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

:root {
    --bg-dark: #0a0a0f;
    --bg-card: #1a1a2e;
    --primary: #e94560;
    --secondary: #16213e;
    --accent: #0f3460;
    --text: #eaeaea;
    --text-dim: #8892a0;
    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #ef4444;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    touch-action: none;
    user-select: none;
}

.hidden {
    display: none !important;
}

/* Loading Screen */
#loading-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    z-index: 1000;
}

.loader {
    text-align: center;
}

.zombie-icon {
    font-size: 4rem;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.loader h1 {
    font-size: 2.5rem;
    margin: 1rem 0 0.5rem;
    color: var(--primary);
}

.progress-bar {
    width: 200px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
    margin-top: 1rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.3s;
}

/* Screens */
.screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    z-index: 100;
}

/* Menu Screen */
.menu-container {
    text-align: center;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
}

.game-title {
    font-size: 3rem;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(233, 69, 96, 0.5);
}

.subtitle {
    color: var(--text-dim);
    margin-bottom: 2rem;
}

.player-info {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 12px;
}

.player-info .stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.player-info .icon {
    font-size: 1.2rem;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-secondary {
    background: var(--secondary);
    color: var(--text);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.equipped-weapon {
    margin-top: 2rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}

#equipped-weapon-name {
    color: var(--warning);
    font-weight: 600;
}

/* Lobby Screen */
.lobby-container {
    text-align: center;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
}

.lobby-container h2 {
    margin-bottom: 0.5rem;
}

#room-code {
    color: var(--warning);
    font-family: monospace;
    font-size: 1.5rem;
    letter-spacing: 0.2em;
}

.btn-copy {
    background: var(--secondary);
    border: none;
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 1.5rem;
}

.players-list {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    min-height: 150px;
}

.player-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.player-row:last-child {
    margin-bottom: 0;
}

.player-row.ready {
    background: rgba(74, 222, 128, 0.2);
}

.player-row.not-ready {
    background: rgba(255, 255, 255, 0.05);
}

.player-name {
    font-weight: 500;
}

.player-status {
    font-size: 0.85rem;
}

.player-status.ready {
    color: var(--success);
}

.player-status.not-ready {
    color: var(--text-dim);
}

.lobby-buttons {
    display: flex;
    gap: 1rem;
}

.lobby-buttons .btn {
    flex: 1;
}

.lobby-hint {
    margin-top: 1rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.controls-hint {
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--secondary);
    border-radius: 8px;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.controls-hint p {
    margin: 0.25rem 0;
}

/* Shop Screen */
.shop-container {
    width: 100%;
    height: 100%;
    padding: 1rem;
    overflow-y: auto;
}

.shop-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--secondary);
}

.btn-back {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
}

.shop-header .coins {
    font-size: 1.1rem;
    color: var(--warning);
}

.weapons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
}

.weapon-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.weapon-card.owned {
    border-color: var(--success);
}

.weapon-card.equipped {
    border-color: var(--warning);
}

.weapon-card.locked {
    opacity: 0.5;
}

.weapon-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.weapon-name {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.weapon-category {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
}

.weapon-stats {
    font-size: 0.75rem;
    color: var(--text-dim);
    margin: 0.5rem 0;
}

.weapon-price {
    font-size: 0.9rem;
    color: var(--warning);
    margin-bottom: 0.5rem;
}

.weapon-card .btn {
    width: 100%;
    padding: 0.5rem;
    font-size: 0.85rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    max-width: 320px;
    width: 90%;
}

.modal-content h3 {
    margin-bottom: 1rem;
}

.modal-content input {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    background: var(--secondary);
    color: var(--text);
    font-size: 1.5rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
}

.modal-buttons {
    display: flex;
    gap: 0.75rem;
}

.modal-buttons .btn {
    flex: 1;
}

/* Game Container */
#game-container {
    position: fixed;
    inset: 0;
    z-index: 50;
    /* Don't capture touches at bottom where joysticks are */
    pointer-events: none;
}

#game-container canvas {
    display: block;
    pointer-events: auto;
    /* Leave space for joysticks */
    height: calc(100% - 200px) !important;
}

/* Joystick Zones */
.joystick-zone {
    position: fixed;
    bottom: 0;
    width: 50%;
    height: 200px;
    z-index: 200;
    touch-action: none;
    pointer-events: auto;
}

#joystick-left {
    left: 0;
    background: linear-gradient(to top, rgba(74, 222, 128, 0.25) 0%, rgba(74, 222, 128, 0.1) 50%, transparent 100%);
    border-top: 1px solid rgba(74, 222, 128, 0.3);
}

#joystick-right {
    right: 0;
    background: linear-gradient(to top, rgba(233, 69, 96, 0.25) 0%, rgba(233, 69, 96, 0.1) 50%, transparent 100%);
    border-top: 1px solid rgba(233, 69, 96, 0.3);
}

/* Joystick hint labels */
#joystick-left::after {
    content: 'MOVE';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    font-weight: bold;
    color: rgba(74, 222, 128, 0.7);
    text-transform: uppercase;
    letter-spacing: 2px;
}

#joystick-right::after {
    content: 'SHOOT';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    font-weight: bold;
    color: rgba(233, 69, 96, 0.7);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* HUD */
#hud {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 70;
    padding: env(safe-area-inset-top, 10px) 10px env(safe-area-inset-bottom, 10px);
}

/* Debug button */
.debug-btn {
    position: absolute;
    top: 50px;
    right: 10px;
    padding: 8px 12px;
    background: rgba(239, 68, 68, 0.8);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 12px;
    font-weight: bold;
    pointer-events: auto;
    cursor: pointer;
    z-index: 100;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    margin-bottom: auto;
}

.hud-top > div {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9rem;
}

.hud-top .label {
    opacity: 0.7;
}

.hud-bottom {
    position: absolute;
    bottom: 210px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 16px;
    border-radius: 12px;
}

.health-bar {
    width: 200px;
    height: 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.health-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--danger), var(--success));
    width: 100%;
    transition: width 0.2s;
}

.health-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.ammo-info {
    font-size: 1rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

#hud-weapon-name {
    margin-left: 0.5rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.reload-bar {
    width: 150px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.reload-fill {
    height: 100%;
    background: var(--warning);
    width: 0%;
    transition: width 0.05s linear;
}

/* Wave Announcement */
#wave-announcement {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 80;
    animation: fadeInOut 3s forwards;
}

#wave-announcement h2 {
    font-size: 3rem;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(233, 69, 96, 0.5);
}

#wave-announcement p {
    font-size: 1.2rem;
    color: var(--text);
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
    10% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    80% { opacity: 1; }
    100% { opacity: 0; }
}

/* Wave Complete Screen */
#wave-complete {
    background: rgba(0, 0, 0, 0.85);
    z-index: 150;
}

.wave-complete-container {
    text-align: center;
    padding: 2rem;
    max-width: 350px;
    width: 90%;
    background: var(--bg-card);
    border-radius: 20px;
    border: 2px solid var(--success);
}

.wave-complete-container h2 {
    font-size: 1.8rem;
    color: var(--success);
    margin-bottom: 0.5rem;
}

.wave-bonus {
    font-size: 2rem;
    color: var(--warning);
    font-weight: bold;
    margin: 1rem 0;
}

.next-wave-text {
    color: var(--text-dim);
    margin-bottom: 1.5rem;
}

.wave-complete-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.wave-complete-buttons .btn {
    width: 100%;
}

/* Game Over Screen */
.gameover-container {
    text-align: center;
    padding: 2rem;
    max-width: 400px;
    width: 100%;
}

.gameover-container h1 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.final-stats {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    border-bottom: 1px solid var(--secondary);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row span:last-child {
    font-weight: 600;
    color: var(--warning);
}

.leaderboard {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.leaderboard-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem;
}

.leaderboard-row .rank {
    width: 30px;
    color: var(--text-dim);
}

.leaderboard-row .name {
    flex: 1;
    text-align: left;
}

.leaderboard-row .kills {
    color: var(--warning);
}

.gameover-container .btn {
    width: 100%;
    margin-bottom: 0.75rem;
}

/* Premium Weapons */
.weapon-card.premium {
    border-color: #ffd700;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(255, 215, 0, 0.1) 100%);
}

.weapon-card.premium .weapon-name {
    color: #ffd700;
}

.premium-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #000;
    font-size: 0.65rem;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.premium-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: #ffd700;
    font-weight: 600;
}

.premium-price .star-icon {
    font-size: 1rem;
}

.btn-premium {
    background: linear-gradient(135deg, #ffd700, #ffaa00);
    color: #000;
    font-weight: bold;
}

.btn-premium:hover {
    background: linear-gradient(135deg, #ffdd33, #ffbb33);
}

.weapon-description {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-style: italic;
    margin-top: 4px;
}