:root {
    --bg-dark: #0a0a0c;
    --bg-slate: #1e293b;
    --card-bg: rgba(255, 255, 255, 0.03);
    --accent: #00AEEF;
    --accent-glow: rgba(0, 174, 239, 0.4);
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --text-muted: #888888;
    --nav-height: 80px;
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-main);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 60px;
    height: 4px;
    background: var(--accent);
}

section a,
dialog a {
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 2px;
    padding: 3px 6px;
    text-decoration: none;
    transition: all 0.3s;
}

section a:hover,
dialog a:hover {
    color: white;
    background: var(--accent);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 6rem 2rem;
}

/* Navigation */
.navbar {
    height: var(--nav-height);
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 2px;
    margin-top: 5px;
}

.logo img {
    height: 65px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dim);
    font-weight: 500;
    transition: 0.3s;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: var(--accent);
}

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    position: relative;
    overflow: hidden;
    background: var(--bg-dark);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 174, 239, 0.1) 0%, transparent 50%);
    opacity: 0.3;
    animation: hero-glow-pulse 5s ease-in-out infinite;
    pointer-events: none;
}

@keyframes hero-glow-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.9; }
}
    animation: bg-glow 5s ease-in-out infinite;
}

@keyframes bg-glow {
    0%, 100% { background: radial-gradient(circle at 80% 20%, rgba(0, 174, 239, 0.05) 0%, transparent 50%); }
    50% { background: radial-gradient(circle at 80% 20%, rgba(0, 174, 239, 0.1) 0%, transparent 50%); }
}

.hero-content {
    flex: 1;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    line-height: 1.1;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.description {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
    cursor: pointer;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn.primary {
    background: var(--accent);
    color: var(--bg-dark);
}

.btn.primary:hover {
    box-shadow: 0 0 25px var(--accent-glow);
    transform: translateY(-2px);
}

.btn.secondary {
    border: 1px solid var(--accent);
    color: var(--accent);
}

.btn.secondary:hover {
    background: rgba(0, 174, 239, 0.1);
    transform: translateY(-2px);
}

.hero-visual {
    flex: 1;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.abstract-grid {
    width: 400px;
    height: 400px;
    background-image: 
        linear-gradient(rgba(0, 174, 239, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 174, 239, 0.3) 1px, transparent 1px);
    background-size: 40px 40px;
    transform: rotateX(45deg) rotateZ(45deg);
    position: relative;
    animation: grid-lines-pulse 5s ease-in-out infinite;
}

@keyframes grid-lines-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.abstract-grid::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0.2;
    filter: blur(40px);
    animation: glow-pulse 5s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(1.1); }
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    font-size: 1.1rem;
    color: var(--text-dim);
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: 0.4s;
}

.about-image img:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* Skills Section */
.skills-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.skills-category {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 3rem;
    border-radius: 8px;
    transition: 0.4s;
}

.skills-category:hover {
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

.skills-category h3 {
    margin-bottom: 2rem;
    color: var(--accent);
    font-size: 1.5rem;
}

.skills-list {
    list-style: none;
}

.skills-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dim);
}

.skills-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Portfolio Section */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: 8px;
    position: relative;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 700;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.card p {
    color: var(--text-dim);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.details-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
    align-self: flex-start;
}

.details-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-dark);
}

.cs-content {
    display: none;
}

/* Locations Section */
.section-intro {
    color: var(--text-dim);
    font-size: 1.1rem;
    max-width: 800px;
    margin-bottom: 3rem;
}

.location-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.location-tile {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.4s;
    height: 350px;
    display: flex;
    flex-direction: column;
}

.location-tile:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.location-img-placeholder {
    flex: 1;
    background: linear-gradient(45deg, var(--bg-slate), #0f172a);
    position: relative;
    overflow: hidden;
}

.location-img-placeholder::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 174, 239, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(0, 174, 239, 0.05) 0%, transparent 40%);
}

/* If the user adds real images later */
.location-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.5s;
}

.location-tile:hover img {
    transform: scale(1.1);
}

.location-info {
    padding: 1.5rem;
    background: rgba(10, 10, 12, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.location-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.location-info p {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Experience Section */
.timeline {
    border-left: 2px solid rgba(255, 255, 255, 0.05);
    padding-left: 2rem;
}

.event {
    margin-bottom: 3.5rem;
    position: relative;
}

.event i {
    color: var(--text-muted);
}

.event::before {
    content: '';
    position: absolute;
    left: -2.55rem;
    top: 0.38rem;
    width: 1rem;
    height: 1rem;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
}

.event-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.event-header span {
    color: var(--accent);
    font-weight: 600;
}

.event ul {
    margin-left: 20px;
}

.event p,
.event li {
    color: var(--text-dim);
}

/* Footer */
footer {
    background: #050507;
    padding: 6rem 0 2rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

footer h2 {
    font-size: 3rem;
    margin-bottom: 3rem;
}

footer div.container {
    padding-bottom: 30px;
}

#contact-form {
    max-width: 600px;
    margin: 3rem auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

#contact-form input,
#contact-form textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    transition: 0.3s;
}

#contact-form input:focus,
#contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.08);
}

#contact-form label.error {
    color: #ff4d4d;
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: block;
}

#contact-form button[type="submit"] {
    -webkit-appearance: none;
    width: 100%;
    border: none;
    outline: none;
}

#contact-form button[disabled] {
    background: #222;
}

#contact-form button[disabled]:hover {
    background: #222;
    border: none;
    box-shadow: none;
    transform: none;
}

#contact-form .form-group.company {
    display: none;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 3rem 0;
}

.btn.chromatek,
.btn.linkedin {
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

.copyright {
    color: var(--text-dim);
    font-size: 0.8rem;
    margin-top: 4rem;
}

/* Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: var(--nav-height);
    }
    
    .hero-content {
        padding-top: 4rem;
    }

    .hero-btns {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .about-grid, .skills-wrapper {
        grid-template-columns: 1fr;
    }

    .event-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Modal Stylings */
dialog {
    background: var(--bg-slate);
    color: white;
    border: 1px solid var(--accent);
    padding: 3rem;
    border-radius: 8px;
    max-width: 800px;
    margin: auto;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

dialog h3 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

dialog p {
    color: var(--text-dim);
    margin-bottom: 2rem;
}

dialog button {
    background: var(--accent);
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
}

div#preview-container {
    display: flex;
    margin: 0 auto 20px auto;
    justify-content: center;
    align-items: center;
    max-width: 600px;
}

div#preview-container a {
    padding: 0;
    display: block;
    line-height: 0;
}

div#preview-container img {
    display: block;
}

div#preview-container span.placeholder {
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--accent);
    border-radius: 2px;
}

div#preview-container span.placeholder img.loader {
    display: block;
    width: 30px;
    height: 30px;
}

form input,
form textarea {
    font-size: 1em;
}