/**
 * VBK Architecture Lightbox Styles
 * Professional, responsive lightbox design
 * Design System: Oswald (headings), Didact Gothic (body)
 * Color Palette: Dark charcoal, Medium gray, White, Teal accent
 */

/* Import Google Fonts */
@import url('fonts.googleapis.com');

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500&family=Didact+Gothic&display=swap');


/* ============================================================================
   COLOR VARIABLES
   ============================================================================ */
:root {
    --vbk-teal: #52878C;
    --vbk-teal-bright: #69ACB2;
    --vbk-charcoal: #272727;
    --vbk-overlay: rgba(39, 39, 39, 0.96);
}


/* ============================================================================
   LIGHTBOX CONTAINER & OVERLAY
   ============================================================================ */

.vbk-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.vbk-lightbox-active {
    display: block;
}

.vbk-lightbox-visible {
    opacity: 1;
}

.vbk-lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(39, 39, 39, 0.95);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.vbk-lightbox-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

/* ============================================================================
   CONTENT LAYOUT
   ============================================================================ */

.vbk-lightbox-content {
    position: relative;
    width: 100%;
    max-width: 1400px;
    height: 90vh;
    max-height: 900px;
    display: flex;
    flex-direction: row;
    gap: 20px;
    z-index: 10000;
}

/* ============================================================================
   IMAGE WRAPPER & IMAGE
   ============================================================================ */

.vbk-lightbox-image-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(82, 135, 140, 0.3);
    border-radius: 0px;
    overflow: hidden;
}

.vbk-lightbox-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    border-radius: 0px;
}

/* ============================================================================
   LOADER / SPINNER
   ============================================================================ */

.vbk-lightbox-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
}

.vbk-lightbox-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(82, 135, 140, 0.2);
    border-top-color: var(--vbk-teal);
    border-radius: 50%;
    animation: vbk-spin 0.8s linear infinite;
}

@keyframes vbk-spin {
    to { transform: rotate(360deg); }
}

/* ============================================================================
   CAPTION AREA
   ============================================================================ */

.vbk-lightbox-caption-wrapper {
    width: 400px;
    max-width: 35%;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.vbk-lightbox-caption {
    flex: 1;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 0px;
    border-left: 2px solid var(--vbk-teal); /* Structural accent line */
    padding: 25px;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    
    /* Custom scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: var(--vbk-teal) rgba(0, 0, 0, 0.2);
}

/* Webkit scrollbar styling */
.vbk-lightbox-caption::-webkit-scrollbar {
    width: 6px;
}

.vbk-lightbox-caption::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 0px;
}

.vbk-lightbox-caption::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 0px;
}

.vbk-lightbox-caption::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* ============================================================================
   CAPTION TEXT STYLING
   ============================================================================ */

.vbk-lightbox-caption-content {
    color: #ffffff;
    font-family: 'Didact Gothic', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    letter-spacing: 0.3px;
}

.vbk-lightbox-caption-content p {
    margin: 0 0 12px 0;
}

.vbk-lightbox-caption-content p:last-child {
    margin-bottom: 0;
}

.vbk-lightbox-caption-heading {
    font-size: 15px;
    margin-bottom: 8px !important;
}

.vbk-lightbox-caption-heading strong {
    color: var(--vbk-teal);
    font-weight: 500;
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 13px;
}

/* Caption List Styling */
.vbk-caption-list {
    margin: 8px 0 15px 0;
    padding-left: 20px;
    list-style: none;
}

.vbk-caption-list li {
    position: relative;
    margin-bottom: 8px;
    padding-left: 12px;
    line-height: 1.6;
}

.vbk-caption-list li:before {
    content: "−";
    position: absolute;
    left: -8px;
    color: var(--vbk-teal);
    font-weight: bold;
}

/* ============================================================================
   COUNTER
   ============================================================================ */

.vbk-lightbox-counter {
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 0px;
    border-bottom: 2px solid var(--vbk-teal);
    padding: 12px 20px;
    text-align: center;
    color: #ffffff;
    font-family: 'Oswald', sans-serif;
    font-size: 16px;
    letter-spacing: 2px;
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* ============================================================================
   NAVIGATION BUTTONS
   ============================================================================ */

.vbk-lightbox-close,
.vbk-lightbox-prev,
.vbk-lightbox-next {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.7);
    border: 1px solid var(--vbk-teal);
    color: #ffffff;
    cursor: pointer;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border-radius: 0px;
    font-family: 'Didact Gothic', sans-serif;
}



.vbk-lightbox-close:hover,
.vbk-lightbox-prev:hover:not(:disabled),
.vbk-lightbox-next:hover:not(:disabled) {
    background-color: var(--vbk-teal);
    border-color: var(--vbk-teal-bright);
    transform: scale(1.05);
}

.vbk-lightbox-close:active,
.vbk-lightbox-prev:active,
.vbk-lightbox-next:active {
    transform: scale(0.95);
}

/* Close Button */
.vbk-lightbox-close {
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    font-size: 36px;
    line-height: 1;
    padding: 0;
}

/* Previous Button */
.vbk-lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    font-size: 48px;
    line-height: 1;
    padding: 0;
}

.vbk-lightbox-prev:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.05);
}

/* Next Button */
.vbk-lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    font-size: 48px;
    line-height: 1;
    padding: 0;
}

.vbk-lightbox-next:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.05);
}

/* Disabled state */
.vbk-lightbox-prev:disabled,
.vbk-lightbox-next:disabled {
    cursor: not-allowed;
    opacity: 0.3;
}

/* ============================================================================
   RESPONSIVE DESIGN - TABLET (768px - 1024px)
   ============================================================================ */

@media screen and (max-width: 1024px) {
    .vbk-lightbox-content {
        max-width: 95%;
        gap: 15px;
    }

    .vbk-lightbox-caption-wrapper {
        width: 320px;
        min-width: 280px;
    }

    .vbk-lightbox-caption {
        padding: 20px;
    }

    .vbk-lightbox-caption-content {
        font-size: 14px;
    }
}

/* ============================================================================
   RESPONSIVE DESIGN - MOBILE LANDSCAPE (481px - 767px)
   ============================================================================ */

@media screen and (max-width: 767px) and (orientation: landscape) {
    .vbk-lightbox-container {
        padding: 10px;
    }

    .vbk-lightbox-content {
        height: 95vh;
        flex-direction: row;
        gap: 10px;
    }

    .vbk-lightbox-caption-wrapper {
        width: 280px;
        min-width: 250px;
        max-width: 40%;
    }

    .vbk-lightbox-caption {
        padding: 15px;
    }

    .vbk-lightbox-caption-content {
        font-size: 13px;
        line-height: 1.5;
    }

    .vbk-caption-list li {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .vbk-lightbox-counter {
        padding: 8px 15px;
        font-size: 14px;
    }

    /* Smaller navigation buttons */
    .vbk-lightbox-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 28px;
    }

    .vbk-lightbox-prev,
    .vbk-lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 36px;
    }

    .vbk-lightbox-prev {
        left: 10px;
    }

    .vbk-lightbox-next {
        right: 10px;
    }
}

/* ============================================================================
   RESPONSIVE DESIGN - MOBILE PORTRAIT (up to 767px in portrait orientation)
   ============================================================================ */

@media screen and (max-width: 767px) and (orientation: portrait) {
    .vbk-lightbox-container {
        padding: 10px;
        align-items: flex-start;
        padding-top: 60px;
    }

    .vbk-lightbox-content {
        flex-direction: column;
        height: auto;
        max-height: calc(100vh - 70px);
        gap: 15px;
        overflow: visible;
    }

    .vbk-lightbox-image-wrapper {
        height: auto;
        max-height: 40vh;
        min-height: 200px;
        flex: 0 0 auto;
        width: 100%;
    }

    .vbk-lightbox-caption-wrapper {
        width: 100%;
        max-width: 100%;
        min-width: auto;
        flex: 1 1 auto;
        min-height: 150px;
        max-height: 50vh;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .vbk-lightbox-caption {
        padding: 15px;
        flex: 1 1 auto;
        overflow-y: auto;
        overflow-x: hidden;
        max-height: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .vbk-lightbox-caption-content {
        font-size: 14px;
        line-height: 1.6;
    }

    .vbk-caption-list {
        padding-left: 15px;
    }

    .vbk-caption-list li {
        font-size: 14px;
    }

    .vbk-lightbox-counter {
        padding: 10px 15px;
        font-size: 14px;
        letter-spacing: 1.5px;
    }

    /* Adjust button positions for mobile */
    .vbk-lightbox-close {
        top: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 32px;
    }

    .vbk-lightbox-prev {
        left: 50%;
        top: auto;
        bottom: 10px;
        transform: translateX(-60px);
        width: 50px;
        height: 50px;
        font-size: 40px;
    }

    .vbk-lightbox-prev:hover:not(:disabled) {
        transform: translateX(-60px) scale(1.05);
    }

    .vbk-lightbox-next {
        right: 50%;
        top: auto;
        bottom: 10px;
        transform: translateX(60px);
        width: 50px;
        height: 50px;
        font-size: 40px;
    }

    .vbk-lightbox-next:hover:not(:disabled) {
        transform: translateX(60px) scale(1.05);
    }
}

/* ============================================================================
   RESPONSIVE DESIGN - MOBILE PORTRAIT FALLBACK (max-width only, no orientation)
   ============================================================================ */

@media screen and (max-width: 480px) {
    .vbk-lightbox-container {
        padding: 10px;
        align-items: flex-start;
        padding-top: 60px;
    }

    .vbk-lightbox-content {
        flex-direction: column;
        height: auto;
        max-height: calc(100vh - 70px);
        gap: 15px;
        overflow: visible;
    }

    .vbk-lightbox-image-wrapper {
        height: auto;
        max-height: 40vh;
        min-height: 200px;
        flex: 0 0 auto;
        width: 100%;
    }

    .vbk-lightbox-caption-wrapper {
        width: 100%;
        max-width: 100%;
        min-width: auto;
        flex: 1 1 auto;
        min-height: 150px;
        max-height: 50vh;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .vbk-lightbox-caption {
        padding: 15px;
        flex: 1 1 auto;
        overflow-y: auto;
        overflow-x: hidden;
        max-height: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .vbk-lightbox-caption-content {
        font-size: 14px;
        line-height: 1.6;
    }

    .vbk-caption-list {
        padding-left: 15px;
    }

    .vbk-caption-list li {
        font-size: 14px;
    }

    .vbk-lightbox-counter {
        padding: 10px 15px;
        font-size: 14px;
        letter-spacing: 1.5px;
    }

    /* Adjust button positions for mobile */
    .vbk-lightbox-close {
        top: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 32px;
    }

    .vbk-lightbox-prev {
        left: 50%;
        top: auto;
        bottom: 10px;
        transform: translateX(-60px);
        width: 50px;
        height: 50px;
        font-size: 40px;
    }

    .vbk-lightbox-prev:hover:not(:disabled) {
        transform: translateX(-60px) scale(1.05);
    }

    .vbk-lightbox-next {
        right: 50%;
        top: auto;
        bottom: 10px;
        transform: translateX(60px);
        width: 50px;
        height: 50px;
        font-size: 40px;
    }

    .vbk-lightbox-next:hover:not(:disabled) {
        transform: translateX(60px) scale(1.05);
    }
}

/* ============================================================================
   RESPONSIVE DESIGN - VERY SMALL MOBILE (< 375px)
   ============================================================================ */

@media screen and (max-width: 374px) {
    .vbk-lightbox-image-wrapper {
        max-height: 35vh;
        min-height: 180px;
    }

    .vbk-lightbox-caption-wrapper {
        max-height: 55vh;
    }

    .vbk-lightbox-caption {
        padding: 12px;
    }

    .vbk-lightbox-caption-content {
        font-size: 13px;
    }

    .vbk-caption-list li {
        font-size: 13px;
    }

    .vbk-lightbox-close {
        width: 40px;
        height: 40px;
        font-size: 28px;
    }

    .vbk-lightbox-prev,
    .vbk-lightbox-next {
        width: 45px;
        height: 45px;
        font-size: 36px;
    }

    .vbk-lightbox-prev {
        transform: translateX(-55px);
    }

    .vbk-lightbox-next {
        transform: translateX(55px);
    }
}

/* ============================================================================
   ACCESSIBILITY & FOCUS STATES
   ============================================================================ */

.vbk-lightbox-close:focus,
.vbk-lightbox-prev:focus,
.vbk-lightbox-next:focus {
    outline: 2px solid #52878C;
    outline-offset: 2px;
}

/* Remove focus outline for mouse users, keep for keyboard users */
.vbk-lightbox-close:focus:not(:focus-visible),
.vbk-lightbox-prev:focus:not(:focus-visible),
.vbk-lightbox-next:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
    .vbk-lightbox {
        display: none !important;
    }
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes vbk-fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes vbk-fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* Smooth image transition */
.vbk-lightbox-image {
    animation: vbk-fadeIn 0.3s ease-in-out;
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

/* No select on buttons */
.vbk-lightbox-close,
.vbk-lightbox-prev,
.vbk-lightbox-next {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Smooth scrolling for caption area */
.vbk-lightbox-caption {
    scroll-behavior: smooth;
}

/* ============================================================================
   DARK MODE SUPPORT (OPTIONAL)
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    /* Already optimized for dark mode, but can add adjustments if needed */
}