:root{
  --primary:#c8102e;--primary-dark:#970b22;--primary-deep:#650615;--primary-soft:#fff0f3;
  --ink:#1d252d;--muted:#6e7781;--line:#e7e9ec;--surface:#fff;--background:#f7f7f8;
  --shadow:0 18px 45px rgba(91,8,25,.10)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--ink);background:var(--background)}
button,input,select{font:inherit}button,a{transition:.2s ease}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}
.topbar{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 4vw;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40;backdrop-filter:blur(12px)}
.brand{display:flex;align-items:center;gap:12px}.brand img{width:48px;height:48px;border-radius:50%;object-fit:cover}.brand strong{display:block;font-size:20px;color:var(--primary)}.brand small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.desktop-nav{display:flex;gap:24px;font-size:14px;font-weight:800}.desktop-nav a:hover{color:var(--primary)}.top-actions{display:flex;gap:10px;align-items:center}
.btn{border:0;border-radius:12px;padding:12px 18px;font-weight:900;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px)}.btn-outline{background:#fff;color:var(--primary);border:1px solid #efbdc7}.btn-white{background:#fff;color:var(--primary)}.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}.icon-btn{display:none;border:0;background:var(--primary-soft);color:var(--primary);width:42px;height:42px;border-radius:11px;font-size:20px}

.hero{position:relative;color:#fff;padding:78px 4vw 90px;background-image:url("https://images.unsplash.com/photo-1509062522246-3755977927d7?auto=format&fit=crop&w=2000&q=85");background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(83,4,18,.94) 0%,rgba(165,8,37,.87) 52%,rgba(200,16,46,.72) 100%)}
.hero-inner{position:relative;z-index:2;max-width:1450px;margin:auto;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.7fr);gap:70px;align-items:center}
.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:1.8px;font-weight:900;color:#ffd8df}.eyebrow.dark{color:var(--primary)}
.hero h1{font-size:clamp(38px,5vw,68px);line-height:1.03;max-width:850px;margin:16px 0 18px}.hero p{max-width:760px;color:#fae4e8;font-size:18px;line-height:1.7}
.search-shell{max-width:850px;margin-top:30px;background:#fff;border-radius:16px;padding:8px;display:flex;align-items:center;gap:10px;box-shadow:0 20px 50px rgba(0,0,0,.18)}.search-icon{color:var(--muted);font-size:28px;margin-left:8px}.search-shell input{flex:1;border:0;outline:0;padding:14px;color:var(--ink);min-width:0}.search-shell button{border:0;background:var(--primary);color:#fff;border-radius:11px;padding:14px 20px;font-weight:900;cursor:pointer}
.hero-actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}.hero-stats{display:flex;gap:54px;margin-top:36px}.hero-stats div{display:flex;flex-direction:column}.hero-stats strong{font-size:28px}.hero-stats span{font-size:12px;color:#f4c7d0;margin-top:4px}
.hero-logo-card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);border-radius:30px;padding:32px;text-align:center;box-shadow:0 28px 70px rgba(75,0,15,.25);backdrop-filter:blur(8px)}.hero-logo-card img{width:min(245px,72%);margin:0 auto 20px;border-radius:50%;box-shadow:0 20px 40px rgba(0,0,0,.22)}.hero-logo-card h2{margin:0;font-size:26px}.hero-logo-card p{font-size:14px;margin:10px auto 0}

.quick-links{max-width:1300px;margin:-34px auto 34px;position:relative;z-index:3;display:grid;grid-template-columns:repeat(4,1fr);gap:15px;padding:0 20px}.quick-links a{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow);display:grid;grid-template-columns:48px 1fr;column-gap:12px;align-items:center}.quick-links span{grid-row:1/3;width:48px;height:48px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-size:20px}.quick-links strong{font-size:16px}.quick-links small{color:var(--muted)}.quick-links a:hover{transform:translateY(-3px);border-color:#efbdc7}

.popular-strip{max-width:1450px;margin:0 auto 46px;padding:0 3vw}.strip-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}.strip-heading h2{font-size:30px;margin:6px 0 0}.strip-heading a{color:var(--primary);font-weight:900}.popular-row{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(180px,220px);gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}.popular-card{scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:17px;overflow:hidden;box-shadow:0 10px 25px rgba(91,8,25,.06)}.popular-card img{width:100%;aspect-ratio:4/5;object-fit:cover}.popular-card div{padding:14px}.popular-card strong{display:block;line-height:1.3}.popular-card small{color:var(--muted);display:block;margin-top:6px}

.layout{display:grid;grid-template-columns:270px minmax(0,1fr);max-width:1500px;margin:0 auto}.sidebar{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px 18px;height:max-content;position:sticky;top:96px;margin:0 0 60px 18px}.sidebar-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.mini-brand{display:flex;align-items:center;gap:10px}.mini-brand img{width:36px;height:36px;border-radius:50%}.sidebar-head button{display:none;border:0;background:none;font-size:28px}
.nav-item{width:100%;display:flex;align-items:center;gap:12px;border:0;background:transparent;padding:13px;border-radius:12px;color:var(--muted);font-weight:800;text-align:left;cursor:pointer}.nav-item span{width:25px;text-align:center}.nav-item:hover,.nav-item.active{background:var(--primary-soft);color:var(--primary)}.filter-block{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.filter-block h3{font-size:14px}.filter-block label{display:block;color:var(--muted);font-size:14px;margin:12px 0}
.content{padding:8px 3vw 60px;min-width:0}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px;gap:24px}.section-heading h2{margin:7px 0 8px;font-size:32px}.section-heading p{margin:0;color:var(--muted);line-height:1.6}.text-btn{border:0;background:none;color:var(--primary);font-weight:900;cursor:pointer;white-space:nowrap}
.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.category-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 8px 20px rgba(91,8,25,.04);cursor:pointer}.category-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#efbdc7}.category-icon{width:50px;height:50px;border-radius:15px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-size:22px;font-weight:900;margin-bottom:16px}.category-card h3{margin:0 0 8px;font-size:17px}.category-card p{margin:0;color:var(--muted);font-size:13px}
.books-heading{margin-top:48px}#sortSelect{border:1px solid var(--line);background:#fff;border-radius:11px;padding:11px 13px;color:var(--ink)}.active-filter{font-size:14px;color:var(--primary);font-weight:800;margin:-5px 0 16px}.book-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.book-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 9px 22px rgba(91,8,25,.05);display:flex;flex-direction:column}.book-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.book-cover{position:relative}.book-cover img{width:100%;aspect-ratio:4/5;object-fit:cover}.book-cover .subject-badge{position:absolute;left:14px;bottom:14px;background:rgba(94,5,21,.88);color:#fff;padding:7px 10px;border-radius:9px;font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.5px}
.book-body{padding:17px;display:flex;flex-direction:column;flex:1}.book-meta{font-size:11px;color:var(--primary);text-transform:uppercase;font-weight:900;letter-spacing:.6px}.book-body h3{font-size:17px;line-height:1.3;margin:8px 0}.book-body p{font-size:13px;color:var(--muted);line-height:1.5;margin:0 0 16px}.book-footer{display:flex;justify-content:space-between;align-items:center;margin-top:auto;border-top:1px solid var(--line);padding-top:13px}.book-footer a{font-weight:900;color:var(--primary);font-size:13px}.favorite{border:0;background:#f3f4f5;border-radius:9px;width:35px;height:35px;cursor:pointer}.favorite.active{background:var(--primary-soft);color:var(--primary)}.empty-state{text-align:center;padding:50px;background:#fff;border-radius:18px;border:1px dashed var(--line)}
.feature-banner{margin-top:52px;border-radius:26px;padding:38px;background:linear-gradient(135deg,var(--primary-deep),var(--primary));color:#fff;display:grid;grid-template-columns:1.4fr .6fr;gap:30px;align-items:center}.feature-banner h2{font-size:36px;margin:10px 0}.feature-banner p{color:#f6d5dc;line-height:1.7}.banner-card{display:grid;grid-template-columns:1fr 1fr;gap:12px}.banner-card strong{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:16px;padding:22px;text-align:center;font-size:22px}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.info-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.info-grid article span{width:48px;height:48px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-size:20px}.info-grid h3{margin:16px 0 8px}.info-grid p{margin:0;color:var(--muted);line-height:1.6}
footer{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:35px;padding:38px 5vw;background:#4a0715;color:#fff}.footer-brand{display:flex;align-items:center;gap:14px}.footer-brand img{width:58px;height:58px;border-radius:50%}.footer-brand p{color:#e7bdc6;max-width:560px;margin:6px 0 0}.footer-links{display:flex;gap:18px;font-size:14px}footer>span{color:#e7bdc6}
@media(max-width:1120px){.desktop-nav{display:none}.category-grid{grid-template-columns:repeat(2,1fr)}.book-grid{grid-template-columns:repeat(3,1fr)}.hero-inner{grid-template-columns:1fr .55fr;gap:35px}}
@media(max-width:900px){.icon-btn{display:block}.btn-outline{display:none}.hero-inner{grid-template-columns:1fr}.hero-logo-card{display:none}.quick-links{grid-template-columns:repeat(2,1fr)}.layout{display:block}.sidebar{position:fixed;top:0;left:-310px;width:285px;height:100vh;z-index:60;box-shadow:var(--shadow);transition:.25s;overflow:auto;margin:0;border-radius:0}.sidebar.open{left:0}.sidebar-head button{display:block}.content{padding:18px 20px 50px}.book-grid{grid-template-columns:repeat(2,1fr)}.feature-banner{grid-template-columns:1fr}.info-grid{grid-template-columns:1fr}footer{grid-template-columns:1fr}}
@media(max-width:600px){.topbar{padding:0 16px}.top-actions .btn-primary{display:none}.brand small{display:none}.hero{padding:56px 18px 72px;background-position:62% center}.hero-overlay{background:linear-gradient(90deg,rgba(83,4,18,.95),rgba(165,8,37,.83))}.hero h1{font-size:39px}.hero p{font-size:16px}.search-shell{display:grid;grid-template-columns:38px 1fr}.search-shell button{grid-column:1/-1;width:100%}.hero-stats{gap:20px;justify-content:space-between}.hero-stats strong{font-size:22px}.quick-links{grid-template-columns:1fr;margin-top:-28px}.category-grid,.book-grid{grid-template-columns:1fr}.section-heading,.strip-heading{align-items:start;flex-direction:column}.section-heading h2{font-size:27px}.feature-banner{padding:26px}.feature-banner h2{font-size:29px}.banner-card strong{padding:16px;font-size:18px}.footer-links{flex-wrap:wrap}}

.page-hero{padding:54px 4vw;background:linear-gradient(135deg,#650615,#c8102e);color:white}
.page-hero .inner{max-width:1400px;margin:auto}
.page-hero h1{font-size:clamp(34px,5vw,56px);margin:10px 0}
.page-hero p{max-width:760px;color:#f7dce2;line-height:1.7}
.page-main{max-width:1400px;margin:0 auto;padding:42px 4vw 70px}
.toolbar{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap}
.toolbar input,.toolbar select{border:1px solid var(--line);background:white;border-radius:12px;padding:12px 14px}
.resource-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.exam-grid,.video-grid,.journal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.exam-card,.video-card,.journal-card,.auth-card,.profile-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 25px rgba(91,8,25,.05)}
.exam-card .tag,.video-card .tag,.journal-card .tag{display:inline-block;background:var(--primary-soft);color:var(--primary);font-weight:900;font-size:12px;border-radius:999px;padding:7px 10px}
.exam-card h3,.video-card h3,.journal-card h3{margin:16px 0 8px}
.exam-card p,.video-card p,.journal-card p{color:var(--muted);line-height:1.6}
.video-thumb{height:180px;border-radius:16px;background:linear-gradient(135deg,#650615,#c8102e);display:grid;place-items:center;color:white;font-size:42px;margin-bottom:16px}
.auth-wrap{min-height:calc(100vh - 78px);display:grid;place-items:center;padding:40px 20px;background:linear-gradient(135deg,#fff5f7,#f4f4f5)}
.auth-card{width:min(480px,100%)}
.auth-card h1{margin-top:0}.form-group{margin:15px 0}.form-group label{display:block;font-weight:800;margin-bottom:7px}.form-group input,.form-group select,.form-group textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:13px}
.profile-grid{display:grid;grid-template-columns:320px 1fr;gap:24px}.profile-avatar{width:110px;height:110px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-size:40px;font-weight:900;margin-bottom:16px}.progress-list{display:grid;gap:14px}.progress-item{background:white;border:1px solid var(--line);border-radius:14px;padding:16px}.progress-bar{height:8px;background:#eee;border-radius:999px;overflow:hidden;margin-top:10px}.progress-bar span{display:block;height:100%;background:var(--primary)}
.admin-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:1000px){.resource-grid{grid-template-columns:repeat(3,1fr)}.exam-grid,.video-grid,.journal-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.resource-grid,.exam-grid,.video-grid,.journal-grid{grid-template-columns:1fr}.profile-grid{grid-template-columns:1fr}.admin-form-grid{grid-template-columns:1fr}}