/* ============================================
   SPACE INVADERS: ENHANCED EDITION
   Styling with Neon/Retro-Futuristic Theme
   ============================================ */

:root {
    /* Color Palette */
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --primary: #00ffff;
    --primary-dark: #00a8a8;
    --secondary: #ff00ff;
    --accent: #ffff00;
    --danger: #ff4444;
    --success: #44ff44;
    --text: #ffffff;
    --text-dim: #888899;

    /* Glow Effects */
    --glow-primary: 0 0 10px var(--primary), 0 0 20px var(--primary), 0 0 30px var(--primary);
    --glow-secondary: 0 0 10px var(--secondary), 0 0 20px var(--secondary);
    --glow-danger: 0 0 10px var(--danger), 0 0 20px var(--danger);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
}

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

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

/* Game Container */
#game-container {
    position: relative;
    width: 800px;
    height: 600px;
    background: var(--bg-dark);
    border: 2px solid var(--primary);
    box-shadow: var(--glow-primary), inset 0 0 50px rgba(0, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

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

/* Scanline Effect Overlay */
#game-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.1) 2px,
            rgba(0, 0, 0, 0.1) 4px);
    pointer-events: none;
    z-index: 10;
}

/* ============================================
   Menu Screens
   ============================================ */

.menu-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    justify-content: center;
    align-items: center;
    background: rgba(5, 5, 10, 0.98);
    z-index: 200;
}

.menu-screen.active {
    display: flex;
}

.menu-content {
    text-align: center;
    padding: var(--spacing-lg);
}

/* Game Title */
.game-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
    line-height: 1.1;
}

.title-space {
    display: block;
    color: var(--primary);
    text-shadow: var(--glow-primary);
    animation: flickerGlow 3s infinite;
}

.title-invaders {
    display: block;
    color: var(--secondary);
    text-shadow: var(--glow-secondary);
    font-size: 3rem;
}

.subtitle {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: var(--accent);
    letter-spacing: 0.5em;
    margin-bottom: var(--spacing-lg);
}

/* Menu Buttons */
.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.menu-btn {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    min-width: 250px;
}

.menu-btn:hover {
    background: var(--primary);
    color: var(--bg-dark);
    box-shadow: var(--glow-primary);
    transform: scale(1.05);
}

.menu-btn.primary {
    background: var(--primary);
    color: var(--bg-dark);
    font-weight: 700;
}

.menu-btn.primary:hover {
    background: var(--text);
    border-color: var(--text);
    box-shadow: 0 0 20px var(--text);
}

/* High Score Display */
.high-score-display {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: var(--accent);
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

#menu-highscore {
    color: var(--text);
}

/* Controls Screen */
.controls-list {
    margin: var(--spacing-md) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.control-item {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.control-item .key {
    font-family: 'Orbitron', sans-serif;
    background: var(--primary);
    color: var(--bg-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    min-width: 80px;
    border-radius: 4px;
    font-weight: 700;
}

.control-item .action {
    color: var(--text-dim);
    min-width: 120px;
    text-align: left;
}

/* High Scores List */
.highscores-list {
    margin: var(--spacing-md) 0;
    max-height: 300px;
    overflow-y: auto;
}

.highscore-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid rgba(0, 255, 255, 0.2);
}

.highscore-item .rank {
    color: var(--accent);
    font-weight: 700;
}

.highscore-item .score-value {
    color: var(--primary);
    font-family: 'Orbitron', sans-serif;
}

/* Game Over & Victory Screens */
.gameover-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    color: var(--danger);
    text-shadow: var(--glow-danger);
    margin-bottom: var(--spacing-md);
    animation: pulseGlow 1s infinite;
}

.victory-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    color: var(--success);
    text-shadow: 0 0 10px var(--success), 0 0 20px var(--success);
    margin-bottom: var(--spacing-xs);
    animation: victoryPulse 0.5s infinite alternate;
}

.victory-subtitle {
    color: var(--accent);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.final-score {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--text-dim);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.final-score span:last-child {
    font-size: 3rem;
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent);
}

.new-highscore {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: var(--spacing-md);
    animation: rainbowGlow 1s infinite;
}

.hidden {
    display: none !important;
}

/* Level Transition */
#level-transition .menu-content {
    animation: levelFadeIn 0.5s ease-out;
}

.level-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    color: var(--primary);
    text-shadow: var(--glow-primary);
}

.level-name {
    font-size: 1.5rem;
    color: var(--accent);
    margin-top: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.3em;
}

/* ============================================
   HUD (Heads-Up Display)
   ============================================ */

#hud {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-sm);
    pointer-events: none;
    z-index: 40;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
}

.hud-left,
.hud-center,
.hud-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.hud-center {
    align-items: center;
}

.hud-right {
    align-items: flex-end;
}

.hud-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 0.2em;
}

#score,
#current-level {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    color: var(--accent);
    text-shadow: 0 0 5px var(--accent);
}

#lives-icons {
    display: flex;
    gap: 4px;
}

.life-icon {
    width: 20px;
    height: 20px;
    background: var(--primary);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

#active-powerup {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    color: var(--success);
    text-transform: uppercase;
}

/* ============================================
   Boss Health Bar
   ============================================ */

#boss-health-container {
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    text-align: center;
    z-index: 40;
    animation: bossAppear 0.5s ease-out;
}

.boss-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    color: var(--danger);
    text-shadow: var(--glow-danger);
    margin-bottom: var(--spacing-xs);
    letter-spacing: 0.2em;
}

.boss-health-bar {
    position: relative;
    height: 20px;
    background: rgba(255, 68, 68, 0.2);
    border: 2px solid var(--danger);
    border-radius: 10px;
    overflow: hidden;
}

#boss-health-fill {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--danger), #ff8844);
    transition: width 0.3s ease;
    box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.3);
}

.boss-phase-markers {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.phase-marker {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--bg-dark);
}

.boss-phase {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    color: var(--accent);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Animations
   ============================================ */

@keyframes flickerGlow {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }

    52% {
        opacity: 1;
    }

    54% {
        opacity: 0.9;
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.02);
    }
}

@keyframes victoryPulse {
    from {
        transform: scale(1);
    }

    to {
        transform: scale(1.05);
    }
}

@keyframes rainbowGlow {
    0% {
        color: #ff0000;
        text-shadow: 0 0 10px #ff0000;
    }

    16% {
        color: #ff8800;
        text-shadow: 0 0 10px #ff8800;
    }

    33% {
        color: #ffff00;
        text-shadow: 0 0 10px #ffff00;
    }

    50% {
        color: #00ff00;
        text-shadow: 0 0 10px #00ff00;
    }

    66% {
        color: #00ffff;
        text-shadow: 0 0 10px #00ffff;
    }

    83% {
        color: #ff00ff;
        text-shadow: 0 0 10px #ff00ff;
    }

    100% {
        color: #ff0000;
        text-shadow: 0 0 10px #ff0000;
    }
}

@keyframes levelFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bossAppear {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 850px) {
    #game-container {
        width: 100vw;
        height: 75vw;
        max-height: 100vh;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .game-title {
        font-size: 2.5rem;
    }

    .title-invaders {
        font-size: 2rem;
    }

    .menu-btn {
        min-width: 200px;
        font-size: 1rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

@media (max-width: 500px) {
    .game-title {
        font-size: 2rem;
    }

    .title-invaders {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.7rem;
        letter-spacing: 0.3em;
    }

    #hud {
        padding: var(--spacing-xs);
    }

    #score,
    #current-level {
        font-size: 1rem;
    }

    #boss-health-container {
        width: 80%;
    }
}
/* ============================================
   Project Page Styling
   ============================================ */

.page-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.project-nav {
    width: 100%;
    margin-bottom: 2rem;
}

.back-link {
    color: var(--primary);
    text-decoration: none;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--text);
    text-shadow: var(--glow-primary);
    transform: translateX(-5px);
}

.project-info {
    margin-top: 3rem;
    color: var(--text-dim);
    line-height: 1.6;
    background: rgba(10, 10, 15, 0.8);
    padding: 2rem;
    border: 1px solid rgba(0, 255, 255, 0.1);
    border-radius: 8px;
    width: 100%;
    max-width: 800px;
}

.project-info h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.project-info p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.feature-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.feature-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: '►';
    color: var(--accent);
    position: absolute;
    left: 0;
    font-size: 0.8rem;
    top: 0.2rem;
}

.feature-list strong {
    color: var(--text);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
}

@media (max-width: 850px) {
    .page-wrapper {
        padding: 1rem;
    }
    
    .project-info {
        padding: 1.5rem;
    }
}