:root{color-scheme:dark;--blue:#65c9ff;--muted:#939ba5;--border:#303c49}*{box-sizing:border-box}body{margin:0;min-height:100vh;padding:28px 20px;background:radial-gradient(ellipse at 65% 35%,#17304455,transparent 60%),#070b10;color:#f0f3f6;font-family:Arial,Helvetica,sans-serif;display:grid;place-items:center}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.shell{width:min(1480px,100%);display:grid;grid-template-columns:58% 42%;border:1px solid #52606c;border-radius:21px;overflow:hidden;box-shadow:0 22px 90px #0008;background:#03070a}.visual{position:relative;min-width:0;background:#070d15}.visual>img{width:100%;height:100%;object-fit:cover;display:block}.window-dots{position:absolute;left:26px;top:18px;display:flex;gap:9px}.window-dots i{width:13px;height:13px;border-radius:50%;background:#ff615c}.window-dots i:nth-child(2){background:#ffc85a}.window-dots i:nth-child(3){background:#62bd69}.panel{padding:65px clamp(28px,4.3vw,83px) 30px;background:radial-gradient(ellipse at 80% 0,#17263366,transparent 52%),linear-gradient(135deg,#070c10,#020406);display:flex;flex-direction:column;justify-content:center}.brand{display:grid;justify-items:center;gap:11px;margin-bottom:39px}.brand svg{width:140px;height:82px}.brand>span{font-size:24px;letter-spacing:15px;margin-right:-15px;font-weight:300}.heading{text-align:center;margin-bottom:32px}h1{font-size:36px;letter-spacing:-1px;margin:0 0 12px;font-weight:600}.heading p{color:#a7adb6;font-size:18px;margin:0;line-height:1.5}.field{margin-bottom:17px}.field>label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.input-wrap{display:flex;align-items:center;position:relative;gap:22px;border:1px solid var(--border);border-radius:14px;background:linear-gradient(120deg,#090c0f,#141d2566);padding:0 20px;min-height:60px;box-shadow:inset 0 1px 1px #fff1}.input-wrap:focus-within{border-color:var(--blue);box-shadow:0 0 18px #168df326}.input-wrap>span{font-size:27px;color:#abb3bd}.lock{width:24px;height:26px;flex-shrink:0;color:#abb3bd}input:not([type=checkbox]){width:100%;min-width:0;background:transparent;border:0;outline:none;color:#eef4fc;padding:19px 0;font-size:15px}input::placeholder{color:#7d8792}.eye{padding:5px;background:none;border:0;color:#a9b2bd;display:grid;place-items:center}.eye svg{width:24px;height:24px}.options{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0 27px;font-size:13px}.remember{display:flex;align-items:center;gap:8px;color:#a6adb5;cursor:pointer}.remember input{width:21px;height:21px;accent-color:#219eea;margin:0}.text-button{background:none;border:0;color:var(--blue);padding:0;line-height:1.5}.text-button:hover{text-decoration:underline}.primary{width:100%;min-height:63px;display:flex;align-items:center;justify-content:center;position:relative;gap:20px;border:1px solid #8bdeff;border-radius:15px;background:linear-gradient(110deg,#1772c2,#124c87 60%,#168ee0);box-shadow:inset 0 0 10px #5ed1ff,0 0 22px #008dff44;color:white;font-size:19px;font-weight:600}.primary>span:last-child:not(:first-child){position:absolute;right:24px;font-size:28px;font-weight:400}.primary:hover{filter:brightness(1.15)}.status{font-size:13px;line-height:1.6;color:#a7dfff;margin:12px 0 0}.status:empty{display:none}.divider{display:flex;align-items:center;gap:22px;color:#7f8995;font-size:13px;margin:35px 0 26px;white-space:nowrap}.divider:before,.divider:after{content:"";height:1px;background:#3c444e;flex:1}.social-buttons{display:flex;gap:16px}.social-buttons button{flex:1;border:1px solid #2e3944;border-radius:13px;min-height:55px;background:linear-gradient(120deg,#080b0e,#131b2366);color:#e6eaf0;display:flex;align-items:center;justify-content:center;gap:13px}.social-buttons button:hover{border-color:var(--blue)}.google{font-size:25px;font-weight:bold;background:conic-gradient(#4285f4 0 90deg,#34a853 90deg 170deg,#fbbc05 170deg 230deg,#ea4335 230deg 285deg,#4285f4 285deg);color:transparent;background-clip:text}.apple{font-size:23px;color:#eef4fa}.switch{text-align:center;color:#939da8;font-size:15px;margin:40px 0 49px;line-height:1.7}.switch button{font-weight:600;margin-left:6px}footer{display:flex;justify-content:space-between;align-items:center;gap:13px;color:#3b4650}footer button{background:none;border:0;color:#88929c;padding:0;font-size:12px}footer button:hover{color:var(--blue)}.demo{text-align:center;color:#646e78;font-size:10px;margin:18px 0 0}.error{display:block;color:#ffaaa6;font-size:12px;line-height:1.5;margin-top:5px}.error:empty{display:none}[aria-invalid=true]{color:#ffb2ae!important}[hidden]{display:none!important}dialog{max-width:430px;background:#0d1721;border:1px solid #3d769c;border-radius:18px;color:#e8f3ff;padding:30px;box-shadow:0 0 50px #127acc33}dialog::backdrop{background:#000a;backdrop-filter:blur(5px)}dialog p{line-height:1.65;color:#b5c4d1}dialog .primary{min-height:44px;font-size:15px}@media(min-width:1600px){.panel{padding-top:75px;padding-bottom:38px}}@media(max-width:1050px){body{padding:18px}.shell{grid-template-columns:50% 50%}.panel{padding:35px 27px 24px}.brand{margin-bottom:26px}.brand svg{width:110px;height:65px}.brand>span{font-size:19px;letter-spacing:12px}.visual>img{object-position:46% center}.options{font-size:11px}.heading p{font-size:15px}h1{font-size:30px}.switch{margin:30px 0}.input-wrap{gap:13px;padding:0 15px}}@media(max-width:700px){body{padding:12px;display:block}.shell{grid-template-columns:1fr;max-width:470px;margin:auto}.visual{height:270px}.visual>img{object-fit:cover;object-position:center 43%}.window-dots{display:none}.panel{padding:30px 25px 22px}.brand{margin-bottom:25px}.brand svg{height:56px}.heading{margin-bottom:25px}.options{font-size:12px}.switch{margin:28px 0 35px}footer{gap:8px}footer button{font-size:10px}}@media(prefers-reduced-motion:no-preference){button{transition:filter .18s,border-color .18s}.panel{animation:appear .45s ease-out}@keyframes appear{from{opacity:.3;transform:translateY(8px)}to{opacity:1;transform:none}}}

/* Adaptation des écrans : formulaire lisible et sans défilement horizontal. */
body{padding:clamp(0px,2vw,28px);min-height:100svh}
.shell{grid-template-columns:minmax(0,1.12fr) minmax(0,1fr)}
.panel{min-width:0;padding:clamp(30px,4vw,65px) clamp(24px,4vw,65px)}
.visual>img{object-position:center center}
.window-dots{display:none}
@media(min-width:1100px){.shell{min-height:min(900px,calc(100svh - 56px))}}
@media(max-width:1099px) and (min-width:701px){
 .shell{grid-template-columns:minmax(0,.85fr) minmax(0,1fr)}
 .panel{padding:35px 24px}.visual>img{object-position:52% center}
 .options{flex-wrap:wrap;gap:14px;font-size:13px}
 .brand{margin-bottom:28px}.switch{margin:30px 0}
 footer{flex-wrap:wrap;justify-content:center;row-gap:12px}
}
@media(max-width:700px){
 body{padding:0;background:#03070a}
 .shell{display:block;width:100%;max-width:none;border:0;border-radius:0;min-height:100svh;box-shadow:none}
 .visual{display:none}
 .panel{min-height:100svh;width:100%;padding:36px max(22px,calc((100vw - 430px)/2)) 24px;justify-content:center;background:radial-gradient(ellipse at 50% 5%,#17426966,transparent 48%),#03070a}
 .brand{gap:10px;margin-bottom:32px}.brand svg{width:108px;height:65px}
 .brand>span{font-size:21px;letter-spacing:12px}
 h1{font-size:32px}.heading p{font-size:16px}.heading{margin-bottom:28px}
 .input-wrap{min-height:60px;border-radius:12px;padding:0 16px}
 input:not([type=checkbox]){font-size:16px;padding:19px 0}
 .eye{min-width:36px;min-height:40px}
 .options{font-size:13px;gap:12px;flex-wrap:wrap;margin:18px 0 25px}
 .remember{min-height:32px}.remember input{width:22px;height:22px}
 .primary{min-height:60px;font-size:18px}.social-buttons button{min-height:55px;font-size:16px}
 .divider{margin:28px 0 22px}.switch{font-size:14px;margin:30px 0 36px}
 footer{justify-content:center;flex-wrap:wrap;gap:12px}footer button{font-size:12px;min-height:30px}
 .demo{line-height:1.6;font-size:11px;margin-top:12px}
}
@media(max-width:360px){.panel{padding-left:18px;padding-right:18px}.options{font-size:12px}.social-buttons{gap:10px}footer{gap:8px}footer button{font-size:11px}}
/* Écran complet : composition ajustée à la hauteur disponible. */
@media(min-width:701px){
 body{height:100svh;min-height:0;padding:12px;overflow:hidden}
 .shell{height:100%;min-height:0!important;width:min(1480px,100%);grid-template-columns:minmax(0,1.12fr) minmax(0,1fr)}
 .visual{min-height:0;overflow:hidden}.visual>img{height:100%;object-fit:fill}
 .panel{height:100%;min-height:0;padding:clamp(12px,3svh,32px) clamp(22px,3vw,56px);justify-content:space-evenly;gap:0}
 .brand{margin:0;gap:6px}.brand svg{height:clamp(35px,8svh,75px);width:120px}.brand>span{font-size:clamp(15px,2.7svh,23px);letter-spacing:12px}
 .heading{margin:0}h1{font-size:clamp(23px,4svh,36px);margin-bottom:7px}.heading p{font-size:clamp(12px,2svh,17px)}
 .field{margin-bottom:clamp(8px,1.7svh,16px)}.input-wrap{min-height:0;height:clamp(36px,7svh,60px);border-radius:11px}
 input:not([type=checkbox]){padding:8px 0;font-size:14px}.options{margin:8px 0 13px;font-size:12px;flex-wrap:nowrap}
 .primary{min-height:0;height:clamp(38px,7svh,60px);font-size:17px;border-radius:12px}
 #auth-form,#social{width:100%}.divider{margin:10px 0 14px;font-size:12px}.social-buttons button{min-height:0;height:clamp(34px,6svh,54px)}
 .switch{margin:8px 0;font-size:13px}footer{gap:10px;flex-wrap:nowrap}footer button{font-size:11px}.demo{margin:0;font-size:9px}
 .status{font-size:11px;line-height:1.3;margin-top:6px}.error{font-size:10px;margin-top:2px;line-height:1.2}
}
@media(max-width:700px){
 body{height:100svh;min-height:0;overflow:hidden}
 .shell{height:100svh;min-height:0;display:grid;grid-template-rows:clamp(95px,23svh,210px) minmax(0,1fr)}
 .visual{display:block;height:100%;min-height:0;overflow:hidden}
 .visual>img{width:100%;height:100%;object-fit:cover;object-position:center 55%}
 .panel{height:100%;min-height:0;padding:8px max(20px,calc((100vw - 430px)/2)) 8px;justify-content:space-evenly;gap:0}
 .brand{margin:0;gap:2px;display:flex;justify-content:center;align-items:center}.brand svg{height:30px;width:44px}.brand>span{font-size:16px;letter-spacing:7px;margin-right:-7px}
 .heading{margin:0}h1{font-size:24px;margin:0 0 3px}.heading p{font-size:12px;line-height:1.3}
 #auth-form,#social{width:100%}.field{margin-bottom:7px}.input-wrap{height:clamp(34px,5.8svh,48px);min-height:0;border-radius:10px;gap:12px}
 input:not([type=checkbox]){font-size:16px;padding:7px 0}.input-wrap>span{font-size:23px}.lock{height:22px}.eye{min-height:30px}
 .options{margin:4px 0 8px;font-size:11px;flex-wrap:nowrap;gap:5px}.remember{min-height:25px;gap:6px}.remember input{width:18px;height:18px}
 .primary{height:clamp(35px,5.8svh,48px);min-height:0;font-size:16px;border-radius:10px}
 .divider{margin:5px 0 8px;font-size:11px;gap:13px}.social-buttons button{height:clamp(32px,5svh,43px);min-height:0;font-size:14px;border-radius:10px}
 .switch{margin:4px 0;font-size:12px;line-height:1.4}footer{gap:9px;flex-wrap:nowrap}footer button{font-size:10px;min-height:22px}.demo{font-size:8px;margin:0;line-height:1.2}
 .status{font-size:10px;line-height:1.25;margin-top:4px}.error{font-size:10px;line-height:1.1;margin-top:2px}
}
@media(max-height:550px) and (max-width:700px){
 .shell{grid-template-rows:0 minmax(0,1fr)}.visual{visibility:hidden}.panel{padding-top:5px;padding-bottom:5px}.brand svg{height:22px}h1{font-size:20px}.heading p{font-size:11px}.demo{display:none}
}