* { 
      margin: 0; 
      padding: 0; 
      box-sizing: border-box; 
    }

    :root {
      --bg-color: #e8ecef;                   
      --overlay: rgba(220, 224, 230, 0.40);  
      --panel: rgba(240, 243, 246, 0.85);    
      --panel-strong: #e2e6ea;
      --border: rgba(0, 0, 0, 0.08);         
      --text: #1a1a1a;                       
      --muted: #555555;                      
      --btn: rgba(0, 0, 0, 0.05);            
      --btn-hover: rgba(0, 0, 0, 0.10);
      --auth-bg: rgba(240, 243, 246, 0.85);
      --ad-bg: rgba(228, 232, 237, 0.60);
      --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    }

    body.night, body.dark-mode {
      --bg-color: #0d0d0d;
      --overlay: rgba(0, 0, 0, 0.70);        
      --panel: rgba(18, 18, 18, 0.85);       
      --panel-strong: #121212;
      --border: rgba(255, 255, 255, 0.08);   
      --text: #f1f1f1;                       
      --muted: #aaaaaa;                      
      --btn: rgba(255, 255, 255, 0.06);      
      --btn-hover: rgba(255, 255, 255, 0.12);
      --auth-bg: rgba(20, 20, 20, 0.85);
      --ad-bg: rgba(10, 10, 10, 0.50);
      --shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    }

    html, body {
      height: 100%;
      font-family: 'Courier New', Courier, monospace;
      color: var(--text);
      background-image: url("/czot/bg.png");
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
      background-color: var(--bg-color);
      display: flex;
      flex-direction: column;
      transition: color 0.3s, background-color 0.3s;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      background: var(--overlay);
      
      z-index: 0;
      transition: background 0.3s;
    }

    header, .strona-uklad, .sektor-memiczny, footer, .chat-container {
      position: relative;
      z-index: 10;
    }

    a {
      color: var(--text);
      text-decoration: none;
    }

    a:hover {
      opacity: 0.8;
    }

    header {
      background: var(--panel);
      border-bottom: 1px solid var(--border);
      padding: 16px 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      backdrop-filter: blur(3px);
      -webkit-backdrop-filter: blur(3px);
      box-shadow: var(--shadow);
    }

    #topNotice {
      background: var(--panel-strong);
      padding: 10px;
      text-align: center;
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 15px;
      font-size: 14px;
      backdrop-filter: blur(8px);
    }

    #topNotice.hidden {
      display: none;
    }

    #logo {
      height: 38px;
      width: auto;
      cursor: pointer;
      transition: opacity 0.2s;
      display: block;
    }

    header nav {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    button, .lang-toggle, .theme-toggle, .bg-toggle {
      background: var(--btn);
      border: 1px solid var(--border);
      color: var(--text);
      padding: 8px 14px;
      border-radius: 12px;
      cursor: pointer;
      font-family: inherit;
      font-size: 14px;
      font-weight: 500;
      display: flex;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      transition: transform .15s, background .2s, border-color .2s, box-shadow .2s;
    }

    button:hover, .lang-toggle:hover, .theme-toggle:hover, .bg-toggle:hover {
      background: var(--btn-hover);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    }

    .strona-uklad {
      display: flex;
      justify-content: center;
      align-items: stretch;
      flex: 1; 
      max-width: 1400px;
      margin: 0 auto;
      padding: 24px;
      gap: 24px;
      width: 100%;
    }

    main {
      flex: 1; 
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      gap: 20px;
    }

    .sektor-memiczny {
      border: 1px solid var(--border);
      background: var(--ad-bg);
      backdrop-filter: blur(3px);
      -webkit-backdrop-filter: blur(3px);
      border-radius: 16px;
      display: flex;
      justify-content: center;
      align-items: center;
      text-align: center;
      overflow: hidden;
      color: var(--muted);
      font-size: 14px;
      box-shadow: var(--shadow);
    }

    .memiczny-content {
      padding: 20px;
      width: 100%;
      height: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      gap: 8px;
    }

    .lewo, .prawo {
      flex: 0 0 280px;
      min-height: 400px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .dol {
      max-width: 100%;
      width: 100%;
      min-height: 100px;
    }

    .auth-box {
      width: 100%;
      max-width: 480px;
      background: var(--auth-bg);
      border: 1px solid var(--border);
      padding: 28px;
      border-radius: 20px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow);
    }

    .auth-box h2 {
      text-align: center;
      margin-bottom: 20px;
      font-size: 20px;
      font-weight: 600;
      letter-spacing: -0.3px;
    }

    .menu-box {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .menu-box input[type="text"], input[type="text"] {
      width: 100%;
      padding: 10px 14px;
      background: var(--btn);
      border: 1px solid var(--border);
      color: var(--text);
      border-radius: 12px;
      font-family: inherit;
      outline: none;
      transition: border-color 0.2s;
    }

    .menu-box input[type="text"]:focus, input[type="text"]:focus {
      border-color: var(--muted);
    }

    .info-box, .countdown-box, .chat-container {
      background: var(--panel);
      border: 1px solid var(--border);
      padding: 20px;
      border-radius: 16px;
      font-size: 13px;
      backdrop-filter: blur(3px);
      -webkit-backdrop-filter: blur(3px);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .info-box div:first-child {
      font-size: 22px;
      font-weight: 700;
      letter-spacing: -0.5px;
    }

    .countdown-box div {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      border-bottom: 1px dashed var(--border);
    }
    .countdown-box div:last-child {
      border-bottom: none;
    }

    .chat-container[data-open="false"] {
      display: none;
    }

    .ripple {
      position: absolute;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.3);
      transform: scale(0);
      animation: rippleEffect 0.6s linear;
      pointer-events: none;
      z-index: 999;
    }

    @keyframes rippleEffect {
      to {
        transform: scale(4);
        opacity: 0;
      }
    }

    footer {
      text-align: center;
      padding: 20px;
      font-size: 13px;
      color: var(--muted);
      margin-top: auto; 
    }

    body.no-bg {
      background-image: none !important;
      background-color: var(--bg-color) !important;
    }

    @media (max-width: 1024px) {
      .strona-uklad {
        flex-direction: column;
        align-items: center;
      }
      .lewo, .prawo {
        width: 100%;
        max-width: 480px;
        flex: none;
      }
    }

    /* Aktywny licznik lekcji */
    #lessonInfo {
      padding: 12px 14px;
      border: 1px solid var(--border);
      border-radius: 10px;
      background: var(--btn);
      color: var(--text);
      line-height: 1.45;
      font-variant-numeric: tabular-nums;
    }

/* Układ uproszczonego panelu */
.panel-uklad {
  display: block;
  width: min(920px, calc(100% - 32px));
  max-width: none;
  margin: 32px auto;
  padding: 0;
}

.panel-glowny {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(360px, 1.1fr);
  align-items: stretch;
  gap: 20px;
  width: 100%;
}

.zegar-box,
.liczniki-box {
  width: 100%;
  min-width: 0;
  max-width: none;
  padding: 28px;
}

.zegar-box {
  justify-content: center;
  text-align: center;
}

.zegar-box h1,
.liczniki-box h2 {
  margin-bottom: 20px;
  font-size: 20px;
  letter-spacing: 0.03em;
}

#clock {
  margin-bottom: 8px;
  color: var(--text);
  font-size: clamp(42px, 7vw, 68px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.05em;
  line-height: 1;
}

.tekst-wyciszony {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

#lessonInfo {
  margin-top: 22px;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  background: var(--btn);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
}

.liczniki-box {
  gap: 0;
}

.liczniki-box > div {
  gap: 20px;
  padding: 11px 2px;
}

.liczniki-box > div span:last-child {
  color: var(--text);
  font-weight: 700;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

#topNotice button {
  flex: 0 0 auto;
  padding: 4px 9px;
}

header nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  background: var(--btn);
  text-decoration: none;
}

@media (max-width: 760px) {
  .panel-glowny {
    grid-template-columns: 1fr;
  }

  .panel-uklad {
    width: min(100% - 20px, 560px);
    margin: 14px auto 24px;
  }

  .zegar-box,
  .liczniki-box {
    padding: 22px 16px;
  }

  header nav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }
}