/* --- Preloader Styles --- */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--dark-bg);
    background-image: radial-gradient(circle at 50% 50%, var(--medium-bg) 0%, var(--dark-bg) 70%);
    z-index: 10001; /* Higher than header */
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    opacity: 1;
    visibility: visible;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.preloader-logo {
    width: 80px;
    height: auto;
    position: relative;
    z-index: 3;
    animation: logo-glow 3s ease-in-out infinite, logo-breathe 4s ease-in-out infinite;
}

/* Rotating gear effect */
.preloader-gear {
    position: absolute;
    width: 160px;
    height: 160px;
    stroke: rgba(0, 174, 255, 0.2);
    z-index: 2;
    animation: spin 12s linear infinite;
    opacity: 0.8;
}


/* Circular light effects */
.light-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 174, 255, 0.3);
    z-index: 1;
    animation: pulse 3s ease-out infinite;
}

.light-circle.one {
    width: 120px;
    height: 120px;
}

.light-circle.two {
    width: 120px;
    height: 120px;
    animation-delay: 0.75s;
}

.light-circle.three {
    width: 120px;
    height: 120px;
    animation-delay: 1.5s;
}

/* Progress bar and counter */
.progress-container {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 20px;
    display: flex;
}

.progress-bar-bg {
    width: 100%;
    height: 2px;
    background-color: var(--border-color);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-line {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: 2px;
    animation: fill-progress 3s linear forwards;
}

.progress-counter {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--medium-text);
    font-variant-numeric: tabular-nums;
}

/* Keyframe Animations */
@keyframes logo-glow {
    0%, 100% { filter: drop-shadow(0 0 5px rgba(0, 174, 255, 0.3)); }
    50% { filter: drop-shadow(0 0 15px rgba(0, 174, 255, 0.7)); }
}

@keyframes logo-breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0% { transform: scale(0.8); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: scale(1.8); opacity: 0; }
}

@keyframes fill-progress {
    from { width: 0%; }
    to { width: 100%; }
}