/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Typography and Colors */
:root {
    --color-text: #e0e0e0;
    --color-text-light: #c4c4c4;
    --color-bg: #14161a;
    --color-meta: #8b949e;
    --color-link: #e0e0e0;
    --color-link-hover: #58a6ff;
    --color-accent: #58a6ff;
    --color-border: #2d3139;
    --max-width: 720px;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: "SF Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, "Liberation Mono", monospace;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    font-weight: 400;
    letter-spacing: 0;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 60px 32px 50px;
}

/* Header */
header {
    margin-bottom: 60px;
    position: relative;
}

header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 0;
    width: 50px;
    height: 1px;
    background: linear-gradient(to right, var(--color-accent), transparent);
    opacity: 0.4;
}

h1 {
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0;
    letter-spacing: -0.01em;
    color: var(--color-text);
}

/* Typography */
h2 {
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-meta);
}

h3 {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 6px;
    letter-spacing: 0;
    color: var(--color-text);
}

p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 12px;
    color: var(--color-text-light);
}

.large-text {
    font-size: 1.2rem;
    line-height: 1.5;
    font-weight: 500;
    letter-spacing: -0.005em;
    margin-bottom: 16px;
    color: var(--color-text);
}

.meta {
    font-size: 0.85rem;
    color: var(--color-meta);
    margin-bottom: 8px;
    letter-spacing: 0;
    font-weight: 400;
}

/* Sections */
.section {
    margin-bottom: 50px;
}

.section.intro {
    margin-bottom: 50px;
}

.section.intro .large-text {
    margin-bottom: 14px;
}

/* Research Areas */
.research-areas {
    display: grid;
    gap: 24px;
}

.research-item {
    padding: 0;
}

.research-item h3 {
    margin-bottom: 6px;
}

.research-item p {
    color: var(--color-meta);
    line-height: 1.55;
}

/* Experience Items */
.experience-item {
    margin-bottom: 28px;
}

.experience-item:last-child {
    margin-bottom: 0;
}

/* Project Items */
.project-item {
    margin-bottom: 24px;
}

.project-item:last-child {
    margin-bottom: 0;
}

.project-item h3 {
    margin-bottom: 6px;
}

.project-item p {
    color: var(--color-meta);
    line-height: 1.55;
}

/* Links */
a {
    color: var(--color-link);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

a:hover {
    color: var(--color-link-hover);
}

/* Main content links */
.section a:not(.contact-links a) {
    text-decoration: underline;
    text-decoration-color: rgba(0, 0, 0, 0.2);
    text-underline-offset: 3px;
}

.section a:not(.contact-links a):hover {
    text-decoration-color: rgba(0, 0, 0, 0.5);
}

/* Footer */
footer {
    margin-top: 60px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 20px;
}

.contact-links a {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: -0.005em;
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.contact-links a:hover {
    border-bottom-color: var(--color-link-hover);
}

.copyright {
    font-size: 0.875rem;
    color: var(--color-meta);
    letter-spacing: -0.005em;
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 13px;
    }

    .container {
        padding: 50px 24px 40px;
    }

    header {
        margin-bottom: 50px;
    }

    header::after {
        bottom: -25px;
        width: 50px;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 0.7rem;
        margin-bottom: 20px;
    }

    .large-text {
        font-size: 1.1rem;
    }

    .section {
        margin-bottom: 50px;
    }

    .research-areas {
        gap: 20px;
    }

    .experience-item {
        margin-bottom: 24px;
    }

    .project-item {
        margin-bottom: 20px;
    }

    footer {
        margin-top: 50px;
        padding-top: 28px;
    }

    .contact-links {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 40px 20px 32px;
    }

    header {
        margin-bottom: 40px;
    }

    h1 {
        font-size: 1.6rem;
    }

    .large-text {
        font-size: 1rem;
    }

    .section {
        margin-bottom: 40px;
    }

    .contact-links {
        flex-direction: column;
        gap: 16px;
    }
}

/* Selection */
::selection {
    background-color: rgba(88, 166, 255, 0.3);
    color: var(--color-text);
}

/* Print Styles */
@media print {
    .container {
        max-width: 100%;
        padding: 0;
    }

    header::after {
        display: none;
    }

    a {
        text-decoration: underline;
        color: var(--color-text);
    }

    .contact-links a::after {
        content: " (" attr(href) ")";
        font-size: 0.75rem;
    }

    .section {
        page-break-inside: avoid;
    }
}