:root {
    --bg-color: #05050A;
    --panel-bg: rgba(10, 10, 20, 0.85);
    --border-glow: #0ff;
    --text-main: #e0e0e0;
    --text-muted: #888;
    --accent-color: #0ff;
    --danger-color: #f0f;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

/* Background Stars Parallax (Optional CSS fallback, but renderer.js will draw it too) */
.stars {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    background: radial-gradient(ellipse at bottom, #1B2735 0%, #090A0F 100%);
}

#gameCanvas {
    display: block;
    width: 100%;
    height: 100%;
}

.hidden {
    display: none !important;
}

/* UI Overlay Layer */
#uiOverlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
}

/* Leaderboard */
#leaderboard {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 250px;
    background: var(--panel-bg);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

#leaderboard h3 {
    font-family: var(--font-heading);
    font-size: 14px;
    color: var(--accent-color);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
}

#leaderboardList {
    list-style: none;
    font-size: 14px;
}

#leaderboardList li {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#leaderboardList li:last-child {
    border-bottom: none;
}

#leaderboardList li .name {
    color: var(--text-main);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 150px;
}

#leaderboardList li .mass {
    color: var(--accent-color);
    font-weight: 600;
}

/* HUD Stats */
#hud {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
}

.stat-box {
    background: var(--panel-bg);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 8px;
    padding: 10px 20px;
    text-align: center;
    min-width: 120px;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.stat-box .label {
    display: block;
    font-family: var(--font-heading);
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
}

.stat-box .value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-color);
    text-shadow: 0 0 8px var(--accent-color);
}

/* Overlay Screens (Login & Death) */
.overlay-screen {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    backdrop-filter: blur(8px);
    overflow-y: auto;
    padding: 20px;
}

.panel {
    background: var(--panel-bg);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid rgba(0, 255, 255, 0.4);
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.2), inset 0 0 20px rgba(0, 255, 255, 0.05);
    text-align: center;
    max-width: 400px;
    width: 100%;
    margin: auto;
}

.glow-text {
    font-family: var(--font-heading);
    font-size: 36px;
    color: #fff;
    text-shadow: 0 0 10px var(--accent-color), 0 0 20px var(--accent-color), 0 0 40px var(--accent-color);
    margin-bottom: 10px;
}

.error-text {
    text-shadow: 0 0 10px var(--danger-color), 0 0 20px var(--danger-color), 0 0 40px var(--danger-color);
}

.panel p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 14px;
}

input[type="text"] {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(0, 255, 255, 0.5);
    border-radius: 6px;
    color: #fff;
    font-size: 16px;
    font-family: var(--font-body);
    margin-bottom: 20px;
    outline: none;
    transition: box-shadow 0.3s;
    text-align: center;
}

input[type="text"]:focus {
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    border-color: var(--accent-color);
}

button {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 2px solid var(--accent-color);
    border-radius: 6px;
    color: var(--accent-color);
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.2) inset;
}

button:hover {
    background: var(--accent-color);
    color: #000;
    box-shadow: 0 0 20px var(--accent-color), 0 0 40px var(--accent-color);
}

.instructions {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.instructions p {
    margin-bottom: 5px;
    font-size: 12px;
    color: #aaa;
}

.instructions strong {
}

/* Kill Feed */
#killFeed {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 300px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    z-index: 50;
}

.kill-feed-item {
    background: rgba(10, 10, 20, 0.75);
    border: 1px solid rgba(255, 0, 255, 0.4);
    border-left: 3px solid var(--danger-color);
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 13px;
    color: #fff;
    box-shadow: 0 0 10px rgba(255, 0, 255, 0.15);
    backdrop-filter: blur(4px);
    transition: opacity 0.5s ease;
    animation: slideIn 0.3s ease-out forwards;
}

.kill-feed-item .killer {
    color: var(--accent-color);
    font-weight: 700;
}

.kill-feed-item .victim {
    color: var(--danger-color);
    font-weight: 700;
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Color Selector & Preview */
.color-selector-container {
    margin-bottom: 15px;
}

.color-selector-label {
    display: block;
    font-family: var(--font-heading);
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.color-swatches {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 15px;
}

.color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.color-swatch:hover {
    transform: scale(1.2);
}

.color-swatch.active {
    border-color: #fff;
    transform: scale(1.15);
}

.preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
}

#colorPreviewCanvas {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

/* Multi-Kill Announcement Container */
#announcementContainer {
    position: absolute;
    top: 25%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.announcement {
    text-align: center;
    font-family: var(--font-heading);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0;
    animation: announcementSequence 3.0s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.announcement-title {
    font-size: 48px;
    margin: 0;
    padding: 0;
    text-shadow: 0 0 10px currentColor, 0 0 20px currentColor, 0 0 40px currentColor;
    animation: titlePulse 0.5s ease-in-out infinite alternate;
}

.announcement-sub {
    font-family: var(--font-body);
    font-size: 16px;
    color: #fff;
    text-shadow: 0 0 8px rgba(0,0,0,0.8);
    font-weight: 600;
    margin-top: 5px;
}

/* Local player multi-kill special effects */
.announcement.local-player {
    animation: announcementSequenceLocal 3.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.announcement.local-player .announcement-title {
    font-size: 64px;
    animation: titlePulse 0.3s ease-in-out infinite alternate, shakeText 0.15s infinite;
}

@keyframes announcementSequence {
    0% { transform: scale(0.4); opacity: 0; }
    8% { transform: scale(1.0); opacity: 1; }
    15% { transform: scale(1.0); opacity: 1; }
    85% { transform: scale(1.0); opacity: 1; filter: blur(0px); }
    100% { transform: scale(1.3) translateY(-30px); opacity: 0; filter: blur(10px); }
}

@keyframes announcementSequenceLocal {
    0% { transform: scale(0.3); opacity: 0; }
    6% { transform: scale(1.15); opacity: 1; }
    10% { transform: scale(1.0); opacity: 1; }
    80% { transform: scale(1.0); opacity: 1; filter: blur(0px); }
    100% { transform: scale(1.4) translateY(-45px); opacity: 0; filter: blur(15px); }
}

@keyframes titlePulse {
    from { transform: scale(0.98); }
    to { transform: scale(1.02); }
}

@keyframes shakeText {
    0% { transform: translate(1px, 1px) rotate(0deg); }
    10% { transform: translate(-1px, -2px) rotate(-1deg); }
    20% { transform: translate(-3px, 0px) rotate(1deg); }
    30% { transform: translate(0px, 2px) rotate(0deg); }
    40% { transform: translate(1px, -1px) rotate(1deg); }
    50% { transform: translate(-1px, 2px) rotate(-1deg); }
    60% { transform: translate(-3px, 1px) rotate(0deg); }
    70% { transform: translate(2px, 1px) rotate(-1deg); }
    80% { transform: translate(-1px, -1px) rotate(1deg); }
    90% { transform: translate(2px, 2px) rotate(0deg); }
    100% { transform: translate(1px, -2px) rotate(-1deg); }
}

/* Footer */
#footer {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.35);
    font-family: var(--font-body);
    font-size: 11px;
    text-align: center;
    pointer-events: none;
    z-index: 110;
    letter-spacing: 0.5px;
}

/* Mobile Controls */
body, canvas {
    touch-action: none; /* Prevent scroll and pinch-zoom */
    -webkit-touch-callout: none;
    -webkit-user-select: none;
}

#mobileControls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 200;
}

.mobile-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(10, 10, 20, 0.6);
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3) inset;
    backdrop-filter: blur(4px);
    pointer-events: auto;
    cursor: pointer;
    transition: transform 0.1s;
}

.mobile-btn:active {
    transform: scale(0.9);
    background: rgba(0, 255, 255, 0.2);
    box-shadow: 0 0 25px var(--accent-color) inset;
}

/* Landscape Overlay */
#rotateOverlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: #000;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-family: var(--font-heading);
    font-size: 24px;
    text-align: center;
    padding: 20px;
}

@media (orientation: landscape) {
    #rotateOverlay {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .panel {
        padding: 20px;
    }
    .glow-text {
        font-size: 24px;
    }
    #hud {
        bottom: auto;
        top: 10px;
        transform: translateX(-50%) scale(0.8);
    }
    #leaderboard {
        transform: scale(0.7);
        transform-origin: top right;
    }
    #killFeed {
        top: 60px;
        left: 10px;
        transform: scale(0.7);
        transform-origin: top left;
    }
}

/* Low-height landscape optimization */
@media (max-height: 520px) {
    .panel {
        padding: 15px 25px;
        max-width: 380px;
        border-radius: 8px;
    }
    .glow-text {
        font-size: 22px;
        margin-bottom: 4px;
    }
    .panel p {
        margin-bottom: 8px;
        font-size: 11px;
    }
    input[type="text"] {
        padding: 8px 10px;
        font-size: 13px;
        margin-bottom: 8px;
    }
    .color-selector-container {
        margin-bottom: 8px;
    }
    .color-selector-label {
        font-size: 9px;
        margin-bottom: 4px;
    }
    .color-swatches {
        gap: 8px;
        margin-bottom: 8px;
    }
    .color-swatch {
        width: 18px;
        height: 18px;
    }
    .preview-container {
        margin-bottom: 8px;
    }
    #colorPreviewCanvas {
        width: 50px;
        height: 50px;
    }
    button {
        padding: 8px 10px;
        font-size: 13px;
    }
    .instructions {
        margin-top: 8px;
        padding-top: 4px;
    }
    .instructions p {
        font-size: 9px;
        margin-bottom: 1px;
    }
    #footer {
        font-size: 9px;
        bottom: 4px;
    }
}

/* Virtual Joystick Styling */
#joystickBase {
    position: absolute;
    width: 90px;
    height: 90px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(0, 255, 255, 0.25);
    border-radius: 50%;
    pointer-events: none;
    z-index: 199;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.15);
    backdrop-filter: blur(2px);
}

#joystickHandle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 36px;
    height: 36px;
    background: rgba(0, 255, 255, 0.6);
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    transition: none;
}