/* --- Global Reset & Variables --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fbfcfe;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --primary: #2563eb;
    --accent: #7c3aed;
    --glass: rgba(255, 255, 255, 0.85);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.dark {
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #1e293b;
    --glass: rgba(2, 6, 23, 0.85);
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease;
    overflow-x: hidden;
}

/* --- Navigation & Circular Logo --- */
nav {
    position: sticky;
    top: 0;
    background: var(--glass);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
}

.nav-logo-circle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1.5px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.nav-left:hover .nav-logo-circle {
    transform: scale(1.05);
}

.logo-text {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: 0.2s;
    cursor: pointer;
}

.nav-link:hover {
    background: var(--bg-secondary);
    color: var(--primary);
}

/* --- Minimalist Hero --- */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 4rem 1.5rem;
}

.container {
    max-width: 1100px;
    margin: auto;
    width: 100%;
}

.small-container {
    max-width: 700px;
}

.hero-name {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    margin-bottom: 1.5rem;
}

.hero-bio {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
}

/* --- Buttons --- */
.btn {
    padding: 0.9rem 2.2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

/* --- Content Sections --- */
section {
    padding: 6rem 1.5rem;
}

.section-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--primary);
    margin-bottom: 2rem;
    font-weight: 700;
}

.thin-hr {
    border: 0;
    height: 1px;
    background: var(--border);
    max-width: 1100px;
    margin: 0 auto;
}

/* --- Skill Tags --- */
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tags span {
    padding: 0.5rem 1.2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* --- Project List --- */
.project-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
}

.project-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    color: var(--text-secondary);
}

.project-arrow {
    font-size: 2rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.3s ease;
}

.project-item:hover .project-arrow {
    transform: translateX(10px);
    color: var(--primary);
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.contact-box {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 700;
}

.contact-link {
    font-size: 1.2rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    word-break: break-all;
}

.contact-link:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
}

/* --- Theme Toggle & Mobile --- */
.theme-toggle {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .hero { text-align: left; min-height: 60vh; }
    .hero-buttons { flex-direction: column; }
    .nav-links { display: none; }
    .contact-grid { grid-template-columns: 1fr; }
}

footer {
    padding: 4rem 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
}