/* UI Screens & Components */

/* Enhanced Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    overflow: hidden;
}

.loading-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a237e 0%, #3949ab 50%, #5e35b1 100%);
    z-index: 1;
}

/* Main Loading Area */
.loading-main {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

/* Fox Container */
.fox-container {
    margin-bottom: 1rem;
}

.loading-fox-canvas {
    width: 120px;
    height: 120px;
    filter: drop-shadow(0 4px 20px rgba(255, 107, 53, 0.5));
}

/* Game Title */
.game-title {
    margin-bottom: 1.5rem;
}

.title-main {
    font-size: 3rem;
    font-weight: bold;
    margin: 0 0 0.5rem 0;
    background: linear-gradient(45deg, #ff6b35, #ff8a50, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
    animation: titleGlow 3s ease-in-out infinite alternate;
}

.title-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-weight: 300;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Loading Progress */
.loading-progress {
    margin-bottom: 1.5rem;
    width: 100%;
    max-width: 300px;
}

.progress-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff6b35, #ff8a50, #ffd700);
    border-radius: 10px;
    width: 0%;
    animation: loadingProgress 3s ease-in-out forwards;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: progressShine 1.5s ease-in-out infinite;
}

.progress-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Loading Tips */
.loading-tips {
    margin-top: 1rem;
}

.tip-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    margin: 0;
    animation: tipFade 2s ease-in-out infinite;
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    pointer-events: none;
}

.floating-cloud {
    position: absolute;
    font-size: 2rem;
    opacity: 0.6;
    animation: floatCloud 20s linear infinite;
}

.cloud-1 {
    top: 20%;
    animation-delay: 0s;
}

.cloud-2 {
    top: 60%;
    animation-delay: -7s;
}

.cloud-3 {
    top: 40%;
    animation-delay: -14s;
}

.floating-star {
    position: absolute;
    font-size: 1.5rem;
    opacity: 0.8;
    animation: twinkle 3s ease-in-out infinite;
}

.star-1 {
    top: 15%;
    right: 20%;
    animation-delay: 0s;
}

.star-2 {
    top: 70%;
    left: 15%;
    animation-delay: -1s;
}

.star-3 {
    top: 30%;
    right: 30%;
    animation-delay: -2s;
}

/* Animations */
@keyframes titleGlow {
    0% { text-shadow: 0 2px 8px rgba(255, 107, 53, 0.3); }
    100% { text-shadow: 0 4px 16px rgba(255, 107, 53, 0.8), 0 0 20px rgba(255, 215, 0, 0.5); }
}

@keyframes loadingProgress {
    0% { width: 0%; }
    20% { width: 15%; }
    40% { width: 35%; }
    60% { width: 60%; }
    80% { width: 85%; }
    100% { width: 100%; }
}

@keyframes progressShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

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

@keyframes floatCloud {
    0% { transform: translateX(-100px); }
    100% { transform: translateX(calc(100vw + 100px)); }
}

@keyframes twinkle {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Responsive Design */
@media (orientation: portrait) {
    .title-main {
        font-size: 2.5rem;
    }
    
    .loading-fox-canvas {
        width: 100px;
        height: 100px;
    }
    
    .loading-main {
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: 2rem;
    }
    
    .title-subtitle {
        font-size: 1rem;
    }
    
    .loading-fox-canvas {
        width: 80px;
        height: 80px;
    }
    
    .floating-cloud {
        font-size: 1.5rem;
    }
    
    .floating-star {
        font-size: 1.2rem;
    }
}

/* Mobile Touch Active States */
.touch-active {
    transform: scale(0.95) !important;
    opacity: 0.8 !important;
    transition: all 0.1s ease !important;
}

.btn.touch-active {
    filter: brightness(1.2) !important;
}

/* UI Element Protection from Global Touch */
.ui-element,
.menu-screen,
.game-ui,
.pause-screen,
.game-over,
.screen,
button,
.btn,
input,
select,
textarea,
label,
a {
    pointer-events: all;
    position: relative;
    z-index: 100;
}

/* Game Canvas Area - Lower Z-Index for Global Touch */
.game-canvas {
    position: relative;
    z-index: 1;
}

/* UI Overlay */
.ui-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    pointer-events: none;
}

/* Screen Base Styles */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--overlay-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    pointer-events: all;
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

.screen.game-screen {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.screen.game-screen.active {
    pointer-events: none;
}

.screen.game-screen .game-hud,
.screen.game-screen .touch-controls {
    pointer-events: all;
}

/* Menu Screen */
.menu-screen {
    background: var(--background-gradient);
}

.menu-content {
    text-align: center;
    max-width: 90%;
    padding: var(--spacing-xl);
}

.game-logo {
    margin-bottom: var(--spacing-xl);
}

.fox-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    display: block;
    filter: drop-shadow(0 4px 12px rgba(255, 107, 53, 0.4));
}

.fox-icon.animated {
    animation: foxBounce 2s ease-in-out infinite;
}

.game-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.game-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-medium);
    font-size: var(--font-size-md);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    min-height: 56px;
    pointer-events: all;
    z-index: 1000;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:active::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-primary);
    box-shadow: var(--shadow-medium);
}

.btn-primary:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-light);
}

.btn-secondary {
    background: rgba(44, 62, 80, 0.8);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:active {
    transform: scale(0.98);
    background: rgba(44, 62, 80, 1);
}

.btn-accent {
    background: linear-gradient(135deg, var(--button-accent), #c0392b);
    color: var(--text-primary);
    box-shadow: var(--shadow-medium);
}

.btn-accent:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-light);
}

.btn-icon {
    font-size: var(--font-size-lg);
}

.btn-text {
    font-weight: 600;
}

/* Pulse Animation for Primary Button */
.btn.pulse {
    animation: buttonPulse 2s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% { 
        box-shadow: var(--shadow-medium);
        transform: scale(1);
    }
    50% { 
        box-shadow: var(--shadow-heavy);
        transform: scale(1.02);
    }
}

/* Best Score Display */
.best-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-medium);
    border: 2px solid rgba(255, 107, 53, 0.3);
}

/* Game Over Screen */
.game-over-content {
    text-align: center;
    max-width: 90%;
    padding: var(--spacing-xl);
}

.game-over-fox {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: sadFoxFloat 3s ease-in-out infinite;
}

.game-over-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    color: var(--button-accent);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.score-summary {
    background: rgba(0, 0, 0, 0.5);
    padding: var(--spacing-lg);
    border-radius: var(--radius-medium);
    margin-bottom: var(--spacing-xl);
    border: 2px solid rgba(255, 107, 53, 0.3);
}

.score-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.score-item:last-child {
    margin-bottom: 0;
}

.new-record {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--text-accent);
    animation: recordGlow 1s ease-in-out infinite alternate;
}

.new-record.hidden {
    display: none;
}

@keyframes recordGlow {
    from { text-shadow: 0 0 5px var(--text-accent); }
    to { text-shadow: 0 0 15px var(--text-accent), 0 0 25px var(--text-accent); }
}

.game-over-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Pause Screen */
.pause-content {
    text-align: center;
    max-width: 90%;
    padding: var(--spacing-xl);
}

.pause-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.pause-fox {
    font-size: 4rem;
    margin-bottom: var(--spacing-xl);
    animation: sleepFloat 2s ease-in-out infinite;
}

.pause-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Notification Toast */
.notification-toast {
    position: fixed;
    top: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: rgba(0, 0, 0, 0.9);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-medium);
    border: 2px solid var(--primary-color);
    z-index: 1000;
    transition: transform var(--transition-medium);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
}

.notification-toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-icon {
    font-size: var(--font-size-lg);
}

.toast-message {
    font-weight: 500;
}

/* Animations */
@keyframes foxBounce {
    0%, 100% { 
        transform: translateY(0) scale(1); 
    }
    50% { 
        transform: translateY(-15px) scale(1.05); 
    }
}

@keyframes sadFoxFloat {
    0%, 100% { 
        transform: translateY(0) rotate(-2deg); 
    }
    50% { 
        transform: translateY(-8px) rotate(2deg); 
    }
}

@keyframes sleepFloat {
    0%, 100% { 
        transform: translateY(0) scale(1); 
    }
    50% { 
        transform: translateY(-5px) scale(1.02); 
    }
}

/* Responsive Design */
@media screen and (max-width: 480px) {
    .menu-content,
    .game-over-content,
    .pause-content {
        padding: var(--spacing-md);
    }
    
    .game-title {
        font-size: var(--font-size-xl);
    }
    
    .fox-icon {
        font-size: 4rem;
    }
    
    .btn {
        min-height: 48px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media screen and (orientation: landscape) and (max-height: 500px) {
    .fox-icon {
        font-size: 3rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .game-title {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }
    
    .game-subtitle {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    .menu-buttons,
    .game-over-buttons,
    .pause-buttons {
        gap: var(--spacing-sm);
    }
    
    .btn {
        min-height: 40px;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .menu-content,
    .game-over-content,
    .pause-content {
        padding: var(--spacing-md);
        max-width: 95%;
    }
}

/* Safe Area Adjustments */
@supports (padding: max(0px)) {
    .notification-toast {
        top: max(var(--spacing-lg), env(safe-area-inset-top));
    }
    
    .menu-content,
    .game-over-content,
    .pause-content {
        padding-top: max(var(--spacing-xl), env(safe-area-inset-top));
        padding-bottom: max(var(--spacing-xl), env(safe-area-inset-bottom));
        padding-left: max(var(--spacing-xl), env(safe-area-inset-left));
        padding-right: max(var(--spacing-xl), env(safe-area-inset-right));
    }
}

/* Enhanced Mobile Touch Feedback */
.touch-active {
    transform: scale(0.95) !important;
    opacity: 0.8 !important;
    transition: all 0.1s ease !important;
}

.btn.touch-active {
    transform: scale(0.95) !important;
    filter: brightness(1.2) !important;
}

/* Prevent double-tap zoom on mobile buttons */
button, .btn {
    touch-action: manipulation;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Improved mobile button sizing */
@media (pointer: coarse) {
    .btn {
        min-height: 48px;
        min-width: 48px;
        padding: 12px 24px;
        font-size: 16px;
    }
}

/* Remove desktop controls completely on mobile */
@media (max-width: 1024px), (pointer: coarse), (hover: none) {
    .desktop-controls {
        display: none !important;
        visibility: hidden !important;
    }
}