@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Share+Tech+Mono&display=swap');

:root {
    --bg-color: #08020f;
    --neon-pink: #ff007f;
    --neon-cyan: #00f0ff;
    --neon-purple: #8b00ff;
    --neon-yellow: #ffff00;
    --neon-green: #39ff14;
    --text-color: #ffffff;
    --panel-bg: rgba(13, 3, 29, 0.65);
    --border-color: rgba(255, 0, 127, 0.4);
    --glow-shadow: 0 0 15px rgba(255, 0, 127, 0.5), 0 0 30px rgba(139, 0, 255, 0.3);
    --cyan-glow: 0 0 15px rgba(0, 240, 255, 0.5);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Orbitron', sans-serif;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* CRT Scanline Overlay */
.crt-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%);
    background-size: 100% 4px;
    z-index: 5;
    pointer-events: none;
    opacity: 0.4;
}

.crt-vignette {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.8);
    z-index: 6;
    pointer-events: none;
}

/* HUD elements */
.hud-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px;
    font-family: 'Share Tech Mono', monospace;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
}

.hud-panel {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 12px 20px;
    border-radius: 8px;
    box-shadow: var(--glow-shadow);
    color: var(--neon-cyan);
    font-size: 1.2rem;
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 15px;
}

.hud-panel span {
    color: #fff;
    font-weight: bold;
    text-shadow: 0 0 5px var(--neon-cyan);
}

.hud-lives {
    display: flex;
    gap: 8px;
    align-items: center;
}

.heart-icon {
    width: 18px;
    height: 18px;
    fill: var(--neon-pink);
    filter: drop-shadow(0 0 4px var(--neon-pink));
    transition: transform 0.3s ease;
}

.heart-icon.lost {
    fill: #333;
    filter: none;
    transform: scale(0.8);
}

.hud-bottom {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    width: 100%;
}

/* Weapon Heatbar */
.weapon-heat-container {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.weapon-label {
    font-size: 0.9rem;
    color: var(--neon-pink);
    text-shadow: 0 0 5px var(--neon-pink);
}

.heat-bar-outer {
    width: 180px;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.heat-bar-inner {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
    transition: width 0.1s linear, background-color 0.2s ease;
}

.heat-bar-inner.overheated {
    background: var(--neon-yellow) !important;
    animation: pulse 0.5s infinite alternate;
}

/* Menus & Modals */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20;
    background: rgba(8, 2, 15, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--panel-bg);
    border: 2px solid var(--neon-pink);
    border-radius: 16px;
    padding: 40px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 0 30px rgba(255, 0, 127, 0.4), inset 0 0 20px rgba(139, 0, 255, 0.2);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .modal-content {
    transform: scale(1);
}

h1 {
    font-size: 2.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--neon-cyan), #ffffff, var(--neon-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
    animation: glitch 3s infinite alternate;
}

h2 {
    font-size: 1.8rem;
    color: var(--neon-cyan);
    text-shadow: var(--cyan-glow);
    text-transform: uppercase;
}

p {
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    line-height: 1.6;
    color: #ccc;
}

.accent-text {
    color: var(--neon-cyan);
    text-shadow: 0 0 5px var(--neon-cyan);
}

/* Form inputs */
.form-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

input[type="text"] {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 20px;
    color: #fff;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    text-align: center;
    width: 100%;
    max-width: 300px;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus {
    border-color: var(--neon-cyan);
    box-shadow: var(--cyan-glow);
}

/* Custom buttons */
.btn {
    background: transparent;
    border: 2px solid var(--neon-cyan);
    color: var(--neon-cyan);
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 14px 30px;
    border-radius: 8px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: inset 0 0 0 rgba(0, 240, 255, 0), var(--cyan-glow);
    width: 100%;
    max-width: 300px;
}

.btn:hover {
    background: var(--neon-cyan);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--neon-cyan);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(1px);
}

.btn-pink {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
    box-shadow: inset 0 0 0 rgba(255, 0, 127, 0), 0 0 10px rgba(255, 0, 127, 0.3);
}

.btn-pink:hover {
    background: var(--neon-pink);
    color: #fff;
    box-shadow: 0 0 20px var(--neon-pink);
}

/* Leaderboard list */
.leaderboard-list {
    width: 100%;
    max-height: 250px;
    overflow-y: auto;
    margin: 15px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 5px;
}

.leaderboard-list::-webkit-scrollbar {
    width: 6px;
}

.leaderboard-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 3px;
}

.leaderboard-list::-webkit-scrollbar-thumb {
    background: var(--neon-pink);
    border-radius: 3px;
}

.leaderboard-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 8px 15px;
    border-radius: 6px;
    font-family: 'Share Tech Mono', monospace;
    border-left: 3px solid var(--neon-purple);
    transition: transform 0.2s ease;
}

.leaderboard-row:hover {
    transform: scale(1.02);
    background: rgba(255, 255, 255, 0.06);
}

.leaderboard-rank {
    font-weight: bold;
    color: var(--neon-cyan);
    width: 25px;
}

.leaderboard-name {
    flex-grow: 1;
    text-align: left;
    margin-left: 10px;
    color: #fff;
}

.leaderboard-score {
    font-weight: bold;
    color: var(--neon-pink);
}

/* Instructions Panel */
.instructions-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 8px;
    width: 100%;
    font-family: 'Share Tech Mono', monospace;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.instruction-line {
    display: flex;
    justify-content: space-between;
}

.key-cap {
    background: #333;
    border: 1px solid #555;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.85rem;
    box-shadow: 0 2px 0 #111;
    color: #fff;
}

/* Animations */
@keyframes pulse {
    0% {
        box-shadow: 0 0 5px var(--neon-yellow);
        opacity: 0.8;
    }
    100% {
        box-shadow: 0 0 15px var(--neon-yellow);
        opacity: 1;
    }
}

@keyframes glitch {
    0% {
        text-shadow: 0 0 10px rgba(0, 240, 255, 0.5), 2px 0 0 var(--neon-pink), -2px 0 0 var(--neon-cyan);
    }
    50% {
        text-shadow: 0 0 20px rgba(255, 0, 127, 0.5), -2px 0 0 var(--neon-pink), 2px 0 0 var(--neon-cyan);
    }
    100% {
        text-shadow: 0 0 15px rgba(0, 240, 255, 0.5), 1px -1px 0 var(--neon-pink), -1px 1px 0 var(--neon-cyan);
    }
}