/* --- SOLID COLOR BACKGROUNDS --- */
.bg-fixed {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -1;
}

.bg-image {
    background-image: var(--field-image); 
}


.bg-color-primary {
    background-color: #0d6efd;
}

.bg-color-secondary {
    background-color: #6c757d;
}

.bg-color-light {
    background-color: #f8f9fa;
}

.bg-color-dark {
    background-color: #212529;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.bg-gradient-sunset {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.bg-gradient-ocean {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}


/* --- PATTERN BACKGROUNDS --- */
.bg-pattern-dots {
    background-color: #f8f9fa;
    background-image: radial-gradient(#dee2e6 1px, transparent 1px);
    background-size: 20px 20px;
}

.bg-pattern-grid {
    background-color: #ffffff;
    background-image: 
    linear-gradient(#e9ecef 1px, transparent 1px),
    linear-gradient(90deg, #e9ecef 1px, transparent 1px);
    background-size: 30px 30px;
}

.bg-pattern-stripes {
    background-color: #f8f9fa;
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        #e9ecef 10px,
        #e9ecef 20px
    );
}

.bg-pattern-zigzag {
    background-color: #ffffff;
    background-image: 
    linear-gradient(135deg, #e9ecef 25%, transparent 25%),
    linear-gradient(225deg, #e9ecef 25%, transparent 25%),
    linear-gradient(45deg, #e9ecef 25%, transparent 25%),
    linear-gradient(315deg, #e9ecef 25%, transparent 25%);
    background-size: 40px 40px;
    background-position: 0 0, 20px 0, 20px -20px, 0px 20px;
}


/* --- IMAGE BACKGROUNDS --- */
.bg-image {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.bg-image-parallax {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: scroll;
}

.bg-image-overlay::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.bg-image-overlay-light::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.7);
    z-index: -1;
}


/* --- CONTENT WRAPPER FOR SCROLLING --- */
.content-scroll-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    background-color: transparent;
}

.content-card {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
}

.content-card-dark {
    background-color: rgba(33, 37, 41, 0.95);
    color: #ffffff;
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
}


/* --- UTILITY CLASSES --- */
.bg-blur {
    backdrop-filter: blur(10px);
}

.bg-opacity-10 {
    opacity: 0.1;
}

.bg-opacity-50 {
    opacity: 0.5;
}

.bg-opacity-75 {
    opacity: 0.75;
}