/* ============================================================
   polish.css — 视觉精修与微交互层
   叠加于 atelier.css / export.css 之后，不改变既有结构，
   只做：设计令牌统一、动效手感、无障碍焦点、优雅降级。
   ============================================================ */

:root {
  /* 精修后的暖纸调色板（在原有基础上收敛对比与温度） */
  --paper: #f5f1e8;
  --paper-soft: #faf7f0;
  --surface: #fffcf5;
  --ink: #333b37;
  --ink-strong: #232a27;
  --muted: #767c73;
  --muted-soft: #969b8f;
  --line: #e2ddd1;
  --line-soft: #ebe6da;
  --moss: #526a59;
  --moss-deep: #3c5544;
  --moss-tint: #eef2ea;
  --gold: #b79755;
  --gold-soft: #d9c08a;
  --gold-ink: #6c4b1c;
  --shinkansen: #4d7d86;
  --jr: #5a7f6d;

  /* 动效节奏 */
  --ease-out: cubic-bezier(.22, .61, .36, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --dur-fast: 140ms;
  --dur-med: 260ms;
  --dur-slow: 460ms;

  /* 阴影层级 */
  --shadow-1: 0 1px 2px rgba(60, 58, 37, .06);
  --shadow-2: 0 4px 14px rgba(60, 58, 37, .08);
  --shadow-3: 0 14px 40px rgba(60, 58, 37, .14);
  --shadow-4: 0 22px 70px rgba(60, 58, 37, .20);
}

/* ---------- 基底 ---------- */
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
body {
  font-variant-numeric: tabular-nums;
  letter-spacing: .002em;
}

/* ---------- 顶栏 ---------- */
header.atlas-header {
  background: linear-gradient(180deg, rgba(245, 241, 232, .92), rgba(245, 241, 232, .72));
  backdrop-filter: saturate(1.1) blur(10px);
  -webkit-backdrop-filter: saturate(1.1) blur(10px);
  position: relative;
  z-index: 20;
}

/* ---------- 按钮手感 ---------- */
.map-area nav button,
.drawer-toggle,
.guide-link,
.line-card button,
#export-dialog button,
.region-card,
.hoverbar button,
#nearby button {
  transition:
    transform var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
  will-change: transform;
}

.map-area nav button:hover,
.hoverbar button:hover,
#nearby button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
}
.map-area nav button:active,
.hoverbar button:active,
#nearby button:active,
.line-card button:active,
#export-dialog button:active,
.drawer-toggle:active {
  transform: translateY(0) scale(.97);
  transition-duration: 60ms;
}

/* 主操作按钮：柔和抬升 + 微光 */
.primary {
  position: relative;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .18), var(--shadow-1);
}
.primary:hover {
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2), var(--shadow-2);
}
.primary:active { transform: translateY(0) scale(.98); }

/* ---------- 焦点态（键盘可达） ---------- */
button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
summary:focus-visible,
svg:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- 覆盖率数字 ---------- */
.stats strong {
  letter-spacing: -.065em;
  background: linear-gradient(180deg, var(--ink-strong) 0%, #4a524c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 进度条：平滑增长 + 端点圆润 + 柔和光晕 */
.stats progress {
  height: 6px;
  border-radius: 999px;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  background: #e7e2d5;
}
.stats progress::-webkit-progress-bar { background: #e7e2d5; border-radius: 999px; }
.stats progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--moss), var(--shinkansen));
  border-radius: 999px;
  transition: width var(--dur-slow) var(--ease-out);
  box-shadow: 0 0 10px rgba(82, 106, 89, .35);
}
.stats progress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--moss), var(--shinkansen));
  border-radius: 999px;
  transition: width var(--dur-slow) var(--ease-out);
}

/* ---------- 徽章光泽扫过 ---------- */
.rank-medal {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.rank-medal::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: linear-gradient(115deg, transparent 40%, rgba(255, 255, 255, .55) 50%, transparent 60%);
  transform: translateX(-120%);
  animation: medal-shine 4.2s var(--ease-out) infinite;
  mix-blend-mode: screen;
  pointer-events: none;
}
@keyframes medal-shine {
  0% { transform: translateX(-120%); }
  55%, 100% { transform: translateX(120%); }
}

/* 地区卡片：悬停抬升 */
.region-card {
  border-radius: 12px;
  cursor: default;
}
.region-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
  border-color: var(--gold-soft);
}
.region-card progress {
  height: 5px;
  border-radius: 999px;
  overflow: hidden;
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  background: #e7e2d5;
}
.region-card progress::-webkit-progress-value { background: var(--moss); border-radius: 999px; transition: width var(--dur-slow) var(--ease-out); }
.region-card.unlocked progress::-webkit-progress-value { background: var(--gold); }

/* 附加荣誉徽章：轻微浮现 */
.extra-honor {
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-med) var(--ease-out);
  animation: honor-pop var(--dur-slow) var(--ease-spring) both;
}
.extra-honor:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); }
@keyframes honor-pop {
  from { opacity: 0; transform: translateY(6px) scale(.92); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- 地图 ---------- */
#mapwrap { position: relative; }
.land {
  fill: #faf8f1;
  transition: fill var(--dur-slow) var(--ease-out);
}
/* 悬停线路：可拾取时轻微加亮 */
#map.is-pickable .route:not(.fast) { transition: stroke-width var(--dur-fast) var(--ease-out), opacity var(--dur-fast); }
.route.selected {
  stroke: var(--moss);
  filter: drop-shadow(0 0 4px rgba(82, 106, 89, .35));
}
/* 已走过线路：柔和金色光晕 */
path.travel {
  stroke: #c29a4e;
  filter: drop-shadow(0 0 3px rgba(194, 154, 78, .45));
}
.station-label { font-weight: 600; }
.station { filter: drop-shadow(0 0 2px rgba(51, 59, 55, .5)); }

/* 拖拽手感 */
#map { cursor: grab; }
#map.is-dragging { cursor: grabbing; }

/* ---------- 线路卡片入场 ---------- */
.line-card:not([hidden]),
#nearby:not([hidden]) {
  animation: card-in var(--dur-med) var(--ease-spring) both;
  transform-origin: top center;
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(10px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* 卡片关闭按钮微交互 */
.card-heading button,
.drawer-heading button,
.export-heading button {
  border-radius: 8px;
}
.card-heading button:hover,
.drawer-heading button:hover,
.export-heading button:hover {
  background: rgba(82, 106, 89, .1);
  transform: rotate(90deg);
}

/* ---------- 侧边抽屉入场 ---------- */
aside#sidebar:not([hidden]) {
  animation: drawer-in var(--dur-med) var(--ease-out) both;
}
@keyframes drawer-in {
  from { opacity: 0; transform: translateX(-18px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ---------- 对话框 ---------- */
#export-dialog[open] {
  animation: dialog-in var(--dur-med) var(--ease-spring) both;
}
@keyframes dialog-in {
  from { opacity: 0; transform: translateY(16px) scale(.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
#export-dialog::backdrop {
  background: rgba(41, 47, 34, .4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fade-in var(--dur-med) both;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ---------- 旅程行 ---------- */
.trip-row { transition: background var(--dur-fast) var(--ease-out); border-radius: 8px; padding: 8px; }
.trip-row:hover { background: var(--moss-tint); }
.trip-preview { transition: transform var(--dur-fast) var(--ease-out); }
.trip-preview:active { transform: scale(.99); }

/* ---------- 悬停提示条 ---------- */
.hoverbar #hover {
  transition: color var(--dur-fast) var(--ease-out), font-weight var(--dur-fast);
}

/* ---------- 图例 ---------- */
.legend span { transition: opacity var(--dur-fast); }

/* ---------- 尊重系统减弱动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .rank-medal::after { display: none; }
}

/* ---------- 移动端：触控目标与手感 ---------- */
@media (max-width: 600px) {
  .map-area nav button { min-height: 40px; }
  .line-card:not([hidden]) { animation-duration: var(--dur-fast); }
}