/* ===================================================================
   earth87human · Home / Tools hub — Tomato Hero light theme
   Zero dependencies. Pure CSS.
   =================================================================== */

:root {
  --bg:         #faf6f1;
  --bg-soft:    #f1ecdf;
  --card:       #ffffff;
  --border:     rgba(42, 42, 45, 0.08);
  --border-hi:  rgba(232, 95, 77, 0.35);
  --ink:        #2a2a2d;
  --ink-dim:    #5e5e63;
  --ink-faint:  #9a9aa0;
  --tomato:     #e85f4d;
  --tomato-hi:  #ff7f69;
  --tomato-soft:#fdebe7;
  --amber:      #f1c75a;

  /* Per-tool accents (used for icon tint backgrounds) */
  --fb-tint:    #fef0d8;
  --mt-tint:    #e6f0fa;
  --pm-tint:    #fdebe7;
  --wh-tint:    #f3eef9;
  --cf-tint:    #fef8e0;
  --ng-tint:    #fdebe7;
  --dc-tint:    #f0ece6;
  --ce-tint:    #fde8e5;
}

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

.app {
  max-width: 920px;
  margin: 0 auto;
  padding: clamp(16px, 4vw, 28px) clamp(16px, 5vw, 32px) 60px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--tomato);
  color: #fff;
  padding: 10px 16px;
  font-weight: 600;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ============ Top bar ============ */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: clamp(40px, 8vw, 72px);
  gap: 12px;
}
.brand {
  font-family: Georgia, "Noto Serif TC", serif;
  font-size: clamp(15px, 3.6vw, 17px);
  color: var(--tomato);
  text-decoration: none;
  letter-spacing: 0.3px;
  font-weight: 700;
}
.brand:hover { opacity: 0.8; }
.lang-switcher {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 32px 8px 12px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--ink-dim) 50%),
    linear-gradient(135deg, var(--ink-dim) 50%, transparent 50%);
  background-position: calc(100% - 14px) 50%, calc(100% - 9px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  max-width: 190px;
  transition: border-color 0.15s;
}
.lang-switcher:hover  { border-color: var(--border-hi); }
.lang-switcher:focus-visible {
  outline: 2px solid var(--tomato);
  outline-offset: 1px;
}

/* ============ Hero ============ */
.hero {
  text-align: center;
  margin-bottom: clamp(40px, 8vw, 68px);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}
.hero-eyebrow {
  font-family: Georgia, serif;
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--tomato);
  margin-bottom: 12px;
  font-weight: 600;
}
.hero-title {
  font-family: Georgia, "Noto Serif TC", serif;
  font-size: clamp(40px, 9vw, 64px);
  color: var(--ink);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.05;
  font-weight: 700;
}
.hero-sub {
  font-size: clamp(16px, 3.5vw, 19px);
  color: var(--ink-dim);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ============ Tool categories ============ */
.tool-category {
  margin-bottom: clamp(32px, 6vw, 52px);
}
.category-title {
  font-family: Georgia, "Noto Serif TC", serif;
  font-size: clamp(18px, 3.6vw, 22px);
  color: var(--ink);
  letter-spacing: 0.2px;
  margin-bottom: clamp(14px, 3vw, 18px);
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.category-icon {
  font-size: 1em;
  line-height: 1;
  display: inline-flex;
}
.category-sub {
  color: var(--ink-dim);
  font-size: clamp(13px, 3vw, 15px);
  line-height: 1.6;
  margin-top: 6px;
  font-style: italic;
}

/* ============ Tool cards ============ */
.tools {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .tools { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}

.tool-card {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out, border-color 0.16s;
  position: relative;
}
.tool-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(42, 42, 45, 0.08);
}
.tool-card:focus-visible {
  outline: 2px solid var(--tomato);
  outline-offset: 2px;
}

.tool-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.tool-icon-wrap svg {
  width: 40px;
  height: 40px;
  display: block;
}
.tool-icon-fretboard  { background: var(--fb-tint); }
.tool-icon-metronome  { background: var(--mt-tint); }
.tool-icon-pomodoro   { background: var(--pm-tint); }
.tool-icon-wheel      { background: var(--wh-tint); }
.tool-icon-coinflip   { background: var(--cf-tint); }
.tool-icon-numgen     { background: var(--ng-tint); }
.tool-icon-dice       { background: var(--dc-tint); }
.tool-icon-celeb       { background: var(--ce-tint); }

.tool-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.tool-name {
  font-family: Georgia, "Noto Serif TC", serif;
  font-size: 19px;
  color: var(--ink);
  margin-bottom: 6px;
  line-height: 1.25;
  letter-spacing: 0.1px;
  font-weight: 700;
}
.tool-desc {
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.55;
  margin-bottom: 10px;
}
.tool-cta {
  font-size: 13px;
  color: var(--tomato);
  font-weight: 600;
  letter-spacing: 0.2px;
  align-self: flex-start;
}
.tool-card:hover .tool-cta { text-decoration: underline; }

/* ============ About section ============ */
.about {
  max-width: 680px;
  margin: 0 auto clamp(40px, 7vw, 64px);
  padding: 26px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
}
.about h2 {
  font-family: Georgia, "Noto Serif TC", serif;
  font-size: clamp(18px, 3.8vw, 22px);
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: 0.1px;
  font-weight: 700;
}
.about p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 10px;
}
.about p:last-child { margin-bottom: 0; }
.about a {
  color: var(--tomato);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}
.about strong { color: var(--ink); }

/* ============ Footer ============ */
.site-footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 22px 12px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}
.site-footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--ink-dim);
}
.site-footer a {
  color: var(--ink-dim);
  text-decoration: none;
  transition: color 0.15s;
}
.site-footer a:hover { color: var(--tomato); }
.site-footer .sub {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 1.5px;
  opacity: 0.7;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}