:root{--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--accent-jade: #73daca;--accent-jade-hover: #5fc4b4;--accent-jade-deep: #41a6b5;--accent-jade-bright: #a4f3e2;--accent-coral: #f7768e;--accent-coral-hover: #e15c75;--accent-sun: #e0af68;--accent-sun-hover: #cf9a51;--accent-lagoon: #7aa2f7;--accent-lagoon-hover: #5e88e8;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-pill: 999px;--transition-fast: .15s ease;--transition-normal: .22s cubic-bezier(.4, 0, .2, 1);--color-primary: var(--accent-jade);--color-primary-hover: var(--accent-jade-hover);--color-success: var(--accent-jade);--color-success-hover: var(--accent-jade-hover);--color-danger: var(--accent-coral);--color-danger-hover: var(--accent-coral-hover);--color-warning: var(--accent-sun);--color-warning-hover: var(--accent-sun-hover);--color-ghost-border: var(--accent-jade);--color-ghost-border-hover: var(--accent-jade-hover);--tag-chip-bg: var(--accent-jade-soft);--tag-chip-border: var(--accent-jade-overlay);--tag-chip-fg: var(--accent-jade)}:root[data-theme=dark]{color-scheme:dark;--sidebar-bg: #16161e;--sidebar-bg-hover: #1f2335;--sidebar-bg-active: #292e42;--sidebar-border: #1f2335;--sidebar-border-light: #292e42;--sidebar-text: #9aa5ce;--sidebar-text-muted: #565f89;--sidebar-text-hover: #c0caf5;--sidebar-accent: #7aa2f7;--bg-main: #1a1b26;--surface-card: #24283b;--surface-elevated: #292e42;--surface-muted: #1f2335;--border-card: #3b4261;--border-soft: #292e42;--shadow-card: 0 1px 2px rgba(0, 0, 0, .32), 0 6px 18px rgba(0, 0, 0, .4);--shadow-card-hover: 0 2px 4px rgba(0, 0, 0, .4), 0 14px 32px rgba(0, 0, 0, .5);--shadow-elevated: 0 24px 60px rgba(0, 0, 0, .6);--text-primary: #c0caf5;--text-muted: #9aa5ce;--text-on-accent: #16161e;--accent-jade-soft: rgba(115, 218, 202, .16);--accent-jade-overlay: rgba(115, 218, 202, .28);--accent-jade-text: var(--accent-jade);--accent-coral-soft: rgba(247, 118, 142, .16);--color-primary-text: var(--text-on-accent);--color-secondary: var(--surface-muted);--color-secondary-hover: var(--border-card);--color-secondary-text: var(--text-primary);--color-danger-text: var(--text-on-accent);--color-ghost-bg-hover: var(--accent-jade-soft);--ring-focus: 0 0 0 3px var(--accent-jade-soft);--ring-focus-strong: 0 0 0 3px var(--accent-jade-overlay);--gradient-tropical: linear-gradient(180deg, var(--accent-jade) 0%, var(--accent-jade-hover) 100%);--gradient-tropical-overlay: linear-gradient(135deg, rgba(115, 218, 202, .22) 0%, rgba(122, 162, 247, .22) 100%);--shadow-tropical: 0 1px 0 rgba(255, 255, 255, .18) inset, 0 8px 22px rgba(0, 0, 0, .45);--text-on-tropical: var(--text-on-accent)}:root[data-theme=light]{color-scheme:light;--sidebar-bg: #eef0f4;--sidebar-bg-hover: #e1e6ef;--sidebar-bg-active: #d4dbe8;--sidebar-border: #d4dbe8;--sidebar-border-light: #e1e6ef;--sidebar-text: #4c5174;--sidebar-text-muted: #7a82a2;--sidebar-text-hover: #1a1b26;--sidebar-accent: #3d59a1;--bg-main: #f7f6f1;--surface-card: #ffffff;--surface-elevated: #fdfcf8;--surface-muted: #ecebe6;--border-card: #d8d6cd;--border-soft: #e5e3dc;--shadow-card: 0 1px 2px rgba(20, 26, 42, .06), 0 4px 12px rgba(20, 26, 42, .05);--shadow-card-hover: 0 2px 4px rgba(20, 26, 42, .1), 0 10px 24px rgba(20, 26, 42, .08);--shadow-elevated: 0 18px 44px rgba(20, 26, 42, .14);--text-primary: #1a1b26;--text-muted: #565f89;--text-on-accent: #16161e;--accent-jade-soft: rgba(65, 166, 181, .14);--accent-jade-overlay: rgba(65, 166, 181, .24);--accent-jade-text: var(--accent-jade-deep);--accent-coral-soft: rgba(247, 118, 142, .14);--tag-chip-bg: var(--accent-jade-overlay);--tag-chip-border: var(--accent-jade-deep);--tag-chip-fg: var(--accent-jade-deep);--color-primary-text: var(--text-on-accent);--color-secondary: var(--surface-muted);--color-secondary-hover: var(--border-soft);--color-secondary-text: var(--text-primary);--color-danger-text: #ffffff;--color-ghost-bg-hover: var(--accent-jade-soft);--ring-focus: 0 0 0 3px var(--accent-jade-soft);--ring-focus-strong: 0 0 0 3px var(--accent-jade-overlay);--gradient-tropical: linear-gradient(180deg, var(--accent-jade) 0%, var(--accent-jade-hover) 100%);--gradient-tropical-overlay: linear-gradient(135deg, rgba(115, 218, 202, .28) 0%, rgba(122, 162, 247, .28) 100%);--shadow-tropical: 0 1px 0 rgba(255, 255, 255, .55) inset, 0 6px 16px rgba(20, 26, 42, .12);--text-on-tropical: var(--text-on-accent)}:root:not([data-theme]){color-scheme:dark;--sidebar-bg: #16161e;--sidebar-bg-hover: #1f2335;--sidebar-bg-active: #292e42;--sidebar-border: #1f2335;--sidebar-border-light: #292e42;--sidebar-text: #9aa5ce;--sidebar-text-muted: #565f89;--sidebar-text-hover: #c0caf5;--sidebar-accent: #7aa2f7;--bg-main: #1a1b26;--surface-card: #24283b;--surface-elevated: #292e42;--surface-muted: #1f2335;--border-card: #3b4261;--border-soft: #292e42;--shadow-card: 0 1px 2px rgba(0, 0, 0, .32), 0 6px 18px rgba(0, 0, 0, .4);--shadow-card-hover: 0 2px 4px rgba(0, 0, 0, .4), 0 14px 32px rgba(0, 0, 0, .5);--shadow-elevated: 0 24px 60px rgba(0, 0, 0, .6);--text-primary: #c0caf5;--text-muted: #9aa5ce;--text-on-accent: #16161e;--accent-jade-soft: rgba(115, 218, 202, .16);--accent-jade-overlay: rgba(115, 218, 202, .28);--accent-jade-text: var(--accent-jade);--accent-coral-soft: rgba(247, 118, 142, .16);--color-primary-text: var(--text-on-accent);--color-secondary: var(--surface-muted);--color-secondary-hover: var(--border-card);--color-secondary-text: var(--text-primary);--color-danger-text: var(--text-on-accent);--color-ghost-bg-hover: var(--accent-jade-soft);--ring-focus: 0 0 0 3px var(--accent-jade-soft);--ring-focus-strong: 0 0 0 3px var(--accent-jade-overlay);--gradient-tropical: linear-gradient(180deg, var(--accent-jade) 0%, var(--accent-jade-hover) 100%);--gradient-tropical-overlay: linear-gradient(135deg, rgba(115, 218, 202, .22) 0%, rgba(122, 162, 247, .22) 100%);--shadow-tropical: 0 1px 0 rgba(255, 255, 255, .18) inset, 0 8px 22px rgba(0, 0, 0, .45);--text-on-tropical: var(--text-on-accent)}.panel{background:var(--surface-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--spacing-lg)}.panel-flush{background:var(--surface-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.panel-elevated{background:var(--surface-elevated);border:1px solid var(--border-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-elevated);padding:var(--spacing-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:.625rem 1.1rem;font:inherit;font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);user-select:none;white-space:nowrap}.btn:disabled,.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed}.btn:focus-visible{outline:none;box-shadow:var(--ring-focus-strong)}.btn svg{width:1em;height:1em;flex-shrink:0}.btn-sm{padding:.35rem .75rem;font-size:var(--font-size-sm)}.btn-md{padding:.625rem 1.1rem;font-size:var(--font-size-base)}.btn-lg{padding:.875rem 1.6rem;font-size:var(--font-size-lg)}.btn-primary{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-primary-text)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-secondary{background:var(--color-secondary);border-color:var(--color-secondary);color:var(--color-secondary-text)}.btn-secondary:hover:not(:disabled){background:var(--color-secondary-hover);border-color:var(--color-secondary-hover)}.btn-success{background:var(--color-success);border-color:var(--color-success);color:var(--color-primary-text)}.btn-success:hover:not(:disabled){background:var(--color-success-hover);border-color:var(--color-success-hover)}.btn-ghost{background:transparent;border-color:var(--color-ghost-border);color:var(--color-ghost-border)}.btn-ghost:hover:not(:disabled){background:var(--color-ghost-bg-hover);border-color:var(--color-ghost-border-hover);color:var(--color-ghost-border-hover)}.btn-danger{background:var(--color-danger);border-color:var(--color-danger);color:var(--color-danger-text)}.btn-danger:hover:not(:disabled){background:var(--color-danger-hover);border-color:var(--color-danger-hover)}.btn-pill{border-radius:var(--radius-pill)}.btn-icon{padding:.5rem;border-radius:50%}.chip{display:inline-flex;align-items:center;gap:var(--spacing-xs);padding:.18rem .55rem;font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);border-radius:var(--radius-pill);background:var(--accent-jade-soft);color:var(--accent-jade);border:1px solid transparent;line-height:1.4}.chip-outline{background:transparent;border-color:var(--accent-jade);color:var(--accent-jade)}.chip-warning{background:#e0af682e;color:var(--accent-sun)}.chip-danger{background:var(--accent-coral-soft);color:var(--accent-coral)}.hint{background:var(--accent-jade-soft);border:1px solid transparent;color:var(--accent-jade);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);font-size:var(--font-size-sm)}.input{width:100%;padding:.6rem .85rem;background:var(--surface-muted);color:var(--text-primary);border:1px solid var(--border-card);border-radius:var(--radius-md);font:inherit;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background var(--transition-fast)}.input::placeholder{color:var(--text-muted);opacity:.7}.input:focus,.input:focus-visible{outline:none;border-color:var(--accent-jade);background:var(--surface-card);box-shadow:var(--ring-focus)}.focus-ring:focus-visible{outline:none;box-shadow:var(--ring-focus)}.badge{display:inline-block;font-weight:var(--font-weight-semibold);text-transform:uppercase;letter-spacing:.05em;border-radius:var(--radius-sm)}.badge-sm{padding:.3rem .6rem;font-size:.7rem}.badge-md{padding:.35rem .75rem;font-size:var(--font-size-sm)}.badge-default{background:var(--border-card);color:var(--text-muted)}.badge-language,.badge-status{background:var(--accent-jade-soft);color:var(--accent-jade)}.card{position:relative;background:var(--surface-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow-card);transition:transform var(--transition-normal),box-shadow var(--transition-normal),border-color var(--transition-normal)}.card-interactive{cursor:pointer}.card-interactive:hover{border-color:var(--accent-jade);box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}a.card-feature{text-decoration:none;color:inherit;display:block;padding:var(--spacing-lg)}.card-feature:hover{transform:translateY(-4px);border-color:var(--accent-jade);box-shadow:var(--shadow-card-hover)}.card-icon{width:48px;height:48px;background:var(--accent-jade-soft);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-md);color:var(--accent-jade-hover)}.card-icon svg{width:24px;height:24px}.card-title{font-weight:var(--font-weight-bold);font-size:1.05rem;color:var(--text-primary);margin-bottom:var(--spacing-sm);line-height:1.3}.card-description{color:var(--text-muted);font-size:var(--font-size-sm)}.card-preview{color:var(--text-muted);font-size:var(--font-size-sm);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-top:var(--spacing-sm)}.card-meta{display:flex;justify-content:space-between;align-items:center;margin-top:var(--spacing-md);padding-top:.75rem;border-top:1px solid var(--border-soft);font-size:var(--font-size-xs);color:var(--text-muted)}.card-header{padding-bottom:var(--spacing-sm);border-bottom:2px solid var(--accent-jade);margin-bottom:var(--spacing-sm)}.chat-history{max-height:200px;overflow:hidden;margin:var(--spacing-xs) .75rem 0 2.25rem;padding-left:var(--spacing-sm);border-left:1px solid var(--sidebar-border-light)}.chat-history-list{overflow-y:auto;max-height:200px}.chat-history-item{display:flex;align-items:center;height:32px;padding:0 var(--spacing-xs);margin:var(--spacing-xs) 0;cursor:pointer;border-radius:var(--radius-sm);overflow:hidden;transition:background var(--transition-fast)}.chat-history-item:hover{background:#ffffff0d}.chat-history-item.active{background:#ffffff14}.chat-history-title{flex:1;min-width:0;font-size:var(--font-size-base);color:var(--sidebar-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:32px;transition:color var(--transition-fast)}.chat-history-item:hover .chat-history-title,.chat-history-item.active .chat-history-title{color:var(--sidebar-text)}.chat-history-title-input{flex:1;min-width:0;font-size:var(--font-size-base);background:transparent;border:none;border-bottom:1px solid var(--sidebar-accent);color:var(--sidebar-text);padding:0;margin:0;outline:none;font-family:inherit;line-height:30px}.chat-history-btn{flex-shrink:0;width:22px;text-align:center;background:transparent;border:none;color:#555;font-size:var(--font-size-sm);cursor:pointer;opacity:0;transition:opacity var(--transition-fast),color var(--transition-fast);line-height:1}.chat-history-item:hover .chat-history-btn{opacity:1}.chat-history-btn:hover{color:var(--sidebar-text)}.chat-history-btn.delete:hover{color:#e66}.empty-state{color:var(--text-muted);text-align:center;padding:var(--spacing-xl)}.empty-state-default{background:var(--surface-card);border-radius:var(--radius-lg)}.empty-state-dashed{background:var(--surface-card);border-radius:var(--radius-lg);border:2px dashed var(--border-card);padding:3rem var(--spacing-xl)}.empty-state-inline{padding:var(--spacing-md);font-size:.9rem}.empty-state-message{margin:0;font-style:italic}.empty-state svg{width:48px;height:48px;opacity:.3;margin-bottom:var(--spacing-md)}.loading-state{color:var(--text-muted);text-align:center;padding:var(--spacing-xl)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.form-group label{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--text-muted)}.form-row{display:flex;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.form-row .form-group{flex:1}.form-input,.form-group input,.form-group select,.form-group textarea{padding:.75rem;background:var(--surface-muted);color:var(--text-primary);border:1px solid var(--border-card);border-radius:var(--radius-md);font:inherit;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background var(--transition-fast);width:100%}.form-input:focus,.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent-jade);background:var(--surface-card);box-shadow:var(--ring-focus)}.form-group textarea{resize:vertical;min-height:100px;line-height:var(--line-height-relaxed)}.header-panel{display:flex;flex-direction:column;gap:.75rem;background:var(--surface-card);border:1px solid var(--border-card);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-lg);margin-bottom:var(--spacing-md);box-shadow:var(--shadow-card)}.header-panel-row{display:flex;align-items:center;gap:var(--spacing-md);flex-wrap:wrap}.header-panel-label{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;min-width:64px;flex-shrink:0}.header-panel-spacer{flex:1}.tag-pick-row{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);flex:1;min-width:0}.tag-pick-empty{color:var(--text-muted);font-size:var(--font-size-sm);font-style:italic}.tag-pick{display:inline-flex;align-items:center;padding:.3rem .75rem;background:var(--surface-muted);color:var(--text-primary);border:1px solid var(--border-card);border-radius:var(--radius-pill);font:inherit;font-size:var(--font-size-sm);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast)}.tag-pick:hover{border-color:var(--accent-jade);color:var(--accent-jade)}.tag-pick.selected{background:var(--accent-jade-soft);border-color:var(--accent-jade);color:var(--accent-jade)}.source-picker{position:relative;flex:1;min-width:0;max-width:360px}.source-picker-input-wrap{position:relative;display:flex;align-items:center}.source-picker-input{width:100%;padding:.4rem 2rem .4rem .75rem;background:var(--surface-muted);color:var(--text-primary);border:1px solid var(--border-card);border-radius:var(--radius-md);font:inherit;font-size:var(--font-size-sm);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.source-picker-input::placeholder{color:var(--text-muted);opacity:.7}.source-picker-input:focus,.source-picker-input:focus-visible{outline:none;border-color:var(--accent-jade);box-shadow:var(--ring-focus)}.source-picker-clear{position:absolute;right:.4rem;top:50%;transform:translateY(-50%);width:1.3rem;height:1.3rem;display:inline-flex;align-items:center;justify-content:center;background:transparent;color:var(--text-muted);border:none;border-radius:var(--radius-pill);cursor:pointer;font-size:1.1rem;line-height:1;padding:0}.source-picker-clear:hover{background:var(--surface-elevated);color:var(--text-primary)}.source-picker-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:20;max-height:260px;overflow-y:auto;background:var(--surface-card);border:1px solid var(--border-card);border-radius:var(--radius-md);box-shadow:var(--shadow-card-hover);padding:.25rem}.source-picker-option{display:block;width:100%;text-align:left;padding:.4rem .6rem;background:transparent;color:var(--text-primary);border:none;border-radius:var(--radius-sm);cursor:pointer;font:inherit;font-size:var(--font-size-sm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.source-picker-option:hover,.source-picker-option:focus-visible{background:var(--accent-jade-soft);color:var(--text-primary);outline:none}.source-picker-option.synthetic{color:var(--text-muted);font-style:italic}.source-picker-empty{padding:.5rem .6rem;color:var(--text-muted);font-size:var(--font-size-sm);font-style:italic}.icon{flex-shrink:0}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;padding:0;background:transparent;border:1px solid var(--border-card);border-radius:var(--radius-md);color:var(--text-primary);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);text-decoration:none;flex-shrink:0}.icon-btn svg{width:24px;height:24px}.icon-btn:hover:not(:disabled){color:var(--accent-jade);border-color:var(--accent-jade);background:var(--accent-jade-soft)}.icon-btn:active:not(:disabled){transform:translateY(1px)}.icon-btn:focus-visible{outline:none;box-shadow:var(--ring-focus)}.icon-btn:disabled,.icon-btn[aria-disabled=true]{cursor:not-allowed}.icon-btn.active{background:var(--accent-jade);border-color:var(--accent-jade);color:var(--text-on-accent)}.icon-btn.active:hover:not(:disabled){background:var(--accent-jade-hover);border-color:var(--accent-jade-hover);color:var(--text-on-accent)}.icon-btn.engaged{border-color:var(--accent-jade);background:var(--accent-jade-soft);color:var(--accent-jade)}.icon-btn.engaged:hover:not(:disabled){background:var(--accent-jade-overlay);border-color:var(--accent-jade);color:var(--accent-jade)}.icon-btn-primary{background:var(--accent-jade);border-color:var(--accent-jade);color:var(--text-on-accent)}.icon-btn-primary:hover:not(:disabled){background:var(--accent-jade-hover);border-color:var(--accent-jade-hover);color:var(--text-on-accent)}.icon-btn-ghost{border-color:var(--accent-jade);color:var(--accent-jade)}.deck-author{display:inline-flex;align-items:center;gap:.35rem;padding:.2rem .65rem;background:var(--accent-jade-soft);color:var(--accent-jade);border-radius:var(--radius-pill);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}.deck-author-avatar{font-size:1.05rem;line-height:1}.deck-author-name{overflow:hidden;text-overflow:ellipsis}.import-deck-modal .modal-body{padding-bottom:.25rem}.import-deck-list{display:flex;flex-direction:column;gap:.25rem}.import-deck-row{display:flex;align-items:center;gap:var(--spacing-sm);padding:.4rem .6rem;background:var(--surface-muted);border:1px solid var(--border-card);border-radius:var(--radius-md);cursor:pointer;transition:border-color var(--transition-fast),background var(--transition-fast);min-width:0}.import-deck-row:hover{border-color:var(--accent-jade)}.import-deck-row.is-imported{opacity:.6;cursor:default}.import-deck-row 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