/**
 * @license
 * SPDX-License-Identifier: Apache-2.0
*/

:root {
    /* Modern Palette */
    --bg-body: #ffffff;
    --bg-body-rgb: 255, 255, 255;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-card-rgb: 255, 255, 255;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b; /* Adjusted from #94a3b8 for better contrast */
    
    --accent: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.15);
    
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    
    --font-main: 'Manrope', sans-serif;
    --font-mono: 'Space Mono', monospace;
    
    --container-width: 1200px;
    --header-height: 70px; /* Adjusted for mobile */
    --radius: 12px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.05), 0 8px 10px -6px rgb(0 0 0 / 0.01);
}

html[data-theme='dark'] {
    --bg-body: #020617;
    --bg-body-rgb: 2, 6, 23;
    --bg-secondary: #0f172a;
    --bg-card: #1e293b;
    --bg-card-rgb: 30, 41, 59;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    
    --border: #1e293b;
    --border-hover: #334155;
    
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

body.modal-open {
    overflow: hidden;
}

img { max-width: 100%; display: block; }
a, button { 
    text-decoration: none; 
    color: inherit; 
    transition: all 0.2s;
    cursor: pointer;
}

/* --- Ambient Backgrounds --- */
.ambient-glow {
    position: fixed; top: -50vh; left: 50%;
    transform: translateX(-50%);
    width: 100vw; height: 100vh;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
    opacity: 0.5; pointer-events: none; z-index: -1; filter: blur(80px);
}

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

/* --- Navigation --- */
.site-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: rgba(var(--bg-body-rgb), 0.8);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
}
.site-header.scrolled { border-color: var(--border); }
.header-inner { height: 100%; display: flex; justify-content: space-between; align-items: center; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    width: 40px; height: 40px; border-radius: 50%; object-fit: cover;
    border: 2px solid var(--border); transition: transform 0.3s ease;
}
.logo:hover .logo-img { transform: scale(1.05); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-link { 
    display: none;
}

.cta-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--text-primary);
    color: var(--bg-body);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.8rem;
    text-align: center;
    white-space: nowrap;
}

/* --- Hero Section --- */
.hero-section {
    padding: 140px 0 60px;
    text-align: center;
    overflow: hidden; /* Contains the visual elements */
    position: relative;
}

.hero-container {
    position: relative;
}

.hero-content { max-width: 900px; margin: 0 auto; }

@keyframes shine {
  to {
    background-position: -200% center;
  }
}

.status-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.4rem 1rem; border-radius: 100px;
    background: var(--bg-secondary); border: 1px solid var(--border);
    font-size: 0.8rem; font-weight: 600; color: var(--text-secondary);
    margin-bottom: 1.5rem; font-family: var(--font-mono);
}
.pulse-dot { width: 8px; height: 8px; background: #10b981; border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
    100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
    line-height: 1.15; font-weight: 800; letter-spacing: -0.04em;
    margin-bottom: 0.5rem; color: var(--text-primary);
    background: linear-gradient( to right, var(--text-primary) 20%, var(--accent) 40%, var(--accent) 60%, var(--text-primary) 80% );
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 6s linear infinite;
}

.hero-desc {
    font-size: 1.1rem; color: var(--text-secondary);
    max-width: 650px; margin: 0 auto 2rem;
}

.hero-subtitle, .hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 2rem;
}
.hero-subtitle {
    margin-bottom: 1.5rem;
    font-weight: 500;
    max-width: 550px;
}

/* Word-by-word Text Animation */
.hero-subtitle, .hero-desc {
    opacity: 1;
}
.hero-subtitle span, .hero-desc span {
    display: inline-block;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.hero-subtitle .highlight {
    opacity: 1; transform: none; transition: none; display: inline;
    background: linear-gradient(90deg, var(--accent), var(--text-primary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; text-fill-color: transparent; font-weight: 700;
}
html[data-theme='dark'] .hero-subtitle .highlight {
    background: linear-gradient(90deg, var(--accent), var(--text-primary));
    -webkit-background-clip: text; background-clip: text;
}
.hero-subtitle.visible span, .hero-desc.visible span {
    opacity: 1; transform: translateY(0);
}

.social-links { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

.hero-visual { display: none; }

/* --- Tech Marquee --- */
.marquee-container {
    width: 100%; overflow: hidden; padding: 3rem 0;
    background: var(--bg-body); border-block: 1px solid var(--border); position: relative;
}
.marquee-container::before, .marquee-container::after {
    content: ''; position: absolute; top: 0; bottom: 0; width: 50px; z-index: 2; pointer-events: none;
}
.marquee-container::before { left: 0; background: linear-gradient(to right, var(--bg-body), transparent); }
.marquee-container::after { right: 0; background: linear-gradient(to left, var(--bg-body), transparent); }
.marquee-content { display: flex; gap: 3rem; animation: scroll 25s linear infinite; width: max-content; }
.tech-item { font-size: 1.2rem; font-weight: 700; color: var(--text-tertiary); white-space: nowrap; opacity: 0.7; }
@keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

html[data-theme='dark'] .tech-item {
    color: var(--text-secondary);
    opacity: 0.8;
}

/* --- Sections --- */
.services-section, .projects-section, .contact-section { padding: 4rem 0; }
.about-section { padding: 4rem 0; background: var(--bg-secondary); border-block: 1px solid var(--border); }
.section-header { margin-bottom: 3rem; }
.section-subtitle { font-family: var(--font-mono); color: var(--accent); font-size: 0.9rem; margin-bottom: 0.5rem; display: block; }
.section-title { font-size: 2rem; letter-spacing: -0.03em; }

.services-grid { 
    display: grid; grid-template-columns: 1fr; gap: 1.5rem;
}
.bento-card {
    background: var(--bg-secondary); padding: 2rem; border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.bento-card:hover { 
    transform: translateY(-5px);
    background: var(--bg-card); box-shadow: var(--shadow-lg), 0 0 40px var(--accent-glow); 
}
.bento-icon { font-size: 1.8rem; margin-bottom: 1rem; }
.bento-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.bento-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Projects Carousel */
#work-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.carousel-nav {
    display: flex;
    gap: 0.5rem;
}
.carousel-nav button {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    padding: 0;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.carousel-nav button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: var(--border);
}
.projects-carousel-viewport {
    overflow: hidden;
    width: 100%;
    margin-top: 2rem;
}
.projects-grid {
    display: flex;
    gap: 1.5rem;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.project-card {
    flex-shrink: 0;
    width: 100%;
    background: rgba(var(--bg-card-rgb), 0.5); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius); border: 1px solid transparent;
    background-image: linear-gradient(rgba(var(--bg-card-rgb), 0.7), rgba(var(--bg-card-rgb), 0.7)), linear-gradient(135deg, var(--border), var(--border-hover));
    background-origin: border-box; background-clip: content-box, border-box;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative; overflow: hidden;
    cursor: pointer;
}
.project-card:hover, .project-card:focus-visible {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg), 0 0 50px var(--accent-glow);
    outline: 1px var(--accent);
    outline-offset: 4px;
}
.card-image-wrapper { aspect-ratio: 16/10; overflow: hidden; border-bottom: 1px solid var(--border); }
.card-image-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.project-card:hover .card-image-wrapper img, .project-card:focus-visible .card-image-wrapper img { transform: scale(1.08); }
.card-content { padding: 1.25rem; }
.card-meta { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-secondary); }
.card-title { font-size: 1.15rem; font-weight: 700; margin: 0.25rem 0 0.5rem; }
.card-desc { color: var(--text-secondary); font-size: 0.85rem; }

.card-links {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transform: translateY(10px);
    transition: all 0.35s ease;
}

.project-card:hover .card-links,
.project-card:focus-within .card-links {
    margin-top: 1rem;
    opacity: 1;
    max-height: 50px;
    transform: translateY(0);
}

/* About */
.about-content-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    text-align: center;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}
.about-avatar { position: relative; }
.avatar-frame { position: relative; display: inline-block; padding: 1rem; background-color: transparent; border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6); box-shadow: none; border: 1px solid var(--border-hover); }
.avatar-frame::before { content: ''; position: absolute; inset: 0.5rem; border: 3px solid var(--accent); border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6); }
.avatar-frame img { display: block; width: 150px; height: 150px; object-fit: cover; border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%; position: relative; }
.about-avatar:hover { transform: translateY(-5px) rotate(2deg); }
.about-text p { font-size: 1rem; color: var(--text-secondary); margin-bottom: 1.5rem; max-width: 600px; margin-inline: auto; }
#about-socials {
    margin-top: 1.5rem;
}

/* Contact CTA */
.contact-section { text-align: center; }
.contact-desc { color: var(--text-secondary); font-size: 1rem; margin-top: 1rem; margin-bottom: 2rem; }

/* --- Footer --- */
.site-footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}

.footer-content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    text-align: center;
}

.footer-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.back-to-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.back-to-top:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* Theme Toggle */
.theme-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 50%;
    overflow: hidden;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    position: absolute;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

html[data-theme='dark'] .sun-icon {
    transform: translateY(150%);
    opacity: 0;
}
html:not([data-theme='dark']) .moon-icon {
    transform: translateY(-150%);
    opacity: 0;
}
html[data-theme='dark'] .moon-icon {
    transform: translateY(0);
    opacity: 1;
}

/* --- Project Modal --- * the section has been moved into index.html for (FUOC) purposes
.project-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s;
}
.project-modal.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
    */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(var(--bg-body-rgb), 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.modal-content {
    position: relative;
    z-index: 201;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.project-modal.visible .modal-content {
    transform: scale(1);
}
.modal-close-btn {
    position: absolute;
    top: 0.75rem; right: 0.75rem;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 1.75rem;
    line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
}
.modal-close-btn:hover {
    transform: scale(1.1);
    border-color: var(--border-hover);
    color: var(--text-primary);
}
.project-viewer-content { padding: 1rem; }
.project-viewer-hero { width: 100%; height: auto; aspect-ratio: 16/9; margin-bottom: 2rem; border-radius: var(--radius); overflow: hidden; }
.project-viewer-hero img { width: 100%; height: 100%; object-fit: cover; }
.project-viewer-body { max-width: 800px; margin: 0 auto; padding: 0 1rem 1rem; }
.project-viewer-header { padding-bottom: 1.5rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.project-viewer-description { color: var(--text-secondary); line-height: 1.8; font-size: 1rem; margin-bottom: 2rem; }
.project-viewer-links { display: flex; flex-direction: column; gap: 1rem; }


/* --- Utilities --- */
.btn {
    padding: 0.8rem 1.6rem; border-radius: 8px; font-weight: 600;
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    text-align: center;
    transition: all 0.2s ease;
}
.btn-primary { background: var(--text-primary); color: var(--bg-body); border: 1px solid var(--text-primary); }
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 0 20px 0 var(--accent-glow);}
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--text-primary); transform: translateY(-2px); box-shadow: 0 0 20px 0 var(--accent-glow);}
.btn.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; border-radius: 6px; }

.loading-message, .error-message {
    text-align: center;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    width: 100%;
    padding: 2rem;
}

/* --- Animation --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}


/* --- Tablet & Desktop Styles --- */
@media (min-width: 768px) {
    :root { --header-height: 80px; }
    .container { padding: 0 2rem; }
    
    .header-actions {
        gap: 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-link { 
        display: block;
        font-size: 0.95rem; 
        font-weight: 600;
        padding: 0;
        color: var(--text-secondary);
    }
    .nav-link:hover { color: var(--text-primary); }


    .cta-link {
        padding: 0.6rem 1.4rem;
        font-size: 0.9rem;
        box-shadow: none;
    }

    .hero-section { padding: 160px 0 80px; }
    .hero-title { font-size: clamp(3rem, 7vw, 5rem); }
    .hero-subtitle { font-size: 1.25rem; }
    .hero-desc { font-size: 1.25rem; margin: 0 auto 3rem; }
    
    .services-section, .projects-section, .contact-section, .about-section { padding: 6rem 0; }
    .section-header { margin-bottom: 4rem; }
    #work .section-header { margin-bottom: 0; }

    .section-title { font-size: 2.5rem; }

    .project-card {
        width: calc(50% - 0.75rem); /* 2 items */
    }
    
    .about-content-wrapper { grid-template-columns: 1fr 1.5fr; gap: 4rem; text-align: left; padding: 4rem; }
    .about-text p { margin-inline: 0; }
    #about-socials {
        justify-content: flex-start;
    }
    .avatar-frame img { width: 200px; height: 200px; }

    .site-footer {
        padding: 2.5rem 0;
    }
    .footer-content-wrapper {
        flex-direction: row;
        justify-content: space-between;
    }
    .footer-copyright {
        text-align: left;
    }

    .project-viewer-content { padding: 2rem; }
    .project-viewer-hero { height: 400px; aspect-ratio: auto; margin-bottom: 4rem; }
    .project-viewer-description { font-size: 1.1rem; }
    .project-viewer-links { flex-direction: row; }
    .project-viewer-body { padding: 0; }

}

/* --- Desktop Styles --- */
@media (min-width: 900px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
    .project-card {
        width: calc(100% / 3 - 1rem); /* 3 items */
    }
}

@media (min-width: 1024px) {
    .nav-links {
        gap: 2rem;
    }
    .project-viewer-hero { height: 500px; }
    .hero-section { padding: 180px 0 100px; }
    .hero-content { position: relative; z-index: 1; }
    .hero-visual {
        display: block; position: absolute;
        top: 0; left: 0; width: 100%; height: 100%;
        z-index: 0;
    }
    #hero-canvas {
        position: absolute; top: 0; left: 0;
        width: 100%; height: 100%;
    }
}