/**
 * FingerTips 官網共用樣式（SSOT）。
 * 涵蓋所有頁面共用的 reset、導覽列、footer、按鈕與 cookie 橫幅；
 * 色彩一律引用 tokens.css 的變數（styles/tokens.css，由 tokens.json 編譯）。
 * 頁面獨有的版型樣式留在各頁的 <style> 內。
 */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family-base);
  line-height: 1.5;
  color: var(--color-ink-primary);
  background: var(--color-surface-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--color-brand-blue); outline-offset: 3px; border-radius: var(--radius-sm); }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; top: 0; left: 0; z-index: 10000;
  transform: translateY(-120%);
  padding: var(--space-2) var(--space-4);
  background: var(--color-brand-blue); color: var(--color-surface-page);
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: var(--font-weight-medium); font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 0.15s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ===== Navigation ===== */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--color-overlay-nav);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border-subtle);
}
.nav-container {
  max-width: 1080px; margin: 0 auto; padding: 0 var(--space-6);
  height: 48px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 1.125rem; font-weight: var(--font-weight-semibold); color: var(--color-ink-primary);
  text-decoration: none; letter-spacing: -0.01em;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--color-ink-secondary); text-decoration: none; font-size: 0.8125rem;
  font-weight: var(--font-weight-regular); transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-ink-primary); }
.nav-links a.active { color: var(--color-ink-primary); font-weight: var(--font-weight-medium); }
.nav-cta {
  background: var(--color-brand-blue); color: var(--color-surface-page) !important;
  padding: 6px 14px; border-radius: var(--radius-pill); font-weight: var(--font-weight-medium) !important;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--color-brand-blue-hover); }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 32px; height: 32px; position: relative; flex-shrink: 0;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.5px; background: var(--color-ink-primary);
  position: absolute; left: 7px; transition: all 0.3s ease;
}
.nav-toggle span:nth-child(1) { top: 10px; }
.nav-toggle span:nth-child(2) { top: 15px; }
.nav-toggle span:nth-child(3) { top: 20px; }
.nav-toggle.open span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 15px; transform: rotate(-45deg); }

/* ===== Buttons / links ===== */
.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-brand-blue); color: var(--color-surface-page);
  padding: 12px 26px; border-radius: var(--radius-pill); text-decoration: none;
  font-size: 1rem; font-weight: var(--font-weight-medium); border: none; cursor: pointer;
  transition: background 0.2s;
}
.btn-primary:hover { background: var(--color-brand-blue-hover); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-surface-dark-elevated); color: var(--color-ink-on-dark);
  padding: 12px 22px; border-radius: var(--radius-pill); text-decoration: none;
  font-size: 1rem; font-weight: var(--font-weight-medium); border: none; cursor: pointer;
  transition: background 0.2s;
}
.btn-secondary:hover { background: var(--color-surface-dark); }
.btn-secondary .appstore-glyph { width: 20px; height: 20px; flex-shrink: 0; }
.btn-secondary .appstore-label small { display: block; font-size: 0.625rem; font-weight: var(--font-weight-regular); line-height: 1.1; opacity: 0.72; }
.btn-secondary .appstore-label strong { display: block; font-size: 0.9375rem; font-weight: var(--font-weight-semibold); line-height: 1.15; }
.btn-secondary.on-dark { background: var(--color-surface-page); color: var(--color-ink-primary); }
.btn-secondary.on-dark:hover { background: var(--color-surface-subtle); }
.link-arrow {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--color-brand-link); text-decoration: none;
  font-size: 1rem; font-weight: var(--font-weight-regular); transition: opacity 0.2s;
}
.link-arrow .chev { font-size: 1.15em; line-height: 0; transition: transform 0.2s; }
.link-arrow:hover { text-decoration: underline; }
.link-arrow:hover .chev { transform: translateX(2px); }

/* ===== Footer ===== */
footer { border-top: 1px solid var(--color-border-subtle); padding: var(--space-12) var(--space-6) var(--space-8); background: var(--color-surface-page); }
.footer-content { max-width: 1080px; margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-12); margin-bottom: var(--space-10); }
.footer-brand h3 { font-size: 1.125rem; font-weight: var(--font-weight-semibold); color: var(--color-ink-primary); margin-bottom: 6px; }
.footer-brand p { color: var(--color-ink-tertiary); font-size: 0.875rem; }
.footer-col h4 { font-size: 0.6875rem; font-weight: var(--font-weight-semibold); color: var(--color-ink-tertiary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px; }
.footer-col a { display: block; color: var(--color-ink-secondary); text-decoration: none; font-size: 0.8125rem; padding: 3px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--color-ink-primary); }
.footer-col p { color: var(--color-ink-secondary); font-size: 0.8125rem; padding: 3px 0; }
.footer-bottom { border-top: 1px solid var(--color-border-subtle); padding-top: var(--space-5); text-align: center; }
.footer-bottom p { font-size: 0.75rem; color: var(--color-ink-tertiary); }

/* ===== Cookie 橫幅 ===== */
.cookie-consent {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999;
  background: var(--color-surface-dark-elevated); color: var(--color-ink-on-dark);
  padding: 14px var(--space-6); font-size: 0.8125rem;
}
.cookie-consent.visible { display: block; }
.cookie-consent-inner {
  max-width: 1080px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4); flex-wrap: wrap;
}
.cookie-consent-inner p { margin: 0; flex: 1; min-width: 200px; }
.cookie-consent-inner p a { color: var(--color-brand-link-on-dark); text-decoration: underline; margin-left: 4px; }
.cookie-consent-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }
.cookie-consent-actions button {
  border-radius: var(--radius-pill); cursor: pointer; font-size: 0.8125rem;
  padding: 7px 18px; font-family: inherit;
}
.cookie-accept {
  background: var(--color-brand-blue); color: var(--color-surface-page);
  border: none; font-weight: var(--font-weight-medium);
}

/* ===== 共用響應式（nav / footer）===== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 48px; left: 0; right: 0;
    background: var(--color-overlay-nav);
    backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px);
    flex-direction: column; padding: var(--space-3) var(--space-6); gap: 0;
    border-bottom: 1px solid var(--color-border-subtle); align-items: stretch;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; font-size: 0.9375rem; border-bottom: 1px solid var(--color-border-subtle); }
  .nav-links a:last-child { border-bottom: none; }
  .nav-cta { text-align: center; margin-top: var(--space-2); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}