/* Loading Screen Styles (loading.css) */

/* Loading Screen Container */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    overflow: hidden;
}

.loading-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(207, 53, 64, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(46, 82, 143, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(207, 53, 64, 0.05) 0%, transparent 50%);
    animation: backgroundFloat 20s ease-in-out infinite;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Loading Content */
.loading-content {
    text-align: center;
    color: var(--white);
    max-width: 400px;
    padding: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

/* Loading Logo */
.loading-logo {
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    animation: logoFadeIn 1s ease 0.5s forwards;
}

.loading-logo img {
    height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
    animation: logoPulse 2s infinite ease-in-out;
}

/* Loading Text */
.loading-text {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    font-weight: 300;
    opacity: 0;
    animation: textSlideIn 0.8s ease 1s forwards;
    min-height: 2em;
}

.loading-text span {
    display: block;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

/* Progress Bar Container */
.loading-progress {
    width: 300px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
    opacity: 0;
    animation: progressFadeIn 0.6s ease 1.5s forwards;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Progress Bar */
.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--highlight-color), #ff4757, var(--highlight-color));
    background-size: 200% 100%;
    border-radius: 3px;
    width: 0%;
    transition: width 0.4s ease;
    position: relative;
    overflow: hidden;
    animation: progressGradient 2s linear infinite;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.6),
        transparent
    );
    animation: progressShine 2s infinite;
}

/* Loading Dots */
.loading-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-lg);
    opacity: 0;
    animation: dotsAppear 0.5s ease 2s forwards;
}

.loading-dot {
    width: 8px;
    height: 8px;
    background: var(--white);
    border-radius: 50%;
    animation: dotBounce 1.5s infinite ease-in-out;
}

.loading-dot:nth-child(1) { animation-delay: 0s; }
.loading-dot:nth-child(2) { animation-delay: 0.2s; }
.loading-dot:nth-child(3) { animation-delay: 0.4s; }

/* Keyframe Animations */
@keyframes backgroundFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

@keyframes logoFadeIn {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes logoPulse {
    0%, 100% { 
        transform: scale(1);
        filter: brightness(0) invert(1) drop-shadow(0 0 20px rgba(255, 255, 255, 0.3));
    }
    50% { 
        transform: scale(1.1);
        filter: brightness(0) invert(1) drop-shadow(0 0 30px rgba(255, 255, 255, 0.6));
    }
}

@keyframes textSlideIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes progressFadeIn {
    0% {
        opacity: 0;
        transform: scaleX(0);
    }
    100% {
        opacity: 1;
        transform: scaleX(1);
    }
}

@keyframes progressGradient {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

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

@keyframes dotsAppear {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes dotBounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.6;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .loading-content {
        padding: var(--spacing-lg);
    }
    
    .loading-logo img {
        height: 60px;
    }
    
    .loading-text {
        font-size: var(--font-size-lg);
    }
    
    .loading-progress {
        width: 250px;
    }
}

@media (max-width: 480px) {
    .loading-content {
        padding: var(--spacing-md);
    }
    
    .loading-logo img {
        height: 50px;
    }
    
    .loading-text {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    .loading-progress {
        width: 200px;
        height: 4px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .loading-screen::before,
    .loading-logo img,
    .loading-dots,
    .loading-dot,
    .progress-bar {
        animation: none !important;
    }
    
    .loading-logo,
    .loading-text,
    .loading-progress,
    .loading-dots {
        opacity: 1 !important;
        transform: none !important;
    }
}