/* WVClassroom Tool Lab shared theme */

:root {
    --tl-bg: #f5f7ff;
    --tl-card: #ffffff;
    --tl-text: #182033;
    --tl-muted: #5d667a;
    --tl-border: #dfe5f5;
    --tl-blue: #2563eb;
    --tl-green: #16a34a;
    --tl-yellow: #facc15;
    --tl-orange: #f97316;
    --tl-purple: #7c3aed;
    --tl-radius: 22px;
    --tl-shadow: 0 12px 30px rgba(15, 23, 42, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(250, 204, 21, 0.22), transparent 28rem),
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.16), transparent 26rem),
        var(--tl-bg);
    color: var(--tl-text);
}

a {
    color: inherit;
}

.tool-lab-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 28px 0 48px;
}

.tool-lab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    margin-bottom: 28px;
}

.tool-lab-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.25rem;
}

.tool-lab-logo {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--tl-blue), var(--tl-purple));
    color: white;
    box-shadow: var(--tl-shadow);
}

.tool-lab-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tool-lab-nav a,
.tool-lab-button,
button.tool-lab-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 999px;
    padding: 10px 16px;
    background: #ffffff;
    color: var(--tl-text);
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    cursor: pointer;
}

.tool-lab-button.primary,
button.tool-lab-button.primary {
    background: linear-gradient(135deg, var(--tl-blue), var(--tl-purple));
    color: white;
}

.tool-lab-button.green,
button.tool-lab-button.green {
    background: linear-gradient(135deg, var(--tl-green), #22c55e);
    color: white;
}

.tool-lab-card {
    background: var(--tl-card);
    border: 1px solid var(--tl-border);
    border-radius: var(--tl-radius);
    box-shadow: var(--tl-shadow);
    padding: 22px;
}

.tool-lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}

.tool-lab-hero {
    background: linear-gradient(135deg, #ffffff, #eef4ff);
    border: 1px solid var(--tl-border);
    border-radius: 30px;
    box-shadow: var(--tl-shadow);
    padding: 34px;
    margin-bottom: 24px;
}

.tool-lab-hero h1 {
    margin: 0 0 12px;
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1;
}

.tool-lab-hero p {
    max-width: 760px;
    color: var(--tl-muted);
    font-size: 1.1rem;
    line-height: 1.55;
}

.tool-lab-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 999px;
    padding: 7px 12px;
    background: #eef4ff;
    color: #1d4ed8;
    font-weight: 800;
    font-size: 0.9rem;
}

.tool-lab-muted {
    color: var(--tl-muted);
}

.tool-lab-form-row {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.tool-lab-form-row label {
    font-weight: 800;
}

.tool-lab-form-row input,
.tool-lab-form-row textarea,
.tool-lab-form-row select {
    width: 100%;
    border: 1px solid var(--tl-border);
    border-radius: 14px;
    padding: 11px 12px;
    font: inherit;
    background: white;
}

.tool-lab-form-row textarea {
    min-height: 110px;
    resize: vertical;
}

.tool-lab-notice {
    border-radius: 18px;
    padding: 14px 16px;
    background: #ecfdf5;
    border: 1px solid #bbf7d0;
    color: #166534;
    font-weight: 700;
}

.tool-lab-warning {
    border-radius: 18px;
    padding: 14px 16px;
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
    font-weight: 700;
}

@media (max-width: 720px) {
    .tool-lab-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .tool-lab-hero {
        padding: 24px;
    }
}
    :root {
      --ink: #102033;
      --muted: #536274;
      --green: #10a05f;
      --blue: #2563eb;
      --purple: #7c3aed;
      --pink: #ec4899;
      --orange: #f97316;
      --yellow: #facc15;
      --sky: #38bdf8;
      --card: rgba(255,255,255,.88);
      --border: rgba(16,32,51,.12);
      --shadow: 0 22px 60px rgba(15, 23, 42, .12);
    }

    * {
      box-sizing: border-box;
    }

    html {
      min-height: 100%;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: ui-rounded, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 8% 12%, rgba(250, 204, 21, .55), transparent 16rem),
        radial-gradient(circle at 88% 8%, rgba(56, 189, 248, .45), transparent 18rem),
        radial-gradient(circle at 82% 82%, rgba(236, 72, 153, .28), transparent 18rem),
        linear-gradient(135deg, #f8fbff 0%, #ecfff5 45%, #fff7ed 100%);
      overflow-x: hidden;
    }

    .page-art {
      position: fixed;
      inset: 0;
      pointer-events: none;
      overflow: hidden;
      z-index: 0;
    }

    .bubble {
      position: absolute;
      border-radius: 999px;
      opacity: .55;
      filter: blur(.2px);
    }

    .bubble.one {
      width: 140px;
      height: 140px;
      left: -40px;
      top: 180px;
      background: rgba(16, 160, 95, .2);
    }

    .bubble.two {
      width: 210px;
      height: 210px;
      right: -80px;
      top: 260px;
      background: rgba(124, 58, 237, .16);
    }

    .bubble.three {
      width: 120px;
      height: 120px;
      left: 12%;
      bottom: 8%;
      background: rgba(249, 115, 22, .18);
    }

    .sparkle {
      position: absolute;
      font-size: 2rem;
      opacity: .35;
      color: var(--purple);
    }

    .sparkle.s1 { top: 9rem; left: 8%; }
    .sparkle.s2 { top: 5rem; right: 18%; color: var(--orange); }
    .sparkle.s3 { bottom: 8rem; right: 12%; color: var(--green); }

    .wrap {
      position: relative;
      z-index: 1;
      width: min(1160px, calc(100% - 2rem));
      margin: 0 auto;
      padding: 1.25rem 0 4rem;
    }

    .topnav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.25rem;
      padding: .85rem 1rem;
      background: rgba(255,255,255,.72);
      border: 1px solid var(--border);
      border-radius: 999px;
      backdrop-filter: blur(14px);
      box-shadow: 0 10px 28px rgba(15,23,42,.08);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: .65rem;
      font-weight: 950;
      letter-spacing: -.02em;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: white;
      font-size: 1.35rem;
      background: linear-gradient(135deg, var(--green), var(--blue));
      box-shadow: 0 10px 24px rgba(37,99,235,.22);
    }

    .navlinks {
      display: flex;
      gap: .55rem;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .navlinks a,
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .4rem;
      text-decoration: none;
      border-radius: 999px;
      border: 1px solid rgba(16,32,51,.14);
      padding: .68rem 1rem;
      font-weight: 850;
      color: var(--ink);
      background: rgba(255,255,255,.78);
      box-shadow: 0 8px 18px rgba(15,23,42,.06);
    }

    .btn.primary {
      color: white;
      border-color: transparent;
      background: linear-gradient(135deg, var(--green), var(--blue));
      box-shadow: 0 14px 30px rgba(37,99,235,.22);
    }

    .btn.fun {
      color: #3b2400;
      border-color: rgba(250,204,21,.75);
      background: linear-gradient(135deg, #fde68a, #fdba74);
    }

    .hero {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
      gap: 1.25rem;
      align-items: stretch;
      margin-bottom: 1.25rem;
    }

    .hero-main,
    .hero-side,
    .tool-card,
    .notice {
      background: var(--card);
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
    }

    .hero-main {
      border-radius: 34px;
      padding: clamp(1.5rem, 4vw, 3rem);
      position: relative;
      overflow: hidden;
    }

    .hero-main::after {
      content: "";
      position: absolute;
      width: 260px;
      height: 260px;
      right: -90px;
      bottom: -100px;
      border-radius: 999px;
      background:
        radial-gradient(circle, rgba(250,204,21,.55), transparent 60%),
        radial-gradient(circle at 30% 30%, rgba(236,72,153,.35), transparent 50%);
      z-index: -1;
    }

    .label {
      display: inline-flex;
      align-items: center;
      gap: .45rem;
      width: fit-content;
      border-radius: 999px;
      padding: .45rem .75rem;
      font-size: .78rem;
      font-weight: 950;
      letter-spacing: .05em;
      text-transform: uppercase;
      color: #064e3b;
      border: 1px solid rgba(16,160,95,.25);
      background: rgba(220,252,231,.8);
    }

    h1 {
      margin: .85rem 0;
      max-width: 820px;
      font-size: clamp(2.7rem, 7vw, 5.8rem);
      line-height: .92;
      letter-spacing: -.075em;
    }

    .gradient-text {
      background: linear-gradient(135deg, var(--green), var(--blue), var(--purple), var(--pink));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .lead {
      max-width: 720px;
      color: var(--muted);
      font-size: clamp(1.08rem, 2vw, 1.28rem);
      line-height: 1.62;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: .75rem;
      margin-top: 1.35rem;
    }

    .hero-side {
      border-radius: 34px;
      padding: 1.35rem;
      display: grid;
      gap: .85rem;
      align-content: center;
    }

    .mini-tool {
      display: flex;
      gap: .85rem;
      align-items: center;
      padding: .85rem;
      border-radius: 20px;
      border: 1px solid rgba(16,32,51,.1);
      background: rgba(255,255,255,.72);
    }

    .mini-icon {
      width: 48px;
      height: 48px;
      flex: 0 0 48px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      color: white;
      font-size: 1.35rem;
      font-weight: 950;
    }

    .mini-tool:nth-child(1) .mini-icon { background: linear-gradient(135deg, var(--green), var(--sky)); }
    .mini-tool:nth-child(2) .mini-icon { background: linear-gradient(135deg, var(--purple), var(--pink)); }
    .mini-tool:nth-child(3) .mini-icon { background: linear-gradient(135deg, var(--orange), var(--yellow)); }

    .mini-tool h3 {
      margin: 0 0 .15rem;
      font-size: 1rem;
    }

    .mini-tool p {
      margin: 0;
      color: var(--muted);
      font-size: .9rem;
      line-height: 1.35;
    }

    .section-title {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 1rem;
      margin: 1.75rem 0 1rem;
    }

    .section-title h2 {
      margin: 0;
      font-size: clamp(1.7rem, 3vw, 2.4rem);
      letter-spacing: -.04em;
    }

    .section-title p {
      margin: .25rem 0 0;
      color: var(--muted);
    }

    .tool-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 1rem;
    }

    .tool-card {
      position: relative;
      min-height: 245px;
      padding: 1.25rem;
      border-radius: 28px;
      overflow: hidden;
      transition: transform .18s ease, box-shadow .18s ease;
    }

    .tool-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 28px 70px rgba(15,23,42,.16);
    }

    .tool-card::after {
      content: "";
      position: absolute;
      width: 150px;
      height: 150px;
      right: -54px;
      top: -54px;
      border-radius: 999px;
      opacity: .45;
      background: var(--accent, rgba(56,189,248,.35));
    }

    .tool-icon {
      width: 58px;
      height: 58px;
      border-radius: 22px;
      display: grid;
      place-items: center;
      font-size: 1.65rem;
      color: white;
      background: var(--icon, linear-gradient(135deg, var(--green), var(--blue)));
      box-shadow: 0 14px 26px rgba(15,23,42,.14);
    }

    .tool-card h3 {
      margin: 1rem 0 .45rem;
      font-size: 1.35rem;
    }

    .tool-card p {
      color: var(--muted);
      line-height: 1.55;
      margin-bottom: 1rem;
    }

    .available {
      --accent: rgba(16,160,95,.25);
      --icon: linear-gradient(135deg, var(--green), var(--blue));
    }

    .calc {
      --accent: rgba(250,204,21,.34);
      --icon: linear-gradient(135deg, var(--orange), var(--yellow));
    }

    .research {
      --accent: rgba(124,58,237,.22);
      --icon: linear-gradient(135deg, var(--purple), var(--pink));
    }

    .citation {
      --accent: rgba(56,189,248,.28);
      --icon: linear-gradient(135deg, var(--blue), var(--sky));
    }

    .writing {
      --accent: rgba(236,72,153,.2);
      --icon: linear-gradient(135deg, var(--pink), var(--orange));
    }

    .creative {
      --accent: rgba(16,160,95,.2);
      --icon: linear-gradient(135deg, var(--green), var(--yellow));
    }

    .status {
      display: inline-flex;
      width: fit-content;
      border-radius: 999px;
      padding: .28rem .6rem;
      font-size: .72rem;
      font-weight: 950;
      letter-spacing: .05em;
      text-transform: uppercase;
      background: rgba(255,255,255,.72);
      border: 1px solid rgba(16,32,51,.12);
    }

    .status.live {
      color: #065f46;
      background: rgba(220,252,231,.86);
      border-color: rgba(16,185,129,.25);
    }

    .notice {
      margin-top: 1.25rem;
      border-radius: 24px;
      padding: 1.1rem 1.25rem;
      display: flex;
      gap: .85rem;
      align-items: flex-start;
      border-color: rgba(249,115,22,.26);
      background: rgba(255,247,237,.86);
      color: #5f370e;
    }

    .resource-link-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: .85rem;
      margin-top: 1rem;
    }

    .resource-link {
      display: flex;
      align-items: flex-start;
      gap: .75rem;
      padding: 1rem;
      border-radius: 22px;
      text-decoration: none;
      color: var(--ink);
      background: rgba(255,255,255,.78);
      border: 1px solid rgba(16,32,51,.12);
      box-shadow: 0 12px 28px rgba(15,23,42,.07);
      transition: transform .18s ease, box-shadow .18s ease;
    }

    .resource-link:hover {
      transform: translateY(-3px);
      box-shadow: 0 20px 42px rgba(15,23,42,.12);
    }

    .resource-link-icon {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: white;
      font-size: 1.25rem;
      background: linear-gradient(135deg, var(--blue), var(--purple));
    }

    .resource-link strong {
      display: block;
      margin-bottom: .18rem;
    }

    .resource-link span {
      display: block;
      color: var(--muted);
      font-size: .9rem;
      line-height: 1.35;
    }

    .notice strong {
      display: block;
      margin-bottom: .15rem;
    }

    .footer {
      padding: 2rem 0 0;
      color: var(--muted);
      text-align: center;
      font-size: .95rem;
    }

    @media (max-width: 940px) {
      .hero {
        grid-template-columns: 1fr;
      }

      .tool-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 640px) {
      .topnav {
        border-radius: 24px;
        align-items: flex-start;
        flex-direction: column;
      }

      .navlinks {
        justify-content: flex-start;
      }

      .hero-main,
      .hero-side {
        border-radius: 26px;
      }

      .tool-grid {
        grid-template-columns: 1fr;
      }

      .resource-link-grid {
        grid-template-columns: 1fr;
      }

      .section-title {
        align-items: flex-start;
        flex-direction: column;
      }
    }

/* Reference sheet cards */
.tool-card.formula .tool-icon {
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  color: #ffffff;
}

.tool-card.geometry .tool-icon {
  background: linear-gradient(135deg, #d946ef, #f97316);
  color: #ffffff;
}