/* ========================================
   Maneuver Attack — Home Page
   ======================================== */

.home-container {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

/* ── Animated Stars Background ── */
.stars-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-bg);
    pointer-events: none;
}

/* ── Scanline overlay ── */
.home-container::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: var(--z-overlay);
}

/* ── Main Content ── */
.home-content {
    position: relative;
    z-index: var(--z-hud);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
    animation: fadeInScale 1s var(--ease-out);
}

/* ── Title ── */
.game-title {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.game-title .title-sub {
    font-family: var(--font-title);
    font-size: clamp(0.7rem, 2vw, 1rem);
    color: var(--accent-primary);
    letter-spacing: 0.5em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    animation: fadeInDown 0.8s var(--ease-out) 0.2s both;
}

.game-title .title-main {
    font-family: var(--font-pixel);
    font-size: clamp(1.5rem, 5vw, 3rem);
    color: var(--text-primary);
    text-shadow: var(--glow-text);
    animation: textGlow 3s ease-in-out infinite, fadeInUp 1s var(--ease-out) 0.4s both;
    line-height: 1.4;
}

.game-title .title-main span {
    color: var(--accent-primary);
}

/* ── Flying Plane Decoration ── */
.flying-plane {
    position: fixed;
    width: 48px;
    height: 48px;
    image-rendering: pixelated;
    animation: flyAcross 12s linear infinite;
    z-index: var(--z-arena-ambient);
    opacity: 0.6;
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.6));
}

.flying-plane:nth-child(2) {
    top: 30%;
    animation-delay: -4s;
    animation-duration: 15s;
    width: 32px;
    height: 32px;
    opacity: 0.3;
}

.flying-plane:nth-child(3) {
    top: 70%;
    animation-delay: -8s;
    animation-duration: 18s;
    width: 24px;
    height: 24px;
    opacity: 0.2;
}

/* ── Buttons ── */
.home-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    animation: fadeInUp 1s var(--ease-out) 0.6s both;
}

.btn-primary {
    position: relative;
    padding: var(--space-md) var(--space-3xl);
    font-family: var(--font-pixel);
    font-size: 0.85rem;
    color: var(--bg-primary);
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s var(--ease-out);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: var(--glow-cyan);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-secondary {
    padding: var(--space-sm) var(--space-xl);
    font-family: var(--font-pixel);
    font-size: 0.6rem;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    letter-spacing: 1px;
}

.btn-secondary:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.15);
}

/* ── Version Badge ── */
.version-badge {
    position: fixed;
    bottom: var(--space-md);
    right: var(--space-md);
    font-family: var(--font-pixel);
    font-size: 0.5rem;
    color: var(--text-muted);
    z-index: var(--z-hud);
}

/* ── How to Play Modal ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--ease-out);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.4s var(--ease-bounce);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-content h2 {
    font-family: var(--font-pixel);
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.control-section h3 {
    font-family: var(--font-pixel);
    font-size: 0.65rem;
    color: var(--accent-secondary);
    margin-bottom: var(--space-md);
}

.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-xs) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.control-row .action {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.control-row .key {
    font-family: var(--font-pixel);
    font-size: 0.55rem;
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.modal-close {
    display: block;
    margin: var(--space-lg) auto 0;
    padding: var(--space-sm) var(--space-xl);
    font-family: var(--font-pixel);
    font-size: 0.55rem;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
}

.modal-close:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* ── Responsive ── */
@media (max-width: 640px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
}