* { box-sizing: border-box; }

html { min-width: 320px; background: var(--glass-page-bg); }

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  background: transparent;
  color: var(--glass-ink);
  font-family: var(--glass-font);
  font-kerning: normal;
  font-size: 1rem;
  line-height: 1.5;
}

a { color: inherit; }
button { font: inherit; }

:focus-visible {
  outline: 3px solid var(--glass-accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 12px;
  z-index: 10;
  padding: 9px 12px;
  border-radius: var(--glass-radius-sm);
  background: var(--glass-ink);
  color: var(--glass-page-bg);
}
.skip-link:focus { top: 8px; }

.portal-shell {
  width: min(100% - 32px, 960px);
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 0 120px;
}

.portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px 0;
}

.brand { display: inline-flex; text-decoration: none; }

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(60, 50, 30, 0.12);
}

.header-tag {
  font-family: var(--glass-font-num);
  color: var(--glass-muted);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.portal-intro { padding: 52px 4px 28px; }

h1 {
  margin: 0;
  font-size: 2.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.intro-copy {
  max-width: 34em;
  margin: 14px 0 0;
  color: var(--glass-soft);
  font-size: 0.875rem;
  line-height: 1.6;
}

.tool-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

@media (min-width: 720px) {
  .tool-index { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.tool-card {
  display: grid;
  align-content: space-between;
  gap: 24px;
  min-height: 140px;
  padding: 16px;
  border-radius: var(--glass-radius-lg);
  text-align: left;
  text-decoration: none;
  transition: box-shadow 200ms ease;
}

.tool-card-active {
  position: relative;
  background: var(--glass-card-bg);
  box-shadow: var(--glass-card-shadow);
}

/* 滑鼠靠近：不抬升，卡片周圍浮出一圈石板藍柔光 */
.tool-card-active:hover,
.tool-card-active:focus-visible {
  box-shadow:
    var(--glass-hairline),
    0 1px 2px rgba(60, 50, 30, 0.05),
    0 0 0 1.5px oklch(40% 0.05 250 / 0.08),
    0 12px 36px oklch(40% 0.05 250 / 0.18);
}

/* 點擊：一圈邊框從卡片邊緣往外擴散後淡出（portal.js 在按下時掛上 .is-waving 觸發）。
   平時 opacity 0，所以卡片靜止時沒有外框。 */
.tool-card-active::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid var(--glass-accent);
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
}

.tool-card-active.is-waving::after {
  animation: portal-shock-out 0.6s cubic-bezier(0.15, 0.7, 0.3, 1);
}

@keyframes portal-shock-out {
  from { transform: scale(1); opacity: 0.9; }
  to { transform: scale(1.12); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .tool-card { transition: none; }
  .tool-card-active.is-waving::after { animation: none; }
}

.tool-card-coming {
  border: 1.5px dashed var(--glass-dash);
  color: var(--glass-faint);
}

.tool-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.tool-index-no {
  font-family: var(--glass-font-num);
  color: var(--glass-accent);
  font-size: 1.625rem;
  font-weight: 400;
  line-height: 1;
}

.tool-card-coming .tool-index-no { color: inherit; }

.tool-card-copy { display: grid; gap: 3px; min-width: 0; }

.tool-card-copy strong {
  color: var(--glass-ink);
  font-size: 1.125rem;
  font-weight: 600;
}

.tool-card-copy small {
  color: var(--glass-muted);
  font-size: 0.6875rem;
  line-height: 1.4;
}

.tool-card-coming .tool-card-copy strong,
.tool-card-coming .tool-card-copy small { color: inherit; }

.tool-status {
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--glass-sunken);
  font-family: var(--glass-font-num);
  font-size: 0.625rem;
  font-weight: 700;
}

.portal-footer {
  margin: 32px 0 0;
  padding: 0 6px;
  color: var(--glass-faint);
  font-size: 0.6875rem;
  text-align: center;
}

.error-page { display: grid; justify-items: start; }

.error-page .portal-header {
  width: 100%;
  margin-bottom: clamp(60px, 22vh, 180px);
}

.error-code {
  margin: 0 0 12px;
  font-family: var(--glass-font-num);
  color: var(--glass-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.error-page h1 { max-width: 12em; font-size: 2rem; }

.error-copy {
  max-width: 36em;
  margin: 18px 0 28px;
  color: var(--glass-soft);
}

.home-link {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--glass-accent);
  color: var(--glass-accent-on);
  font-size: 0.8125rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--glass-accent-shadow);
}

.home-link:hover,
.home-link:focus-visible { background: var(--glass-accent-strong); }

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