/* ══════════════════════════════════════════════════════════════
   Cookie Consent Banner — styles for 易站智能
   Aligned with Design System v2.0 (design-system.css)
   Mobile-first · Dark mode native · a11y
   ══════════════════════════════════════════════════════════════ */

/* ── CSS variables (fallback when design-system.css not loaded) ── */
.cc-root {
  --cc-bg:        var(--bg-glass, rgba(15,15,26,0.85));
  --cc-card:      var(--bg-card, #12121e);
  --cc-border:    var(--border, rgba(255,255,255,0.06));
  --cc-text:      var(--text, #f1f5f9);
  --cc-dim:       var(--text-dim, #94a3b8);
  --cc-muted:     var(--text-muted, #475569);
  --cc-accent:    var(--indigo, #6366f1);
  --cc-cyan:      var(--cyan, #22d3ee);
  --cc-green:     var(--green, #00ff9f);
  --cc-rose:      var(--rose, #f43f5e);
  --cc-radius:    var(--radius, 12px);
  --cc-radius-sm: var(--radius-sm, 8px);
  --cc-shadow:    var(--shadow-lg, 0 20px 60px rgba(0,0,0,0.5));
  --cc-ease:      var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
  --cc-font-en:   var(--font-en, 'Inter', system-ui, sans-serif);
  --cc-font-cn:   var(--font-cn, 'Noto Sans SC', system-ui, sans-serif);
  --cc-z-banner:  99999;
  --cc-z-panel:   100000;
}
.cc-root,
.cc-root *,
.cc-root *::before,
.cc-root *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Banner overlay ── */
.cc-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: var(--cc-z-banner);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 24px;
  animation: ccFadeIn 0.2s var(--cc-ease);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
@keyframes ccFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Banner card ── */
.cc-banner {
  width: 100%;
  max-width: 640px;
  background: var(--cc-bg);
  border: 1px solid var(--cc-border);
  border-radius: var(--cc-radius);
  box-shadow: var(--cc-shadow);
  padding: 28px 32px 24px;
  font-family: var(--cc-font-cn);
  color: var(--cc-text);
  line-height: 1.6;
  animation: ccSlideUp 0.35s var(--cc-ease);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
@keyframes ccSlideUp {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.cc-banner-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  font-family: var(--cc-font-en);
  letter-spacing: -0.01em;
}
.cc-banner-text {
  font-size: 13px;
  color: var(--cc-dim);
  margin-bottom: 20px;
}
.cc-banner-text a {
  color: var(--cc-cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.cc-banner-text a:hover {
  color: var(--cc-accent);
}

/* ── Buttons row ── */
.cc-btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.cc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--cc-radius-sm);
  font-size: 13px;
  font-family: var(--cc-font-en);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--cc-border);
  background: var(--cc-card);
  color: var(--cc-text);
  transition: all 0.15s var(--cc-ease);
  white-space: nowrap;
}
.cc-btn:hover {
  border-color: var(--cc-accent);
  background: rgba(99,102,241,0.08);
}
.cc-btn:focus-visible {
  outline: 2px solid var(--cc-cyan);
  outline-offset: 2px;
}
.cc-btn-accept {
  background: var(--cc-accent);
  color: #fff;
  border-color: var(--cc-accent);
}
.cc-btn-accept:hover {
  background: #5558e6;
  border-color: #5558e6;
}
.cc-btn-decline {
  color: var(--cc-dim);
}
.cc-btn-decline:hover {
  color: var(--cc-rose);
  border-color: var(--cc-rose);
  background: rgba(244,63,94,0.06);
}
.cc-btn-settings {
  font-weight: 500;
}
.cc-spacer {
  flex: 1;
  min-width: 0;
}

/* ── Settings panel (hidden by default) ── */
.cc-settings {
  display: none;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--cc-border);
}
.cc-settings.open {
  display: block;
}
.cc-setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
}
.cc-setting-row + .cc-setting-row {
  border-top: 1px solid var(--cc-border);
}
.cc-setting-info {
  flex: 1;
  min-width: 0;
}
.cc-setting-label {
  font-size: 13px;
  font-weight: 600;
  font-family: var(--cc-font-en);
}
.cc-setting-desc {
  font-size: 11px;
  color: var(--cc-muted);
  margin-top: 2px;
}
.cc-setting-always {
  font-size: 10px;
  color: var(--cc-green);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 2px;
}

/* ── Toggle switch ── */
.cc-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.cc-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}
.cc-toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--cc-border);
  border-radius: 24px;
  cursor: pointer;
  transition: background 0.2s var(--cc-ease);
}
.cc-toggle-slider::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s var(--cc-ease);
}
.cc-toggle input:checked + .cc-toggle-slider {
  background: var(--cc-accent);
}
.cc-toggle input:checked + .cc-toggle-slider::before {
  transform: translateX(20px);
}
.cc-toggle input:disabled + .cc-toggle-slider {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── Floating reopen button ── */
.cc-float {
  position: fixed;
  right: 16px;
  bottom: 20px;
  z-index: var(--cc-z-banner);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--cc-card);
  border: 1px solid var(--cc-border);
  color: var(--cc-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--cc-shadow);
  transition: all 0.15s var(--cc-ease);
  opacity: 0.7;
}
.cc-float:hover {
  opacity: 1;
  color: var(--cc-cyan);
  border-color: var(--cc-cyan);
  transform: scale(1.1);
}
.cc-float:focus-visible {
  outline: 2px solid var(--cc-cyan);
  outline-offset: 2px;
  opacity: 1;
}

/* ── Mobile (≤ 600px) ── */
@media (max-width: 600px) {
  .cc-overlay {
    padding: 12px;
    align-items: flex-end;
  }
  .cc-banner {
    padding: 24px 20px 20px;
    border-radius: var(--cc-radius-sm) var(--cc-radius-sm) 0 0;
    max-width: 100%;
  }
  .cc-banner-title {
    font-size: 15px;
  }
  .cc-banner-text {
    font-size: 12px;
  }
  .cc-btn-row {
    flex-direction: column;
    gap: 8px;
  }
  .cc-btn {
    width: 100%;
    justify-content: center;
    padding: 12px 16px;
    font-size: 14px;
  }
  .cc-spacer {
    display: none;
  }
  .cc-float {
    right: 10px;
    bottom: 14px;
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
}