:root {
  --bg: #f3f7fb;
  --surface: #ffffff;
  --text: #152033;
  --muted: #5f6f84;
  --border: #d9e4f0;
  --accent: #0c6adf;
  --accent-soft: #e9f2ff;
  --glow-left: rgba(12, 106, 223, 0.12);
  --glow-right: rgba(14, 165, 233, 0.1);
  --logo-grad-start: #eaf3ff;
  --logo-grad-end: #d8e9ff;
  --logo-border: #c9ddf6;
}

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

body {
  min-height: 100vh;
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, var(--glow-left), transparent 42%),
    radial-gradient(circle at 100% 0%, var(--glow-right), transparent 40%),
    var(--bg);
  display: flex;
  flex-direction: column;
}

body[data-theme="sand"] {
  --bg: #f8f4ed;
  --surface: #fffdf9;
  --text: #312415;
  --muted: #73624f;
  --border: #e5d7c4;
  --accent: #c16a18;
  --accent-soft: #fff3e5;
  --glow-left: rgba(193, 106, 24, 0.12);
  --glow-right: rgba(211, 154, 80, 0.12);
  --logo-grad-start: #fff4e6;
  --logo-grad-end: #ffe6c5;
  --logo-border: #f2d7b3;
}

body[data-theme="mint"] {
  --bg: #eef8f5;
  --surface: #fbfffd;
  --text: #163328;
  --muted: #4f7266;
  --border: #cfe7dd;
  --accent: #0f8e66;
  --accent-soft: #e8faf3;
  --glow-left: rgba(15, 142, 102, 0.12);
  --glow-right: rgba(25, 179, 132, 0.1);
  --logo-grad-start: #e9fff7;
  --logo-grad-end: #cff6e6;
  --logo-border: #bde8d7;
}

.site-header,
main,
.site-footer {
  width: min(1080px, 92vw);
  margin: 0 auto;
}

.site-header {
  padding: 36px 0 6px;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-size: clamp(1.8rem, 4.6vw, 3rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  font-weight: 800;
  color: #123052;
}

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  display: inline-flex;
  gap: 4px;
  box-shadow: 0 6px 20px rgba(12, 35, 77, 0.09);
}

.theme-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 8px 12px;
  cursor: pointer;
}

.theme-btn.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

main {
  flex: 1;
  padding: 28px 0;
}

.tools-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: 0 8px 24px rgba(12, 35, 77, 0.08);
  opacity: 0;
  transform: translateY(8px);
  animation: enter 400ms ease forwards;
  transition: transform 200ms, box-shadow 200ms, border-color 200ms;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: #bfd4ed;
  box-shadow: 0 16px 34px rgba(12, 35, 77, 0.14);
}

.tool-logo {
  width: 72px;
  height: 72px;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--logo-grad-start) 0%, var(--logo-grad-end) 100%);
  border: 1px solid var(--logo-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}

.tool-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: scale(var(--logo-scale, 1));
  transform-origin: center;
}

.tool-logo img.remove-white-bg {
  mix-blend-mode: multiply;
}

.tool-logo-fallback {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #1f4f82;
}

.tool-content {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tool-card h4 {
  font-size: 1.08rem;
  font-weight: 700;
}

.tool-card p {
  font-size: 0.94rem;
  color: var(--muted);
  line-height: 1.5;
  width: 100%;
}

.card-cta {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 3px;
}

.site-footer {
  padding: 16px 0 24px;
  font-size: 0.78rem;
  color: #7b8ba1;
}

@media (max-width: 640px) {
  .site-header {
    padding-top: 24px;
  }

  .header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .theme-toggle {
    width: 100%;
    max-width: 320px;
  }

  .theme-btn {
    flex: 1;
    text-align: center;
  }

  .tool-card {
    padding: 14px;
    gap: 14px;
  }

  .tool-logo {
    width: 58px;
    height: 58px;
    border-radius: 12px;
  }

  .tool-card h4 {
    font-size: 1rem;
  }

  .tool-card p {
    font-size: 0.9rem;
  }
}

@keyframes enter {
  to { opacity: 1; transform: translateY(0); }
}