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.tag-card-desc{display:block;-webkit-line-clamp:none;overflow:visible}.expandable-toggle{margin-top:var(--space-2);margin-left:-14px;color:var(--accent)}.expandable-toggle:hover:not(:disabled){color:var(--accent-dim);background:var(--accent-glow)}.tag-card-desc-empty{flex:1;margin-bottom:var(--space-4);color:var(--text-muted);font-style:italic}.tag-card-actions{display:flex;gap:var(--space-1);margin-left:-14px}:root{color-scheme:dark;--bg: #0d0d0f;--bg-raised: #131317;--bg-elevated: #1a1a21;--border: #252530;--border-dim: #1e1e28;--border-hover: #353545;--accent: #2dd4bf;--accent-dim: #14b8a6;--accent-deep: #0f766e;--accent-glow: rgba(45, 212, 191, .12);--accent-rim: rgba(45, 212, 191, .04);--accent-ring: rgba(45, 212, 191, .1);--accent-border: rgba(45, 212, 191, .2);--text: #f0ede8;--text-secondary: #9996a0;--text-muted: #5c5968;--text-on-accent: #0d0d0f;--diff-easy: #10b981;--diff-easy-bg: rgba(16, 185, 129, .12);--diff-easy-border: rgba(16, 185, 129, .3);--diff-medium: #f59e0b;--diff-medium-bg: rgba(245, 158, 11, .12);--diff-medium-border: rgba(245, 158, 11, .3);--diff-hard: #f87171;--diff-hard-bg: rgba(248, 113, 113, .12);--diff-hard-border: rgba(248, 113, 113, .3);--danger: #ef4444;--danger-soft: #f87171;--danger-hover: #dc2626;--danger-active: #b91c1c;--danger-bg: rgba(239, 68, 68, .1);--font-display: "DM Serif Display", Georgia, serif;--font-body: "DM Sans", system-ui, -apple-system, sans-serif;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4), 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .5), 0 1px 4px rgba(0, 0, 0, .3);--shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);--shadow-accent: 0 4px 24px rgba(45, 212, 191, .15), 0 1px 4px rgba(45, 212, 191, .08);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-pill: 100px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--max-width: 1120px;--gutter: 40px;--ease-out: cubic-bezier(.16, 1, .3, 1);--dur-fast: .12s;--dur-base: .18s}@media(max-width:600px){:root{--gutter: 20px}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}#root{min-height:100vh}a{color:inherit;text-decoration:none}ul,ol{list-style:none}img,svg{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.app{min-height:100vh;display:flex;flex-direction:column}.page{flex:1;position:relative;padding:var(--space-16) 0 var(--space-16)}.page:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 80% 60% at 50% -10%,rgba(45,212,191,.05) 0%,transparent 70%);pointer-events:none;z-index:0}.page-inner{position:relative;z-index:1;max-width:var(--max-width);margin:0 auto;padding:0 var(--gutter)}.page-heading{font-family:var(--font-display);font-size:clamp(28px,4vw,40px);font-weight:400;line-height:1.2;letter-spacing:-.02em;color:var(--text)}.page-sub{font-size:15px;color:var(--text-secondary);line-height:1.7;margin-top:var(--space-2)}.eyebrow{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted)}.page-header{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--space-6);margin-bottom:var(--space-8);flex-wrap:wrap}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);font-family:var(--font-body);font-size:14px;font-weight:500;border-radius:var(--radius-sm);padding:10px 20px;cursor:pointer;border:1px solid transparent;white-space:nowrap;background:transparent;transition:transform var(--dur-fast) var(--ease-out),opacity var(--dur-fast) var(--ease-out),background-color var(--dur-fast) var(--ease-out),border-color var(--dur-fast) var(--ease-out),color var(--dur-fast) var(--ease-out)}.btn:disabled{cursor:not-allowed;background:var(--bg-elevated)!important;color:var(--text-muted)!important;border-color:var(--border)!important;box-shadow:none!important;transform:none!important}.btn-lg{font-size:15px;padding:13px 28px;border-radius:var(--radius-md)}.btn-sm{font-size:13px;padding:7px 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.req{color:var(--accent);margin-left:2px}.form-input,.form-select,.form-textarea{width:100%;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-family:var(--font-body);font-size:14px;padding:10px 14px;outline:none;transition:border-color var(--dur-fast) var(--ease-out),box-shadow var(--dur-fast) var(--ease-out)}.form-textarea{resize:vertical;min-height:96px;line-height:1.7}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-muted)}.form-input:hover:not(:disabled),.form-select:hover:not(:disabled),.form-textarea:hover:not(:disabled){border-color:var(--border-hover)}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px 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var(--ease-out)}.chip:hover{border-color:var(--border-hover);color:var(--text)}.chip[aria-pressed=true]{background:var(--accent-glow);border-color:var(--accent-border);color:var(--accent)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:var(--space-5);z-index:100;overflow-y:auto}.modal-card{width:100%;max-width:440px;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-10);box-shadow:var(--shadow-lg),0 0 0 1px var(--accent-rim) inset;margin:auto}.modal-card.modal-wide{max-width:640px}.modal-heading{font-family:var(--font-display);font-size:24px;font-weight:400;letter-spacing:-.02em;color:var(--text);margin-bottom:var(--space-2)}.modal-sub{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:var(--space-6)}.modal-body{margin-top:var(--space-6)}@media(max-width:600px){.modal-card{padding:var(--space-6)}}.card{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-md),0 0 0 1px var(--accent-rim) inset}.badge{display:inline-flex;align-items:center;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:var(--radius-pill);border:1px solid transparent;white-space:nowrap}.badge-easy{color:var(--diff-easy);background:var(--diff-easy-bg);border-color:var(--diff-easy-border)}.badge-medium{color:var(--diff-medium);background:var(--diff-medium-bg);border-color:var(--diff-medium-border)}.badge-hard{color:var(--diff-hard);background:var(--diff-hard-bg);border-color:var(--diff-hard-border)}.tag-chip{display:inline-flex;align-items:center;font-size:12px;font-weight:500;padding:3px 10px;border-radius:var(--radius-pill);background:var(--accent-glow);border:1px solid var(--accent-border);color:var(--accent);white-space:nowrap}.empty-state{text-align:center;padding:var(--space-16) var(--space-6);background:var(--bg-raised);border:1px solid var(--border-dim);border-radius:var(--radius-lg)}.empty-state-heading{font-family:var(--font-display);font-size:22px;font-weight:400;letter-spacing:-.01em;margin-bottom:var(--space-2)}.empty-state-sub{font-size:14px;color:var(--text-secondary);max-width:420px;margin:0 auto var(--space-6);line-height:1.7}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}.spinner-page{display:flex;align-items:center;justify-content:center;min-height:50vh}@keyframes spin{to{transform:rotate(360deg)}}
