/* ==========================================================
   SPACE INVADERS - style.css
   ========================================================== */

:root {
  --bg:        #05060a;
  --bg-panel:  #0b1018;
  --line:      #1d2a3a;
  --green:     #4dff7c;
  --green-dim: #1f7a3c;
  --cyan:      #7cf3ff;
  --yellow:    #ffd166;
  --red:       #ff5a6e;
  --text:      #c8d6e5;
  --muted:     #63758c;
  --font:      "Press Start 2P", "Courier New", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse at 50% 0%, #101a2b 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, #0d1420 0%, transparent 55%);
}

.app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* ---------- ヘッダー ---------- */
.app-header { text-align: center; margin-bottom: 20px; }

.logo {
  margin: 0;
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--green);
  text-shadow: 0 0 12px rgba(77, 255, 124, .55), 0 0 32px rgba(77, 255, 124, .25);
}

.tagline {
  margin: 10px 0 0;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 3px;
}

/* ---------- レイアウト ---------- */
.layout {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  justify-content: center;
  flex-wrap: wrap;
}

.stage-wrap { flex: 0 0 auto; }

/* ---------- HUD ---------- */
.hud {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  width: 480px;
  max-width: 100%;
  margin: 0 auto 8px;
  padding: 10px 12px;
  background: var(--bg-panel);
  border: 2px solid var(--line);
  border-bottom: none;
}

.hud-item { display: flex; flex-direction: column; gap: 6px; }
.hud-label { font-size: 8px; color: var(--muted); letter-spacing: 1px; }
.hud-value { font-size: 12px; color: var(--text); }
.hud-value.hi { color: var(--yellow); }
#hud-lives { color: var(--green); letter-spacing: 2px; }

/* ---------- ステージ ---------- */
.stage {
  position: relative;
  width: 480px;
  max-width: 100%;
  aspect-ratio: 480 / 600;
  border: 2px solid var(--line);
  background: #000;
  overflow: hidden;
  box-shadow: 0 0 0 4px #05060a, 0 12px 40px rgba(0, 0, 0, .8);
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
}

/* 走査線エフェクト */
.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, .22) 3px,
    rgba(0, 0, 0, .22) 4px
  );
  mix-blend-mode: multiply;
}

/* ---------- オーバーレイ ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 5, 10, .86);
  padding: 16px;
  z-index: 5;
}

.overlay.hidden { display: none; }

.panel {
  width: 100%;
  max-width: 340px;
  text-align: center;
  border: 2px solid var(--green-dim);
  background: rgba(8, 14, 22, .95);
  padding: 20px 16px;
}

.panel-title {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--green);
  text-shadow: 0 0 10px rgba(77, 255, 124, .5);
}

.panel-title.danger {
  color: var(--red);
  text-shadow: 0 0 10px rgba(255, 90, 110, .5);
  animation: blink 1s steps(2, end) infinite;
}

@keyframes blink { 50% { opacity: .35; } }

.keytable {
  width: 100%;
  border-collapse: collapse;
  font-size: 8px;
  color: var(--text);
  margin-bottom: 14px;
}

.keytable td { padding: 5px 4px; text-align: left; }
.keytable td:first-child { color: var(--cyan); width: 42%; }

.score-legend { font-size: 8px; color: var(--muted); margin: 0 0 16px; line-height: 1.8; }
.c-squid { color: var(--cyan); }
.c-crab  { color: var(--green); }
.c-octo  { color: var(--yellow); }
.c-ufo   { color: var(--red); }

.hint { font-size: 8px; color: var(--muted); margin: 12px 0 0; }
.big  { font-size: 12px; color: var(--cyan); margin: 0; }
.result { font-size: 10px; color: var(--text); margin: 0 0 18px; }
.result b { color: var(--yellow); font-size: 14px; margin-left: 8px; }

/* ---------- 名前入力 ---------- */
.name-form { display: block; margin-bottom: 16px; }
.name-form.hidden { display: none; }

.rankin {
  font-size: 9px;
  color: var(--yellow);
  margin: 0 0 10px;
  animation: blink 1.2s steps(2, end) infinite;
}

.rankout { font-size: 9px; color: var(--muted); margin: 0 0 16px; }
.rankout.hidden { display: none; }

#name-input {
  width: 130px;
  padding: 9px 8px;
  background: #04070c;
  border: 2px solid var(--green-dim);
  color: var(--green);
  font-family: var(--font);
  font-size: 11px;
  text-align: center;
  text-transform: uppercase;
  outline: none;
}

#name-input:focus { border-color: var(--green); box-shadow: 0 0 10px rgba(77, 255, 124, .35); }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  padding: 12px 20px;
  background: var(--green);
  border: none;
  color: #04070c;
  font-family: var(--font);
  font-size: 11px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform .08s, box-shadow .15s, background .15s;
}

.btn:hover { box-shadow: 0 0 18px rgba(77, 255, 124, .5); }
.btn:active { transform: translateY(2px); }
.btn.small { padding: 9px 12px; font-size: 9px; margin-left: 6px; vertical-align: middle; }

.btn.ghost {
  background: transparent;
  border: 2px solid var(--line);
  color: var(--muted);
  font-size: 8px;
  padding: 9px 12px;
  width: 100%;
}

.btn.ghost:hover { border-color: var(--red); color: var(--red); box-shadow: none; }

/* ---------- タッチ操作 ---------- */
.touch {
  display: none;
  gap: 10px;
  width: 480px;
  max-width: 100%;
  margin: 12px auto 0;
}

.tbtn {
  flex: 1;
  padding: 18px 0;
  background: var(--bg-panel);
  border: 2px solid var(--line);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.tbtn:active { background: #16202e; border-color: var(--green); color: var(--green); }
.tbtn.fire { flex: 1.4; font-size: 11px; color: var(--green); }

/* ---------- ランキング ---------- */
.ranking {
  flex: 1 1 260px;
  min-width: 260px;
  max-width: 320px;
  background: var(--bg-panel);
  border: 2px solid var(--line);
  padding: 16px;
}

.ranking h2 {
  margin: 0 0 14px;
  font-size: 12px;
  color: var(--yellow);
  text-align: center;
  letter-spacing: 2px;
}

.rank-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 8px;
  margin-bottom: 14px;
}

.rank-table th {
  color: var(--muted);
  font-weight: normal;
  padding: 6px 3px;
  border-bottom: 2px solid var(--line);
  text-align: left;
}

.rank-table th:nth-child(3), .rank-table td:nth-child(3) { text-align: right; }
.rank-table th:nth-child(4), .rank-table td:nth-child(4) { text-align: right; }

.rank-table td {
  padding: 7px 3px;
  border-bottom: 1px solid rgba(29, 42, 58, .5);
  color: var(--text);
}

.rank-table td:nth-child(1) { color: var(--muted); width: 22px; }
.rank-table td:nth-child(3) { color: var(--green); }
.rank-table tr.top1 td { color: var(--yellow); }
.rank-table tr.new td { animation: blink 1s steps(2, end) infinite; }
.rank-table tr.empty td { text-align: center; color: var(--muted); padding: 20px 0; }

.note { font-size: 7px; color: var(--muted); line-height: 1.9; margin: 12px 0 0; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 820px) {
  .layout { flex-direction: column; align-items: center; }
  .ranking { width: 480px; max-width: 100%; }
}

@media (max-width: 540px) {
  .app { padding: 16px 10px 32px; }
  .logo { font-size: 15px; }
  .touch { display: flex; }
  .hud { padding: 8px; }
  .hud-value { font-size: 10px; }
}