/* Modern Game HUD Styling - Glassmorphism & High-End Aesthetics */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Plus+Jakarta+Sans:wght@400;500;700&display=swap');

:root {
    --bg-glass: rgba(18, 22, 33, 0.65);
    --bg-glass-active: rgba(18, 22, 33, 0.85);
    --border-glass: rgba(255, 255, 255, 0.12);
    --border-active: rgba(255, 255, 255, 0.35);
    --color-text: #f3f4f6;
    --color-text-muted: #9ca3af;
    --color-primary: #3a86ff;
    --color-primary-hover: #00b4d8;
    --font-main: 'Plus Jakarta Sans', sans-serif;
    --font-display: 'Outfit', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: var(--font-main);
    background-color: #0b0d19;
    color: var(--color-text);
    user-select: none;
    -webkit-user-select: none;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    display: block;
}

.mobile-instructions {
    display: none;
}

/* Play Screen Overlay */
#play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle, rgba(11, 13, 25, 0.8) 0%, rgba(5, 6, 12, 0.95) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: opacity 0.3s ease, display 0.3s ease;
}

#overlay-container {
    text-align: center;
    max-width: 600px;
    padding: 40px;
    border-radius: 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

#play-overlay h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 800;
    margin: 0 0 10px 0;
    background: linear-gradient(135deg, #ff007f, #3a86ff, #00f5d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 2px;
}

#play-overlay p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin: 0 0 30px 0;
}

#play-button {
    font-family: var(--font-main);
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-primary) 0%, #8338ec 100%);
    border: none;
    padding: 16px 40px;
    border-radius: 14px;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(58, 134, 255, 0.35);
    transition: all 0.2s ease;
}

#play-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(58, 134, 255, 0.5);
    background: linear-gradient(135deg, var(--color-primary-hover) 0%, #8338ec 100%);
}

#play-button:active {
    transform: translateY(1px);
}

/* Control Instructions UI */
.instructions {
    margin-top: 30px;
    text-align: left;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.instructions-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.instruction-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--color-text-muted);
}

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

.key-tag {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    padding: 2px 8px;
    font-size: 0.8rem;
    font-weight: 700;
    color: #ffffff;
}

/* Reticle / Crosshair */
#crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    pointer-events: none;
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
}

#crosshair::before, #crosshair::after {
    content: '';
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 3px rgba(0,0,0,0.5);
}

#crosshair::before {
    width: 14px;
    height: 2px;
}

#crosshair::after {
    width: 2px;
    height: 14px;
}

/* HUD Overlay HUD panels */
.hud-panel {
    position: absolute;
    z-index: 10;
    pointer-events: auto;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Controls Guide (Left side) */
#guide-panel {
    top: 20px;
    left: 20px;
    width: 220px;
}

#guide-panel h3 {
    margin: 0 0 12px 0;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--color-primary);
}

/* Settings & Save Actions (Right side) */
#actions-panel {
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 180px;
}

.action-btn {
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.action-btn:hover {
    background: var(--color-primary);
    border-color: transparent;
    transform: translateX(-2px);
    box-shadow: 0 4px 12px rgba(58, 134, 255, 0.2);
}

.action-btn.danger:hover {
    background: #e63946;
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.2);
}

/* Inventory Hotbar (Bottom Center) */
#hotbar-container {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    background: rgba(10, 12, 22, 0.7);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 8px;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    z-index: 10;
}

.hotbar-slot {
    width: 68px;
    height: 68px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

.hotbar-slot:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.hotbar-slot.active {
    background: rgba(58, 134, 255, 0.15);
    border-color: var(--color-primary);
    box-shadow: 0 0 15px rgba(58, 134, 255, 0.4);
    transform: translateY(-6px);
}

.block-preview {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    margin-bottom: 6px;
    box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.2), 0 4px 8px rgba(0, 0, 0, 0.25);
}

/* Voxel Specific Colors */
.preview-grass { background-color: #55a630; }
.preview-dirt { background-color: #8c5b36; }
.preview-stone { background-color: #7c7c7c; }
.preview-wood { background-color: #9c6644; }
.preview-leaf { background-color: #2d6a4f; }
.preview-brick { background-color: #c35136; }
.preview-emerald { background-color: #00f5d4; }
.preview-diamond { background-color: #70d6ff; }
.preview-ender { background-color: #3c096c; }

.block-name {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-text-muted);
}

.hotbar-slot.active .block-name {
    color: #ffffff;
}

.slot-num {
    position: absolute;
    top: 4px;
    left: 6px;
    font-size: 0.65rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.3);
}

.hotbar-slot.active .slot-num {
    color: var(--color-primary);
}

/* Toast Notifications */
#toast-msg {
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.85);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

#toast-msg.show {
    top: 24px;
}

#toast-msg::before {
    content: '✦';
    color: #00f5d4;
    font-weight: 800;
}

/* Mobile Joystick & Touch Controls */
/* Landscape Orientation Warning */
#orientation-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #0b0d19;
    color: #ffffff;
    z-index: 99999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 24px;
    box-sizing: border-box;
}

.warning-content {
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.warning-content h2 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin: 0;
    background: linear-gradient(135deg, #ff007f, #3a86ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.warning-content p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.5;
    margin: 0;
}

.rotate-device-icon {
    color: var(--color-primary);
    animation: rotatePhone 2.5s ease-in-out infinite;
}

@keyframes rotatePhone {
    0%, 10% {
        transform: rotate(0deg);
    }
    40%, 60% {
        transform: rotate(-90deg);
    }
    90%, 100% {
        transform: rotate(0deg);
    }
}

/* Mobile Joystick & Touch Controls */
#mobile-joystick-container {
    display: none;
    position: absolute;
    bottom: 30px;
    left: 30px;
    width: 120px;
    height: 120px;
    z-index: 100;
    pointer-events: auto;
}

#mobile-joystick-base {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

#mobile-joystick-handle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    position: absolute;
    transition: transform 0.05s ease;
}

/* Ergonomic Triangular Mobile Action Gamepad */
#mobile-actions-container {
    display: none;
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 180px;
    height: 180px;
    z-index: 100;
    pointer-events: none; /* let touches pass through layout gaps */
}

.mobile-action-btn {
    pointer-events: auto; /* restore touches on the buttons */
    position: absolute;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: white;
    font-size: 1.6rem;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    transition: background-color 0.1s, transform 0.1s, border-color 0.1s;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

/* Active states (both selector and CSS active fallback) */
.mobile-action-btn:active,
.mobile-action-btn.active {
    transform: scale(0.9) !important;
    background: var(--color-primary) !important;
    border-color: rgba(255, 255, 255, 0.4) !important;
    box-shadow: 0 2px 8px rgba(58, 134, 255, 0.5) !important;
}

/* Absolute gamepad coordinates for ergonomics */
#mobile-btn-jump {
    bottom: 10px;
    right: 10px;
    width: 76px;
    height: 76px;
    font-size: 1.7rem;
    background: rgba(255, 255, 255, 0.14);
    border: 2px solid rgba(255, 255, 255, 0.25);
}

#mobile-btn-build {
    bottom: 96px;
    right: 10px;
    font-size: 1.5rem;
}

#mobile-btn-dig {
    bottom: 10px;
    right: 96px;
    font-size: 1.5rem;
}

/* Show mobile controls when is-mobile class is active on body */
body.is-mobile #mobile-joystick-container,
body.is-mobile #mobile-actions-container {
    display: block;
}

/* Hide desktop panels or adjust styling for small screens */
@media (max-width: 950px) {
    #guide-panel {
        display: none !important;
    }
    
    #actions-panel {
        top: 15px !important;
        bottom: auto !important;
        right: 15px !important;
        width: auto !important;
        display: flex !important;
        flex-direction: row !important;
        padding: 6px !important;
        gap: 6px !important;
        border-radius: 12px !important;
        backdrop-filter: blur(12px) !important;
        -webkit-backdrop-filter: blur(12px) !important;
    }
    
    .action-btn {
        padding: 8px !important;
        width: 38px !important;
        height: 38px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        border-radius: 8px !important;
    }

    .action-btn span:first-child {
        display: none !important; /* Hide labels, icons only */
    }

    #hotbar-container {
        width: 90%;
        max-width: 420px;
        bottom: 15px;
        gap: 4px;
        padding: 4px;
        border-radius: 12px;
    }

    .hotbar-slot {
        width: 48px;
        height: 48px;
        border-radius: 8px;
    }

    .block-preview {
        width: 20px;
        height: 20px;
        margin-bottom: 2px;
    }

    .block-name {
        font-size: 0.55rem;
    }

    .slot-num {
        display: none;
    }

    /* Start Screen Overlay Mobile Responsiveness */
    #play-overlay h1 {
        font-size: 2.2rem !important;
        margin-bottom: 5px !important;
    }
    
    #play-overlay p {
        font-size: 0.9rem !important;
        margin-bottom: 15px !important;
    }
    
    #overlay-container {
        max-width: 92% !important;
        width: 420px !important;
        padding: 20px !important;
        border-radius: 18px !important;
        max-height: 92vh !important;
        overflow-y: auto !important;
    }
    
    #play-button {
        padding: 12px 28px !important;
        font-size: 1rem !important;
        border-radius: 10px !important;
    }

    #play-overlay .instructions {
        display: none !important; /* Hide bulky keyboard instructions on mobile */
    }

    .mobile-instructions {
        display: flex !important;
        flex-direction: column;
        margin-top: 15px;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 12px;
        padding: 12px 16px;
        border: 1px solid rgba(255, 255, 255, 0.05);
        text-align: left;
    }
    
    .instruction-row-mobile {
        display: flex;
        justify-content: space-between;
        font-size: 0.8rem;
        margin-bottom: 6px;
        color: var(--color-text-muted);
        align-items: center;
    }
    
    .instruction-row-mobile:last-child {
        margin-bottom: 0;
    }
    
    .key-tag-mobile {
        background: rgba(58, 134, 255, 0.15);
        border: 1px solid rgba(58, 134, 255, 0.3);
        border-radius: 6px;
        padding: 2px 8px;
        font-size: 0.75rem;
        font-weight: 600;
        color: #ffffff;
    }
}

/* Specific Height Media Query for Mobile Landscape viewport space */
@media (max-height: 500px) {
    #overlay-container {
        padding: 12px 20px !important;
        border-radius: 12px !important;
        max-height: 95vh !important;
    }
    #play-overlay h1 {
        font-size: 1.8rem !important;
        margin-bottom: 2px !important;
    }
    #play-overlay p {
        font-size: 0.8rem !important;
        margin-bottom: 10px !important;
    }
    #play-button {
        padding: 10px 24px !important;
        font-size: 0.9rem !important;
    }
    .mobile-instructions {
        margin-top: 8px !important;
        padding: 6px 12px !important;
    }
    .instruction-row-mobile {
        margin-bottom: 2px !important;
        font-size: 0.75rem !important;
    }
}

/* Orientation warning display is controlled dynamically in JS */