/* ==========================================================
   GRAVITY ZERO — 3D フライトシューター
   画面レイアウトとUIのスタイル定義
   ========================================================== */

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #050510;
    overflow: hidden;
    font-family: 'Segoe UI', 'Hiragino Sans', 'Yu Gothic UI', sans-serif;
    color: #fff;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
}

canvas {
    display: block;
}

/* 3D描画キャンバス */
#game-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* エフェクト用の2Dオーバーレイ(照準・集中線など) */
#overlay-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* ---------- 情報パネル ---------- */
#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 16px;
    box-sizing: border-box;
}

.panel {
    background: rgba(10, 20, 40, 0.7);
    border: 1px solid rgba(0, 170, 255, 0.6);
    border-radius: 8px;
    padding: 10px 14px;
    box-shadow: 0 4px 15px rgba(0, 170, 255, 0.15);
    backdrop-filter: blur(4px);
    pointer-events: auto;
    /* モード名(STANDARD/HEAVY)+ DEF/ROF/PWR の3チップが1行に収まる幅 */
    width: max-content;
    max-width: 300px;
}

/* モード名と個性ラベルを1行にまとめる */
.mode-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.mode-name-sm {
    font-size: 14px;
    font-weight: bold;
    white-space: nowrap;
}

.trait-row-inline {
    display: flex;
    gap: 4px;
    font-size: 10px;
    color: #9ab;
}

.panel-title {
    font-size: 12px;
    color: #00aaff;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 8px 0;
    border-bottom: 1px solid rgba(0, 170, 255, 0.3);
    padding-bottom: 4px;
}

.mode-name {
    font-size: 22px;
    font-weight: bold;
    margin: 4px 0;
    color: #fff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.note {
    font-size: 11px;
    color: #aaa;
    margin: 0;
    line-height: 1.5;
}

.stats-row {
    margin-top: 10px;
    font-size: 10px;
    color: #667;
    border-top: 1px dashed #333;
    padding-top: 5px;
}

/* スコアとレベル */
.score-row {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.level-chip {
    font-size: 11px;
    font-weight: normal;
    color: #fc6;
    border: 1px solid rgba(255, 204, 102, 0.5);
    border-radius: 10px;
    padding: 1px 8px;
}

/* モード固有の個性(防御・連射・火力) */
.trait-row {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    font-size: 10px;
    color: #9ab;
}

.trait {
    display: flex;
    align-items: center;
    gap: 3px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    padding: 2px 6px;
}

.trait-val {
    font-weight: bold;
}

.trait-good { color: #4dffb0; }
.trait-mid  { color: #cdd; }
.trait-bad  { color: #ff6a7a; }

/* 耐久ゲージ */
#hp-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 70, 70, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

#hp-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #f63, #fc3);
    border-radius: 4px;
    transition: width 0.15s ease-out;
}

/* サブ武器の表示とクールタイムゲージ */
.sub-row {
    margin-top: 10px;
    font-size: 11px;
    color: #9cf;
}

#subcd-bar {
    margin-top: 4px;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    overflow: hidden;
}

#subcd-fill {
    width: 0%;
    height: 100%;
    background: #f6f;
    border-radius: 2px;
}

/* ブーストエネルギーのゲージ */
.gauge-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
}

.gauge-label {
    font-size: 9px;
    color: #9ab;
    letter-spacing: 1px;
    min-width: 36px;
}

#boost-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    overflow: hidden;
}

#boost-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #06f, #0cf);
    border-radius: 2px;
    transition: width 0.08s linear;
}

/* 残量が少ないときは赤系にして枯渇を知らせる */
#boost-fill.boost-low {
    background: linear-gradient(90deg, #f43, #fa4);
}

/* ---------- 操作ガイド(PC用) ---------- */
.controls {
    align-self: flex-end;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid #555;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 12px;
    color: #ccc;
    text-align: right;
    line-height: 2;
}

.key {
    display: inline-block;
    background: #eee;
    color: #000;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: bold;
    margin: 0 2px;
    font-size: 11px;
}

/* ---------- モバイル操作 ---------- */
#mobile-controls {
    display: none;
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    justify-content: space-between;
    align-items: flex-end;
    padding: 0 20px;
    box-sizing: border-box;
    pointer-events: none;
}

@media (max-width: 900px), (pointer: coarse) {
    .controls { display: none; }
    #mobile-controls { display: flex; }
}

#virtual-stick {
    width: 120px;
    height: 120px;
    border-radius: 60px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    pointer-events: auto;
}

#stick-knob {
    width: 44px;
    height: 44px;
    border-radius: 22px;
    background: rgba(0, 170, 255, 0.5);
    position: absolute;
    top: 38px;
    left: 38px;
}

.btn-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
}

.btn-row {
    display: flex;
    gap: 10px;
}

.m-btn {
    background: rgba(0, 170, 255, 0.2);
    border: 2px solid rgba(0, 170, 255, 0.5);
    color: #fff;
    width: 58px;
    height: 58px;
    border-radius: 29px;
    font-size: 10px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
}

.m-btn:active { filter: brightness(1.6); }

/* ---------- ブリンク(瞬間移動)クールダウン表示 ---------- */
#cooldown-bar {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 5px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    overflow: hidden;
}

#cooldown-fill {
    width: 100%;
    height: 100%;
    background: #0ff;
    border-radius: 3px;
    transition: width 0.05s linear;
}

/* ---------- 開始画面・ヘルプ・ゲームオーバー画面 ---------- */
#start-overlay,
#help-overlay,
#gameover-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 5, 15, 0.94);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 28px 16px;
    box-sizing: border-box;
    overflow-y: auto;       /* 説明が長い端末ではスクロールできるように */
    z-index: 1000;
}

.game-title {
    font-size: 34px;
    font-weight: bold;
    letter-spacing: 6px;
    color: #fff;
    text-shadow: 0 0 16px #0ff;
    margin-bottom: 4px;
    text-align: center;
}

.game-subtitle {
    font-size: 13px;
    color: #8ac;
    letter-spacing: 2px;
    text-align: center;
}

.start-btn {
    flex: 0 0 auto;
    padding: 14px 44px;
    font-size: 18px;
    color: #0ff;
    background: transparent;
    border: 2px solid #0ff;
    border-radius: 5px;
    letter-spacing: 3px;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
    transition: all 0.2s;
    cursor: pointer;
    pointer-events: auto;
}

.start-btn:hover {
    background: rgba(0, 255, 255, 0.15);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.6);
}

/* ヘルプは内容が縦に長いので、中央寄せではなく上から並べる
   (flexの中央寄せ+スクロールだと上部が見切れるため) */
#help-overlay {
    justify-content: flex-start;
}

#gameover-overlay {
    background: rgba(20, 0, 5, 0.88);
}

/* ---------- チャレンジ開始ボタン・レベル選択 ---------- */
.start-btn-sub {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    font-size: 14px;
    padding: 10px 28px;
    color: #f6a;
    border-color: #f6a;
    box-shadow: 0 0 12px rgba(255, 102, 170, 0.25);
}

.start-btn-sub:hover {
    background: rgba(255, 102, 170, 0.15);
    box-shadow: 0 0 20px rgba(255, 102, 170, 0.5);
}

.start-btn-sub small {
    font-size: 9px;
    letter-spacing: 2px;
    color: #c8a0b8;
}

.level-select {
    font-size: 12px;
    color: #9df;
    letter-spacing: 2px;
    border: 1px solid rgba(0, 170, 255, 0.4);
    border-radius: 14px;
    padding: 5px 16px;
    cursor: pointer;
    pointer-events: auto;
    user-select: none;
    -webkit-user-select: none;
}

.level-select:hover { background: rgba(0, 170, 255, 0.15); }

.level-select b { color: #fff; }

/* ---------- チャレンジモードの残り時間 ---------- */
#challenge-time {
    position: absolute;
    top: 22px;
    right: 70px;
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 2px;
    color: #ffcc55;
    text-shadow: 0 0 10px rgba(255, 170, 0, 0.6);
    z-index: 900;
    pointer-events: none;
}

/* ---------- ランキング ---------- */
#ranking-box {
    background: rgba(10, 20, 40, 0.6);
    border: 1px solid rgba(0, 170, 255, 0.35);
    border-radius: 10px;
    padding: 12px 26px;
    text-align: center;
}

.rank-title {
    font-size: 11px;
    color: #7fd0ff;
    letter-spacing: 3px;
    margin-bottom: 6px;
}

#ranking-list {
    margin: 0;
    padding-left: 20px;
    text-align: left;
    font-size: 14px;
    color: #cde;
    line-height: 1.7;
}

#ranking-list .rank-new {
    color: #ffcc55;
    font-weight: bold;
    text-shadow: 0 0 8px rgba(255, 170, 0, 0.5);
}

/* ---------- デバッグパネル ---------- */
#debug-panel {
    position: absolute;
    left: 16px;
    bottom: 64px;
    z-index: 960;
    background: rgba(10, 5, 0, 0.8);
    border: 1px solid #f80;
    border-radius: 6px;
    padding: 8px 10px;
    font-family: 'Consolas', monospace;
    font-size: 11px;
    color: #fc8;
    pointer-events: auto;
    display: none;
}

#debug-panel .debug-btns {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    max-width: 220px;
}

#debug-panel button {
    background: rgba(255, 136, 0, 0.12);
    border: 1px solid rgba(255, 136, 0, 0.6);
    color: #fc8;
    font-family: inherit;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 3px;
    cursor: pointer;
}

#debug-panel button:hover { background: rgba(255, 136, 0, 0.3); }

/* ---------- タイトル画面の簡潔ヒント ---------- */
.quick-hints {
    font-size: 12px;
    color: #9ab;
    text-align: center;
    line-height: 2.2;
}

.quick-hints b {
    color: #dee;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    padding: 1px 7px;
    font-weight: bold;
}

.best-line {
    font-size: 12px;
    color: #fc6;
    letter-spacing: 2px;
}

/* ---------- 遊び方カード ---------- */
.guide-card {
    width: 100%;
    max-width: 440px;
    background: rgba(10, 20, 40, 0.6);
    border: 1px solid rgba(0, 170, 255, 0.35);
    border-radius: 10px;
    padding: 18px 20px;
    box-sizing: border-box;
}

.guide-heading {
    font-size: 18px;
    color: #0ff;
    margin: 0 0 8px 0;
    letter-spacing: 2px;
}

.guide-lead {
    font-size: 12px;
    color: #bcd;
    line-height: 1.6;
    margin: 0 0 14px 0;
}

.guide-sub {
    font-size: 12px;
    color: #7fd0ff;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 16px 0 8px 0;
    border-bottom: 1px solid rgba(0, 170, 255, 0.25);
    padding-bottom: 4px;
}

.guide-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 14px;
}

.guide-ctrl {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    font-size: 11px;
    color: #cde;
}

.guide-ctrl b {
    color: #fff;
    white-space: nowrap;
}

.guide-ctrl span {
    text-align: right;
    color: #9ab;
    line-height: 1.5;
}

.guide-ctrl small {
    color: #667;
    font-size: 9px;
}

.guide-list {
    margin: 0;
    padding-left: 18px;
    font-size: 11px;
    color: #cde;
    line-height: 1.7;
}

@media (max-width: 480px) {
    .guide-grid { grid-template-columns: 1fr; }
    .game-title { font-size: 26px; letter-spacing: 4px; }
}

/* ---------- ヘルプ / 一時停止ボタン ---------- */
#help-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    background: rgba(10, 20, 40, 0.7);
    border: 1px solid rgba(0, 170, 255, 0.6);
    color: #7fd0ff;
    font-size: 20px;
    font-weight: bold;
    display: none;               /* ゲーム開始後にJSで表示 */
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: auto;
    z-index: 900;
    user-select: none;
    -webkit-user-select: none;
}

#help-btn:active { filter: brightness(1.5); }

/* ---------- ボスの耐久ゲージ ---------- */
#boss-bar-wrap {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: min(420px, 60%);
    z-index: 500;
    text-align: center;
    pointer-events: none;
}

/* 狭い画面ではHUDパネルと重ならないよう、パネルの下へ逃がす */
@media (max-width: 999px) {
    #boss-bar-wrap {
        top: 170px;
        width: min(320px, 70%);
    }
}

#boss-label {
    font-size: 11px;
    color: #ff8095;
    letter-spacing: 3px;
    margin-bottom: 4px;
    text-shadow: 0 0 8px rgba(255, 0, 40, 0.6);
}

#boss-bar {
    height: 8px;
    background: rgba(255, 60, 80, 0.15);
    border: 1px solid rgba(255, 80, 100, 0.5);
    border-radius: 4px;
    overflow: hidden;
}

#boss-fill {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #f34, #f8a);
    transition: width 0.1s linear;
}

/* ---------- キー設定UI ---------- */
.keyconfig-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    font-size: 12px;
    color: #cde;
}

.key-btn {
    background: rgba(0, 170, 255, 0.12);
    border: 1px solid rgba(0, 170, 255, 0.5);
    color: #9df;
    font-size: 11px;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    min-width: 130px;
    font-family: inherit;
}

.key-btn:hover { background: rgba(0, 170, 255, 0.25); }

.key-btn.listening {
    border-color: #ff6;
    color: #ffb;
    animation: blinkKey 0.8s infinite;
}

@keyframes blinkKey {
    50% { background: rgba(255, 255, 100, 0.2); }
}

.keyconfig-actions {
    margin-top: 10px;
    text-align: right;
}