:root {
    --color-bg: #ffffff;
    --color-bg-subtle: #fafafa;
    --color-text: #1a1a1a;
    --color-text-muted: #6b7280;
    --color-accent: #c53030;
    --color-accent-hover: #9b2c2c;
    --color-border: #e5e7eb;
}
.dark-mode {
    --color-bg: #121212;
    --color-bg-subtle: #1e1e1e;
    --color-text: #f5f5f5;
    --color-text-muted: #a1a1aa;
    --color-accent: #e53e3e;
    --color-accent-hover: #f56565;
    --color-border: #2d2d2d;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}


/* nav bar */
header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nameplate a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 1.5rem;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    transition: color 0.2s ease;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--color-accent);
}
.nav-left, .nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* hero section */

#hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 3rem 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

#hero img {
    width: clamp(120px, 20vw, 250px);
    height: clamp(120px, 20vw, 250px);
    border-radius: 50%;
    border: 8px solid var(--color-text);
    object-fit: cover;
    margin-bottom: 1.5rem;
}

#hero h1 {
    font-size: clamp(2rem, 6vw, 3rem);
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

#hero h2 {
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

#hero p {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

#hero-buttons .btn {
    display: inline-flex;
    padding: 0.50rem 2rem;
    margin: 0 0.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    align-items: center;
    gap: 0.5rem;
}
#hero-buttons svg{
    height: 18px;
    width: 18px;
}


#hero a[href="your-resume.pdf"],
#hero a[download] {
    background-color: var(--color-accent);
    color: white;
}

#hero a[href="your-resume.pdf"]:hover {
    background-color: var(--color-accent-hover);
}

#hero a[href="#contact"] {
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

#hero a[href="#contact"]:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* project section */
#projects {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

#projects h2 {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.project-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 1rem;
    background-color: var(--color-border);
}

.project-card h3 {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.project-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Experience section*/
#experience {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

#experience h2 {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
}

.experience-card {
    display: flex;
    gap: 1.5rem;
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 2rem;
}

.experience-card img {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
}

.experience-details h3 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.experience-details .company {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.experience-details .dates {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.experience-details .description {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tags span {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.8rem;
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
}

/* skills section */
#skills {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

#skills h2 {
    font-size: 2rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.skill-card {
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 1.5rem;
    transition: border-color 0.2s ease;
}

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

.skill-card h3 {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.skill-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* CTA section */
#contact {
    max-width: 700px;
    margin: 0 auto;
    padding: 5rem 2rem;
    text-align: center;
}

#contact h2 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

#contact p {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

#contact .social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

#contact .social-links a {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-muted);
    transition: color 0.2s ease;
}

#contact .social-links a:hover {
    color: var(--color-accent);
}

#contact .social-links svg {
    width: 22px;
    height: 22px;
}

/* footer section */
footer {
    background-color: var(--color-bg-subtle);
    border-top: 1px solid var(--color-border);
    padding: 0.6rem;
    text-align: center;
}

footer p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}


/* hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    flex-shrink: 0;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    flex-shrink: 0;
}

.theme-toggle {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: 8px;
    width: 36px;
    height: 36px;
    cursor: pointer;
    color: var(--color-text);
    transition: background-color 0.2s ease;
}

.theme-toggle:hover {
    background-color: var(--color-bg-subtle);
}

.theme-toggle:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.icon-sun,
.icon-moon {
    position: absolute;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.icon-sun {
    transform: rotate(0deg) scale(1);
    opacity: 1;
}

.icon-moon {
    transform: rotate(90deg) scale(0);
    opacity: 0;
}

.dark-mode .icon-sun {
    transform: rotate(-90deg) scale(0);
    opacity: 0;
}

.dark-mode .icon-moon {
    transform: rotate(0deg) scale(1);
    opacity: 1;
}

/* Responsive Styles */
@media (max-width: 768px) {

    /* Navbar */
    nav {
        padding: 1rem;
    }

    .nameplate a {
        font-size: 1.1rem;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--color-bg);
        padding: 1rem;
        border-bottom: 1px solid var(--color-border);
        gap: 1rem;
    }

    .nav-links.active {
        display: flex;
    }
    .nav-links a {
        font-size: 0.85rem;
    }

    .hamburger {
        display: flex;
    }

    /* Hero */
    #hero {
        padding: 3rem 1.5rem;
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    /* Experience */
    .experience-card {
        flex-direction: column;
        text-align: center;
    }

    .experience-card img {
        margin: 0 auto;
    }

    .tags {
        justify-content: center;
    }

    /* Skills */
    .skills-grid {
        grid-template-columns: 1fr;
    }   
}


/* CTA section */
#contact {
    max-width: 700px;
    margin: 0 auto;
    padding: 5rem 2rem;
    text-align: center;
}

#contact h2 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

#contact p {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

#contact .social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

#contact .social-links a {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-muted);
    transition: color 0.2s ease;
}

#contact .social-links a:hover {
    color: var(--color-accent);
}

#contact .social-links svg {
    width: 22px;
    height: 22px;
}