/* ═══ Below — deep-sea bridge theme ═══ */

:root {
    --bg: #050b14;
    --panel: #0b1522;
    --panel2: #12202f;
    --line: #1f3850;
    --phos: #46e08a;          /* sonar phosphor green */
    --amber: #ffbf5e;
    --danger: #ff4545;
    --cyan: #4dd2ff;
    --text: #dcebf5;
    --muted: #7d99ae;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100%;
}
body {
    background-image:
        radial-gradient(ellipse at 20% -10%, rgba(30, 80, 130, .28), transparent 55%),
        radial-gradient(ellipse at 90% 115%, rgba(20, 90, 70, .16), transparent 50%);
}

h1, h2, h3 { font-weight: 700; letter-spacing: .04em; }
h2 { font-size: 1.05rem; color: var(--cyan); text-transform: uppercase; margin-bottom: 12px; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.mono { font-family: 'Consolas', monospace; }
.hidden { display: none !important; }

.btn {
    display: inline-block; background: var(--panel2); color: var(--text);
    border: 1px solid var(--line); border-radius: 8px; padding: 10px 18px;
    font-size: .95rem; font-weight: 600; cursor: pointer; transition: all .15s;
    font-family: inherit;
}
.btn:hover { border-color: var(--cyan); box-shadow: 0 0 14px rgba(77, 210, 255, .3); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(180deg, #114a66, #0a3348); border-color: #2a6a94; color: #d8f2ff; }
.btn-large { width: 100%; padding: 14px; font-size: 1.1rem; margin-top: 14px; }
.btn-sm { padding: 5px 12px; font-size: .8rem; }
.btn:disabled { opacity: .45; cursor: default; box-shadow: none; }

input, select {
    width: 100%; background: #071018; border: 1px solid var(--line); border-radius: 8px;
    color: var(--text); padding: 11px 12px; font-size: 1rem; margin: 6px 0 14px;
    font-family: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 12px rgba(77, 210, 255, .25); }
label { font-size: .85rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.check-row { display: flex; align-items: center; gap: 8px; text-transform: none; letter-spacing: 0; font-size: .9rem; margin-bottom: 6px; }
.check-row input { width: auto; margin: 0; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }

/* ── Home / lobby ── */
.home-container { max-width: 1000px; margin: 0 auto; padding: 28px 16px 60px; }
.hero { text-align: center; padding: 22px 0 30px; }
.game-title {
    font-size: clamp(2.2rem, 7.5vw, 3.8rem); letter-spacing: .16em; color: #e8f6ff;
    text-shadow: 0 0 24px rgba(77, 210, 255, .55);
}
.tagline { margin-top: 12px; color: var(--muted); line-height: 1.6; }
.tagline-hot { color: #a2e8c8; font-style: italic; }
.error-banner {
    background: rgba(255, 69, 69, .12); border: 1px solid #7a2020; color: #ffb0a0;
    border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; text-align: center;
}
.home-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .home-grid { grid-template-columns: 1fr; } }

.registry-head { margin: 20px 0 8px; font-size: .9rem; color: var(--muted); text-transform: uppercase; }
.live-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--phos); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .3; } }
.room-browser { list-style: none; max-height: 220px; overflow-y: auto; }
.room-row { display: flex; align-items: center; gap: 12px; padding: 9px 10px; border-bottom: 1px solid #10202f; cursor: pointer; }
.room-row:hover { background: rgba(77, 210, 255, .06); }
.room-code { font-family: monospace; font-size: 1.05rem; color: var(--cyan); letter-spacing: .12em; }
.room-row .btn { margin-left: auto; }
.empty-msg { padding: 14px 6px; }

.leaderboard-card { margin-top: 18px; }
.leaderboard { width: 100%; border-collapse: collapse; font-size: .9rem; }
.leaderboard th { color: var(--muted); text-align: left; font-size: .75rem; text-transform: uppercase; padding: 6px 8px; }
.leaderboard td { padding: 8px; border-top: 1px solid #10202f; }
.crew-names { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.how-to { margin-top: 34px; }
.how-to > h2 { text-align: center; margin-bottom: 18px; }
.how-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.how-card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.how-icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
.how-card b { color: #fff; }
.how-card p { color: var(--muted); font-size: .87rem; margin-top: 6px; line-height: 1.5; }
.home-footer { text-align: center; margin-top: 30px; }

.lobby-container { max-width: 640px; margin: 0 auto; padding: 26px 16px 50px; text-align: center; }
.lobby-card { text-align: left; margin-bottom: 14px; }
.room-code-display { margin: 18px 0 6px; font-size: 1.1rem; }
.room-code-display .code { font-family: monospace; font-size: 1.6rem; color: var(--cyan); letter-spacing: .25em; margin: 0 8px; }
.share-hint { color: var(--muted); margin-bottom: 22px; font-size: .9rem; }
.player-list { list-style: none; }
.player-item { display: flex; align-items: center; gap: 10px; padding: 9px 4px; border-bottom: 1px solid #10202f; }
.player-dot { width: 13px; height: 13px; border-radius: 50%; box-shadow: 0 0 8px currentColor; flex: none; }
.player-name { font-weight: 600; }
.host-badge {
    background: #103a50; color: var(--cyan); font-size: .65rem;
    border: 1px solid #2a6a94; padding: 2px 7px; border-radius: 20px; letter-spacing: .1em;
}
.waiting-msg { margin-top: 22px; color: var(--muted); }
.blink { animation: pulse 1.6s infinite; }
.start-hint { color: var(--muted); font-size: .85rem; margin-top: 10px; }

/* ═══ GAME SCREEN ═══ */
.game-shell {
    min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column;
    max-width: 860px; margin: 0 auto;
    padding: 0 10px calc(140px + env(safe-area-inset-bottom));
    position: relative;
}
#flash { position: fixed; inset: 0; pointer-events: none; z-index: 5; }
#flash.bad { animation: badFlash .55s; }
@keyframes badFlash { 0% { background: rgba(255, 40, 40, .35); } 100% { background: transparent; } }
.game-shell.shaking { animation: shake .5s; }
@keyframes shake {
    0%, 100% { transform: translate(0); } 25% { transform: translate(-9px, 4px); }
    50% { transform: translate(8px, -5px); } 75% { transform: translate(-5px, -2px); }
}

#hud-top {
    display: flex; align-items: center; gap: 10px;
    padding: calc(10px + env(safe-area-inset-top)) 2px 6px;
}
.mini-logo { font-weight: 800; letter-spacing: .06em; color: var(--cyan); white-space: nowrap; }
.gauge-wrap { flex: 1; max-width: 150px; }
.g-label { font-size: .58rem; color: var(--muted); letter-spacing: .14em; }
.g-bar { height: 9px; background: #081220; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.g-fill { height: 100%; transition: width .4s; }
.g-fill.hull { background: linear-gradient(90deg, #e03030, #ffbf5e, #46e05a); }
.g-fill.o2 { background: var(--cyan); }
.g-fill.o2.low { background: var(--danger); animation: pulse .6s infinite; }
.g-fill.noise { background: linear-gradient(90deg, #2a6a4a, #ffbf5e, #ff4545); }
#depth-chip { margin-left: auto; font-family: monospace; font-size: .92rem; color: var(--phos); white-space: nowrap; }
.hud-icon-btn {
    background: var(--panel); border: 1px solid var(--line); color: var(--text);
    width: 34px; height: 34px; border-radius: 10px; font-size: .95rem; cursor: pointer;
}

#crew-strip { display: flex; flex-wrap: wrap; gap: 5px; padding: 3px 0 8px; }
.crew-pip {
    display: flex; align-items: center; gap: 6px; font-size: .7rem;
    background: rgba(11, 21, 34, .85); border: 1px solid #142638; border-radius: 20px;
    padding: 3px 10px 3px 5px;
}
.crew-pip .dot { width: 10px; height: 10px; border-radius: 50%; }
.crew-pip.away { opacity: .45; }

#event-banner {
    position: absolute; top: 30%; left: 50%; transform: translateX(-50%); z-index: 12;
    font-size: clamp(1rem, 4vw, 1.5rem); font-weight: 800; letter-spacing: .1em;
    color: #d6f6ff; text-shadow: 0 0 18px rgba(77, 210, 255, .8); text-align: center;
    opacity: 0; pointer-events: none; transition: opacity .25s; white-space: nowrap;
}
#event-banner.show { opacity: 1; }
#event-banner.bad { color: #ffc0b0; text-shadow: 0 0 18px rgba(255, 69, 69, .8); }
#event-banner.good { color: #c8ffd8; text-shadow: 0 0 18px rgba(70, 224, 138, .8); }

#station-tabs { display: flex; gap: 6px; padding-bottom: 8px; flex-wrap: wrap; }
.tab-btn {
    padding: 9px 16px; border-radius: 12px; background: var(--panel);
    border: 1px solid var(--line); color: var(--muted); cursor: pointer;
    font-weight: 700; font-size: .85rem; letter-spacing: .04em; font-family: inherit;
}
.tab-btn.active { color: #fff; border-color: var(--cyan); box-shadow: 0 0 12px rgba(77, 210, 255, .3); }
.tab-btn.alarm { border-color: var(--danger); animation: pulse .7s infinite; }

#stage { flex: 1; min-height: 0; }
.center-note { color: var(--muted); text-align: center; padding: 40px 20px; }

.station-panel {
    background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
    padding: 14px;
}
.station-desc { font-size: .8rem; color: var(--muted); margin-bottom: 10px; line-height: 1.4; }

/* sonar */
#sonar-canvas { width: 100%; border-radius: 12px; background: #02120a; display: block; }
.sonar-row { display: flex; gap: 10px; margin-top: 10px; align-items: center; }
.sonar-row .btn { flex: none; }

/* helm */
.helm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: center; }
@media (max-width: 620px) { .helm-grid { grid-template-columns: 1fr; } }
#compass-canvas { width: 100%; max-width: 280px; margin: 0 auto; display: block; }
.throttle-col { display: flex; flex-direction: column; gap: 8px; }
.throttle-btn {
    padding: 12px; border-radius: 10px; background: var(--panel2);
    border: 1px solid var(--line); color: var(--text); cursor: pointer;
    font-weight: 800; letter-spacing: .08em; font-family: inherit;
}
.throttle-btn.active { border-color: var(--amber); color: var(--amber); box-shadow: 0 0 12px rgba(255, 191, 94, .35); }
.rudder-wrap { grid-column: 1 / -1; }
.rudder-wrap input { margin: 4px 0 0; accent-color: var(--amber); }
.rudder-labels { display: flex; justify-content: space-between; font-size: .7rem; color: var(--muted); }
#obstacle-warn {
    grid-column: 1 / -1; text-align: center; font-weight: 800; letter-spacing: .1em;
    color: var(--danger); min-height: 22px;
}

/* engineering */
.power-row {
    display: flex; align-items: center; gap: 10px; padding: 9px 4px;
    border-bottom: 1px solid #10202f;
}
.power-row .sys { width: 110px; font-weight: 700; font-size: .88rem; }
.pips { display: flex; gap: 4px; flex: 1; }
.pip { width: 22px; height: 14px; border-radius: 4px; background: #0a1826; border: 1px solid var(--line); }
.pip.on { background: var(--amber); box-shadow: 0 0 8px rgba(255, 191, 94, .5); }
.power-row .btn { padding: 4px 12px; font-size: 1rem; }
.budget-line { text-align: center; font-size: .8rem; color: var(--muted); padding: 8px 0; }
.breach-row {
    display: flex; align-items: center; gap: 10px; padding: 8px 6px; margin-top: 6px;
    background: rgba(255, 69, 69, .08); border: 1px solid #5a2020; border-radius: 10px;
}
.breach-bar { flex: 1; height: 10px; background: #180a0a; border-radius: 5px; overflow: hidden; }
.breach-fill { height: 100%; background: var(--phos); transition: width .3s; }

/* weapons */
.weapons-grid { display: flex; flex-direction: column; gap: 12px; align-items: center; }
#bearing-canvas { width: 100%; max-width: 260px; display: block; }
.bearing-wrap { width: 100%; }
.bearing-wrap input { accent-color: var(--danger); }
#bearing-read { text-align: center; font-family: monospace; font-size: 1.6rem; color: var(--danger); }
.fire-btn {
    width: 100%; max-width: 280px; padding: 16px; border-radius: 14px;
    background: linear-gradient(180deg, #7a1a1a, #4a0e0e); border: 2px solid #c04040;
    color: #ffd8d8; font-weight: 900; font-size: 1.1rem; letter-spacing: .1em;
    cursor: pointer; font-family: inherit;
}
.fire-btn:disabled { opacity: .4; }
.ammo-row { display: flex; gap: 6px; }
.torp { width: 26px; height: 10px; border-radius: 5px; background: var(--danger); }
.torp.spent { background: #2a1a1a; }
#contact-line { color: var(--danger); font-weight: 800; letter-spacing: .06em; min-height: 20px; }

/* chat dock */
#chat-dock {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
    background: linear-gradient(0deg, rgba(5, 11, 20, .97) 70%, transparent);
    padding: 6px 12px calc(8px + env(safe-area-inset-bottom));
    max-width: 860px; margin: 0 auto;
}
#chat-log {
    max-height: 84px; overflow-y: auto; display: flex; flex-direction: column;
    gap: 2px; font-size: .8rem; padding-bottom: 4px;
}
.chat-line b { margin-right: 4px; }
.chat-line.sys { color: var(--cyan); font-style: italic; }
#chat-bar { display: flex; gap: 6px; }
#chat-bar input { margin: 0; flex: 1; padding: 8px 12px; }

/* result overlay */
.overlay {
    position: fixed; inset: 0; z-index: 40; display: flex; align-items: center;
    justify-content: center; background: rgba(2, 6, 12, .86); padding: 14px;
}
.overlay-card {
    background: var(--panel); border: 1px solid #2a4a6a; border-radius: 16px;
    width: min(500px, 100%); padding: 26px; text-align: center;
}
#result-title { font-size: 1.6rem; letter-spacing: .12em; }
#result-title.win { color: var(--phos); text-shadow: 0 0 20px rgba(70, 224, 138, .5); }
#result-title.lose { color: var(--danger); text-shadow: 0 0 20px rgba(255, 69, 69, .5); }
.result-time { font-family: monospace; font-size: 2.1rem; color: var(--cyan); margin: 10px 0; }
.crew-results { margin: 12px 0; text-align: left; }
.crew-result-row {
    display: flex; align-items: center; gap: 9px; padding: 7px 6px;
    border-bottom: 1px solid #10202f; font-size: .88rem;
}
.crew-result-row .st { margin-left: auto; color: var(--muted); font-size: .78rem; }
.results-actions { display: flex; gap: 10px; justify-content: center; margin-top: 14px; flex-wrap: wrap; align-items: center; }

@media (max-width: 700px) {
    .mini-logo { display: none; }
    .gauge-wrap { max-width: none; }
}