@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@500;700;800&display=swap";@layer reset{*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow-x:hidden}button{cursor:pointer;background:0 0;border:none;font-family:inherit}}@layer base{html{scrollbar-gutter:stable;overflow-y:scroll}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);background-image:radial-gradient(at 0 0,#bae6fd73 0,#0000 50%),radial-gradient(at 100% 100%,#fed7aa59 0,#0000 50%);flex-direction:column;justify-content:flex-start;align-items:center;min-height:100vh;padding:.25rem 1rem 1.5rem;transition:background-color .3s,color .3s;display:flex;position:relative}#root{flex-grow:1;justify-content:center;width:100%;display:flex}h1{font-family:var(--font-heading);letter-spacing:-.05em;font-weight:800}a,button{outline-color:var(--accent);outline-offset:4px}button:focus-visible{outline:2px solid var(--accent)}}@layer theme{:root{--font-heading:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-primary:#f0f9ff;--bg-secondary:#e0f2fe;--text-primary:#0f172a;--text-secondary:#334155;--accent:#f97316;--accent-glow:#f973161f;--accent-light:#f973161a;--card-front-bg:#ffffffd9;--card-back-bg:#fdfeffe6;--border-color:#bae6fd99;--border-card:#fffc;--shadow-sm:0 2px 4px #0f172a05;--shadow-md:0 10px 25px -5px #1e293b0f, 0 8px 16px -6px #1e293b0f;--shadow-lg:0 20px 40px -15px #1e293b1f}:root[data-theme=dark]{--bg-primary:#070f1e;--bg-secondary:#0b172d;--text-primary:#f0f9ff;--text-secondary:#93c5fd;--accent:#fdba74;--accent-glow:#fdba7440;--accent-light:#fdba741f;--card-front-bg:#0f204280;--card-back-bg:#0b172f80;--border-color:#1e407c80;--border-card:#ffffff14;--shadow-sm:0 2px 4px #0000004d;--shadow-md:0 10px 25px -5px #00000080, 0 8px 16px -6px #00000080;--shadow-lg:0 30px 60px -15px #000000b3}:root:not([data-theme]){--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--bg-primary:var(--lightningcss-light,#f0f9ff)var(--lightningcss-dark,#070f1e);--bg-secondary:var(--lightningcss-light,#e0f2fe)var(--lightningcss-dark,#0b172d);--text-primary:var(--lightningcss-light,#0f172a)var(--lightningcss-dark,#f0f9ff);--text-secondary:var(--lightningcss-light,#334155)var(--lightningcss-dark,#93c5fd);--accent:var(--lightningcss-light,#f97316)var(--lightningcss-dark,#fdba74);--accent-glow:var(--lightningcss-light,#f973161f)var(--lightningcss-dark,#fdba7440);--accent-light:var(--lightningcss-light,#f973161a)var(--lightningcss-dark,#fdba741f);--card-front-bg:var(--lightningcss-light,#ffffffd9)var(--lightningcss-dark,#0f204280);--card-back-bg:var(--lightningcss-light,#fdfeffe6)var(--lightningcss-dark,#0b172f80);--border-color:var(--lightningcss-light,#bae6fd99)var(--lightningcss-dark,#1e407c80);--border-card:var(--lightningcss-light,#fffc)var(--lightningcss-dark,#ffffff14);--shadow-sm:var(--lightningcss-light,0 2px 4px #0f172a05)var(--lightningcss-dark,0 2px 4px #0000004d);--shadow-md:var(--lightningcss-light,0 10px 25px -5px #1e293b0f)var(--lightningcss-dark,0 10px 25px -5px #00000080);--shadow-lg:var(--lightningcss-light,0 20px 40px -15px #1e293b1f)var(--lightningcss-dark,0 30px 60px -15px #000000b3)}@media (prefers-color-scheme:dark){:root:not([data-theme]){--lightningcss-light: ;--lightningcss-dark:initial}}}@layer components{.app-container{flex-direction:column;flex-grow:1;gap:.75rem;width:100%;max-width:1400px;display:flex}.auth-banner{border-radius:12px;justify-content:center;align-items:center;gap:.75rem;padding:.85rem 1.25rem;font-size:.9rem;font-weight:500;animation:.2s ease-out fadeIn;display:flex}.auth-banner.loading{border:1px solid var(--accent);color:var(--text-primary);background:#f973161a}.auth-banner.error{color:#ef4444;background:#ef44441a;border:1px solid #ef4444}.spin-animation{animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}}@layer utilities{::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}::selection{background:var(--accent);color:#fff}.mermaid-chart{width:100%;margin-top:.25rem}.mermaid-chart svg{width:auto;max-width:100%;max-height:260px;margin:0 auto}}@media (width<=768px){.mermaid-chart svg{max-height:160px}}.login-page-container{flex:1;justify-content:center;align-items:center;width:100%;padding:1.5rem 1rem;animation:.25s ease-out fadeIn;display:flex}.login-card{background:var(--card-front-bg);border:1px solid var(--border-card);text-align:center;width:100%;max-width:420px;box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(20px);border-radius:24px;flex-direction:column;gap:1.5rem;padding:2.5rem 2rem;display:flex}.login-header{flex-direction:column;align-items:center;gap:.4rem;display:flex}.login-logo{margin-bottom:.5rem}.login-title{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.02em;font-size:1.65rem;font-weight:700}.login-subtitle{color:var(--text-secondary);font-size:.875rem;line-height:1.4}.login-status-box{text-align:left;border-radius:12px;align-items:center;gap:.75rem;padding:1rem 1.25rem;animation:.2s ease-out fadeIn;display:flex}.login-status-box.authenticating{border:1px solid var(--accent);color:var(--text-primary);background:#f9731614}.login-status-box.error{color:#ef4444;background:#ef444414;border:1px solid #ef4444}.status-title{font-size:.875rem;font-weight:700}.status-desc{color:var(--text-secondary);margin-top:.15rem;font-size:.775rem}.login-actions{flex-direction:column;gap:.75rem;display:flex}.login-portal-btn{background:var(--accent);color:#fff;border:1px solid var(--accent);width:100%;box-shadow:0 4px 14px var(--accent-glow);box-sizing:border-box;border-radius:12px;justify-content:center;align-items:center;gap:.65rem;padding:.85rem 1.25rem;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .2s;display:flex}.login-portal-btn:hover{box-shadow:0 6px 18px var(--accent-glow);opacity:.96}.login-footer{color:var(--text-secondary);justify-content:center;align-items:center;gap:.4rem;margin-top:.5rem;font-size:.75rem;display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (width<=480px){.login-card{padding:2rem 1.5rem}}.app-header{z-index:50;background:var(--card-front-bg);border:1px solid var(--border-card);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(20px);box-sizing:border-box;border-radius:20px;grid-template-columns:1fr minmax(auto,500px) 1fr;align-items:center;gap:1rem;width:100%;padding:.85rem 1.5rem;display:grid;position:sticky;top:.25rem}.app-header.no-center{grid-template-columns:1fr 1fr}.app-header-left{justify-content:flex-start;align-items:center;gap:1rem;min-width:0;display:flex}.app-header-brand{cursor:pointer;-webkit-user-select:none;user-select:none;flex-shrink:0;align-items:center;gap:.75rem;display:flex}.app-header-brand-name{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.03em;font-size:1.45rem;font-weight:800}.app-header-center{justify-content:center;align-items:center;width:100%;min-width:0;display:flex}.app-header-right{justify-content:flex-end;align-items:center;gap:.75rem;min-width:0;display:flex}.nav-back-deck-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;white-space:nowrap;border-radius:12px;align-items:center;gap:.5rem;padding:.55rem .95rem;font-size:.875rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.nav-back-deck-btn:hover{background:var(--border-color);color:var(--text-primary)}.auth-profile-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:9999px;align-items:center;gap:.6rem;padding:.35rem .85rem .35rem .35rem;font-size:.875rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex}.auth-profile-btn:hover{background:var(--card-front-bg);border-color:var(--accent);box-shadow:0 2px 8px var(--accent-glow)}.auth-profile-avatar{color:#fff;background:linear-gradient(135deg,#0ea5e9,#38bdf8);border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:.75rem;font-weight:800;display:flex;box-shadow:0 2px 5px #0ea5e94d}.auth-profile-name{white-space:nowrap;text-overflow:ellipsis;max-width:140px;overflow:hidden}.auth-role-tag{text-transform:uppercase;letter-spacing:.05em;color:#0284c7;background:#0ea5e926;border:1px solid #0ea5e94d;border-radius:6px;padding:.15rem .45rem;font-size:.7rem;font-weight:700}[data-theme=dark] .auth-role-tag{color:#38bdf8;background:#38bdf826;border-color:#38bdf84d}@media (width<=768px){.app-header-brand-name,.auth-profile-name{display:none}.app-header{gap:.5rem;padding:.65rem .85rem}}.theme-toggle-btn{width:40px;height:40px;color:var(--text-secondary);background:var(--card-front-bg);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;transition:all .2s;display:flex}.theme-toggle-btn:hover{color:var(--accent);border-color:var(--accent);background:var(--bg-secondary)}.profile-page-container{flex-direction:column;gap:2rem;width:100%;max-width:1360px;margin:0 auto;padding:.15rem 1rem 3rem;animation:.2s ease-out fadeIn;display:flex}.profile-main-layout{justify-content:center;width:100%;display:flex}.profile-card{background:var(--card-front-bg);border:1px solid var(--border-card);width:100%;max-width:480px;box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(20px);border-radius:24px;flex-direction:column;gap:1.75rem;padding:2.25rem;display:flex}.profile-card-header{align-items:center;gap:1.25rem;display:flex}.profile-hero-avatar{color:#fff;background:linear-gradient(135deg,#0ea5e9,#38bdf8);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:64px;height:64px;font-size:1.5rem;font-weight:800;display:flex;box-shadow:0 4px 14px #0ea5e959}.profile-hero-info{flex-direction:column;gap:.35rem;min-width:0;display:flex}.profile-name{color:var(--text-primary);letter-spacing:-.02em;margin:0;font-size:1.35rem;font-weight:800}.profile-meta-row{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.profile-badge-role{text-transform:uppercase;letter-spacing:.05em;color:#0284c7;background:#0ea5e926;border:1px solid #0ea5e94d;border-radius:9999px;padding:.15rem .55rem;font-size:.725rem;font-weight:700}[data-theme=dark] .profile-badge-role{color:#38bdf8;background:#38bdf826;border-color:#38bdf84d}.profile-badge-status{color:#10b981;background:#10b9811f;border:1px solid #10b98140;border-radius:9999px;padding:.15rem .55rem;font-size:.75rem;font-weight:600}.profile-body-section{border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);padding:1.25rem 0}.profile-info-grid{flex-direction:column;gap:1.15rem;display:flex}.profile-info-item{flex-direction:column;gap:.25rem;display:flex}.info-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em;font-size:.8rem;font-weight:600}.info-value{color:var(--text-primary);align-items:center;gap:.5rem;font-size:.95rem;font-weight:600;display:flex}.info-value.capitalize{text-transform:capitalize}.theme-preference-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:14px;flex-direction:row;justify-content:space-between;align-items:center;padding:.85rem 1rem;display:flex}.theme-preference-text{flex-direction:column;gap:.25rem;display:flex}.theme-mode-label{color:var(--text-primary);align-items:center;gap:.45rem;font-size:.95rem;font-weight:600;display:flex}.theme-mode-icon{color:var(--accent)}.profile-footer-actions{justify-content:flex-end;display:flex}.btn-profile-logout{color:#ef4444;cursor:pointer;background:#ef444414;border:1px solid #ef444440;border-radius:12px;justify-content:center;align-items:center;gap:.55rem;width:100%;height:42px;font-size:.925rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-profile-logout:hover{color:#fff;background:#ef4444;border-color:#ef4444;box-shadow:0 4px 14px #ef444440}.deck-hub-container{flex-direction:column;gap:1.5rem;width:100%;max-width:1360px;margin:0 auto;padding:.15rem 1rem 3rem;animation:.2s ease-out fadeIn;display:flex}.deck-header-search-wrapper{width:100%;position:relative}.deck-header-search-wrapper .deck-search-icon{color:var(--text-secondary);pointer-events:none;position:absolute;top:50%;left:1.1rem;transform:translateY(-50%)}.deck-header-search-input{background:var(--bg-secondary);border:1px solid var(--border-color);width:100%;color:var(--text-primary);box-sizing:border-box;border-radius:12px;outline:none;padding:.65rem 2.4rem .65rem 2.6rem;font-size:.9rem;transition:all .2s}.deck-header-search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--card-front-bg)}.deck-header-search-wrapper .deck-search-clear{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:.2rem .4rem;font-size:.85rem;position:absolute;top:50%;right:.75rem;transform:translateY(-50%)}.hub-group-pill{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--accent);text-transform:capitalize;letter-spacing:.02em;white-space:nowrap;border-radius:9999px;align-items:center;gap:.4rem;padding:.35rem .75rem;font-size:.8rem;font-weight:700;display:inline-flex}.create-deck-header-btn{background:var(--accent);color:#fff;border:1px solid var(--accent);cursor:pointer;height:42px;box-shadow:0 2px 8px var(--accent-glow);white-space:nowrap;border-radius:12px;align-items:center;gap:.45rem;padding:0 1.25rem;font-size:.875rem;font-weight:700;transition:all .2s;display:inline-flex}.create-deck-header-btn:hover{box-shadow:0 4px 14px var(--accent-glow)}.decks-table-wrapper{background:var(--card-front-bg);border:1px solid var(--border-card);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(16px);border-radius:20px;overflow:hidden}.decks-table{border-collapse:collapse;text-align:left;width:100%}.decks-table th{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);border-bottom:1px solid var(--border-color);background:#00000005;padding:1.1rem 1.4rem;font-size:.75rem;font-weight:700}.col-deck-name{width:auto}.col-deck-cards{text-align:center;width:140px}.col-deck-actions{text-align:right;width:220px}.decks-table-row{cursor:pointer;border-bottom:1px solid var(--border-color);transition:background .15s}.decks-table-row:last-child{border-bottom:none}.decks-table-row:hover{background:#0ea5e90a}[data-theme=dark] .decks-table-row:hover{background:#38bdf80d}.decks-table td{vertical-align:middle;padding:1.15rem 1.4rem}.cell-deck-info{width:auto}.deck-info-primary{flex-direction:column;gap:.25rem;display:flex}.deck-row-title{color:var(--text-primary);letter-spacing:-.01em;font-size:1.1rem;font-weight:700}.deck-row-desc{color:var(--text-secondary);-webkit-line-clamp:1;-webkit-box-orient:vertical;font-size:.85rem;line-height:1.4;display:-webkit-box;overflow:hidden}.cell-deck-cards{text-align:center}.deck-card-count-pill{color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border-color);white-space:nowrap;border-radius:9999px;justify-content:center;align-items:center;padding:.35rem .85rem;font-size:.8rem;font-weight:600;display:inline-flex}.cell-deck-actions{text-align:right}.deck-row-actions{justify-content:flex-end;align-items:center;gap:.6rem;display:inline-flex}.btn-row-action{cursor:pointer;white-space:nowrap;border-radius:10px;justify-content:center;align-items:center;gap:.45rem;height:38px;padding:0 1rem;font-size:.85rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-row-action.btn-row-study{background:var(--accent);color:#fff;border:1px solid var(--accent);box-shadow:0 2px 8px var(--accent-glow)}.btn-row-action.btn-row-study:hover{box-shadow:0 4px 14px var(--accent-glow)}.btn-row-action.btn-row-export{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);padding:0 .85rem}.btn-row-action.btn-row-export:hover{background:var(--card-front-bg);border-color:var(--accent);color:var(--accent);box-shadow:0 2px 8px var(--accent-glow)}.btn-row-action.btn-row-delete{color:#ef4444;background:#ef444414;border:1px solid #ef444440;padding:0 .85rem}.btn-row-action.btn-row-delete:hover{color:#fff;background:#ef4444;border-color:#ef4444;box-shadow:0 4px 12px #ef44444d}.empty-hub-state{background:var(--card-front-bg);border:1px dashed var(--border-color);text-align:center;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:1rem;margin-top:1rem;padding:4rem 2rem;display:flex}.empty-icon{color:var(--accent);opacity:.8}.empty-hub-state h2{color:var(--text-primary);margin:0;font-size:1.4rem;font-weight:800}.empty-hub-state p{color:var(--text-secondary);max-width:400px;margin:0;font-size:.95rem}.btn-hub-primary{background:var(--accent);color:#fff;border:1px solid var(--accent);cursor:pointer;height:42px;box-shadow:0 4px 14px var(--accent-glow);border-radius:12px;align-items:center;gap:.5rem;margin-top:.5rem;padding:0 1.4rem;font-size:.95rem;font-weight:700;display:inline-flex}.delete-modal-overlay{-webkit-backdrop-filter:blur(8px);z-index:1000;background:#000000a6;justify-content:center;align-items:center;padding:1rem;animation:.15s ease-out fadeIn;display:flex;position:fixed;inset:0}.delete-modal-card{background:var(--card-front-bg);border:1px solid var(--border-card);width:100%;max-width:440px;box-shadow:var(--shadow-lg);border-radius:20px;flex-direction:column;gap:1.25rem;padding:1.75rem;animation:.15s ease-out fadeIn;display:flex}.delete-modal-header{align-items:center;gap:1rem;display:flex}.delete-modal-icon-badge{color:#ef4444;background:#ef44441f;border:1px solid #ef444440;border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:46px;height:46px;display:flex}.delete-modal-title-group{flex-direction:column;gap:.15rem;display:flex}.delete-modal-title{color:var(--text-primary);margin:0;font-size:1.15rem;font-weight:800}.delete-modal-subtitle{text-transform:uppercase;letter-spacing:.05em;color:#ef4444;margin:0;font-size:.75rem;font-weight:700}.delete-modal-body{color:var(--text-secondary);font-size:.925rem;line-height:1.5}.delete-modal-body strong{color:var(--text-primary)}.delete-modal-footer{justify-content:flex-end;align-items:center;gap:.75rem;margin-top:.5rem;display:flex}.btn-cancel-delete{background:var(--bg-secondary);border:1px solid var(--border-color);height:42px;color:var(--text-primary);cursor:pointer;border-radius:12px;padding:0 1.2rem;font-size:.875rem;font-weight:600;transition:all .2s}.btn-cancel-delete:hover{background:var(--border-color)}.btn-confirm-delete{color:#fff;cursor:pointer;background:#ef4444;border:1px solid #ef4444;border-radius:12px;align-items:center;gap:.45rem;height:42px;padding:0 1.25rem;font-size:.875rem;font-weight:700;transition:all .2s;display:inline-flex;box-shadow:0 4px 14px #ef444459}.btn-confirm-delete:hover{background:#dc2626;border-color:#dc2626}@media (width<=640px){.col-deck-cards,.cell-deck-cards{display:none}.decks-table th,.decks-table td{padding:.85rem 1rem}.btn-row-action span{display:none}.btn-row-action{padding:0 .65rem}}.create-deck-page-container{flex-direction:column;gap:2rem;width:100%;max-width:1360px;margin:0 auto;padding:.15rem 1rem 3.5rem;animation:.25s ease-out fadeIn;display:flex}.create-deck-main-layout{justify-content:center;width:100%;display:flex}.create-deck-card{background:var(--card-front-bg);border:1px solid var(--border-card);width:100%;max-width:640px;box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(20px);border-radius:24px;flex-direction:column;gap:1.5rem;padding:2.25rem;display:flex}.create-deck-card-header{flex-direction:column;gap:.35rem;display:flex}.create-page-heading{color:var(--text-primary);letter-spacing:-.025em;margin:0;font-size:1.65rem;font-weight:800}.create-page-subheading{color:var(--text-secondary);margin:0;font-size:.9rem;line-height:1.4}.create-form-error{color:#ef4444;background:#ef44441a;border:1px solid #ef4444;border-radius:14px;padding:.85rem 1.15rem;font-size:.9rem;font-weight:600}.create-full-form{flex-direction:column;gap:1.35rem;display:flex}.form-group{flex-direction:column;gap:.45rem;display:flex}.field-label-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;display:flex}.label-with-badge{align-items:center;gap:.6rem;display:flex}.field-label{color:var(--text-primary);align-items:center;gap:.4rem;font-size:.9rem;font-weight:700;display:flex}.field-label .req{color:#ef4444}.field-subhint{color:var(--text-secondary);margin:0 0 .15rem;font-size:.8rem;line-height:1.4}.field-subhint code{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:5px;padding:.1rem .35rem;font-size:.775rem;font-weight:600}.btn-upload-trigger{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;border-radius:10px;align-items:center;gap:.4rem;padding:.4rem .8rem;font-size:.825rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-upload-trigger:hover{border-color:var(--accent);color:var(--accent);background:var(--card-front-bg)}.csv-drop-zone.dragging .expanded-csv-textarea{border-color:var(--accent);background:var(--accent-light);box-shadow:0 0 0 3px var(--accent-glow)}.parsed-count-pill{color:#10b981;background:#10b9811f;border:1px solid #10b98140;border-radius:9999px;padding:.15rem .55rem;font-size:.75rem;font-weight:700}.field-input,.field-textarea{background:var(--bg-secondary);border:1px solid var(--border-color);width:100%;color:var(--text-primary);box-sizing:border-box;border-radius:14px;outline:none;padding:.85rem 1.1rem;font-size:.95rem;transition:all .2s}.field-input.title-input{font-size:1.05rem;font-weight:600}.field-input:focus,.field-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--card-front-bg)}.field-textarea.code-area{background:var(--bg-secondary);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.85rem;line-height:1.5}.field-textarea.expanded-csv-textarea{resize:vertical;min-height:160px}.create-form-actions{border-top:1px solid var(--border-color);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.85rem;margin-top:.25rem;padding-top:1.25rem;display:flex}.action-buttons-right{align-items:center;gap:.75rem;display:flex}.btn-form-action{cursor:pointer;white-space:nowrap;box-sizing:border-box;border-radius:12px;justify-content:center;align-items:center;gap:.5rem;height:42px;padding:0 1.25rem;font-size:.9rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-form-secondary{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary)}.btn-form-secondary:hover{border-color:var(--accent);color:var(--accent);background:var(--card-front-bg)}.btn-form-cancel{border:1px solid var(--border-color);color:var(--text-secondary);background:0 0}.btn-form-cancel:hover{background:var(--bg-secondary);color:var(--text-primary)}.btn-form-submit{background:var(--accent);color:#fff;border:1px solid var(--accent);box-shadow:0 4px 14px var(--accent-glow);font-weight:700}.btn-form-submit:hover:not(:disabled){box-shadow:0 6px 20px var(--accent-glow)}.btn-form-submit:disabled{opacity:.5;cursor:not-allowed}.permission-denied-card{text-align:center;align-items:center;gap:1.25rem}.permission-denied-icon{color:#ef4444;background:#ef44441a;border:1px solid #ef444440;border-radius:20px;justify-content:center;align-items:center;width:72px;height:72px;display:flex}@media (width<=640px){.create-deck-card{padding:1.75rem 1.25rem}.create-form-actions{flex-direction:column;align-items:stretch}.action-buttons-right{gap:.75rem;display:flex}.btn-form-action{flex:1}}.flashcard-wrapper{perspective:1200px;justify-content:center;align-items:center;width:100%;max-width:680px;height:420px;margin:0 auto;display:flex}.flashcard{width:100%;height:100%;transform-style:preserve-3d;cursor:pointer;border-radius:24px;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.flipped{transform:rotateY(180deg)}.card-face{backface-visibility:hidden;border:1px solid var(--border-card);-webkit-backdrop-filter:blur(16px);width:100%;height:100%;box-shadow:var(--shadow-lg);-webkit-user-select:none;user-select:none;box-sizing:border-box;border-radius:24px;flex-direction:column;justify-content:space-between;padding:2rem 2.25rem;display:flex;position:absolute;top:0;left:0;overflow:hidden}.card-face-front{background:var(--card-front-bg);z-index:2}.card-face-back{background:var(--card-back-bg);z-index:1;transform:rotateY(180deg)}.card-meta{justify-content:space-between;align-items:center;gap:.5rem;width:100%;display:flex}.card-tag{text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);border:1px solid var(--border-color);background:#94a3b826;border-radius:9999px;padding:.35rem .85rem;font-size:.78rem;font-weight:600}.card-tag.deep-learning{color:var(--color-tag-dl);background:#ea580c1f;border-color:#ea580c40}.card-tag.machine-learning{color:var(--color-tag-ml);background:#0284c71f;border-color:#0284c740}.card-tag.optimization{color:var(--color-tag-opt);background:#d977061f;border-color:#d9770640}.card-tag.generative{color:var(--color-tag-gen);background:#10b9811f;border-color:#10b98140}.btn-hint-badge{color:var(--text-secondary);background:var(--bg-secondary);border:1px solid var(--border-color);cursor:pointer;border-radius:9999px;align-items:center;gap:.35rem;padding:.3rem .75rem;font-size:.78rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-hint-badge:hover,.btn-hint-badge.active{color:#f59e0b;background:#f59e0b1f;border-color:#f59e0b66}.diagram-indicator-btn{color:var(--accent);cursor:pointer;background:#6366f11a;border:1px solid #6366f140;border-radius:9999px;align-items:center;gap:.35rem;padding:.3rem .75rem;font-size:.78rem;font-weight:600;transition:all .2s;display:inline-flex}.diagram-indicator-btn:hover{background:var(--accent);color:#fff}.card-body{text-align:center;box-sizing:border-box;flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;padding:1.25rem .5rem;display:flex}.card-front-body{gap:1.25rem}.card-back-body{justify-content:center;gap:1rem;overflow-y:auto}.card-term{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.02em;word-break:break-word;max-width:100%;font-size:2.25rem;font-weight:800;line-height:1.3}.card-hint{background:var(--bg-secondary);border:1px solid var(--border-color);max-width:88%;box-shadow:var(--shadow-sm);border-radius:12px;justify-content:center;align-items:center;gap:.5rem;padding:.55rem 1.1rem;animation:.2s ease-out fadeIn;display:inline-flex}.hint-label{text-transform:uppercase;letter-spacing:.05em;color:var(--accent);font-size:.78rem;font-weight:700}.hint-text{color:var(--text-primary);font-size:.95rem;font-weight:500;line-height:1.45}.card-definition{color:var(--text-primary);word-break:break-word;max-width:100%;font-size:1.2rem;font-weight:500;line-height:1.65}.card-details-box{background:var(--bg-secondary);border:1px solid var(--border-color);text-align:left;box-sizing:border-box;border-radius:10px;width:100%;padding:.75rem 1rem}.details-header{text-transform:uppercase;color:var(--text-secondary);margin-bottom:.25rem;font-size:.75rem;font-weight:700}.details-text{color:var(--text-primary);font-size:.9rem;line-height:1.5}.card-links{text-align:left;flex-direction:column;gap:.35rem;width:100%;display:flex}.links-label{text-transform:uppercase;color:var(--text-secondary);font-size:.75rem;font-weight:700}.links-list{flex-wrap:wrap;gap:.5rem;display:flex}.reference-link{color:var(--accent);background:#6366f114;border:1px solid #6366f133;border-radius:6px;align-items:center;gap:.35rem;padding:.25rem .6rem;font-size:.8rem;font-weight:600;text-decoration:none;display:inline-flex}.reference-link:hover{background:var(--accent);color:#fff}.card-footer{justify-content:center;align-items:center;width:100%;display:flex}.footer-action-badge{color:var(--text-secondary);opacity:.8;font-size:.8rem;font-weight:600}.footer-action-badge.diagram-badge{color:var(--accent);opacity:1}.empty-flashcard-face{text-align:center;gap:1rem;justify-content:center!important;align-items:center!important}.empty-card-icon{background:var(--bg-secondary);border:1px solid var(--border-color);width:72px;height:72px;color:var(--accent);border-radius:20px;justify-content:center;align-items:center;margin-bottom:.25rem;display:flex}.empty-card-spinner{border:3px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;width:44px;height:44px;margin-bottom:.5rem;animation:.8s linear infinite spin}.empty-card-title{font-family:var(--font-heading);color:var(--text-primary);letter-spacing:-.02em;margin:0;font-size:1.5rem;font-weight:800}.empty-card-desc{color:var(--text-secondary);max-width:380px;margin:0;font-size:.925rem;line-height:1.5}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=640px){.flashcard-wrapper{height:380px}.card-face{padding:1.5rem}.card-term{font-size:1.8rem}.card-definition{font-size:1rem}}.diagram-takeover-overlay{-webkit-backdrop-filter:blur(8px);z-index:1000;background:#000000a6;justify-content:center;align-items:center;padding:1.5rem;display:flex;position:fixed;inset:0}.diagram-takeover-card{background:var(--card-front-bg);border:1px solid var(--border-card);width:100%;max-width:960px;height:80vh;max-height:700px;box-shadow:var(--shadow-xl);border-radius:20px;flex-direction:column;display:flex;overflow:hidden}.diagram-takeover-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.25rem 1.75rem;display:flex}.diagram-takeover-title-group{flex-direction:column;gap:.2rem;display:flex}.diagram-takeover-tag{text-transform:uppercase;color:var(--accent);font-size:.75rem;font-weight:700}.diagram-takeover-title{color:var(--text-primary);margin:0;font-size:1.25rem;font-weight:800}.btn-close-diagram{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:.9rem;transition:all .2s;display:flex}.btn-close-diagram:hover{color:#fff;background:#ef4444;border-color:#ef4444}.diagram-canvas-area{cursor:grab;-webkit-user-select:none;user-select:none;background:var(--bg-primary);flex:1;justify-content:center;align-items:center;display:flex;overflow:hidden}.diagram-canvas-area.is-dragging{cursor:grabbing}.diagram-scalable-content{justify-content:center;align-items:center;padding:2rem;display:flex}.diagram-takeover-footer{border-top:1px solid var(--border-color);background:var(--bg-secondary);justify-content:space-between;align-items:center;padding:.85rem 1.75rem;display:flex}.diagram-zoom-controls{align-items:center;gap:.5rem;display:flex}.btn-zoom-ctrl{background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;border-radius:8px;height:30px;padding:0 .65rem;font-size:.85rem;font-weight:700;transition:all .2s}.btn-zoom-ctrl:hover{border-color:var(--accent);color:var(--accent)}.diagram-canvas-hint{color:var(--text-secondary);font-size:.78rem}.search-container{z-index:50;width:100%;max-width:440px;position:relative}.search-input-wrapper{align-items:center;display:flex;position:relative}.search-icon{color:var(--text-secondary);pointer-events:none;position:absolute;left:1rem}.search-input{background:var(--card-front-bg);border:1px solid var(--border-color);width:100%;height:42px;color:var(--text-primary);font-family:var(--font-body);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:12px;outline:none;padding:0 2.5rem 0 2.75rem;font-size:.9rem;transition:all .2s}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--bg-primary)}.search-clear-btn{color:var(--text-secondary);border-radius:6px;justify-content:center;align-items:center;padding:4px;display:flex;position:absolute;right:.75rem}.search-clear-btn:hover{color:var(--text-primary);background:#0000000d}.search-results{background:var(--bg-secondary);border:1px solid var(--border-color);width:100%;max-height:380px;box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:100;border-radius:16px;animation:.15s ease-out fadeIn;position:absolute;top:calc(100% + 8px);left:0;overflow-y:auto}.search-results-list{margin:0;padding:.5rem;list-style:none}.search-result-item{text-align:left;border-radius:10px;flex-direction:column;gap:.25rem;width:100%;padding:.75rem 1rem;transition:background .15s;display:flex}.search-result-item:hover,.search-result-item.active{background:#f9731614}.result-term-row{justify-content:space-between;align-items:center;gap:.5rem;display:flex}.result-term-group{align-items:center;gap:.5rem;display:flex}.result-index{color:var(--text-secondary);opacity:.7;font-size:.75rem;font-weight:700}.result-term{font-family:var(--font-heading);color:var(--text-primary);font-size:.95rem;font-weight:700}.result-badges{align-items:center;gap:.35rem;display:flex}.result-badge{border-radius:4px;align-items:center;gap:.2rem;padding:.15rem .4rem;font-size:.65rem;font-weight:600;display:flex}.diagram-badge{color:var(--color-tag-ml);background:#0284c71f}.hint-badge{color:var(--color-tag-opt);background:#d977061f}.result-category{color:var(--text-secondary);opacity:.8;font-size:.7rem}.result-definition{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:.8rem;line-height:1.4;overflow:hidden}.search-no-results{text-align:center;color:var(--text-secondary);padding:1.5rem;font-size:.85rem}.active-deck-badge-header{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-primary);white-space:nowrap;border-radius:12px;flex-shrink:0;align-items:center;gap:.45rem;max-width:200px;padding:.45rem .85rem;font-size:.85rem;font-weight:700;display:inline-flex}.deck-badge-title{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.nav-view-btn{background:var(--bg-secondary);border:1px solid var(--border-color);height:38px;color:var(--text-primary);box-shadow:var(--shadow-sm);cursor:pointer;white-space:nowrap;border-radius:12px;align-items:center;gap:.45rem;padding:0 1rem;font-size:.85rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.nav-view-btn:hover:not(:disabled){background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 4px 12px var(--accent-glow)}.nav-view-btn:disabled{opacity:.4;cursor:not-allowed}.nav-view-btn.btn-danger-action:hover:not(:disabled){color:#fff;background:#ef4444;border-color:#ef4444;box-shadow:0 4px 14px #ef44444d}.app-layout{flex-direction:column;flex-grow:1;align-items:center;width:100%;display:flex}.study-area{flex-direction:column;flex-grow:1;justify-content:center;gap:1.5rem;width:100%;display:flex}.study-arena{flex-grow:1;justify-content:center;align-items:center;gap:1.5rem;width:100%;display:flex}.nav-btn-inline{background:var(--card-front-bg);border:1px solid var(--border-card);width:56px;height:56px;color:var(--text-primary);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(8px);cursor:pointer;border-radius:50%;flex:0 0 56px;justify-content:center;align-items:center;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex}.nav-btn-inline:hover:not(:disabled){background:var(--accent);color:#fff;box-shadow:0 8px 20px var(--accent-glow);border-color:var(--accent)}.nav-btn-inline:disabled{opacity:.3;cursor:not-allowed;box-shadow:none;transform:none}.shortcuts-footer{flex-direction:column;align-items:center;gap:1rem;width:100%;max-width:680px;margin-top:1.25rem;margin-left:auto;margin-right:auto;display:flex}.progress-pips{flex-wrap:wrap;justify-content:center;align-items:center;gap:.4rem;max-width:100%;display:flex}.progress-pip{background:var(--border-color);cursor:pointer;border:none;border-radius:9999px;width:8px;height:8px;padding:0;transition:all .2s}.progress-pip:hover{background:var(--text-secondary)}.progress-pip.active{background:var(--accent);width:22px;box-shadow:0 0 8px var(--accent-glow)}.progress-pip.visited:not(.active){background:var(--accent);opacity:.45}.shortcuts-hint{background:var(--card-front-bg);border:1px solid var(--border-card);box-shadow:var(--shadow-sm);border-radius:14px;flex-wrap:wrap;justify-content:center;align-items:center;gap:.75rem;padding:.5rem 1.1rem;display:flex}.shortcut-item{color:var(--text-secondary);align-items:center;gap:.4rem;font-size:.8rem;font-weight:500;display:inline-flex}.shortcut-item kbd{min-width:22px;height:22px;color:var(--text-primary);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:6px;justify-content:center;align-items:center;padding:0 .45rem;font-family:inherit;font-size:.725rem;font-weight:700;display:inline-flex;box-shadow:0 1px 2px #00000014}.shortcut-divider{color:var(--border-color);opacity:.6}@media (width<=768px){.active-deck-badge-header{display:none}}@media (width<=600px){.study-arena{gap:.75rem}.nav-btn-inline{width:44px;height:44px}}.termlist-container{flex-direction:column;gap:1.5rem;width:100%;max-width:1360px;margin:0 auto;padding:.5rem 1.5rem 3rem;animation:.2s ease-out fadeIn;display:flex}.termlist-export-btn{background:var(--bg-secondary);border:1px solid var(--border-color);height:42px;color:var(--text-primary);cursor:pointer;white-space:nowrap;border-radius:12px;align-items:center;gap:.45rem;padding:0 1.1rem;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-flex}.termlist-export-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.termlist-export-btn:disabled{opacity:.4;cursor:not-allowed}.termlist-table-wrapper{background:var(--card-front-bg);border:1px solid var(--border-color);box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:18px;overflow:hidden}.termlist-table{border-collapse:collapse;text-align:left;width:100%}.termlist-table th{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);border-bottom:1px solid var(--border-color);background:#00000005;padding:1rem 1.25rem;font-size:.75rem;font-weight:700}.termlist-row{cursor:pointer;border-bottom:1px solid var(--border-color);transition:background .15s}.termlist-row:last-child{border-bottom:none}.termlist-row:hover{background:#f973160a}.termlist-table td{vertical-align:middle;padding:1rem 1.25rem;font-size:.9rem}.col-num{text-align:center;width:50px}.col-term{width:220px}.col-category{width:160px}.col-definition{width:auto}.cell-num{color:var(--text-secondary);text-align:center;opacity:.7;font-size:.8rem;font-weight:700}.term-text{font-family:var(--font-heading);color:var(--text-primary);font-weight:700}.definition-text{color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.5;display:-webkit-box;overflow:hidden}.termlist-empty{text-align:center;color:var(--text-secondary);background:var(--card-front-bg);border:1px solid var(--border-color);border-radius:18px;padding:3rem 1.5rem}.termlist-modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:200;background:#0009;justify-content:center;align-items:center;width:100vw;height:100vh;padding:1.5rem;animation:.15s ease-out fadeIn;display:flex;position:fixed;top:0;left:0}.termlist-modal{background:var(--bg-secondary);border:1px solid var(--border-color);width:100%;max-width:620px;max-height:85vh;box-shadow:var(--shadow-lg);border-radius:24px;flex-direction:column;animation:.2s ease-out scaleUp;display:flex;overflow:hidden}.termlist-modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1.25rem 1.75rem;display:flex}.termlist-modal-close{width:32px;height:32px;color:var(--text-secondary);border-radius:8px;justify-content:center;align-items:center;transition:all .15s;display:flex}.termlist-modal-close:hover{color:var(--text-primary);background:#0000000d}.termlist-modal-body{flex-direction:column;gap:1.25rem;padding:1.75rem;display:flex;overflow-y:auto}.termlist-modal-term{font-family:var(--font-heading);color:var(--text-primary);font-size:1.85rem;font-weight:800;line-height:1.2}.termlist-modal-section h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:.5rem;font-size:.8rem;font-weight:700}.termlist-modal-definition{color:var(--text-primary);font-size:1rem;line-height:1.6}.termlist-modal-links-list{flex-direction:column;gap:.5rem;display:flex}.termlist-modal-link{color:var(--accent);align-items:center;gap:.4rem;font-size:.85rem;font-weight:600;text-decoration:none;display:inline-flex}.termlist-modal-link:hover{text-decoration:underline}.termlist-modal-diagram-container{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;justify-content:center;padding:1rem;display:flex}.termlist-modal-footer{border-top:1px solid var(--border-color);justify-content:flex-end;padding:1.25rem 1.75rem;display:flex}.termlist-study-card-btn{background:var(--accent);color:#fff;border-radius:12px;padding:.7rem 1.25rem;font-size:.875rem;font-weight:700;transition:opacity .15s}.termlist-study-card-btn:hover{opacity:.9}@keyframes scaleUp{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}@media (width<=768px){.col-category{display:none}.col-term{width:140px}}