/* css responsive */

    *{box-sizing:border-box}
	
	a{
    color: #dddddd;
    cursor: pointer;
    text-decoration: none;
	}

    body{
      margin:0;
      font-family:'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
      color:#152027;
      background:#f3f7fb;
      line-height:1.35;
    }

   
    header{
      background:
        radial-gradient(700px 260px at 38% 50%, rgba(244,196,48,.18), transparent 60%),
        linear-gradient(135deg, #1b7fb1, #3fa9d6);
      color:#fff;
      padding:18px 16px;
    }
    .head-wrap{
      max-width:980px;
      margin:0 auto;
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .head-title{
      margin:0;
      font-size:1.35rem;
      font-weight:800;
      line-height:1.05;
      text-shadow:0 1px 2px rgba(0,0,0,.18);
    }
    .head-sub{
      margin:8px 0 0 0;
      color:rgba(255,255,255,.88);
      font-weight:500;
      font-size:.95rem;
    }
    .head-back{
      color:#fff;
      text-decoration:none;
      font-weight:800;
      padding:10px 12px;
      border-radius:12px;
      border:1px solid rgba(255,255,255,.35);
      background:rgba(255,255,255,.10);
      white-space:nowrap;
    }
    .head-back:hover{filter:brightness(1.05)}

    /* Conteneurs */
    .exo-container{
      max-width:650px;
      margin:18px auto 12px auto;
      padding:0;
      background:#ffffff;
      border:1px solid rgba(10,58,90,.14);
      border-radius:16px;
      box-shadow:0 10px 24px rgba(10,58,90,.10);
      overflow:hidden;
    }

    .exo-title{
      display:flex;
      align-items:center;
      justify-content:center;
      padding:14px 14px;
      background:#a2a2a2;
        
      color:#fff;
      font-weight:800;
      font-size:1.05rem;
      letter-spacing:.2px;
    }

    .exo-title-bas{
      display:flex;
      align-items:center;
      justify-content:center;
      padding:14px 14px;
      background:#a2a2a2;
        
      color:#fff;
      font-weight:normal;
      font-size:1rem;
      letter-spacing:.2px;
    }
	
    .exo-body{
      padding:16px;
    }

    .question-box{
      text-align:center;
      margin-bottom:16px;
      font-size:1.2rem;
      font-weight:800;
      color:#152027;
    }

    .answers{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:10px;
      margin-bottom:12px;
    }
    @media (max-width: 520px){
      .answers{grid-template-columns:1fr}
    }

    .answer-btn{
      padding:12px 12px;
      border:2px solid rgba(10,58,90,.14);
      border-radius:12px;
      background:#dddddd;
      color:#152027;
      font-size:1rem;
      font-weight:800;
      cursor:pointer;
      
    }
    .answer-btn:hover{
      border:2px solid black;
    }

    .feedback{
      margin-top:10px;
      padding:10px 12px;
      border-radius:12px;
      font-weight:800;
      /* display:none; */
      text-align:center;
      white-space:pre-line;
      border:1px solid rgba(0,0,0,.06);
    }
	
	.correct{
      background:rgba(31,182,166,.18);
      color:#0b4b44;
    }
    .incorrect{
      background:rgba(220,53,69,.12);
      color:#7a1d28;
    }

    .next-wrap{
      display:flex;
      justify-content:center;
      margin-top:10px;
    }
	
	.chrono-btn{
      margin-top:4px;
      /*display:none;*/
      padding:11px 16px;
      border-radius:12px;
	  border: 3px solid #525252;
      background-color: #999999;
      color: white;
      font-size:1.3rem;
      font-weight:900;
      cursor:default;
    }
	
	.stats-actions{
      margin-top:12px;
      display:flex;
      justify-content:center;
      gap:10px;
    }
    .valid-btn{
      margin-top:4px;
      /*display:none;*/
      padding:11px 16px;
      border-radius:12px;
	  border: 3px solid #525252;
      background-color: #999999;
      color: white;
      font-size:1rem;
      font-weight:900;
      cursor:pointer;
    }
    .valid-btn:hover{
	  background-color:#525252;
	  border:3px solid red;
	  color:orange;
	}

   
    .restart-btn{
      padding:11px 16px;
      border:none;
      border-radius:12px;
      background:linear-gradient(180deg, rgba(244,196,48,1), rgba(244,196,48,.86));
      color:#1b1b1b;
      font-weight:900;
      cursor:pointer;
    }
    .restart-btn:hover{filter:brightness(.97)}

/* cyrillic-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2ZL7SUc.woff2) format('woff2');
  unicode-range: U+1F00-1FFF;
}
/* greek */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1pL7SUc.woff2) format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2pL7SUc.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7SUc.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, 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;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2ZL7SUc.woff2) format('woff2');
  unicode-range: U+1F00-1FFF;
}
/* greek */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1pL7SUc.woff2) format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2pL7SUc.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7SUc.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, 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;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2JL7SUc.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa0ZL7SUc.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* greek-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2ZL7SUc.woff2) format('woff2');
  unicode-range: U+1F00-1FFF;
}
/* greek */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1pL7SUc.woff2) format('woff2');
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
/* vietnamese */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa2pL7SUc.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa25L7SUc.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, 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;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}