* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a3e 50%, #0f2040 100%);
    color: #fff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
    overflow-x: hidden;
}

.hidden {
    display: none !important;
}

/* Ana Menü */
.menu-screen {
    width: 100%;
    max-width: 550px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 0 50px rgba(138, 43, 226, 0.3);
    backdrop-filter: blur(10px);
    text-align: center;
    border: 2px solid rgba(138, 43, 226, 0.3);
}

.menu-content h1 {
    font-size: 2.8em;
    margin-bottom: 5px;
    background: linear-gradient(135deg, #8a2be2, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titlePulse 2s ease-in-out infinite;
}

@keyframes titlePulse {
    0%, 100% { transform: scale(1); filter: brightness(1); }
    50% { transform: scale(1.02); filter: brightness(1.2); }
}

.menu-subtitle {
    font-size: 1.1em;
    opacity: 0.7;
    margin-bottom: 25px;
}

.difficulty-selection {
    margin-bottom: 25px;
}

.difficulty-selection h3 {
    margin-bottom: 12px;
    color: #ffd700;
    font-size: 1.1em;
}

.difficulty-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.difficulty-btn {
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    padding: 12px 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
    text-align: center;
}

.difficulty-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.difficulty-btn.selected {
    background: linear-gradient(135deg, rgba(138, 43, 226, 0.4), rgba(0, 212, 255, 0.2));
    border-color: #8a2be2;
    box-shadow: 0 0 20px rgba(138, 43, 226, 0.4);
}

.diff-icon {
    font-size: 1.3em;
    display: block;
    margin-bottom: 3px;
}

.diff-name {
    font-weight: bold;
    display: block;
    margin-bottom: 2px;
    font-size: 0.95em;
}

.diff-desc {
    font-size: 0.7em;
    opacity: 0.6;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

.btn {
    padding: 12px 20px;
    font-size: 15px;
    font-weight: bold;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 44px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-play {
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: white;
    font-size: 1.2em;
    padding: 15px;
    box-shadow: 0 4px 15px rgba(0, 184, 148, 0.4);
}

.btn-tutorial {
    background: linear-gradient(135deg, #fd79a8, #e84393);
    color: white;
}

.btn-scores {
    background: linear-gradient(135deg, #fdcb6e, #f39c12);
    color: white;
}

.btn-achievements {
    background: linear-gradient(135deg, #a29bfe, #6c5ce7);
    color: white;
}

.btn-menu {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    color: white;
}

.btn-upgrade {
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: white;
}

.btn-sell {
    background: linear-gradient(135deg, #e17055, #d63031);
    color: white;
}

.btn-help {
    background: linear-gradient(135deg, #fd79a8, #e84393);
    color: white;
    min-width: 50px;
}

.btn-start {
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: white;
}

.btn-pause {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
    min-width: 50px;
}

.btn-restart {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
}

.sound-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.sound-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    font-size: 1.3em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sound-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.sound-btn.active {
    border-color: #00b894;
    box-shadow: 0 0 12px rgba(0, 184, 148, 0.5);
}

.sound-btn:not(.active) {
    opacity: 0.4;
}

/* Tutorial Modal */
.tutorial-modal {
    width: 500px;
    max-height: 85vh;
    text-align: left;
}

.tutorial-modal h2 {
    text-align: center;
    color: #fd79a8 !important;
    text-shadow: 0 0 20px rgba(253, 121, 168, 0.5) !important;
}

.tutorial-section {
    margin-bottom: 15px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.tutorial-section h3 {
    color: #ffd700;
    margin-bottom: 8px;
    font-size: 1em;
}

.tutorial-section p {
    font-size: 0.9em;
    opacity: 0.9;
    margin: 0;
}

.tutorial-towers {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tutorial-tower {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85em;
}

.tutorial-tower .tower-icon {
    width: 25px;
    height: 25px;
    flex-shrink: 0;
}

.tutorial-enemies {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.enemy-type {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85em;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px 8px;
    border-radius: 5px;
}

.enemy-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.enemy-dot.normal { background: #ff4444; }
.enemy-dot.fast { background: #00ff88; }
.enemy-dot.tank { background: #636e72; }
.enemy-dot.healer { background: #55efc4; }
.enemy-dot.boss { background: #ff00ff; }

.tutorial-powerups {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.85em;
}

.tutorial-tips {
    font-size: 0.85em;
    padding-left: 20px;
    margin: 0;
}

.tutorial-tips li {
    margin-bottom: 4px;
}

.tutorial-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85em;
}

.tutorial-shortcuts kbd {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* Oyun Container */
.game-container {
    width: 100%;
    max-width: 850px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    padding: 15px;
    box-shadow: 0 0 40px rgba(138, 43, 226, 0.2);
    border: 2px solid rgba(138, 43, 226, 0.2);
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.game-header h1 {
    font-size: 1.5em;
    background: linear-gradient(135deg, #8a2be2, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.controls {
    display: flex;
    gap: 8px;
}

.controls .btn {
    padding: 8px 12px;
    min-width: auto;
    font-size: 1.1em;
}

/* Game Stats */
.game-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 5px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-label {
    font-size: 0.7em;
    opacity: 0.8;
    margin-bottom: 2px;
}

.stat-value {
    font-size: 1.4em;
    font-weight: bold;
}

.score-stat .stat-value { color: #ffd700; }
.wave-stat .stat-value { color: #00d4ff; }
.lives-stat .stat-value { color: #ff6b6b; }
.energy-stat .stat-value { color: #00b894; }

/* Combo Display */
.combo-display {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, #ffd700, #ff8800);
    padding: 15px 30px;
    border-radius: 15px;
    z-index: 100;
    animation: comboPopup 1s ease-out forwards;
    text-align: center;
}

@keyframes comboPopup {
    0% { transform: translate(-50%, -50%) scale(0); opacity: 0; }
    20% { transform: translate(-50%, -50%) scale(1.3); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 0; }
}

.combo-text {
    display: block;
    font-size: 0.8em;
    color: #000;
    font-weight: bold;
}

.combo-count {
    font-size: 2em;
    font-weight: bold;
    color: #000;
}

/* Wave Info */
.wave-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    font-size: 0.85em;
}

.wave-progress {
    flex: 1;
}

.wave-progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin-top: 4px;
    overflow: hidden;
}

.wave-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #00b894, #00d4ff);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

.next-wave-timer {
    background: linear-gradient(135deg, #ffd700, #ff8800);
    color: #000;
    padding: 5px 12px;
    border-radius: 5px;
    font-weight: bold;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Power-ups */
.powerups-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 8px 12px;
    margin-bottom: 10px;
}

.powerups-container h4 {
    text-align: center;
    margin-bottom: 8px;
    color: #ffd700;
    font-size: 0.85em;
}

.powerup-hint {
    font-weight: normal;
    opacity: 0.6;
    font-size: 0.9em;
}

.powerups {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.powerup-btn {
    position: relative;
    width: 55px;
    height: 55px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.powerup-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    border-color: #ffd700;
}

.powerup-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.powerup-icon {
    font-size: 1.6em;
}

.powerup-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #8a2be2;
    color: white;
    font-size: 0.7em;
    font-weight: bold;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.powerup-key {
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: #ffd700;
    font-size: 0.6em;
    font-weight: bold;
    padding: 2px 5px;
    border-radius: 3px;
}

.active-effects {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 8px;
    min-height: 24px;
}

.active-effect {
    background: linear-gradient(135deg, #ffd700, #ff8800);
    color: #000;
    padding: 3px 10px;
    border-radius: 5px;
    font-size: 0.75em;
    font-weight: bold;
    animation: effectPulse 0.5s infinite;
}

@keyframes effectPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Game Board */
.game-board-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 10px;
}

.path-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 5px;
    font-size: 0.8em;
    opacity: 0.7;
}

.path-arrow {
    color: #ff6b6b;
    font-size: 1.2em;
    animation: arrowMove 1s infinite;
}

@keyframes arrowMove {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-5px); }
}

.base-indicator {
    margin-top: 5px;
    font-size: 0.8em;
    opacity: 0.7;
}

.game-board {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 2px;
    background: linear-gradient(90deg, rgba(255, 100, 100, 0.1) 0%, rgba(0, 0, 0, 0.4) 100%);
    padding: 5px;
    border-radius: 10px;
    width: 100%;
    max-width: 650px;
    aspect-ratio: 10 / 5;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.cell {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    position: relative;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    touch-action: manipulation;
}

.cell:hover:not(.occupied) {
    background: rgba(138, 43, 226, 0.3);
    border-color: rgba(138, 43, 226, 0.6);
    box-shadow: inset 0 0 10px rgba(138, 43, 226, 0.3);
}

.cell.occupied {
    cursor: pointer;
}

.cell.occupied:hover {
    border-color: #ffd700;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* Towers */
.tower {
    width: 70%;
    height: 70%;
    border-radius: 50%;
    position: relative;
    animation: towerPulse 2s infinite;
    z-index: 2;
}

@keyframes towerPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.tower-basic {
    background: radial-gradient(circle, #8a2be2 0%, #4b0082 100%);
    box-shadow: 0 0 12px rgba(138, 43, 226, 0.8);
}

.tower-rapid {
    background: radial-gradient(circle, #00d4ff 0%, #0088cc 100%);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.8);
}

.tower-sniper {
    background: radial-gradient(circle, #ff6b00 0%, #cc3300 100%);
    box-shadow: 0 0 12px rgba(255, 107, 0, 0.8);
}

.tower-splash {
    background: radial-gradient(circle, #ffcc00 0%, #ff8800 100%);
    box-shadow: 0 0 12px rgba(255, 204, 0, 0.8);
}

.tower-freeze {
    background: radial-gradient(circle, #74b9ff 0%, #0984e3 100%);
    box-shadow: 0 0 12px rgba(116, 185, 255, 0.8);
}

.tower-laser {
    background: radial-gradient(circle, #fd79a8 0%, #e84393 100%);
    box-shadow: 0 0 12px rgba(253, 121, 168, 0.8);
}

.tower::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30%;
    height: 30%;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
}

.tower-level {
    position: absolute;
    bottom: -3px;
    right: -3px;
    background: #ffd700;
    color: #000;
    font-size: 0.55em;
    font-weight: bold;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

/* Enemies */
.enemy {
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, #ff4444 0%, #cc0000 100%);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.8);
    position: absolute;
    z-index: 1;
    transition: left 0.1s linear;
}

.enemy::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 20%;
    height: 20%;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
}

.enemy.boss {
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, #ff00ff 0%, #8800ff 100%);
    box-shadow: 0 0 20px rgba(255, 0, 255, 1);
    animation: bossGlow 0.5s infinite;
}

.enemy.fast {
    background: radial-gradient(circle, #00ff88 0%, #00aa55 100%);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.8);
}

.enemy.tank {
    width: 75%;
    height: 75%;
    background: radial-gradient(circle, #636e72 0%, #2d3436 100%);
    box-shadow: 0 0 10px rgba(99, 110, 114, 0.8);
    border: 2px solid #b2bec3;
}

.enemy.healer {
    background: radial-gradient(circle, #55efc4 0%, #00b894 100%);
    box-shadow: 0 0 10px rgba(85, 239, 196, 0.8);
}

.enemy.frozen {
    filter: brightness(1.5) hue-rotate(180deg);
    animation: frozenShake 0.2s infinite;
}

@keyframes frozenShake {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(2px); }
}

@keyframes bossGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(255, 0, 255, 1); }
    50% { box-shadow: 0 0 35px rgba(255, 0, 255, 1), 0 0 50px rgba(255, 0, 255, 0.5); }
}

.enemy-health-bar {
    position: absolute;
    top: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 2px;
    overflow: hidden;
}

.enemy-health-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff0000, #ffff00, #00ff00);
    transition: width 0.2s ease;
}

/* Projectiles */
.projectile {
    position: absolute;
    width: 8px;
    height: 8px;
    background: #ffd700;
    border-radius: 50%;
    box-shadow: 0 0 10px #ffd700;
    z-index: 10;
    pointer-events: none;
}

.laser-beam {
    position: absolute;
    height: 3px;
    background: linear-gradient(90deg, transparent, #fd79a8, #e84393, #fd79a8, transparent);
    box-shadow: 0 0 8px #fd79a8;
    z-index: 5;
    pointer-events: none;
    animation: laserFlicker 0.1s infinite;
}

@keyframes laserFlicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* Tower Selection */
.tower-selection {
    margin-bottom: 10px;
}

.tower-selection h3 {
    text-align: center;
    margin-bottom: 8px;
    font-size: 1em;
    color: #8a2be2;
}

.tower-hint {
    font-size: 0.7em;
    opacity: 0.6;
    font-weight: normal;
}

.tower-types {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
}

.tower-type {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.tower-type:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(138, 43, 226, 0.5);
    transform: translateY(-2px);
}

.tower-type.selected {
    background: linear-gradient(135deg, rgba(138, 43, 226, 0.3), rgba(0, 212, 255, 0.2));
    border-color: #8a2be2;
    box-shadow: 0 0 15px rgba(138, 43, 226, 0.4);
}

.tower-key {
    position: absolute;
    top: 3px;
    left: 3px;
    background: rgba(0, 0, 0, 0.6);
    color: #ffd700;
    font-size: 0.6em;
    font-weight: bold;
    width: 16px;
    height: 16px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tower-icon {
    width: 32px;
    height: 32px;
    margin: 0 auto 5px;
    border-radius: 50%;
}

.tower-name {
    font-weight: bold;
    margin-bottom: 3px;
    color: #fff;
    font-size: 0.75em;
}

.tower-stats {
    font-size: 0.6em;
    opacity: 0.7;
    margin-bottom: 3px;
}

.tower-stats div {
    margin: 1px 0;
}

.tower-cost {
    color: #ffd700;
    font-weight: bold;
    font-size: 0.75em;
}

/* Game Info */
.game-info {
    text-align: center;
    padding: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    font-size: 0.85em;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.selected-tower-name {
    color: #ffd700;
}

.info-tip {
    opacity: 0.6;
    font-size: 0.9em;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 0 40px rgba(138, 43, 226, 0.3);
    border: 2px solid rgba(138, 43, 226, 0.4);
    max-width: 90%;
    width: 380px;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-content h2 {
    font-size: 1.8em;
    margin-bottom: 15px;
    color: #ff4444;
    text-shadow: 0 0 15px rgba(255, 68, 68, 0.5);
}

.modal-content p {
    font-size: 1em;
    margin: 8px 0;
    color: #fff;
}

.modal-content.victory h2 {
    color: #00ff00;
    text-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
}

.victory-subtitle {
    font-size: 1.1em !important;
    color: #ffd700 !important;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 15px;
    flex-wrap: wrap;
}

/* Stats in modals */
.gameover-stats, .victory-stats, .pause-stats {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 15px;
    margin: 15px 0;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.highlight {
    color: #ffd700 !important;
    font-weight: bold;
    font-size: 1.2em;
}

.new-high-score {
    color: #ffd700;
    font-size: 1.3em;
    font-weight: bold;
    margin: 15px 0;
    padding: 10px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 136, 0, 0.2));
    border-radius: 10px;
    animation: highScorePulse 0.5s infinite;
}

@keyframes highScorePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Scores Modal */
.scores-modal {
    width: 420px;
}

.scores-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.score-tab {
    padding: 6px 12px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8em;
}

.score-tab:hover {
    background: rgba(255, 255, 255, 0.2);
}

.score-tab.active {
    background: #8a2be2;
}

.scores-list {
    max-height: 250px;
    overflow-y: auto;
}

.score-item {
    display: flex;
    align-items: center;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 6px;
}

.score-rank {
    font-size: 1.1em;
    font-weight: bold;
    color: #ffd700;
    width: 30px;
}

.score-details {
    flex: 1;
    text-align: left;
    margin-left: 10px;
}

.score-value {
    font-weight: bold;
    color: #8a2be2;
}

.score-meta {
    font-size: 0.7em;
    opacity: 0.6;
}

.no-scores {
    opacity: 0.4;
    padding: 20px;
}

/* Achievements Modal */
.achievements-modal {
    width: 480px;
}

.achievements-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 8px;
    max-height: 350px;
    overflow-y: auto;
}

.achievement-item {
    display: flex;
    align-items: center;
    padding: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.achievement-item.unlocked {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.achievement-item:not(.unlocked) {
    opacity: 0.4;
}

.achievement-item-icon {
    font-size: 1.5em;
    margin-right: 8px;
}

.achievement-item-info {
    text-align: left;
}

.achievement-item-name {
    font-weight: bold;
    font-size: 0.8em;
}

.achievement-item-desc {
    font-size: 0.65em;
    opacity: 0.7;
}

/* Achievement Popup */
.achievement-popup {
    position: fixed;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ffd700, #ff8800);
    padding: 12px 18px;
    border-radius: 10px;
    z-index: 2000;
    animation: slideIn 0.5s ease-out;
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.5);
}

@keyframes slideIn {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.achievement-content {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #000;
}

.achievement-icon {
    font-size: 1.8em;
}

.achievement-title {
    font-size: 0.7em;
    opacity: 0.7;
}

.achievement-name {
    font-weight: bold;
    font-size: 1em;
}

/* Upgrade Modal */
.upgrade-modal {
    width: 320px;
}

.upgrade-info {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 12px;
    text-align: left;
}

.upgrade-info p {
    margin: 4px 0;
    font-size: 0.9em;
}

.upgrade-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
}

/* Pause Modal */
.pause-modal h2 {
    color: #ffd700 !important;
    text-shadow: 0 0 15px rgba(255, 215, 0, 0.5) !important;
}

.pause-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Wave Announcement */
.wave-announcement {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    padding: 20px 40px;
    border-radius: 15px;
    font-size: 1.6em;
    font-weight: bold;
    color: #8a2be2;
    text-shadow: 0 0 15px rgba(138, 43, 226, 0.8);
    z-index: 999;
    animation: waveAnnounce 2s ease-out forwards;
    border: 2px solid #8a2be2;
    box-shadow: 0 0 30px rgba(138, 43, 226, 0.5);
}

@keyframes waveAnnounce {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
    15% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
    85% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
}

/* Effects */
.explosion {
    position: absolute;
    width: 150%;
    height: 150%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 200, 0, 0.9) 0%, rgba(255, 100, 0, 0.5) 50%, transparent 100%);
    animation: explode 0.4s ease-out forwards;
    pointer-events: none;
    z-index: 5;
}

@keyframes explode {
    0% { transform: scale(0); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

.freeze-effect {
    position: absolute;
    width: 180%;
    height: 180%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(116, 185, 255, 0.7) 0%, rgba(9, 132, 227, 0.3) 50%, transparent 100%);
    animation: freezeExpand 0.4s ease-out forwards;
    pointer-events: none;
    z-index: 5;
}

@keyframes freezeExpand {
    0% { transform: scale(0); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* Floating Numbers */
.floating-numbers {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1500;
}

.floating-number {
    position: absolute;
    font-weight: bold;
    font-size: 1em;
    animation: floatUp 1s ease-out forwards;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.8);
}

.floating-number.damage { color: #ff6b6b; }
.floating-number.gold { color: #ffd700; }
.floating-number.heal { color: #00ff00; }

@keyframes floatUp {
    0% { opacity: 1; transform: translateY(0) scale(1); }
    100% { opacity: 0; transform: translateY(-50px) scale(1.5); }
}

/* Particles */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1400;
}

.particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: particleFade 0.8s ease-out forwards;
}

@keyframes particleFade {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .menu-content h1 { font-size: 2.2em; }
    .difficulty-options { grid-template-columns: 1fr 1fr; }
    .game-header h1 { font-size: 1.2em; }
    .game-stats { grid-template-columns: repeat(4, 1fr); gap: 5px; }
    .stat-value { font-size: 1.2em; }
    .tower-types { grid-template-columns: repeat(3, 1fr); }
    .cell { min-height: 32px; }
    .wave-announcement { font-size: 1.2em; padding: 15px 25px; }
    .modal-content { padding: 20px; width: 95%; }
    .powerup-btn { width: 48px; height: 48px; }
    .powerup-icon { font-size: 1.4em; }
    .tutorial-modal { width: 95%; }
}

@media (max-width: 480px) {
    .game-header { flex-direction: column; gap: 8px; }
    .game-stats { grid-template-columns: repeat(2, 1fr); }
    .tower-types { grid-template-columns: repeat(3, 1fr); gap: 4px; }
    .tower-icon { width: 25px; height: 25px; }
    .tower-name { font-size: 0.65em; }
    .cell { min-height: 28px; }
    .powerup-btn { width: 42px; height: 42px; }
    .wave-info { flex-direction: column; gap: 5px; }
}