/* Education-first visual theme. Layout and lesson player dimensions are untouched. */
:root{color-scheme:dark;--edu-ink:#07142d;--edu-blue:#2563eb;--edu-teal:#14b8a6;--edu-violet:#7957dc}
html{background:#081a38}
body{min-height:100vh;background:radial-gradient(ellipse 65vw 50vw at -10% 15%,rgba(20,184,166,.28),transparent 75%),radial-gradient(ellipse 60vw 45vw at 105% 25%,rgba(124,58,237,.32),transparent 75%),radial-gradient(ellipse 60vw 50vw at 45% 90%,rgba(37,99,235,.25),transparent 75%),linear-gradient(130deg,#081a38 0%,#153b73 42%,#1d245b 75%,#0b294d 100%)!important;background-attachment:fixed!important;color:#eef5ff}
body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.24;background-image:radial-gradient(circle at center,rgba(183,226,255,.7) 1px,transparent 1.5px);background-size:42px 42px;mask-image:linear-gradient(90deg,black,transparent 55%,black)}
.navbar{background:rgba(5,17,43,.95)!important;border-bottom:1px solid rgba(125,211,252,.35);box-shadow:0 6px 24px rgba(2,8,28,.35)!important}
.logo a{color:#f3f8ff!important;text-shadow:none!important}
.nav-menu a{background:#edf5ff!important;color:#12376b!important;border:1px solid rgba(255,255,255,.25)}
.nav-menu a:hover{background:#bdf5e9!important;color:#073c4a!important}
.home{position:relative;z-index:1}
ul.liste{background:rgba(5,18,45,.88)!important;border:1px solid rgba(120,185,255,.25);box-shadow:0 15px 42px rgba(1,8,30,.28)!important;border-radius:15px!important}
ul.liste li{border-radius:10px!important;box-shadow:0 2px 10px rgba(0,0,0,.2)}
ul.liste li:hover{box-shadow:0 0 0 2px #5eead4,0 9px 22px rgba(20,184,166,.22)}
ul.liste li:hover img{transform:scale(1.045)!important}
h2.h21,h2.h22,h2.h23,h2{color:#fff}
h2.h21,h2.h23{background:linear-gradient(110deg,#2563eb,#0d9488)!important;box-shadow:5px 6px 0 rgba(2,12,40,.23)!important;border-radius:10px 10px 0 0!important}
footer{position:relative;z-index:1;color:#dbeafe!important}
@media(prefers-reduced-motion:no-preference){body{animation:eduAmbient 24s ease-in-out infinite alternate}@keyframes eduAmbient{from{background-position:0 0,0 0,0 0,0 0}to{background-position:2vw 3vw,-3vw 2vw,1vw -2vw,0 0}}}
@media(max-width:600px){body{background-attachment:scroll!important}.logo a{font-size:clamp(14px,4vw,22px)!important}}