/* ============================================================
   拧螺丝物理小游戏 - 全部样式
   分组：1) base 2) layout 3) stage 4) toast
         5) toolbox 6) modal & flying assets 7) hint
         8) animations 9) media queries
   ============================================================ */

/* 1) base ------------------------------------------------------ */
* { box-sizing: border-box; }

body {
  margin: 0;
  height: 100vh;
  /* 手机浏览器地址栏会动态收缩 viewport，dvh 给出真实可视高度，避免页面底部被裁。 */
  height: 100dvh;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #f8fafc;
  background: radial-gradient(circle at 20% 0, #334155, #0f172a 48%, #020617);
}

button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

/* 2) layout ---------------------------------------------------- */
.app {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  height: 100dvh;
  gap: 12px;
  padding: 14px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 22px;
  background: rgba(15, 23, 42, .82);
  border: 1px solid rgba(148, 163, 184, .24);
  box-shadow: 0 16px 50px rgba(0, 0, 0, .28);
}
.topbar h1 { margin: 0 0 4px; font-size: clamp(22px, 3vw, 34px); }
.topbar p  { margin: 0; color: #cbd5e1; }

.stats {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.stats span,
.stats button {
  padding: 9px 13px;
  border-radius: 999px;
  background: #1e293b;
  color: #e2e8f0;
}
.stats button {
  font-weight: 800;
  background: linear-gradient(135deg, #f97316, #ef4444);
  color: white;
}
.stats .hint-btn {
  background: linear-gradient(135deg, #22c55e, #0ea5e9);
}

.level-nav {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 0 !important;
  background: transparent !important;
}
.level-nav button {
  padding: 6px 12px;
  font-size: 18px;
  line-height: 1;
  background: #1e293b;
  color: #e2e8f0;
  border-radius: 8px;
}
.level-nav button:hover { background: #334155; }
.level-nav .level-label {
  padding: 9px 12px;
  background: #1e293b;
  border-radius: 8px;
  margin: 0 6px;
}

/* 3) stage ----------------------------------------------------- */
.stage-wrap { min-height: 0; }

.stage {
  position: relative;
  width: min(100%, 980px);
  height: 100%;
  min-height: 400px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(148, 163, 184, .22);
  background:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px),
    radial-gradient(circle at 50% 0, #1e3a8a, #0f172a 62%);
  background-size: 34px 34px, 34px 34px, auto;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, .04),
    0 22px 70px rgba(0, 0, 0, .28);
}
.stage canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
}

/* 4) toast ----------------------------------------------------- */
.toast {
  position: absolute;
  z-index: 4;
  top: 18px;
  left: 50%;
  transform: translateX(-50%) translateY(-12px);
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, .9);
  color: #f8fafc;
  opacity: 0;
  transition: .22s;
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 5) toolbox panel -------------------------------------------- */
.toolbox-panel {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 12px 14px;
  border-radius: 24px;
  background: rgba(15, 23, 42, .86);
  border: 1px solid rgba(148, 163, 184, .24);
}
.toolbox-title {
  margin-bottom: 10px;
  color: #cbd5e1;
  font-weight: 800;
}
.toolboxes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.toolbox {
  position: relative;
  min-height: 104px;
  padding: 10px;
  border-radius: 20px;
  border: 2px solid transparent;
  background: #1e293b;
  overflow: hidden;
  transition: .2s;
}
.toolbox.red    { border-color: #ef4444; }
.toolbox.blue   { border-color: #3b82f6; }
.toolbox.yellow { border-color: #f59e0b; }
.toolbox.green  { border-color: #22c55e; }
.toolbox.accept     { box-shadow: 0 0 0 4px rgba(255, 255, 255, .14); }
.toolbox.delivering { transform: scale(.8) translateX(80px); opacity: 0; }

.toolbox-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 900;
  margin-bottom: 8px;
}
.toolbox-color {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--box-color);
}
.toolbox-label { font-size: 14px; color: #e2e8f0; }
.toolbox-count {
  font-size: 12px;
  color: #94a3b8;
  text-align: center;
  margin-top: 6px;
}

.progress-bar {
  display: flex;
  gap: 4px;
  height: 24px;
  margin-top: 4px;
}
.progress-segment {
  flex: 1;
  border-radius: 4px;
  background: rgba(255, 255, 255, .12);
  transition: background .2s;
}
.progress-segment.filled {
  box-shadow: inset 0 0 4px rgba(255, 255, 255, .3);
}

/* locked toolbox ------------------------------- */
.toolbox.locked {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  border-color: rgba(148, 163, 184, .4) !important;
  background: repeating-linear-gradient(
    45deg,
    rgba(148, 163, 184, .06),
    rgba(148, 163, 184, .06) 8px,
    rgba(148, 163, 184, .12) 8px,
    rgba(148, 163, 184, .12) 16px
  );
}
.toolbox.locked:hover {
  background: repeating-linear-gradient(
    45deg,
    rgba(250, 204, 21, .1),
    rgba(250, 204, 21, .1) 8px,
    rgba(250, 204, 21, .18) 8px,
    rgba(250, 204, 21, .18) 16px
  );
  border-color: #facc15 !important;
  transform: scale(1.02);
}
.toolbox.locked .lock-icon {
  font-size: 22px;
  filter: grayscale(.4);
}
.toolbox.locked .unlock-btn {
  padding: 4px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #78350f;
  font-size: 12px;
  font-weight: 900;
  pointer-events: none;
}

/* slots / mini screws (legacy slot UI helpers) */
.slots {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.slot {
  flex: 1;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .16);
  display: grid;
  place-items: center;
}
.mini-screw {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid white;
  background: var(--box-color);
  box-shadow: 0 5px 12px rgba(0, 0, 0, .25);
}

/* 6) modal & flying assets ------------------------------------ */
.modal {
  position: absolute;
  z-index: 5;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 6, 23, .58);
  backdrop-filter: blur(6px);
}
.modal.hidden { display: none; }

.modal-card {
  width: min(88%, 360px);
  padding: 26px;
  border-radius: 26px;
  text-align: center;
  background: #f8fafc;
  color: #0f172a;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .36);
}
.modal-card h2 { margin: 0 0 8px; font-size: 32px; }
.modal-card p  { margin: 0 0 18px; color: #475569; }
.modal-card button {
  padding: 12px 18px;
  border-radius: 999px;
  background: #2563eb;
  color: white;
  font-weight: 900;
}

.screw-fly {
  position: fixed;
  z-index: 20;
  width: 30px;
  height: 30px;
  margin: -15px 0 0 -15px;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow:
    0 10px 24px rgba(0, 0, 0, .35),
    inset 0 0 0 3px rgba(15, 23, 42, .35);
  pointer-events: none;
  transition:
    transform .48s cubic-bezier(.2, .9, .25, 1),
    opacity .48s ease;
}

/* 7) hint ----------------------------------------------------- */
.hint-ring {
  position: fixed;
  z-index: 18;
  width: 58px;
  height: 58px;
  margin: -29px 0 0 -29px;
  border: 3px solid #facc15;
  border-radius: 50%;
  pointer-events: none;
  box-shadow:
    0 0 0 0 rgba(250, 204, 21, .55),
    0 0 24px rgba(250, 204, 21, .65);
  animation: hintPulse 1.05s ease-out infinite;
}

.screen-burst {
  position: fixed;
  z-index: 19;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  pointer-events: none;
  opacity: 0;
  transform: scale(.7);
}
.screen-burst.show {
  opacity: 1;
  transform: scale(1);
  transition: transform .18s ease, opacity .18s ease;
}
.screen-burst span {
  position: absolute;
  left: -4px;
  top: -4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--burst-color, #f8fafc);
  box-shadow: 0 0 12px var(--burst-color, #f8fafc);
  animation: burstDot .58s cubic-bezier(.2, .8, .2, 1) forwards;
}

.toolbox.full-pop {
  animation: toolboxFullPop .36s cubic-bezier(.2, 1.4, .3, 1);
}

/* 8) animations ----------------------------------------------- */
@keyframes hintPulse {
  0% {
    transform: scale(.76);
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(250, 204, 21, .55);
  }
  100% {
    transform: scale(1.32);
    opacity: .18;
    box-shadow: 0 0 0 18px rgba(250, 204, 21, 0);
  }
}

@keyframes burstDot {
  0%   { transform: translate(0, 0) scale(1); opacity: 1; }
  100% { transform: translate(var(--dx), var(--dy)) scale(.15); opacity: 0; }
}

@keyframes toolboxFullPop {
  0%   { transform: scale(1); }
  45%  {
    transform: scale(1.08);
    box-shadow:
      0 0 0 5px rgba(250, 204, 21, .22),
      0 0 28px rgba(250, 204, 21, .35);
  }
  100% { transform: scale(1); }
}

/* 9) media queries -------------------------------------------- */

/* 手机竖屏：把所有外围 UI 紧凑化，给 stage 留出最大空间。
   关键：.stage 必须移除 min-height: 400px，否则会撑出 grid 1fr 单元，
   导致下半部分落在 toolbox-panel 之后甚至 viewport 之外（用户报告"板子在主屏幕下方看不到"）。 */
@media (max-width: 720px) {
  .app {
    gap: 8px;
    padding: 8px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 16px;
  }
  .topbar h1 { font-size: 18px; margin: 0; }
  .topbar p  { display: none; }

  .stats {
    gap: 6px;
    justify-content: flex-start;
  }
  .stats span,
  .stats button {
    padding: 6px 10px;
    font-size: 13px;
  }
  .level-nav button   { padding: 4px 9px; font-size: 16px; }
  .level-nav .level-label { padding: 6px 10px; font-size: 13px; }

  .stage-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .stage {
    min-height: 0;
    border-radius: 18px;
  }

  .toolbox-panel {
    padding: 8px 10px;
    border-radius: 18px;
  }
  .toolbox-title { margin-bottom: 6px; font-size: 13px; }
  .toolboxes     { gap: 8px; }
  .toolbox       { min-height: 78px; padding: 8px; border-radius: 14px; }
  .toolbox-head  { gap: 6px; margin-bottom: 6px; }
  .toolbox-label { font-size: 12px; }
  .toolbox-count { font-size: 11px; margin-top: 4px; }
  .progress-bar  { height: 18px; }
  .slot          { height: 34px; }
}

/* 手机横屏：把原来的上下两块 UI 放到右侧，让舞台吃满左侧高度。
   这样 430×932 横屏（932×430）不再被 topbar/toolbox 挤压成矮条。 */
@media (max-height: 520px) and (orientation: landscape) {
  .app {
    grid-template-columns: minmax(0, 1fr) clamp(200px, 28vw, 260px);
    grid-template-rows: auto minmax(0, 1fr);
    gap: 8px;
    padding: 8px;
  }

  .stage-wrap {
    grid-column: 1;
    grid-row: 1 / span 2;
    min-width: 0;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .stage {
    width: 100%;
    height: 100%;
    min-height: 0;
    border-radius: 18px;
  }

  .topbar {
    grid-column: 2;
    grid-row: 1;
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    border-radius: 18px;
  }
  .topbar h1 { font-size: 16px; margin: 0; }
  .topbar p  { display: none; }

  .stats {
    gap: 6px;
    justify-content: flex-start;
  }
  .stats span,
  .stats button {
    padding: 6px 9px;
    font-size: 12px;
  }
  .level-nav button { padding: 4px 8px; font-size: 15px; }
  .level-nav .level-label { padding: 6px 8px; margin: 0 4px; font-size: 12px; }

  .toolbox-panel {
    grid-column: 2;
    grid-row: 2;
    width: 100%;
    min-height: 0;
    margin: 0;
    padding: 10px;
    border-radius: 18px;
    overflow: auto;
  }
  .toolbox-title { margin-bottom: 8px; font-size: 13px; }
  .toolboxes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .toolbox {
    min-height: 64px;
    padding: 7px;
    border-radius: 14px;
  }
  .toolbox-head { gap: 6px; margin-bottom: 6px; }
  .toolbox-color { width: 14px; height: 14px; }
  .toolbox-label { font-size: 12px; }
  .toolbox-count { font-size: 11px; margin-top: 4px; }
  .progress-bar { height: 14px; }
}

/* 极小屏（iPhone SE 等 ≤ 380）再压一次内边距，并允许工具箱挤成 2 列。 */
@media (max-width: 380px) {
  .app { padding: 6px; gap: 6px; }
  .topbar h1 { font-size: 16px; }
  .toolboxes { grid-template-columns: repeat(2, 1fr); }
  .toolbox   { min-height: 70px; }
}