:root {
--primary: #0969da;
    --primary-soft: #e7f0fd;
    --border: #d0d7de;
    --text: #24292f;
    --muted: #57606a;
    --bg-soft: #f6f8fa;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
    max-width: 960px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    color: var(--text);
    background-color: #ffffff;
    /* background-color: rgb(241, 243, 246); */
    line-height: 1.65;
}

h1 {
    font-size: 2.1rem;
    margin-bottom: 0.75rem;
}

h2 {
    font-size: 1.6rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-bottom: 0.4rem;
}

h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
}

h4 {
    font-size: 1rem;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--muted);
}

/* ---------- Header ---------- */

.header-banner img {
    width: 100%;
    max-height: 260px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

/* ---------- Language Switcher ---------- */

.language-switcher {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.language-switcher button {
    padding: 0.5rem 1.1rem;
    font-size: 0.95rem;
    font-weight: 600;
    /* border-radius: 999px; */
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s ease;
}

.language-switcher button:hover {
    background: var(--bg-soft);
}

.language-switcher button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ---------- Content Sections ---------- */

.content-section {
    display: none;
}

#content-en {
    display: block;
}

/* ---------- Paragraphs ---------- */

p {
    margin: 0.6rem 0 1rem;
}

/* ---------- Lists ---------- */

ul {
    padding-left: 1.25rem;
    margin-bottom: 1.2rem;
}

li {
    margin-bottom: 0.4rem;
}

/* ---------- Skills ---------- */

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    width: 100%;

    background: var(--bg-soft);
    box-shadow: 0 1px 3px rgba(27,31,36,0.08);
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}


.github-stats-section {
    background: var(--bg-soft);
    box-shadow: 0 1px 3px rgba(27,31,36,0.08);
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.skills-list img {
    margin-right: 0.4rem;
    margin-bottom: 0.4rem;
}

.skill-row {
    width: 100%;
}

.skill-row h4 {
    margin: 0 0 0.6rem;
    font-weight: 600;
    padding-bottom: 0.35rem;
    /* border-bottom: 1px solid rgba(255,255,255,0.15); */
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

/* ---------- Project / Experience Blocks ---------- */

.project-details {
    margin-top: 0.75rem;
    margin-bottom: 2rem;
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    /* background: #ffffff; */
    background: var(--bg-soft);
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(27,31,36,0.08);
}

/* ---------- Badges ---------- */

.badge-link {
    display: inline-block;
}

/* ---------- Notes & Blockquotes ---------- */

.note {
    font-size: 0.9rem;
    font-style: italic;
    color: var(--muted);
}

blockquote {
    background: var(--primary-soft);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

/* ---------- Media ---------- */

img {
    max-width: 100%;
}

.demo img {
    border-radius: 0.5rem;
    margin-top: 1.2rem;
    box-shadow: 0 1px 3px rgba(27,31,36,0.08);
}
/* ---------- Footer / Contact ---------- */

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 3rem 0;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.content-section { display: none; }
.content-section.active { display: block; }
.language-switcher button.active { font-weight: 600; }