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(prefers-color-scheme:dark){:root:not([data-theme=light]){--md-sys-color-primary:#aac7ff;--md-sys-color-surface-tint:#aac7ff;--md-sys-color-on-primary:#0a305f;--md-sys-color-primary-container:#284777;--md-sys-color-on-primary-container:#d6e3ff;--md-sys-color-secondary:#bec6dc;--md-sys-color-on-secondary:#283141;--md-sys-color-secondary-container:#3e4759;--md-sys-color-on-secondary-container:#dae2f9;--md-sys-color-tertiary:#8ad0ee;--md-sys-color-on-tertiary:#003545;--md-sys-color-tertiary-container:#004d62;--md-sys-color-on-tertiary-container:#bbe9ff;--md-sys-color-error:#ffb4ab;--md-sys-color-on-error:#690005;--md-sys-color-error-container:#93000a;--md-sys-color-on-error-container:#ffdad6;--md-sys-color-background:#111318;--md-sys-color-on-background:#e2e2e9;--md-sys-color-surface:#111318;--md-sys-color-on-surface:#e2e2e9;--md-sys-color-surface-variant:#44474e;--md-sys-color-on-surface-variant:#c4c6d0;--md-sys-color-outline:#8e9099;--md-sys-color-outline-variant:#44474e;--md-sys-color-shadow:#000;--md-sys-color-scrim:#000;--md-sys-color-inverse-surface:#e2e2e9;--md-sys-color-inverse-on-surface:#2e3036;--md-sys-color-inverse-primary:#415f91;--md-sys-color-primary-fixed:#d6e3ff;--md-sys-color-on-primary-fixed:#001b3e;--md-sys-color-primary-fixed-dim:#aac7ff;--md-sys-color-on-primary-fixed-variant:#284777;--md-sys-color-secondary-fixed:#dae2f9;--md-sys-color-on-secondary-fixed:#131c2b;--md-sys-color-secondary-fixed-dim:#bec6dc;--md-sys-color-on-secondary-fixed-variant:#3e4759;--md-sys-color-tertiary-fixed:#bbe9ff;--md-sys-color-on-tertiary-fixed:#001f29;--md-sys-color-tertiary-fixed-dim:#8ad0ee;--md-sys-color-on-tertiary-fixed-variant:#004d62;--md-sys-color-surface-dim:#111318;--md-sys-color-surface-bright:#37393e;--md-sys-color-surface-container-lowest:#0c0e13;--md-sys-color-surface-container-low:#191c20;--md-sys-color-surface-container:#1d2024;--md-sys-color-surface-container-high:#282a2f;--md-sys-color-surface-container-highest:#33353a;--text:var(--md-sys-color-on-surface-variant);--text-h:var(--md-sys-color-on-surface);--bg:var(--md-sys-color-background);--color-surface:var(--md-sys-color-surface);--border:var(--md-sys-color-outline-variant);--code-bg:var(--md-sys-color-surface-variant);--accent:var(--md-sys-color-primary);--accent-bg:color-mix(in srgb, var(--md-sys-color-primary), transparent 90%);--accent-border:color-mix(in srgb, var(--md-sys-color-primary), transparent 50%);--social-bg:color-mix(in srgb, var(--md-sys-color-surface-variant), transparent 50%);--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px;--color-primary:var(--md-sys-color-primary);--color-primary-text:var(--md-sys-color-on-primary);--color-error:var(--md-sys-color-error);--color-error-bg:var(--md-sys-color-error-container);--color-error-text:var(--md-sys-color-on-error-container);--color-success:#4ade80;--color-success-bg:#064e3b;--color-success-text:#a7f3d0;--color-warning-bg:#452100;--color-warning-text:#ffb776}#social 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0;display:none}@media (width>=769px){.sidebar{display:flex}}.bottom-nav{background-color:var(--md-sys-color-surface-container);border-top:1px solid var(--md-sys-color-outline-variant);flex-shrink:0;justify-content:space-around;align-items:center;height:80px;padding:0 8px;display:flex}.bottom-nav.hidden{display:none}@media (width>=769px){.bottom-nav{display:none}}.nav-item{color:var(--md-sys-color-on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;min-width:64px;height:56px;padding:0;font-family:inherit;transition:background-color .2s,color .2s;display:flex}.nav-item:hover{color:var(--md-sys-color-on-surface);background-color:color-mix(in srgb, var(--md-sys-color-on-surface-variant) 12%, transparent)}.sidebar .nav-item{width:64px;height:64px;margin-bottom:8px}.nav-icon-wrapper{border-radius:16px;justify-content:center;align-items:center;width:64px;height:32px;transition:background-color 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.snackbar-action{color:#2e7d32}.confirmation-dialog{--md-dialog-container-color:var(--md-sys-color-surface-container-high);--md-dialog-headline-color:var(--md-sys-color-on-surface);--md-dialog-content-color:var(--md-sys-color-on-surface-variant);--md-dialog-container-shape:28px;max-width:400px}.confirmation-headline{text-align:left;padding-top:24px;padding-left:24px;font-size:24px;font-weight:400}.confirmation-content{text-align:left;color:var(--md-sys-color-on-surface-variant);padding:16px 24px;font-size:14px;line-height:1.5}.confirmation-actions{justify-content:flex-end;gap:8px;padding:0 16px 16px;display:flex}.dashboard-error-banner{background-color:var(--color-error-bg);color:var(--color-error-text);border-radius:8px;align-items:center;gap:12px;margin-bottom:16px;padding:8px 16px;font-weight:700;display:flex}.dashboard-error-icon{color:var(--color-error-text)}.dashboard-error-text{font-size:14px}.dashboard-search-container{align-items:center;gap:8px;margin-bottom:24px;display:flex}.dashboard-search-input{flex:1}.dashboard-empty-state-dashed{text-align:center;border:2px dashed var(--color-border);border-radius:16px;padding:64px}.dashboard-empty-state{text-align:center;padding:64px}.dashboard-packs-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-bottom:48px;display:grid}.dashboard-archived-grid{opacity:.8;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;display:grid}.dashboard-archive-header{cursor:pointer;align-items:center;gap:16px;margin:32px 0 24px;display:flex}.dashboard-archive-title{color:var(--md-sys-color-on-surface-variant);margin:0;font-size:20px}.dashboard-archive-divider{flex:1}.pack-card-content{cursor:pointer;opacity:1;flex-direction:column;gap:8px;padding:16px;display:flex;position:relative;overflow:visible}.pack-card-active-menu{z-index:20}.pack-card-inactive-menu{z-index:1}.pack-card-header{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:8px;display:flex}.pack-card-lang-badge{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:8px;padding:4px 12px;font-size:12px;font-weight:500}.pack-card-meta{align-items:center;gap:4px;margin-left:auto;display:flex}.pack-card-date{color:var(--md-sys-color-on-surface-variant);font-size:12px}.pack-card-menu-wrapper{position:relative}.pack-card-body{flex-direction:column;gap:8px;display:flex}.pack-card-title{color:var(--md-sys-color-on-surface);margin:8px 0}.pack-card-goal{color:var(--md-sys-color-on-surface-variant);margin:0;font-size:14px}.pack-card-footer{justify-content:space-between;align-items:center;margin-top:auto;padding-top:16px;display:flex}.pack-card-status-error{color:var(--md-sys-color-error);font-size:12px}.opacity-70{opacity:.7}.opacity-100{opacity:1}.dashboard-fab-mobile{--md-fab-container-color:var(--md-sys-color-primary-container);--md-fab-icon-color:var(--md-sys-color-on-primary-container)}.login-container{justify-content:center;align-items:center;gap:var(--md-sys-spacing-large,24px);background-color:var(--md-sys-color-surface);flex-direction:column;height:100vh;display:flex}.login-logo{width:120px;height:120px;margin-bottom:8px}.login-welcome{color:var(--md-sys-color-on-surface);text-align:center;margin:0;padding:0 24px}.login-slogan{color:var(--md-sys-color-on-surface-variant);text-align:center;max-width:440px;margin:0;padding:0 24px;line-height:1.6}.language-selector-wrapper{flex-direction:column;width:240px;margin-top:8px;display:flex}.language-select{width:100%}.login-button{margin-top:12px}.flashcard-container{perspective:1000px;cursor:pointer;border-radius:12px;width:100%;max-width:400px;height:auto;min-height:240px;margin:0 auto}.flashcard-container:focus-visible{outline:3px solid var(--md-sys-color-primary);outline-offset:4px}.flashcard-inner{width:100%;height:100%;transform-style:preserve-3d;grid-template-areas:"card";transition:transform .6s cubic-bezier(.4,0,.2,1);display:grid;position:relative}@media (prefers-reduced-motion:reduce){.flashcard-inner{transition:transform .1s}}.flashcard-container.is-flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;box-sizing:border-box;border-radius:12px;flex-direction:column;grid-area:card;width:100%;height:100%;display:flex;overflow:hidden;background-color:var(--md-sys-color-surface-container-high)!important;background:var(--md-sys-color-surface-container-high)!important;box-shadow:none!important;border:none!important}.flashcard-front{transform:rotateY(0)}.flashcard-back{transform:rotateY(180deg)}.flashcard-content{text-align:left;flex-direction:column;flex:1;width:100%;padding:16px;display:flex}.flashcard-main-text{word-break:break-word;color:var(--md-sys-color-on-surface);margin:0 0 4px;padding-right:48px;font-size:18px;font-weight:700}.flashcard-sub-text{color:var(--color-text-secondary);margin:8px 0 0;font-size:16px}.flashcard-definition{color:var(--color-text-secondary);margin-top:8px;font-size:14px;font-style:italic;line-height:1.4}.flashcard-ipa{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container);border-radius:12px;margin-bottom:8px;padding:8px 16px;font-family:Charis SIL,Gentium Plus,Arial,sans-serif;font-size:14px;font-weight:500;line-height:1.4;display:inline-block}.flashcard-actions{box-sizing:border-box;justify-content:flex-end;gap:16px;width:100%;margin-top:auto;padding:12px 20px 16px;display:flex}.flashcard-voice-btn{z-index:5;position:absolute;top:8px;right:8px}.flashcard-flip-prompt{text-align:center;color:var(--md-sys-color-on-surface-variant);opacity:.6;margin-top:auto;padding:12px;font-size:.8125rem}.performance-btn{--md-filled-button-container-shape:20px;min-width:90px;height:40px;font-weight:600}.performance-btn.correct{--md-filled-button-container-color:var(--md-sys-color-primary);--md-filled-button-label-text-color:var(--md-sys-color-on-primary)}.performance-btn.incorrect{--md-filled-button-container-color:var(--md-sys-color-error);--md-filled-button-label-text-color:var(--md-sys-color-on-error)}.flashcard-mode-page{background-color:var(--md-sys-color-surface-container-lowest);width:100%;height:100%;color:var(--md-sys-color-on-surface);flex-direction:column;display:flex;overflow:hidden}.flashcard-header{border-bottom:1px solid var(--md-sys-color-outline-variant);background-color:var(--md-sys-color-surface);z-index:10;flex-shrink:0;align-items:center;gap:16px;padding:8px 16px;display:flex}.flashcard-header-title{margin:0;font-size:1.25rem;font-weight:500}.flashcard-main{flex-direction:column;flex:1;align-items:center;min-height:0;padding:16px;display:flex;position:relative;overflow:hidden}.flashcard-progress-container{flex-direction:column;flex-shrink:0;align-items:center;gap:8px;width:100%;max-width:400px;margin-bottom:16px;display:flex}.flashcard-dots{box-sizing:border-box;flex-flow:row;justify-content:center;gap:4px;width:100%;padding:0 4px;display:flex}.progress-dot{background-color:var(--md-sys-color-surface-container-highest);border-radius:50%;flex-shrink:0;width:8px;height:8px;transition:all .2s}.progress-dot.pending.current{background-color:var(--md-sys-color-outline);transform:scale(1.3)}.progress-dot.correct{background-color:var(--color-success)}.progress-dot.incorrect{background-color:var(--color-error)}.flashcard-progress-text{color:var(--md-sys-color-on-surface-variant);justify-content:space-between;font-size:.875rem;display:flex}.flashcard-content-container{flex-direction:column;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;display:flex;overflow:hidden}.summary-view{text-align:center;background-color:var(--md-sys-color-surface-container-low);width:100%;max-width:400px;box-shadow:var(--md-sys-color-shadow) 0px 4px 12px;border-radius:28px;flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;gap:24px;padding:32px;display:flex}.summary-title{margin:0;font-size:1.75rem}.summary-stats{flex-direction:column;gap:12px;width:100%;display:flex}.summary-score{color:var(--md-sys-color-on-surface);font-size:1.25rem;font-weight:600}.summary-actions{margin-top:16px}.searchable-select{width:100%;position:relative}.searchable-select__dropdown{z-index:10;background:var(--md-sys-color-surface-container,var(--color-surface-container,#f3f3f3));max-height:280px;box-shadow:var(--md-sys-elevation-level2,0 1px 2px 0 #0000004d, 0 2px 6px 2px #00000026);border-radius:4px;margin-top:4px;padding:4px 0;position:absolute;top:100%;left:0;right:0;overflow-y:auto}.searchable-select__option{cursor:pointer;flex-direction:column;justify-content:center;gap:2px;min-height:48px;padding:8px 12px;transition:background-color .1s;display:flex}.searchable-select__option:hover,.searchable-select__option--focused{background:var(--md-sys-color-on-surface,#00000014);background:color-mix(in srgb, var(--md-sys-color-on-surface,#1c1c1c) 8%, transparent)}.searchable-select__option--selected{background:color-mix(in srgb, var(--md-sys-color-on-surface,#1c1c1c) 12%, transparent)}.searchable-select__option--selected:hover,.searchable-select__option--selected.searchable-select__option--focused{background:color-mix(in srgb, var(--md-sys-color-on-surface,#1c1c1c) 16%, transparent)}.searchable-select__option--disabled{opacity:.38;cursor:default;pointer-events:none}.searchable-select__headline{font-family:var(--md-sys-typescale-body-large-font,var(--md-ref-typeface-plain,Roboto, sans-serif));color:var(--md-sys-color-on-surface,var(--color-text-primary,#1c1c1c));font-size:16px;line-height:1.4}.searchable-select__supporting{font-family:var(--md-sys-typescale-body-small-font,var(--md-ref-typeface-plain,Roboto, sans-serif));color:var(--md-sys-color-on-surface-variant,var(--color-text-secondary,#666));font-size:12px;line-height:1.3}.searchable-select__empty{min-height:48px;color:var(--md-sys-color-on-surface-variant,var(--color-text-secondary,#666));justify-content:center;align-items:center;padding:12px 16px;font-size:14px;display:flex}.searchable-select md-outlined-text-field md-icon[slot=trailing-icon]{cursor:pointer}.profile-page{flex-direction:column;gap:24px;width:100%;max-width:900px;margin:0 auto;padding-bottom:80px;display:flex}.page-header{justify-content:space-between;align-items:center;padding:16px 0;display:flex}.profile-section{background-color:var(--md-sys-color-surface-container-low);border-radius:24px;padding:24px}.section-header-row{flex-direction:row;align-items:center;gap:12px;margin-bottom:24px;display:flex}.section-header-row md-icon{flex-shrink:0;color:var(--md-sys-color-primary)!important;text-align:center!important;vertical-align:middle!important;width:24px!important;min-width:24px!important;height:24px!important;min-height:24px!important;margin:0!important;padding:0!important;font-size:24px!important;line-height:24px!important;display:inline-block!important;overflow:hidden!important}.section-header-row h3{color:var(--md-sys-color-primary);margin:0;font-size:1.1rem;font-weight:500}.user-info-card{background-color:var(--md-sys-color-surface-container-high);border-radius:16px;margin-bottom:16px;padding:16px}.user-info-card:last-child{margin-bottom:0}.user-detail-item{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.user-detail-item:last-child{margin-bottom:0}.setting-item{background-color:var(--md-sys-color-surface-container-high);border-radius:12px;flex-direction:row;justify-content:space-between;align-items:center;gap:24px;margin-bottom:12px;padding:12px 16px;display:flex}.setting-item:last-child{margin-bottom:0}.setting-header{align-items:center;gap:12px;min-width:140px;display:flex}.setting-item .detail-icon,.user-info-card .detail-icon{color:var(--md-sys-color-primary);font-size:20px}.detail-content{flex-direction:row;flex:1;justify-content:flex-end;align-items:center;gap:12px;min-width:0;display:flex}.user-info-section .detail-content{justify-content:flex-start}.info-label{color:var(--md-sys-color-on-surface-variant);letter-spacing:.1px;font-size:13px;font-weight:500}.info-value{color:var(--md-sys-color-on-surface);font-size:16px}.action-buttons{flex-wrap:wrap;gap:16px;display:flex}.action-buttons md-filled-button{flex:1;min-width:200px}.slider-container{flex-direction:row;flex:1;align-items:center;gap:16px;display:flex}.slider-container md-slider{flex:1}.slider-label{text-align:right;font-variant-numeric:tabular-nums;min-width:48px;color:var(--md-sys-color-on-surface);font-size:14px}.segmented-control{background-color:var(--md-sys-color-surface-container);border-radius:999px;gap:4px;width:100%;padding:4px;display:flex}.segmented-control .segment-btn{color:var(--md-sys-color-on-surface-variant);cursor:pointer;background:0 0;border:none;border-radius:999px;flex:1;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500;transition:background-color .2s,color .2s;display:flex}.segmented-control .segment-btn.active{background-color:var(--md-sys-color-secondary-container);color:var(--md-sys-color-on-secondary-container)}.segmented-control .segment-btn:hover:not(.active){background-color:color-mix(in srgb, var(--md-sys-color-on-surface) 8%, transparent)}@media (width<=600px){.segmented-control .segment-btn-label{display:none}}@media (width<=500px){.setting-item{flex-direction:column;align-items:stretch;gap:12px}.setting-header{min-width:unset}.detail-content{justify-content:flex-start}}