ÿþ/* ==========================================================================
   KeithCarlos.com - Production Universal Stylesheet (style.css)
   Standards: Modern Minimalist Dark Theme | Responsive | SEO/AEO/AIO Ready
   ========================================================================== */

/* 1. Global CSS Custom Properties */
:root {
    --bg-color: #0b0d10;
    --surface-color: #14171d;
    --surface-hover: #1c2028;
    --border-color: #242933;
    --text-primary: #f1f3f5;
    --text-secondary: #9aa2b1;
    --accent-color: #0d9488; /* Teal Accent */
    --accent-soft: rgba(13, 148, 136, 0.12);
    --accent-border: rgba(13, 148, 136, 0.3);
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --max-width: 1200px;
    --nav-height: 70px;
}



/* 2. Base Reset & Layout */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding-top: var(--nav-height);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--text-primary);
}



/* 3. Global Sticky Navigation */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(11, 13, 16, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.nav-link:hover {
    color: var(--text-primary);
}



/* Navigation Dropdown Menu */
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0;
    list-style: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1001;
}

.nav-item:hover .dropdown-menu {
    display: block;
}

.dropdown-item a {
    display: block;
    padding: 0.6rem 1.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.dropdown-item a:hover {
    background: var(--surface-hover);
    color: var(--accent-color);
}



/* 4. Gateway Header & Hero Section */
header {
    padding: 3rem 0 2rem;
    border-bottom: 1px solid var(--border-color);
}

.profile-title {
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.profile-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1.5rem;
}

.hero-bio {
    font-size: 1.05rem;
    color: var(--text-primary);
    max-width: 820px;
    margin-bottom: 2rem;
}



/* Above-the-Fold LinkedIn Skills Section */
.skills-section {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.skills-header {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-pill {
    background: var(--accent-soft);
    color: var(--text-primary);
    border: 1px solid var(--accent-border);
    padding: 0.4rem 0.85rem;
    border-radius: 20px;
    font-size: 0.88rem;
    font-weight: 500;
}



/* 5. AEO & AIO Search Engine Answer Block */
.aeo-summary-block {
    margin: 3rem 0;
    background: var(--surface-color);
    border-left: 3px solid var(--accent-color);
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.aeo-summary-block h2 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.aeo-summary-block p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}



/* 6. Portfolio Cards & Minisites Grid */
main {
    padding: 2.5rem 0;
}

.section-heading {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    background: var(--surface-hover);
}

.card-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.card-description {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.card-skills-supported {
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--accent-color);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.card-link:hover {
    color: var(--accent-color);
}




/* 7. Embedded Portfolio Gallery Pages */
.page-header {
    padding: 2.5rem 0 2rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2.5rem;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.page-title {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--accent-color);
    font-size: 0.92rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gallery-switch-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 0.55rem 1.1rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.gallery-switch-link:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: var(--surface-hover);
}



/* Executive Impact / Highlight Cards */
.impact-highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.highlight-card h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.highlight-card h3::before {
    content: " %";
    color: var(--accent-color);
    font-size: 0.75rem;
}

.highlight-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 3.5rem 0 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-color);
}




/* Gallery Grids */

/* Vertical Portrait Grid (3:4 ratio - 600x800) */
.gallery-grid-portrait {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.gallery-grid-portrait .gallery-card img {
    aspect-ratio: 3 / 4;
}

/* Square Feature Grid (1:1 ratio - 640x640) */
.gallery-grid-square {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-bottom: 4rem;
}

.gallery-grid-square .gallery-card img {
    aspect-ratio: 1 / 1;
}

/* Horizontal / Event Grid (16:9 or 4:3 ratio) */
.gallery-grid-landscape {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.gallery-grid-landscape .gallery-card img {
    aspect-ratio: 16 / 9;
}



/* Gallery Item Cards */
.gallery-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.gallery-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
}

.gallery-card img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
    background: #1a1e24;
    cursor: zoom-in; /* Cursor cue for lightbox modal */
}

.gallery-card-caption {
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
}

.gallery-card-caption span {
    color: var(--text-primary);
    font-weight: 500;
}



/* 8. Full-Size Universal Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(11, 13, 16, 0.94);
    backdrop-filter: blur(12px);
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
}

.lightbox.active {
    display: flex;
}

.lightbox-img {
    max-width: 92vw;
    max-height: 92vh;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.85);
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 1.5rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.lightbox-close:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}



/* 9. Global Footer */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

footer a {
    color: var(--text-secondary);
}

footer a:hover {
    color: var(--text-primary);
}

/* 10. Responsive Breakpoints */
@media (max-width: 992px) {
    .nav-menu {
        display: none; /* Mobile navigation toggle state */
    }
}

@media (max-width: 640px) {
    .profile-title {
        font-size: 2rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .gallery-grid-portrait, 
    .gallery-grid-square,
    .gallery-grid-landscape {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .impact-highlights-grid {
        grid-template-columns: 1fr;
    }

    .header-top {
        flex-direction: column;
    }
}