:root {
        --c-dark: #003d99;
        --c-mid-dark: #0052cc;
        --c-main: #0066ff;
        --c-mid-light: #4d8dff;
        --c-light: #99bfff;
        --bg-dark: #0b0b0d;
        --bg-light: #f4f4f6;
        --glass-dark: rgba(18, 18, 22, 0.55);
        --glass-light: rgba(255, 255, 255, 0.65);
        --text-dark: #f5f5f7;
        --text-light: #1d1d1f;
        --blur: 28px;
        --r-xl: 20px;
        --r-l: 22px;
      }
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          Helvetica, Arial, sans-serif;
      }
      body {
        background: var(--bg-dark);
        color: var(--text-dark);
        transition: 0.4s;
        overflow-x: hidden;
      }
      body.light {
        background: var(--bg-light);
        color: var(--text-light);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--r-xl);
      }
      .glass {
        backdrop-filter: blur(var(--blur)) saturate(180%);
        -webkit-backdrop-filter: blur(var(--blur)) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--r-xl);
        box-shadow: 0 50px 100px rgba(0, 0, 0, 0.35);
      }
      body.dark .glass {
        background: var(--glass-dark);
      }
      body.light .glass {
        background: var(--glass-light);
      }

      /* NAVBAR */
      .navbar {
        position: fixed;
        top: 20px;
        left: 20px;
        right: 20px;
        padding: 20px 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        z-index: 1000;
      }

      /* logo */
      .logo {
        padding-left: 5%;
        font-weight: 600;
        letter-spacing: 0.4px;
        color: var(--c-main);
      }

      /* links */
      .nav-links {
        display: flex;
        gap: 35px;
      }

      .nav-links a {
        text-decoration: none;
        color: inherit;
        opacity: 0.8;
        font-size: 0.95rem;
      }

      .nav-links a:hover {
        opacity: 1;
      }

      /* darklight toggle */
      .theme-toggle {
        cursor: pointer;
        display: flex;
        align-items: center;
      }

      .desktop-toggle {
        padding-right: 5%;
      }

      .mobile-toggle {
        display: none;
        margin-top: 32px;
      }

      /* mobilemenu */
      .burger {
        display: none;
        position: relative;
        width: 42px;
        height: 42px;
        margin-right: 5%;
        background: var(--glass-dark);
        border-radius: 14px;
        backdrop-filter: blur(10px);
        cursor: pointer;
      }

      .burger span {
        position: absolute;
        left: 10px;
        right: 10px;
        height: 2px;
        background: currentColor;
        border-radius: 2px;
        transition: 0.35s ease;
      }

      .burger span:nth-child(1) {
        top: 13px;
      }
      .burger span:nth-child(2) {
        top: 20px;
      }
      .burger span:nth-child(3) {
        top: 27px;
      }

      /* x effect */
      #nav-toggle:checked + nav + .theme-toggle + .burger span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
      }
      #nav-toggle:checked + nav + .theme-toggle + .burger span:nth-child(2) {
        opacity: 0;
      }
      #nav-toggle:checked + nav + .theme-toggle + .burger span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
      }

      /* mobile */
      @media (max-width: 1024px) {
        .burger {
          display: block;
        }

        .desktop-toggle {
          display: none;
        }

        .mobile-toggle {
          display: flex;
        }

        .nav-links {
          position: fixed;
          top: 0;
          right: -100%;
          height: 100vh;
          width: 280px;
          background: var(--c-bg);
          backdrop-filter: blur(24px);
          flex-direction: column;
          padding: 120px 24px;
          gap: 20px;
          transition: right 0.4s ease;
        }

        #nav-toggle:checked ~ .nav-links {
          right: 0;
        }
      }

      a {
        cursor: pointer;
        text-decoration: none;
        color: var(--c-main);
        transition: .3s;
      }

      .highlight {
        color: var(--c-main);
        font-weight: 600;
      }

      .btn {
        padding: 18px 36px;
        border-radius: 20px;
        border: none;
        cursor: pointer;
        font-size: 0.95rem;
        font-weight: 500;
        transition: 0.25s;
      }
      .btn.primary {
        background: var(--c-main);
        color: #fff;
        box-shadow: 0 25px 50px var(--c-dark);
      }
      .btn.secondary {
        background: transparent;
        border: 1px solid rgba(255, 255, 255, 0.25);
        color: inherit;
      }
      .btn:hover {
        transform: translateY(-4px);
      }

            /* FOOTER */
      footer {
        padding: 70px 20px 40px;
        display: flex;
        justify-content: center;
      }
      .footer-inner {
        max-width: 1500px;
        width: 100%;
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 70px;
      }
      footer h4 {
        color: var(--c-main);
        margin-bottom: 20px;
      }
      footer a {
        display: block;
        text-decoration: none;
        color: inherit;
        opacity: 0.7;
        margin-bottom: 12px;
        font-size: 0.9rem;
      }
      footer a:hover {
        opacity: 1;
      }
      .copy {
        grid-column: 1/-1;
        margin-top: 70px;
        opacity: 0.5;
        font-size: 0.8rem;
      }

      .reveal {
  opacity: 0;
  transform: translateY(60px) scale(0.98);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(.2,.8,.2,1);
  will-change: opacity, transform;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reveal-left {
  transform: translateX(-80px);
}

.reveal-right {
  transform: translateX(80px);
}

.reveal-up {
  transform: translateY(80px);
}

.reveal-down {
  transform: translateY(-80px);
}

.reveal.show.reveal-left,
.reveal.show.reveal-right,
.reveal.show.reveal-up,
.reveal.show.reveal-down {
  transform: translate(0,0);
}

.locked {
        cursor: not-allowed;
        opacity: 0.4;
      }