e;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 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var(--border-default);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.stat-card{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:20px 22px;box-shadow:var(--shadow-sm)}.stat-card__icon{width:36px;height:36px;border-radius:8px;background:var(--bg-sidebar);color:var(--fg-link);display:grid;place-items:center;margin-bottom:12px}.stat-card__value{font-size:32px;font-weight:700;line-height:1;margin-bottom:6px}.stat-card__label{font-size:12px;color:var(--fg-muted);font-weight:500}.chart-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 0}.chart-header__title{font-size:13px;font-weight:600;color:var(--fg-secondary)}.chart-header__total{font-size:12px;color:var(--fg-muted)}.bar-chart{display:flex;align-items:flex-end;height:140px;gap:6px;padding:12px 20px 0}.bar-chart__col{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end;gap:6px}.bar-chart__bar{width:100%;background:var(--border-strong);border-radius:4px 4px 0 0;min-height:4px;position:relative;transition:background .12s}.bar-chart__bar--today{background:var(--fg-link)}.bar-chart__bar:hover{opacity:.8}.bar-chart__label{font-size:10px;color:var(--fg-muted);padding-bottom:10px}.bar-chart__label--today{color:var(--fg-link);font-weight:600}.bar-chart__bar:hover:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%);background:var(--bg-modal);color:var(--fg-primary);padding:4px 8px;border-radius:4px;font-size:11px;white-space:nowrap;border:1px solid var(--border-default)}.data-table{width:100%;border-collapse:collapse;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-md);overflow:hidden}.data-table th,.data-table td{padding:10px 14px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--border-default)}.data-table th{background:var(--bg-sidebar);font-weight:600;color:var(--fg-secondary);font-size:12px;text-transform:uppercase;letter-spacing:.04em}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:var(--bg-table-row-hover)}.data-table__actions{display:flex;gap:6px;justify-content:flex-end}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:500;background:var(--bg-tag);color:var(--fg-secondary)}.badge--admin{background:var(--accent);color:var(--fg-on-accent)}.icon-btn{background:none;border:1px solid var(--border-default);color:var(--fg-secondary);padding:4px 10px;font-size:12px;border-radius:6px;cursor:pointer}.icon-btn:hover{background:var(--bg-sidebar-hover);color:var(--fg-primary)}.icon-btn--danger{color:var(--danger);border-color:var(--danger)}.icon-btn--danger:hover{background:var(--danger);color:#fff}.form-row{margin-bottom:14px}.form-row label.checkbox{display:inline-flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}.settings-card{padding:0}.settings-group{padding:20px 24px;border-bottom:1px solid var(--border-default)}.settings-group:last-child{border-bottom:none}.settings-group__title{font-size:12px;font-weight:600;color:var(--fg-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px}.settings-row{display:flex;align-items:flex-start;gap:24px;margin-bottom:14px}.settings-row:last-child{margin-bottom:0}.settings-row__label{display:flex;flex-direction:column;gap:3px;min-width:160px;font-size:14px;font-weight:500;padding-top:10px}.settings-row__hint{font-size:12px;color:var(--fg-muted);font-weight:400}.settings-row .field-input{flex:1}.settings-select{flex:1;padding:9px 12px;background:var(--bg-input);border:1px solid var(--border-input);border-radius:var(--radius-md);font-size:14px;color:var(--fg-primary);outline:none;font-family:inherit;cursor:pointer;width:100%}.settings-select:focus{border-color:var(--border-input-focus);box-shadow:0 0 0 1px var(--border-input-focus)}.settings-textarea{width:100%;min-height:160px;padding:12px 14px;background:var(--bg-input);border:1px solid var(--border-input);border-radius:var(--radius-md);font-family:var(--font-mono);font-size:13px;color:var(--fg-primary);outline:none;resize:vertical;line-height:1.6}.settings-textarea:focus{border-color:var(--border-input-focus);box-shadow:0 0 0 1px var(--border-input-focus)}.settings-footer{padding:20px 24px;display:flex;align-items:center;gap:16px;background:var(--bg-sidebar);border-top:1px solid var(--border-default)}.settings-saved{font-size:13px;color:var(--success)}.settings-hint{font-size:12px;color:var(--fg-muted);margin-left:auto}.toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px}.toolbar__spacer{flex:1}.toggle{position:relative;display:inline-flex;align-items:center;cursor:pointer;flex-shrink:0}.toggle input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.toggle__track{width:42px;height:24px;border-radius:999px;background:var(--border-strong);transition:background .14s;display:inline-block;position:relative}.toggle__thumb{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #0000004d;transition:transform .14s}.toggle input:checked+.toggle__track{background:var(--accent)}.toggle input:checked+.toggle__track .toggle__thumb{transform:translate(18px)}.toggle input:focus-visible+.toggle__track{box-shadow:0 0 0 2px var(--bg-app),0 0 0 4px var(--accent)}.model-picker{position:relative;flex-shrink:0}.model-picker__btn{display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 10px;background:transparent;border:1px solid var(--border-default);border-radius:var(--radius-md);color:var(--fg-secondary);font-size:12.5px;cursor:pointer;max-width:220px;transition:background 80ms,color 80ms,border-color 80ms}.model-picker__btn:hover{background:var(--bg-sidebar-hover);color:var(--fg-primary)}.model-picker__label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:180px;font-family:var(--font-mono);font-size:12px}.model-picker__menu{position:absolute;top:calc(100% + 6px);left:0;z-index:30;min-width:240px;max-width:360px;max-height:360px;overflow-y:auto;background:var(--bg-modal);border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:4px;animation:fade-in .12s ease}.model-picker__item{display:block;width:100%;text-align:left;background:none;border:none;padding:7px 10px;font-size:13px;font-family:var(--font-mono);color:var(--fg-primary);border-radius:6px;cursor:pointer}.model-picker__item:hover{background:var(--bg-sidebar-hover)}.model-picker__item--active{background:var(--bg-sidebar-active);font-weight:600}.model-picker__hint{padding:10px;font-size:12px;color:var(--fg-muted)}@keyframes msg-fade-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}@keyframes caret-blink{0%,to{opacity:1}50%{opacity:0}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes modal-pop{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}@media(max-width:768px){.admin-header{flex-wrap:wrap;height:auto;padding:8px 12px;gap:8px;row-gap:8px}.admin-header__left{order:1}.admin-header__right{order:2;margin-left:auto;gap:6px}.admin-header__right .admin-user-badge span{display:none}.admin-header__right .admin-user-badge{padding:4px}.admin-back-btn{padding:6px 10px}.admin-nav{order:3;flex-basis:100%;justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:2px}.admin-nav::-webkit-scrollbar{display:none}.admin-nav__btn{flex-shrink:0;padding:7px 10px}.admin-body{padding:16px 12px}.section-header{flex-wrap:wrap;gap:12px}.section-header__title{font-size:18px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}.stat-card{padding:14px 16px}.stat-card__value{font-size:24px}.admin-card.data-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.admin-card .data-table{min-width:720px}.settings-row{flex-direction:column;align-items:stretch;gap:8px}.settings-row__label{padding-top:0;min-width:0}.settings-group{padding:16px}.settings-footer{padding:16px;flex-wrap:wrap}.settings-hint{margin-left:0;flex-basis:100%}.sidebar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:39;animation:fade-in .18s ease}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:40;box-shadow:var(--shadow-lg);width:280px;min-width:280px;transform:translate(0);border-right-width:1px}.sidebar--collapsed{width:280px;min-width:280px}.sidebar--hidden{transform:translate(-100%);width:280px;min-width:280px;border-right-width:1px}.empty__suggestions{grid-template-columns:repeat(2,1fr)}.msg__bubble--user{max-width:88%}.messages{padding:16px 12px 12px}.composer-wrap{padding:6px 12px 12px}}