/* ==========================================
   URBAN VECTOR BLUEPRINTS (INDEX.HTML)
   ========================================== */
/* --- Fixed Parallax Background --- */
#parallax-backdrop {
    position: fixed;
    top: -15vh;
    left: -10vw;
    width: 120vw;
    height: 130vh;
    z-index: 0;
    background-color: #05080f;
    background-image: url('assets/356582.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    opacity: 0.4; /* Slightly brighter background */
    pointer-events: none;
    will-change: transform;
}
/* Force the section to break out of all parent padding/containers to hit the true screen edges */
.vector-blueprint-section {
    width: 100vw !important;
    max-width: 100vw !important;
    margin-left: calc(-50vw + 50%) !important;
    margin-bottom: 120px !important;
}

/* Override the fluent-glass-panel to make it sharp and flush */
.vector-panel {
    padding: 0 !important;
    border-radius: 0 !important; /* Non-rounded */
    border-left: none;
    border-right: none;
    pointer-events: none; /* Disables all mouse interaction (no hover, no drag) */
    position: relative;
    overflow: hidden;
    background: transparent;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* The grid that holds the images */
.vector-strip {
    display: flex;
    width: 100%;
    gap: 1px; /* Creates ultra-thin sharp grid lines between images */
    background: rgba(255, 255, 255, 0.1); 
}

/* Image styling & Vector Filtering */
.vector-strip img {
    flex: 1;
    width: 25%;
    height: 350px;
    object-fit: cover;
    /* This filter chain turns standard structural photos into dark-mode, cyan-tinted blueprint vectors */
    filter: grayscale(100%) contrast(1.4) brightness(0.6) sepia(1) hue-rotate(150deg) saturate(3);
    opacity: 0.85;
}

/* Fluent edge blending so the harsh edges melt into the dark background */
.vector-fade-edges {
    position: absolute;
    inset: 0;
    /* Fades from solid background color on the edges to transparent in the center */
    background: linear-gradient(90deg, #05080f 0%, transparent 15%, transparent 85%, #05080f 100%);
    z-index: 2;
}

/* Responsive constraints for smaller screens */
@media (max-width: 1000px) {
    .vector-strip img {
        height: 200px;
    }
    .vector-fade-edges {
        background: linear-gradient(90deg, #05080f 0%, transparent 5%, transparent 95%, #05080f 100%);
    }
}

/* --- High-Contrast Glass Fix for Visibility --- */
.fluent-glass-panel {
    background: rgba(13, 22, 38, 0.75) !important; /* Increased opacity from 0.5 to 0.75 */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15) !important; /* Sharper border */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* --- Fluent Drop Top-Left Scroll Indicator --- */
.hero-top-left-scroll {
    position: absolute;
    top: 110px; 
    left: 40px;
    z-index: 15;
}

.scroll-pill {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 10px 22px;
    border-radius: 50px;
    background: rgba(13, 22, 38, 0.65) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    backdrop-filter: blur(16px);
}

.scroll-pill span {
    font-size: 0.75rem;
    color: #f8fafc;
    letter-spacing: 2px;
    font-weight: 500;
}

/* Fluent Drop Animation Node */
.scroll-drop-node {
    position: relative;
    width: 14px;
    height: 24px;
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 3px;
}

.scroll-drop-dot {
    width: 3px;
    height: 6px;
    background: #10b981;
    border-radius: 2px;
    animation: fluentDropAnim 2s cubic-bezier(0.15, 0.41, 0.69, 0.94) infinite;
}

@keyframes fluentDropAnim {
    0% { transform: translateY(0); opacity: 1; }
    70% { transform: translateY(10px); opacity: 0; }
    100% { transform: translateY(0); opacity: 0; }
}

@media (max-width: 768px) {
    .hero-top-left-scroll {
        top: 95px;
        left: 20px;
    }
}