/* ============================================================
   Responsive — Mobile / Tablet Breakpoints
   ============================================================ */

/* ---------- Tablet (< 768px) ---------- */
@media (max-width: 768px) {
    /* Navigation */
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        background: var(--color-bg);
        padding: 24px;
        gap: 4px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 9999;
        overflow-y: auto;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.1rem;
        padding: 14px 16px;
    }

    /* Hero */
    #hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text {
        order: 2;
        max-width: 100%;
    }

    .hero-photo {
        order: 1;
        display: flex;
        justify-content: center;
    }

    .profile-photo-wrapper {
        width: 200px;
        height: 200px;
    }

    .hero-name {
        font-size: 2.4rem;
    }

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

    /* Sections */
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.7rem;
    }

    /* Publications */
    .pub-card {
        padding: 20px;
    }

    .pub-card-header {
        flex-direction: column;
        gap: 8px;
    }

    /* CV */
    .cv-entry {
        flex-direction: column;
        gap: 4px;
    }

    .cv-entry-period {
        margin-left: 0;
        font-size: 0.82rem;
    }

    /* Theme Panel */
    .theme-panel {
        right: 16px;
        left: 16px;
        width: auto;
    }

    /* Scroll to top */
    .scroll-top-btn {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* ---------- Small Mobile (< 480px) ---------- */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-name {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 1.1rem;
    }

    .profile-photo-wrapper {
        width: 160px;
        height: 160px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .pub-title {
        font-size: 1rem;
    }

    .pub-links {
        gap: 6px;
    }

    .pub-link-btn {
        padding: 4px 10px;
        font-size: 0.75rem;
    }

    .bibtex-content pre {
        font-size: 0.7rem;
        padding: 12px;
        padding-right: 40px;
    }

    .nav-container {
        padding: 0 16px;
    }

    .filter-pill {
        padding: 5px 12px;
        font-size: 0.78rem;
    }
}

/* ---------- Very small (< 375px) ---------- */
@media (max-width: 375px) {
    .hero-name {
        font-size: 1.7rem;
    }

    .hero-title {
        font-size: 1rem;
    }

    .profile-photo-wrapper {
        width: 140px;
        height: 140px;
    }

    .social-link {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }
}

/* ---------- Large screens (> 1200px) ---------- */
@media (min-width: 1200px) {
    .container {
        max-width: 960px;
    }
}