/* ============================================
   Chad Harnish Portfolio
   Color Palette: Charcoal / Deep Slate / Electric Blue
   ============================================ */

:root {
    --transition-fast: 0.2s ease;
    --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 320px;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--surface);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============================================
   Gradient Mesh Background (Canvas)
   ============================================ */
#gradient-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
}

/* ============================================
   Layout
   ============================================ */
.site-wrapper {
    position: relative;
    display: flex;
    min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--charcoal) 0%, var(--deep-slate) 100%);
    border-right: 1px solid var(--border);
    z-index: 100;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    width: 44px;
    height: 44px;
    background: var(--charcoal);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.sidebar-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-fast);
}

.sidebar-content {
    padding: 40px 28px 28px;
}

/* Profile */
.profile {
    text-align: center;
    margin-bottom: 32px;
}

.profile-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--electric-blue);
    box-shadow: 0 0 20px var(--electric-blue-glow);
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--deep-slate), var(--charcoal));
    font-size: 36px;
    font-weight: 700;
    color: var(--electric-blue);
    font-family: var(--font-display);
}

.profile-name {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--text-primary), var(--electric-blue-bright));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.profile-tagline {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.profile-location {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Theme Chooser — 3D Orb Buttons */
.theme-chooser {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 12px 0 16px;
    position: relative;
    z-index: 10;
}

.theme-btn {
    position: relative;
    width: 32px;
    height: 32px;
    padding: 0;
    background: none;
    border: 2px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.theme-btn:hover {
    transform: scale(1.2);
}

.theme-btn.active {
    border-color: var(--electric-blue);
    transform: scale(1.15);
}

.theme-orb {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    pointer-events: none;
    background: radial-gradient(
        circle at 35% 30%,
        var(--orb-shine) 0%,
        var(--orb-color) 45%,
        var(--orb-shadow) 100%
    );
    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.4),
        inset 0 -2px 4px rgba(0, 0, 0, 0.3),
        inset 0 2px 4px rgba(255, 255, 255, 0.2);
}

/* Sidebar Sections */
.sidebar-section {
    margin-bottom: 28px;
}

.section-title {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--electric-blue);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.bio {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 500;
    background: var(--surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: var(--transition-fast);
}

.tag:hover {
    border-color: var(--electric-blue);
    color: var(--electric-blue);
}

/* Social Links */
.social-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: 6px;
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.social-link svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.social-link:hover {
    color: var(--text-primary);
    background: var(--surface);
    border-color: var(--border);
}

/* Book CTA Button */
.book-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    text-decoration: none;
    color: var(--accent-on-dark);
    background: linear-gradient(135deg, var(--electric-blue), var(--electric-blue-bright));
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 20px var(--electric-blue-glow), 0 0 30px rgba(0, 180, 216, 0.15);
    transition: var(--transition-fast);
}

.book-cta svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.book-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(0, 180, 216, 0.5), 0 0 40px rgba(0, 180, 216, 0.25);
}

.copyright {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* ============================================
   Main Content Area
   ============================================ */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 32px 36px;
    min-height: 100vh;
}

/* Gallery Header */
.gallery-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.gallery-title {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--text-primary), var(--electric-blue-bright));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 4px;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px;
}

.filter-btn {
    padding: 8px 20px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: var(--font-sans);
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--electric-blue);
    color: var(--accent-on-dark);
    font-weight: 600;
}

/* Sub-navigation */
.sub-nav {
    margin-bottom: 24px;
}

.sub-nav .filter-bar {
    display: inline-flex;
}

/* ============================================
   Masonry Gallery Grid
   ============================================ */
.gallery-grid {
    columns: 3;
    column-gap: 16px;
}

.gallery-item {
    break-inside: avoid;
    margin-bottom: 16px;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    transition: var(--transition-med);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 20px var(--electric-blue-glow);
    border-color: var(--electric-blue);
}

.gallery-item.hidden {
    display: none;
}

.gallery-item.fade-in {
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Gallery Image */
.gallery-img {
    width: 100%;
    display: block;
}

.gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* EXIF Overlay */
.exif-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px 16px;
    background: linear-gradient(to top, rgba(10, 10, 26, 0.95) 0%, rgba(10, 10, 26, 0.7) 60%, transparent 100%);
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition-med);
    pointer-events: none;
}

.gallery-item:hover .exif-overlay {
    opacity: 1;
    transform: translateY(0);
}

.exif-row {
    display: flex;
    gap: 14px;
    margin-bottom: 4px;
}

.exif-row span {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--electric-blue-bright);
    font-variant-numeric: tabular-nums;
}

.exif-lens {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* ============================================
   Tech Section
   ============================================ */
.tech-section {
    display: none;
}

.tech-section.active {
    display: block;
}

.tech-group {
    margin-bottom: 32px;
}

.tech-group-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--electric-blue);
    margin-bottom: 14px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.tech-section .tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-section .tag {
    padding: 6px 14px;
    font-size: 0.82rem;
}

/* CTA icon sizing */
.cta-icon {
    display: flex;
    align-items: center;
}

.cta-icon svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Case Studies — Card Grid */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.case-study-card {
    border-radius: 10px;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition-med);
    display: flex;
    flex-direction: column;
}

.case-study-card:hover {
    border-color: var(--electric-blue);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3), 0 0 16px var(--electric-blue-glow);
    transform: translateY(-3px);
}

.case-study-focus {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--electric-blue);
    margin-bottom: 8px;
}

.case-study-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.case-study-teaser {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 16px;
}

.case-study-stack-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 16px;
}

.case-study-stack-preview .tag {
    font-size: 0.68rem;
    padding: 3px 8px;
}

.case-study-read-more {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--electric-blue);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.case-study-read-more::after {
    content: '\2192';
}

/* Case Study Detail Modal */
.cs-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-med);
}

.cs-modal.active {
    opacity: 1;
    visibility: visible;
}

.cs-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(6, 6, 18, 0.92);
    backdrop-filter: blur(12px);
}

.cs-modal-panel {
    position: relative;
    width: 90vw;
    max-width: 900px;
    max-height: 85vh;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}

.cs-modal-panel::-webkit-scrollbar {
    width: 5px;
}

.cs-modal-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.cs-modal-close {
    position: sticky;
    top: 0;
    float: right;
    margin: 16px 20px 0 0;
    font-size: 2rem;
    color: var(--text-secondary);
    background: var(--surface-raised);
    border: none;
    cursor: pointer;
    z-index: 10;
    line-height: 1;
    padding: 4px 8px;
    border-radius: 6px;
    transition: var(--transition-fast);
}

.cs-modal-close:hover {
    color: var(--text-primary);
    background: var(--surface);
}

.cs-modal-body {
    display: flex;
    gap: 0;
    padding: 40px;
}

.cs-modal-main {
    flex: 1;
    min-width: 0;
    padding-right: 32px;
}

.cs-modal-focus {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--electric-blue);
    margin-bottom: 8px;
}

.cs-modal-title {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 28px;
    line-height: 1.3;
}

.cs-modal-section {
    margin-bottom: 24px;
}

.cs-modal-section h3 {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--electric-blue);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.cs-modal-section p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

.cs-modal-sidebar {
    width: 200px;
    flex-shrink: 0;
    padding-left: 32px;
    border-left: 1px solid var(--border);
}

.cs-modal-sidebar h3 {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--electric-blue);
    margin-bottom: 14px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.cs-modal-stack {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.cs-modal-stack .tag {
    text-align: center;
    font-size: 0.78rem;
    padding: 6px 12px;
}

/* Modal responsive */
@media (max-width: 768px) {
    .cs-modal-body {
        flex-direction: column;
        padding: 24px;
    }

    .cs-modal-main {
        padding-right: 0;
    }

    .cs-modal-sidebar {
        width: 100%;
        padding-left: 0;
        padding-top: 20px;
        margin-top: 20px;
        border-left: none;
        border-top: 1px solid var(--border);
    }

    .cs-modal-stack {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .cs-modal-panel {
        width: 95vw;
        max-height: 90vh;
    }

    .cs-modal-title {
        font-size: 1.3rem;
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Lightbox
   ============================================ */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(6, 6, 18, 0.96);
    backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-med);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2.4rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition-fast);
    line-height: 1;
}

.lightbox-close:hover {
    color: var(--text-primary);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 20px;
    z-index: 10;
    transition: var(--transition-fast);
}

.lightbox-nav:hover {
    color: var(--electric-blue);
}

.lightbox-prev { left: 10px; }
.lightbox-next { right: 10px; }

.lightbox-content {
    max-width: 85vw;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.lightbox-img-wrap {
    max-width: 100%;
    max-height: 72vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-img-wrap img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-img-wrap img {
    max-width: 100%;
    max-height: 72vh;
    object-fit: contain;
    border-radius: 8px;
}

.lightbox-exif {
    text-align: center;
}

.lightbox-exif .exif-row {
    justify-content: center;
    gap: 20px;
    margin-bottom: 6px;
}

.lightbox-exif .exif-row span {
    font-size: 0.9rem;
}

.lightbox-exif .exif-lens {
    font-size: 0.8rem;
}

/* ============================================
   Responsive
   ============================================ */

/* Tablet */
@media (max-width: 1100px) {
    .gallery-grid {
        columns: 2;
    }
}

/* Mobile Header — visible on small screens only */
.mobile-header {
    display: none;
}

/* Mobile */
@media (max-width: 768px) {
    .mobile-header {
        display: block;
        text-align: center;
        padding-bottom: 24px;
        margin-bottom: 24px;
        border-bottom: 1px solid var(--border);
    }

    .mobile-header-top {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 14px;
        margin-bottom: 10px;
    }

    .mobile-photo {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        overflow: hidden;
        border: 2px solid var(--electric-blue);
        box-shadow: 0 0 12px var(--electric-blue-glow);
        flex-shrink: 0;
    }

    .mobile-photo .profile-photo-placeholder {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--deep-slate), var(--charcoal));
        font-size: 18px;
        font-weight: 700;
        color: var(--electric-blue);
        font-family: var(--font-display);
    }

    .mobile-photo img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .mobile-info {
        text-align: left;
    }

    .mobile-info .profile-name {
        font-size: 1.2rem;
        margin-bottom: 2px;
    }

    .mobile-info .profile-location {
        font-size: 0.72rem;
    }

    .mobile-header .theme-chooser {
        margin: 8px 0 14px;
        gap: 12px;
    }

    .mobile-header .theme-btn {
        width: 28px;
        height: 28px;
    }

    .mobile-header .book-cta {
        padding: 12px 18px;
        font-size: 0.85rem;
    }

    /* Hide profile + CTA from sidebar on mobile — they're in the mobile header */
    .sidebar .profile {
        display: none;
    }

    .sidebar .sidebar-tab-content .sidebar-section:nth-child(2) {
        display: none;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        width: 85vw;
        max-width: 340px;
        transition: left var(--transition-med);
        box-shadow: none;
    }

    .sidebar.open {
        left: 0;
        box-shadow: 8px 0 40px rgba(0, 0, 0, 0.6);
    }

    .sidebar-toggle {
        display: flex;
    }

    .sidebar-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .sidebar-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .sidebar-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .main-content {
        margin-left: 0;
        padding: 72px 16px 24px;
    }

    .gallery-grid {
        columns: 1;
    }

    .gallery-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .gallery-title {
        font-size: 1.4rem;
    }

    .lightbox-nav {
        font-size: 2rem;
        padding: 10px;
    }

    .lightbox-prev { left: 4px; }
    .lightbox-next { right: 4px; }

    .lightbox-img-wrap img {
        max-width: 95vw;
    }
}

/* Small phones */
@media (max-width: 420px) {
    .filter-btn {
        padding: 6px 14px;
        font-size: 0.75rem;
    }

}

/* ============================================
   Utilities
   ============================================ */
::selection {
    background: var(--electric-blue);
    color: var(--charcoal);
}

/* Backdrop for mobile sidebar */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 50;
}

.sidebar-backdrop.active {
    display: block;
}

/* ============================================
   Theme Transition
   Only active during theme switch (not page load)
   ============================================ */
.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
    transition:
        color 0.5s ease,
        background-color 0.5s ease,
        background 0.5s ease,
        border-color 0.5s ease,
        box-shadow 0.5s ease,
        fill 0.5s ease,
        stroke 0.5s ease,
        -webkit-text-fill-color 0.5s ease !important;
}