@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/fef07dbb0973bf53-s.3p2_lha1f2xer.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.1qq4vpdcun5oj.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/53b9e256198e5412-s.390ncx5urfkfu.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.21jp631_3pja2.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.0wgildi0cnwt9.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_a71539c9-module__T19VSG__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_a71539c9-module__T19VSG__variable{--font-geist-sans:"Geist", "Geist Fallback"}
@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5ce348bf30bf5439-s.18ql67ww2ii1-.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/4fa387ec64143e14-s.3f2jdebwxs8i-.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6306c77e7c8268e4-s.1ygs37po_4mpd.woff2)format("woff2");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7d817b4c03b0c5f1-s.2ojkkrs9oa5rc.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/bbc41e54d2fcbd21-s.1_6ayb0k2-vor.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/797e433ab948586e-s.p.0w5z4e7s8jfe5.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Fallback;src:local(Arial);ascent-override:74.67%;descent-override:21.92%;line-gap-override:0.0%;size-adjust:134.59%}.geist_mono_8d43a2aa-module__8Li5zG__className{font-family:Geist Mono,Geist Mono Fallback;font-style:normal}.geist_mono_8d43a2aa-module__8Li5zG__variable{--font-geist-mono:"Geist Mono", "Geist Mono Fallback"}
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.flex{display:flex}.hidden{display:none}.h-full{height:100%}.min-h-full{min-height:100%}.flex-1{flex:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.flex-col{flex-direction:column}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{--bg:#0f1115;--surface:#171a21;--surface-soft:#1e222b;--text:#f3f4f6;--muted:#9aa4b2;--primary:#7c8cff;--primary-hover:#6677f0;--secondary:#a78bfa;--success:#4ea98f;--warning:#d18b5b;--danger:#d46a6a;--border:#2a303c;--shadow:0 1px 2px #00000059, 0 18px 50px #00000047;--radius:1.25rem;--review-again-bg:#2a1f25;--review-again-border:#d46a6a59;--review-again-text:#f3a6a6;--review-hard-bg:#2b241c;--review-hard-border:#d18b5b59;--review-hard-text:#efbd8f;--review-good-bg:#1e2435;--review-good-border:#7c8cff59;--review-good-text:#b5c0ff;--review-easy-bg:#1d2925;--review-easy-border:#4ea98f59;--review-easy-text:#9de0c9}html{scroll-behavior:smooth}body{color:var(--text);-webkit-font-smoothing:antialiased;background:radial-gradient(circle at 0 0,#7c8cff1f,#0000 30%),radial-gradient(circle at 100% 0,#a78bfa14,#0000 32%),linear-gradient(#11131a,#0f1115);min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,sans-serif}.app-error{color:var(--danger);font-size:.9rem;font-weight:700}.app-page{min-height:100vh;padding:2.5rem 1.5rem}.app-container{max-width:72rem;margin:0 auto}.app-container-narrow{max-width:56rem;margin:0 auto}.page-header{margin-bottom:2.5rem}.page-kicker{text-transform:uppercase;letter-spacing:.3em;color:var(--muted);margin-top:3rem;font-size:.875rem}.page-title{letter-spacing:-.04em;font-size:3.5rem;font-weight:900;line-height:1}.page-subtitle{max-width:42rem;color:var(--muted);margin-top:1rem;margin-bottom:1.4rem}.page-back{margin-bottom:3.5rem}.category-wrap-panel{flex-wrap:wrap;gap:.65rem;max-width:52rem;margin-top:1.5rem;display:flex}.category-box{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);min-width:5.5rem;color:var(--muted);justify-content:space-between;align-items:center;gap:.75rem;padding:.75rem 1rem;font-weight:800;transition:all .15s;display:flex}.category-box:hover{background:var(--surface-soft);color:var(--text);transform:translateY(-1px)}.category-box-active{background:var(--primary);color:#fff;border-color:var(--primary)}.category-wrap-panel .app-button-outline{border-radius:var(--radius);padding:.75rem 1rem}.stats-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-bottom:2.5rem;display:grid}.stats-grid>*{text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.form-stack,.section-stack{flex-direction:column;gap:1rem;display:flex}.split-row{grid-template-columns:1fr;gap:1.5rem;display:grid}@media (min-width:768px){.split-row{grid-template-columns:minmax(0,1fr) 14rem;align-items:start}}.split-row>:first-child{min-width:0}.split-row>.action-row{width:100%}.action-row{grid-template-columns:1fr;align-items:stretch;gap:.75rem;display:grid}@media (min-width:480px){.action-row{grid-template-columns:repeat(2,minmax(0,1fr))}}.action-row>*{flex:1 1 0;width:100%}.action-row button{width:100%}.meta-row{color:var(--muted);flex-wrap:wrap;gap:1rem;margin-top:1.5rem;font-size:.875rem;display:flex}.app-muted{color:var(--muted)}.modal-backdrop{z-index:9999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0009;place-items:center;padding:2rem;display:grid;position:fixed;inset:0}.modal-card{border:1px solid var(--border);background:var(--surface);border-radius:1.5rem;width:min(100%,38rem);max-height:90vh;padding:2rem;animation:.18s modalEnter;position:relative;overflow-y:auto;box-shadow:0 30px 100px #00000073,0 10px 30px #00000040}.modal-card::-webkit-scrollbar{display:none}.modal-card{scrollbar-width:none}.modal-header{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1.5rem;display:flex}.modal-close{width:2.5rem;height:2.5rem;color:var(--muted);background:var(--surface-soft);border-radius:999px;font-size:1.25rem;transition:all .15s}.modal-close:hover{background:var(--primary);color:#fff;transform:rotate(90deg)}@keyframes modalEnter{0%{opacity:0;transform:translateY(16px)scale(.96)}to{opacity:1;transform:translateY(0)scale(1)}}.content-panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);flex-direction:column;gap:1.5rem;padding:1.5rem;display:flex}.content-panel-header{justify-content:space-between;align-items:flex-start;gap:1rem;display:flex}.deck-menu-list{flex-direction:column;gap:.5rem;display:flex}.deck-menu-item{text-align:left;border-radius:var(--radius);width:100%;color:var(--muted);background:var(--surface-soft);border:1px solid #0000;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.2rem;transition:all .15s;display:flex}.deck-menu-item:hover{border-color:var(--primary);color:var(--text);transform:translate(2px)}.deck-menu-item-active{background:var(--primary);color:#fff}.deck-menu-title{font-weight:800}.deck-menu-meta{opacity:.75;margin-top:.25rem;font-size:.8rem}.deck-menu-count{text-align:center;min-width:2rem;font-weight:900}.selected-deck-area{margin-top:.5rem}@media (max-width:700px){.app-page{padding:1.5rem 1rem}.page-title{font-size:2.5rem}.content-panel-header{flex-direction:column}.category-box{flex:auto}}.deck-wrap-panel{flex-wrap:wrap;gap:.85rem;display:flex}.deck-mini-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-soft);text-align:left;flex-direction:column;gap:.85rem;width:12rem;padding:1rem;transition:all .15s;display:flex}.deck-mini-card:hover{border-color:var(--primary);background:var(--surface);transform:translateY(-2px)}.deck-mini-card-active{background:var(--primary);color:#fff;border-color:var(--primary)}.deck-mini-top{justify-content:space-between;align-items:flex-start;gap:.75rem;display:flex}.deck-mini-title{font-weight:900;line-height:1.2}.deck-mini-count{text-align:center;background:#ffffff24;border-radius:999px;min-width:2rem;padding:.3rem .45rem;font-size:.8rem;font-weight:900}.deck-mini-category{opacity:.72;font-size:.82rem}@media (max-width:700px){.deck-mini-card{width:100%}}.deck-header-actions{grid-template-columns:1fr;gap:.75rem;width:100%;max-width:100%;display:grid}.deck-header-actions>*{width:100%;min-width:0}.deck-header-actions button{white-space:nowrap;text-overflow:ellipsis;justify-content:center;align-items:center;width:100%;min-height:3rem;display:flex;overflow:hidden}@media (max-width:768px){.deck-header-actions{grid-template-columns:repeat(2,minmax(0,1fr))}}.flashcard-button-stack{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;width:100%;display:grid}.flashcard-button-stack button{white-space:nowrap;justify-content:center;align-items:center;width:100%;min-height:3rem;display:flex}@media (min-width:768px){.flashcard-button-stack{grid-template-columns:1fr}}.deck-due-card{border-radius:calc(var(--radius) - .35rem);text-align:center;border:1px solid #7c8cff47;flex-direction:row;justify-content:center;align-items:center;gap:.75rem;min-width:6rem;margin-top:15px;padding:.9rem 1rem;display:flex;box-shadow:inset 0 1px #ffffff12,0 8px 24px #0000002e}.deck-due-label{text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-size:.72rem;font-weight:800}.deck-due-value{color:var(--text);font-size:2rem;font-weight:950;line-height:1}.theme-toggle{z-index:9998;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:999px;padding:.6rem .9rem;font-size:.8rem;font-weight:800;position:fixed;top:1rem;left:1rem}.theme-toggle:hover{background:var(--surface-soft)}.language-switcher{z-index:9999;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:999px;padding:.55rem .75rem;font-size:.8rem;font-weight:800;position:fixed;top:1rem;left:auto;right:1rem}.language-switcher:hover{cursor:pointer}html[dir=rtl] .language-switcher{left:1rem;right:auto}.logout-button{z-index:9999;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:999px;padding:.55rem .75rem;font-size:.8rem;font-weight:800;position:fixed;top:3.75rem;right:1rem}.logout-button:hover{cursor:pointer}html[dir=rtl] .logout-button{left:9rem;right:auto}.auth-page{justify-content:center;align-items:center;min-height:100vh;padding:2rem;display:flex}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:480px;box-shadow:var(--shadow);padding:2.5rem}.auth-header{text-align:center;margin-bottom:2rem}.auth-switch-text{text-align:center;color:var(--muted);margin-top:.5rem;font-size:.92rem}.auth-full-button{width:100%}.category-box-wrap{position:relative}.category-delete-floating{background:var(--danger);color:#fff;width:1.5rem;height:1.5rem;box-shadow:var(--shadow);cursor:pointer;border:none;border-radius:999px;justify-content:center;align-items:center;font-size:1rem;font-weight:900;display:flex;position:absolute;top:-.45rem;right:-.45rem}.card-base{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.stat-card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);padding:1.5rem}.stat-card-highlight{border:1px solid var(--primary);border-radius:var(--radius);background:var(--surface-soft);box-shadow:var(--shadow);padding:1.5rem}.stat-label{color:var(--muted);font-size:.875rem}.stat-value{margin-top:.5rem;font-size:2.25rem;font-weight:900}.deck-card{border-radius:var(--radius);background:linear-gradient(135deg, #7c8cff1f, transparent 34%), linear-gradient(180deg, #ffffff08, #ffffff04), var(--surface);border:1px solid #ffffff0f;padding:1.5rem;transition:transform .2s,border-color .2s,box-shadow .2s;position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffff0d,0 18px 55px #00000047}.deck-card:before{content:"";background:linear-gradient(180deg, var(--primary), var(--secondary));width:4px;position:absolute;inset:0 auto 0 0}.deck-card:hover{border-color:#7c8cff59;transform:translateY(-2px);box-shadow:inset 0 1px #ffffff12,0 24px 70px #00000057}.create-deck-card,.create-card-panel{border:1px dashed var(--border);border-radius:var(--radius);background:var(--surface-soft);box-shadow:var(--shadow);margin-bottom:2.5rem;padding:1.5rem}.flashcard-item{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);padding:1.5rem;transition:all .2s}.flashcard-item:hover{border-color:var(--primary);transform:translateY(-2px)}.card-title{font-size:1.5rem;font-weight:900}.card-description{color:var(--muted);margin-top:.75rem;line-height:1.6}.create-category-card{border:1px dashed var(--border);border-radius:var(--radius);background:var(--surface-soft);box-shadow:var(--shadow);margin-bottom:1rem;padding:1.5rem}.memory-info-bar{border-radius:calc(var(--radius) - .35rem);background:linear-gradient(#ffffff06,#ffffff03);border:1px solid #ffffff0d;flex-wrap:wrap;gap:1rem;margin-top:1.25rem;padding:1rem 1.25rem;display:flex}.memory-info-bar>div{align-items:center;gap:.5rem;display:flex}.memory-info-bar span{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:.72rem}.memory-info-bar strong{color:var(--text);font-size:.92rem;font-weight:800}.deck-memory-curve{border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:2.5rem;padding:1.5rem}.deck-memory-header{justify-content:space-between;gap:1rem;margin-bottom:1.5rem;display:flex}.memory-curve-svg{width:100%;height:180px;overflow:visible}.memory-curve-line{fill:none;stroke:#e7c35a;stroke-width:4px;stroke-linecap:round;filter:drop-shadow(0 0 8px #e7c35a59)}.memory-curve-dot{fill:#f4d879;stroke:var(--surface);stroke-width:3px;filter:drop-shadow(0 0 10px #f4d87973)}.memory-curve-labels{color:var(--muted);text-align:center;flex-wrap:wrap;justify-content:center;gap:.75rem;margin-top:1rem;font-size:.8rem;display:flex}.flashcard-image{object-fit:fill;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-soft);width:100%;max-width:100%;height:auto;max-height:none;margin-top:1.25rem;display:block}button,a{transition:all .18s}.app-button{background:var(--primary);color:#fff;border-radius:var(--radius);padding:.75rem 1.5rem;font-weight:700}.app-button:hover{background:var(--primary-hover);transform:translateY(-1px)}.app-button-outline{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:.75rem 1.25rem;font-weight:600}.app-button-outline:hover{background:var(--surface-soft)}.app-button-danger{background:var(--danger);color:#fff;border-radius:var(--radius);padding:.75rem 1.25rem;font-weight:700}.review-again{background:var(--review-again-bg);color:var(--review-again-text);border:1px solid var(--review-again-border);border-radius:var(--radius);padding:1.25rem;font-weight:700}.review-hard{background:var(--review-hard-bg);color:var(--review-hard-text);border:1px solid var(--review-hard-border);border-radius:var(--radius);padding:1.25rem;font-weight:700}.review-good{background:var(--review-good-bg);color:var(--review-good-text);border:1px solid var(--review-good-border);border-radius:var(--radius);padding:1.25rem;font-weight:700}.review-easy{background:var(--review-easy-bg);color:var(--review-easy-text);border:1px solid var(--review-easy-border);border-radius:var(--radius);padding:1.25rem;font-weight:700}input,textarea{outline:none;transition:all .18s}.app-input,.app-textarea{background:var(--surface);width:100%;color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:1rem}.app-textarea{resize:vertical;min-height:8rem}.app-input::placeholder,.app-textarea::placeholder{color:var(--muted)}.app-input:focus,.app-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #3b82f62e}.review-toolbar{justify-content:space-between;align-items:center;gap:1rem;margin-bottom:3.5rem;display:flex}.review-mode-toggle{background:var(--surface-soft);border:1px solid var(--border);border-radius:999px;gap:.35rem;padding:.35rem;display:flex}.review-meta{color:var(--muted);justify-content:space-between;gap:1rem;margin-bottom:1rem;font-size:.875rem;display:flex}.review-progress-track{background:var(--surface-soft);border:1px solid var(--border);border-radius:999px;height:.45rem;margin-bottom:2rem;overflow:hidden}.review-progress{background:linear-gradient(90deg, var(--primary), var(--secondary));border-radius:999px;height:100%}.review-card{min-height:460px;transform-style:preserve-3d;perspective:1200px;border-radius:2.25rem;position:relative}.review-face{background:radial-gradient(circle at top right, #3b82f624, transparent 30%), var(--surface);border:1px solid var(--border);border-radius:2.25rem;position:relative;overflow:visible;box-shadow:0 24px 80px #00000052,inset 0 1px #ffffff0a}.review-face+.review-face{position:absolute;inset:0}.review-inner{flex-direction:column;justify-content:center;min-height:460px;padding:3.5rem;display:flex}.review-question-label{color:var(--muted);text-transform:uppercase;letter-spacing:.35em;margin-bottom:1.25rem;font-size:.75rem}.review-answer-label{color:#e7c35a;text-transform:uppercase;letter-spacing:.18em;margin-bottom:1.5rem;font-size:1rem;font-weight:900}.review-question{overflow-wrap:break-word;word-break:break-word;letter-spacing:-.04em;width:100%;max-width:48rem;margin-bottom:2rem;font-size:clamp(1.7rem,4vw,4rem);font-weight:950;line-height:1.08}.review-answer{overflow-wrap:break-word;word-break:break-word;width:100%;max-width:46rem;font-size:clamp(1.35rem,2.5vw,2.2rem);font-weight:700;line-height:1.65}.review-reveal-button{border-radius:1.5rem;width:100%;margin-top:1.5rem;padding:1.25rem;font-size:1.05rem}.review-buttons-grid{grid-template-columns:repeat(2,1fr);gap:.9rem;margin-top:1.5rem;display:grid}@media (min-width:768px){.review-buttons-grid{grid-template-columns:repeat(4,1fr)}}.review-card-image{object-fit:contain;object-position:center;background:#ffffff08;border:1px solid #ffffff14;border-radius:1.25rem;width:100%;height:auto;margin-bottom:1.5rem;display:block}.review-mode-grid{flex-wrap:wrap;gap:.5rem;margin-bottom:1.5rem;display:flex}.review-mode-grid button{white-space:nowrap;flex:auto;min-width:6.5rem}.tag-list{flex-wrap:wrap;gap:.5rem;margin-top:1.25rem;display:flex}.app-tag{background:var(--surface-soft);color:var(--primary);border:1px solid var(--border);border-radius:999px;align-items:center;padding:.25rem .75rem;font-size:.875rem;display:inline-flex}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}