/* 基础重置与排版 */
* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--color-bg);
}

body {
  font-family: var(--font-mono);
  color: var(--color-text);
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
}

#app { position: fixed; inset: 0; }

.hidden { display: none !important; }

button {
  font-family: var(--font-mono);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* 通用按钮 */
.btn {
  display: inline-block;
  padding: clamp(8px, 1.4vh, 14px) clamp(18px, 3vw, 34px);
  border: 1px solid var(--color-panel-border);
  border-radius: var(--radius);
  background: rgba(21, 32, 54, 0.85);
  color: var(--color-text);
  font-size: clamp(13px, 1.8vh, 17px);
  letter-spacing: 0.12em;
  transition: box-shadow 0.15s, transform 0.1s, background 0.15s;
}
.btn:hover { background: rgba(35, 54, 88, 0.95); box-shadow: var(--glow-pulse); }
.btn:active { transform: scale(0.96); }
.btn.primary {
  border-color: var(--color-pulse);
  color: #04121e;
  background: linear-gradient(135deg, #35c8ff, #1d8fd0);
  font-weight: bold;
  text-shadow: none;
}
.btn.primary:hover { box-shadow: 0 0 20px rgba(53, 200, 255, 0.8); }
.btn.danger { border-color: var(--color-danger); color: #ffb3c2; }
.btn.danger:hover { box-shadow: 0 0 14px rgba(255, 56, 96, 0.5); }
.btn.ghost { background: transparent; border-color: rgba(125, 146, 173, 0.4); color: var(--color-text-dim); }
.btn.small { padding: 7px 14px; font-size: clamp(11px, 1.5vh, 14px); }
.btn.big { font-size: clamp(15px, 2.2vh, 20px); padding: clamp(10px, 1.8vh, 18px) clamp(24px, 4vw, 48px); }
.btn:disabled { opacity: 0.4; pointer-events: none; }

.icon-btn {
  width: 40px; height: 40px;
  border: 1px solid var(--color-panel-border);
  border-radius: 8px;
  background: rgba(21, 32, 54, 0.85);
  font-size: 17px;
  display: grid;
  place-items: center;
}
.icon-btn:active { transform: scale(0.92); }

/* 全屏页面层 */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  z-index: 20;
  padding: calc(12px + var(--safe-top)) calc(12px + var(--safe-right)) calc(12px + var(--safe-bottom)) calc(12px + var(--safe-left));
  background: radial-gradient(ellipse at center, rgba(7, 11, 20, 0.82) 0%, rgba(7, 11, 20, 0.96) 100%);
  overflow-y: auto;
  touch-action: pan-y;
}
/* 安全居中：内容短于视口时 auto margin 居中；高于视口时顶部对齐滚动区起点，
   避免 align-items:center 把超高面板顶部推出可滚动范围（角色/武器选择页裁顶） */
.screen > * { margin-top: auto; margin-bottom: auto; flex-shrink: 0; }
.screen.overlay { background: rgba(4, 6, 12, 0.72); backdrop-filter: blur(3px); }

.panel {
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: 14px;
  box-shadow: 0 0 30px rgba(53, 200, 255, 0.12), inset 0 0 40px rgba(53, 200, 255, 0.03);
  padding: clamp(16px, 3vh, 36px) clamp(18px, 4vw, 44px);
}
.center-panel { text-align: center; max-width: min(92vw, 480px); }
.wide-panel { max-width: min(94vw, 860px); width: 100%; }

.screen-title {
  font-size: clamp(18px, 3vh, 28px);
  letter-spacing: 0.2em;
  margin-bottom: clamp(10px, 2vh, 22px);
  color: var(--color-pulse);
  text-shadow: var(--glow-pulse);
}
.screen-title.glow { animation: titlePulse 1.2s ease-in-out infinite alternate; }
@keyframes titlePulse {
  from { text-shadow: 0 0 8px rgba(53,200,255,0.5); }
  to { text-shadow: 0 0 22px rgba(53,200,255,0.95); }
}

.hint { color: var(--color-text-dim); font-size: clamp(11px, 1.5vh, 13px); margin-bottom: 12px; }
.hint-inline { color: var(--color-text-dim); font-size: 11px; font-weight: normal; }