:root{--radius: 18px;--radius-lg: 20px;--bg: #F8F5F1;--paper: #FFFCF8;--paper-soft: #F4EBDD;--primary: #8A6A52;--primary-hover: #755741;--primary-soft: #E8D8C2;--accent: #D9C4A5;--accent-soft: #F1E7D8;--wood-soft: #EDE1CF;--gray-soft: #F0EAE2;--line: #E7DED3;--text: #23364A;--muted: #5D5D5D;--shadow-sm: 0 8px 22px rgba(78, 60, 43, .06);--shadow-md: 0 18px 42px rgba(78, 60, 43, .09);--shadow-lg: 0 26px 64px rgba(78, 60, 43, .12);--transition: .24s ease}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:radial-gradient(circle at top left,rgba(217,196,165,.36),transparent 34rem),linear-gradient(180deg,#FFFCF8 0%,var(--bg) 48%,#F3ECE2 100%)}a{color:inherit;text-decoration:none}.page-shell{min-height:100vh;display:flex;flex-direction:column}.public-header{border-bottom:1px solid rgba(231,222,211,.92);background:#fffdf8e0!important;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.header-toolbar{min-height:78px;justify-content:space-between}.brand-link{min-width:0;border-radius:var(--radius);padding:8px 10px 8px 6px;transition:background-color var(--transition),transform var(--transition)}.brand-link:hover{background:#d9c4a53d;transform:translateY(-1px)}.brand-link .MuiSvgIcon-root{filter:drop-shadow(0 6px 12px rgba(138,106,82,.18))}.desktop-nav{display:block}.desktop-nav .MuiButton-root,.admin-sidebar .MuiButton-root,.MuiDrawer-paper .MuiButton-root{color:var(--primary-hover);justify-content:flex-start}.desktop-nav .MuiButton-root.active,.admin-sidebar .MuiButton-root.active,.MuiDrawer-paper .MuiButton-root.active{background:#f1e7d8e0;color:var(--primary-hover)}.mobile-nav-button{display:none!important}.main-content{flex:1}.public-main-content{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(circle at 10% 10%,rgba(217,196,165,.3),transparent 24rem),radial-gradient(circle at 92% 42%,rgba(241,231,216,.42),transparent 30rem),linear-gradient(180deg,#fffcf8b3,#f8f5f1c2)}.public-main-content:before{content:"";position:absolute;inset:0;z-index:0;background:linear-gradient(rgba(138,106,82,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(138,106,82,.036) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:linear-gradient(180deg,transparent 0,black 120px,black calc(100% - 80px),transparent 100%);mask-image:linear-gradient(180deg,transparent 0,black 120px,black calc(100% - 80px),transparent 100%);pointer-events:none}.public-main-content>:not(.public-math-background){position:relative;z-index:2}.footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);background:#fffdf8b8}.hero{position:relative;min-height:430px;display:flex;align-items:center;padding:70px 0 46px;overflow:hidden}.hero-copy{animation:gentle-rise .42s ease both}.hero h1{font-size:clamp(2.25rem,4vw,4.4rem);line-height:1.04}.hero-kicker{width:fit-content;display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;color:var(--primary-hover);background:#f1e7d8e0;border:1px solid rgba(138,106,82,.14);font-weight:700}.category-grid{padding-bottom:70px}.home-category-grid{padding-bottom:58px}.category-tile,.content-panel,.document-card,.state-box,.admin-table,.preview-frame,.about-feature{background:#fffdf8e0;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.category-tile,.document-card,.about-feature,.content-panel,.state-box{transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition),background-color var(--transition)}.category-tile:hover,.document-card:hover,.about-feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#d9c4a5}.category-tile{min-height:128px;padding:24px;display:flex;flex-direction:column;justify-content:space-between;gap:18px}.category-icon,.feature-icon{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius);color:var(--primary-hover);background:linear-gradient(135deg,var(--primary-soft),rgba(255,253,248,.9));box-shadow:var(--shadow-sm)}.feature-icon.sage{color:#6f604b;background:linear-gradient(135deg,var(--accent-soft),rgba(255,253,248,.9))}.feature-icon.blue{color:var(--primary-hover);background:linear-gradient(135deg,#f1e7d8,#f6efe5)}.about-archive-section{position:relative;padding:76px 0 88px;background:radial-gradient(circle at 12% 16%,rgba(217,196,165,.18),transparent 22rem),linear-gradient(145deg,#f6efe5c2,#fffcf8b8);overflow:hidden}.about-page-section{min-height:calc(100vh - 162px)}.about-feature{position:relative;height:100%;padding:clamp(24px,3vw,34px);display:flex;flex-direction:column;gap:18px;z-index:1}.about-feature-main{background:#fffdf8eb}.about-feature.compact{flex:1}.materials-list{margin:2px 0 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 14px;list-style:none}.materials-list li{position:relative;padding-left:22px;color:var(--text);font-weight:600}.materials-list li:before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 4px #d9c4a538}.page-section{padding:46px 0 70px}.materials-page{padding-top:28px}.materials-hero{display:flex;flex-direction:column;gap:18px;padding:8px 0 2px}.materials-subtitle{max-width:640px;font-size:1.04rem}.materials-count{font-size:.95rem}.materials-grid{align-items:flex-start}.content-panel{padding:34px}.state-box{padding:42px;text-align:center;background:linear-gradient(145deg,#fffdf8f0,#f4ebdde6)}.document-card{width:100%;overflow:hidden;border-radius:16px}.document-card-content{padding:20px 20px 0!important}.document-card-body{gap:14px}.document-card-heading{min-width:0}.document-card-icon{width:34px;height:34px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;color:var(--primary-hover);background:#f1e7d8db;border:1px solid rgba(217,196,165,.5)}.card-title{min-width:0;line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.document-tags{align-content:flex-start}.document-tags .MuiChip-root{height:26px;font-size:.78rem}.card-spacer{flex:1}.card-actions{margin:2px -20px 0;padding:10px 12px;border-top:1px solid var(--line);background:#f8f5f17a}.card-actions .MuiButton-root{min-height:36px;flex:1;justify-content:center;color:var(--primary-hover);border-radius:12px;padding-inline:10px}.card-actions .MuiButton-root:hover,.card-actions .MuiButton-root:focus-visible{background:#d9c4a538;color:var(--primary-hover)}.filters-bar{width:fit-content;max-width:100%;padding:12px;background:#fffcf8db;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 22px #4e3c2b0d;align-items:center}.filters-bar.filters-bar-compact{padding:10px;gap:10px!important}.filters-bar .MuiTextField-root{min-width:180px;flex:1}.filters-bar.filters-bar-compact .MuiTextField-root{width:min(260px,32vw);min-width:210px;flex:0 0 auto}.filters-bar.filters-bar-compact .MuiInputBase-root{min-height:44px}.filters-bar .MuiButton-root.Mui-disabled{color:#9a9288}.preview-frame{overflow:hidden;min-height:520px;background:#fffcf8}.preview-frame iframe,.preview-frame img{display:block;width:100%;min-height:520px;border:0;object-fit:contain}.login-page{min-height:100vh;display:flex!important;align-items:center;background:radial-gradient(circle at 22% 12%,rgba(241,231,216,.88),transparent 26rem),radial-gradient(circle at 84% 78%,rgba(244,235,221,.84),transparent 24rem),var(--bg)}.login-page .content-panel{width:100%}.admin-shell{min-height:100vh;display:grid;grid-template-columns:270px 1fr;background:linear-gradient(135deg,rgba(217,196,165,.28),transparent 32rem),var(--bg)}.admin-sidebar{border-right:1px solid var(--line);background:#fffdf8e6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);padding:26px;display:flex;flex-direction:column;gap:26px}.admin-main{padding:34px}.admin-mobile-bar{display:none}.admin-table{overflow:hidden;border-collapse:separate}.admin-table .MuiTableCell-head{color:var(--muted);font-weight:700;background:#f4ebddb8}.admin-table .MuiTableRow-root{transition:background-color var(--transition)}.admin-table .MuiTableRow-root:hover{background:#d9c4a533}.admin-form{max-width:800px}.success-message{padding:13px 16px;border:1px solid #D7C3A8;background:#f6efe5;border-radius:var(--radius);color:#5f4b38;box-shadow:var(--shadow-sm)}.MuiPagination-ul .MuiPaginationItem-root{border-radius:16px}.MuiCircularProgress-root{color:var(--primary)!important}@keyframes gentle-rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media(max-width:900px){.materials-list{grid-template-columns:1fr}}@media(max-width:760px){.desktop-nav{display:none}.mobile-nav-button{display:inline-flex!important}.header-toolbar{min-height:70px}.hero{min-height:380px;padding-top:46px}.content-panel{padding:24px}.materials-page{padding-top:24px}.materials-hero{gap:18px}.about-archive-section{padding:54px 0 62px}.about-feature{padding:24px}.filters-bar,.filters-bar.filters-bar-compact{width:100%;padding:12px}.filters-bar.filters-bar-compact .MuiTextField-root{width:100%;min-width:0}.card-actions{gap:6px!important}.card-actions .MuiButton-root{font-size:.86rem;padding-inline:8px}.admin-shell{display:block}.admin-sidebar{display:none}.admin-mobile-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.admin-main{padding:20px}}.error-message{padding:12px 16px;border:1px solid rgba(169,100,92,.24);border-radius:16px;background:#a9645c1a;color:#8a3e38}.teacher-profile-card{gap:22px}.teacher-name{margin-top:10px!important;color:var(--primary-hover);font-weight:750!important;line-height:1.16!important}.teacher-meta{align-items:stretch}.teacher-meta-item{flex:1;min-width:0;display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid rgba(217,196,165,.56);border-radius:16px;background:#f1e7d88a;color:var(--text);font-weight:650;line-height:1.35}.teacher-meta-item .MuiSvgIcon-root{flex:0 0 auto;color:var(--primary-hover)}.teacher-copy{max-width:68ch}.teacher-copy strong{color:var(--text);font-weight:750}.credo-card{overflow:hidden;background:linear-gradient(145deg,#fffcf8f0,#f1e7d8b8)}.credo-card:after{content:"“";position:absolute;right:22px;top:4px;color:#8a6a521a;font-family:Georgia,serif;font-size:8rem;line-height:1;z-index:0;pointer-events:none}.credo-card>*{position:relative;z-index:1}.credo-quote{margin:0;color:var(--text);font-size:clamp(1.18rem,2vw,1.48rem);font-weight:760;line-height:1.38}.archive-summary-card{gap:16px}.about-materials-list{grid-template-columns:1fr;gap:8px;margin-top:0}.about-materials-list li{font-size:.95rem;line-height:1.45}@media(max-width:760px){.teacher-profile-card{gap:18px}.teacher-name{font-size:1.55rem!important}.teacher-meta-item{padding:11px 12px}.credo-quote{font-size:1.12rem}}.public-math-background{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden;color:var(--primary)}.math-sketch{position:absolute;width:clamp(150px,18vw,280px);height:auto;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round;opacity:.24;filter:drop-shadow(0 10px 18px rgba(78,60,43,.035))}.math-sketch text{fill:currentColor;stroke:none;font-family:Segoe Print,Comic Sans MS,Inter,sans-serif;font-size:15px;font-weight:650;letter-spacing:0}.math-sketch-graph{top:38px;left:max(18px,calc((100vw - 1180px)/2 - 130px));width:clamp(185px,19vw,292px);transform:rotate(-4deg);opacity:.26}.math-sketch-linear{top:min(520px,36%);right:max(26px,calc((100vw - 1180px)/2 - 118px));width:clamp(170px,17vw,258px);transform:rotate(4deg);opacity:.22}.math-sketch-sine{top:720px;left:max(18px,calc((100vw - 1180px)/2 - 122px));width:clamp(190px,20vw,310px);transform:rotate(2deg);opacity:.21}.math-sketch-triangle{right:max(18px,calc((100vw - 1180px)/2 - 112px));top:118px;width:clamp(150px,16vw,248px);transform:rotate(5deg);opacity:.24}.math-sketch-circle{left:max(20px,calc((100vw - 1180px)/2 - 98px));top:1040px;width:clamp(150px,15vw,235px);transform:rotate(3deg);opacity:.23}.math-sketch-solids{right:max(18px,calc((100vw - 1180px)/2 - 110px));top:980px;width:clamp(170px,17vw,262px);transform:rotate(-3deg);opacity:.22}.math-sketch-sphere{left:50%;top:410px;width:clamp(145px,14vw,218px);transform:translate(-50%) rotate(-5deg);opacity:.18}.math-sketch-tools{right:max(22px,calc((100vw - 1180px)/2 - 96px));top:1440px;width:clamp(180px,18vw,280px);transform:rotate(3deg);opacity:.22}.math-sketch-algebra{left:max(20px,calc((100vw - 1180px)/2 - 130px));top:1500px;width:clamp(230px,25vw,360px);transform:rotate(-2deg);opacity:.21}@media(max-width:1100px){.math-sketch-graph{left:-72px;top:36px}.math-sketch-triangle{right:-54px;top:96px}.math-sketch-sine{left:-92px}.math-sketch-circle{left:-58px}.math-sketch-linear,.math-sketch-solids,.math-sketch-tools{right:-72px}}@media(max-width:900px){.public-math-background{opacity:.84}.math-sketch-triangle,.math-sketch-solids,.math-sketch-tools,.math-sketch-algebra{display:none}.math-sketch-graph{top:26px;left:-78px;width:232px}.math-sketch-linear{top:450px;right:-84px;width:220px}.math-sketch-sine{top:860px;left:-116px;width:260px}.math-sketch-circle{right:-76px;left:auto;top:1180px;width:210px}.math-sketch-sphere{left:auto;right:-70px;top:1620px;width:190px;transform:rotate(8deg)}}@media(max-width:760px){.public-main-content:before{background-size:68px 68px;opacity:.55}.math-sketch{opacity:.17}.math-sketch-linear,.math-sketch-sine,.math-sketch-sphere{display:none}.math-sketch-graph{top:14px;left:-108px;width:220px}.math-sketch-circle{right:-106px;top:820px;width:205px}}.about-feature,.about-feature *{min-width:0}.teacher-name,.teacher-meta-item span,.credo-quote,.archive-summary-card li,.about-feature h1,.about-feature h2,.about-feature h3,.about-feature h4{overflow-wrap:anywhere}.teacher-meta-item span{min-width:0}@media(max-width:760px){.about-feature h1,.about-feature .MuiTypography-h3{font-size:2.35rem;line-height:1.12}.about-feature h2,.about-feature .MuiTypography-h4{font-size:1.95rem;line-height:1.18}}@media(max-width:430px){.about-feature h1,.about-feature .MuiTypography-h3{font-size:2rem}.about-feature h2,.about-feature .MuiTypography-h4{font-size:1.7rem}.teacher-name{font-size:1.32rem!important}}@media(max-width:760px){.about-page-section>.MuiContainer-root{max-width:100%;padding-left:16px;padding-right:16px}.about-page-grid{width:100%!important;margin:0!important}.about-page-grid-item{max-width:100%!important;flex-basis:100%!important;padding-left:0!important;padding-top:0!important}.about-page-grid-item+.about-page-grid-item{margin-top:16px}}.math-background-about{color:var(--primary-hover)}.math-background-about .math-sketch{stroke-width:1.75}.math-background-about .math-sketch-graph{top:44px;left:max(20px,calc((100vw - 1180px)/2 - 96px));width:clamp(220px,21vw,310px);opacity:.65}.math-background-about .math-sketch-triangle{top:84px;right:max(12px,calc((100vw - 1180px)/2 - 72px));width:clamp(190px,19vw,282px);opacity:.58}.math-background-about .math-sketch-linear{top:392px;right:max(12px,calc((100vw - 1180px)/2 - 78px));width:clamp(190px,19vw,276px);opacity:.53}.math-background-about .math-sketch-sphere{top:600px;left:50%;width:clamp(150px,15vw,224px);transform:translate(-50%) rotate(-4deg);opacity:.36}.math-background-about .math-sketch-sine{top:742px;left:max(18px,calc((100vw - 1180px)/2 - 96px));width:clamp(220px,23vw,340px);opacity:.53}.math-background-about .math-sketch-circle{top:852px;left:max(18px,calc((100vw - 1180px)/2 - 68px));width:clamp(180px,18vw,258px);opacity:.55}.math-background-about .math-sketch-solids{top:820px;right:max(12px,calc((100vw - 1180px)/2 - 76px));width:clamp(190px,19vw,282px);opacity:.53}.math-background-about .math-sketch-tools{top:1120px;right:max(18px,calc((100vw - 1180px)/2 - 86px));width:clamp(190px,19vw,286px);opacity:.46}.math-background-about .math-sketch-algebra{top:84px;left:50%;width:clamp(270px,28vw,390px);transform:translate(-50%) rotate(-2deg);opacity:.53}@media(max-width:1100px){.math-background-about .math-sketch-graph{left:-52px}.math-background-about .math-sketch-triangle,.math-background-about .math-sketch-linear,.math-background-about .math-sketch-solids,.math-background-about .math-sketch-tools{right:-48px}.math-background-about .math-sketch-sine,.math-background-about .math-sketch-circle,.math-background-about .math-sketch-algebra{left:-56px}}@media(max-width:900px){.math-background-about .math-sketch-graph{top:26px;left:-74px;width:238px;opacity:.34}.math-background-about .math-sketch-linear{display:block;top:560px;right:-92px;width:220px;opacity:.29}.math-background-about .math-sketch-circle{top:1180px;right:-76px;left:auto;width:210px;opacity:.31}.math-background-about .math-sketch-sine,.math-background-about .math-sketch-sphere{display:none}}@media(max-width:760px){.math-background-about{color:var(--primary)}.math-background-about .math-sketch{opacity:.2;stroke-width:1.65}.math-background-about .math-sketch-linear{display:none}.math-background-about .math-sketch-graph{top:14px;left:-108px;width:220px;opacity:.22}.math-background-about .math-sketch-circle{top:820px;right:-106px;width:205px;opacity:.22}}
