/* ==========================================
   CD-SYSTEM BASE - CUSTOM STYLES
   ========================================== */

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 4px 15px rgba(0,136,204,0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,136,204,0.4);
    color: #fff;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Header Semi-transparent */
.header-semi-transparent {
    background: rgba(255,255,255,0.95) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

/* Loading Overlay Improvements */
.loading-overlay {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.custom-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.logo-loader {
    animation: scaleBounce 1.5s infinite ease-in-out;
    margin-bottom: 2rem;
}

.loading-text {
    color: #fff;
    font-size: 1.2em;
    font-weight: 500;
    margin-top: 1rem;
}

@keyframes scaleBounce {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

/* Mobile Navigation Improvements */
@media (max-width: 991px) {
    .mobile-nav-active {
        overflow: hidden;
    }

    .mobile-nav-active #header .header-nav-main nav {
        transform: translateX(0);
    }

    #header .header-nav-main nav {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
}

/* Newsletter Form Improvements */
.newsletter-form .input-group {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.newsletter-form .form-control {
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1.1em;
}

.newsletter-form .btn {
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Alert Improvements */
.alert {
    border: none;
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background: linear-gradient(135deg, #28A745 0%, #20C997 100%);
    color: #fff;
}

.alert-danger {
    background: linear-gradient(135deg, #DC3545 0%, #FD7E14 100%);
    color: #fff;
}

/* Card Hover Effects */
.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* Button Improvements */
.btn {
    position: relative;
    overflow: hidden;
}

.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;
}

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

/* Progress Bar Improvements */
.progress {
    background: rgba(255,255,255,0.2);
    border-radius: 10px;
    overflow: hidden;
    height: 10px;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

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

/* Social Icons Improvements */
.social-icons a {
    position: relative;
    overflow: hidden;
}

.social-icons a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary);
    transform: scale(0);
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.social-icons a:hover::before {
    transform: scale(1);
}

.social-icons a i {
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.social-icons a:hover i {
    color: #fff;
}

/* Typography Improvements */
.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Section Improvements */
.section-with-bg {
    position: relative;
    overflow: hidden;
}

.section-with-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

/* Animation Classes */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.fade-in-down {
    animation: fadeInDown 0.8s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Improvements */
@media (max-width: 767px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .newsletter-form .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1em;
    }
}

/* Print Styles */
@media print {
    .back-to-top,
    .style-switcher-open-loader,
    .loading-overlay {
        display: none !important;
    }
}