:root {
    color-scheme: dark;
    --background: #090e17;
    --surface: #101824;
    --surface-raised: #152130;
    --text: #edf2f8;
    --muted: #a0aebe;
    --accent: #67d6ee;
    --border: #233042;
    --header-height: 6rem;
}

*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 1.5rem);
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-size: 1rem;
    line-height: 1.7;
    overflow-wrap: anywhere;
}

body, button, select {
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

button, select { font-size: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
a, button, select {
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
::selection { background: #244e60; color: #fff; }
[hidden] { display: none !important; }
img { display: block; max-width: 100%; }

svg {
    width: 1.25rem;
    height: 1.25rem;
    flex: 0 0 auto;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { line-height: 1.2; font-weight: 650; text-wrap: balance; }
.container { width: min(100% - 3rem, 72rem); margin-inline: auto; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    inset-block-start: 1rem;
    inset-inline-start: 1rem;
    z-index: 100;
    padding: 0.75rem 1.25rem;
    background: var(--accent);
    color: var(--background);
    border-radius: 0.5rem;
    transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

/* Header and progressive mobile navigation. */
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--border);
    background: var(--background);
}

.header-inner, .header-panel, .nav-list, .brand, .language-form, .menu-toggle {
    display: flex;
    align-items: center;
}

.header-inner {
    min-height: 5.5rem;
    justify-content: space-between;
    gap: 1.5rem;
    padding-block: 0.75rem;
}

.brand { gap: 0.75rem; font-size: 0.95rem; font-weight: 600; line-height: 1.4; }
.brand-mark {
    display: grid;
    grid-auto-flow: column;
    place-content: center;
    flex: 0 0 2.5rem;
    height: 2.5rem;
    border: 1px solid #304052;
    border-radius: 0.6rem;
    font-size: 1rem;
    letter-spacing: -0.05em;
}
.brand-mark span { color: var(--accent); }
.header-panel { gap: 1.5rem; min-width: 0; }

.nav-list {
    flex-wrap: wrap;
    gap: 0.25rem 1.5rem;
    list-style: none;
    padding: 0;
    margin: 0;
}
.nav-list a {
    display: block;
    padding-block: 0.625rem;
    color: var(--muted);
    font-size: 0.875rem;
}
.nav-list a:hover, .project-link:hover { color: var(--accent); }

.language-form {
    gap: 0.15rem;
    padding-inline-start: 1rem;
    border-inline-start: 1px solid var(--border);
    color: var(--muted);
}
.language-icon { width: 1rem; height: 1rem; margin-inline-end: 0.25rem; }
.language-form select {
    width: auto;
    max-width: 100%;
    min-height: 2.75rem;
    padding: 0.4rem 0.2rem;
    border: 0;
    border-radius: 0.25rem;
    background: var(--background);
    color: var(--text);
    font-size: 0.8rem;
}
.language-form button, .menu-toggle {
    min-width: 2.75rem;
    min-height: 2.75rem;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    background: transparent;
    color: var(--muted);
}
.language-form button { display: grid; place-items: center; }
.language-form button:hover, .menu-toggle:hover {
    background: var(--surface-raised);
    color: var(--text);
}
.menu-toggle {
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-color: var(--border);
    flex-shrink: 0;
}

/* Introduction and the existing low-resolution portrait. */
.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 0.9fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 5rem);
    padding-block: clamp(4rem, 8vw, 7.5rem);
}
.eyebrow {
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.13em;
    line-height: 1.8;
    text-transform: uppercase;
}
.eyebrow > span { margin-inline-end: 0.5rem; color: var(--muted); }
.hero-greeting { margin-top: 1.6rem; color: #c0ccda; font-size: clamp(1rem, 2vw, 1.2rem); }
.hero h1 {
    margin-top: 0.7rem;
    font-size: clamp(2.5rem, 4.6vw, 4rem);
    letter-spacing: -0.045em;
    line-height: 1.13;
}
.hero h1 span { display: block; color: var(--accent); }
.hero-description {
    max-width: 33rem;
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 1.0625rem;
    line-height: 1.85;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    min-height: 3.1rem;
    padding: 0.75rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
}
.button-primary { border-color: var(--accent); background: var(--accent); color: #0a1722; }
.button-primary:hover { border-color: #a1e8f7; background: #a1e8f7; }
.button-secondary { background: var(--surface); }
.button-secondary:hover { border-color: #45566b; background: var(--surface-raised); }
.hero-note {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 2rem;
    color: var(--muted);
    font-size: 0.75rem;
}
.hero-note > span, .profile-dot {
    width: 0.35rem;
    height: 0.35rem;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--accent);
}

.profile-card {
    width: 100%;
    max-width: 20rem;
    justify-self: end;
    padding: 1.5rem;
    border: 1px solid #2b3b4d;
    border-radius: 1rem;
    background: linear-gradient(145deg, #142332, var(--surface) 65%);
    box-shadow: 0 0 60px -30px rgb(103 214 238 / 15%);
    text-align: center;
}
.profile-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--muted);
    font-family: ui-monospace, Consolas, monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
}
.profile-photo-frame {
    width: fit-content;
    max-width: 100%;
    margin: 1.75rem auto 1.5rem;
    padding: 0.4rem;
    border: 1px solid #38566b;
    border-radius: 5rem 5rem 0.75rem 0.75rem;
    background: var(--background);
}
.profile-photo { width: 8rem; height: auto; border-radius: 4.5rem 4.5rem 0.5rem 0.5rem; }
.profile-name { font-size: 1.1rem; font-weight: 600; }
.profile-description { margin-top: 0.2rem; color: var(--muted); font-size: 0.8rem; }
.profile-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: #b3c7d8;
    font-family: ui-monospace, Consolas, monospace;
    font-size: 0.7rem;
}

/* Content sections: flexible text and independent project cards. */
.section { padding-block: clamp(3.5rem, 6vw, 5rem); }
.section-heading { margin-bottom: 2rem; }
.section-heading h2 {
    margin-top: 0.65rem;
    font-size: clamp(1.8rem, 3vw, 2.35rem);
    letter-spacing: -0.035em;
}
.section-heading > p:not(.eyebrow) { max-width: 40rem; margin-top: 1rem; color: var(--muted); }
.section-about { border-block: 1px solid var(--border); background: #0d131e; }
.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
    gap: 2rem;
}
.about-grid .section-heading { margin-bottom: 0; }
.about-copy { color: var(--muted); }
.about-copy .about-lead { margin-bottom: 1rem; color: var(--text); font-size: 1.2rem; }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}
.project-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.75rem;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    background: var(--surface);
}
.project-card-featured {
    border-color: #315164;
    background: linear-gradient(145deg, #132332, var(--surface) 65%);
}
.project-card-top {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    width: 100%;
    margin-bottom: 1.75rem;
}
.project-icon, .contact-icon {
    display: grid;
    place-items: center;
    flex: 0 0 2.75rem;
    height: 2.75rem;
    border: 1px solid #2b4052;
    border-radius: 0.6rem;
    background: #142433;
    color: var(--accent);
}
.project-category { color: var(--muted); font-size: 0.7rem; line-height: 1.5; }
.project-card h3 { margin-bottom: 1rem; font-size: 1.25rem; letter-spacing: -0.02em; }
.project-card > p { margin-bottom: 1.5rem; color: var(--muted); font-size: 0.9rem; }
.tag-list, .technology-list {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
    list-style: none;
}
.tag-list { gap: 0.5rem; margin-bottom: 1.5rem; }
.tag-list li {
    padding: 0.2rem 0.6rem;
    border: 1px solid #2a3c4e;
    border-radius: 0.3rem;
    background: #142130;
    color: #bed0e0;
    font-size: 0.7rem;
}
.project-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    min-height: 2.75rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    font-weight: 600;
}
#tecnologias { border-top: 1px solid var(--border); }
.technology-list { gap: 0.75rem; }
.technology-list li {
    padding: 0.8rem 1.4rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--surface);
    color: #d0dce8;
    font-size: 0.9rem;
}

.section-contact { padding-top: 1rem; }
.contact-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 5rem);
    padding: clamp(1.5rem, 4vw, 3.5rem);
    border: 1px solid #2b4052;
    border-radius: 1rem;
    background: linear-gradient(120deg, #13212e, var(--surface) 70%);
}
.contact-panel .section-heading { margin-bottom: 0; }
.contact-links { min-width: 0; }
.contact-link { display: flex; align-items: center; gap: 1rem; padding-block: 1rem; }
.contact-link + .contact-link { border-top: 1px solid #2b3b4b; }
.contact-monogram { font-family: ui-monospace, Consolas, monospace; font-size: 1.1rem; font-weight: 600; }
.contact-label {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
    font-size: 0.8rem;
    color: var(--muted);
}
.contact-label strong { color: var(--text); font-size: 0.9rem; font-weight: 600; }
.contact-link > svg { color: var(--muted); }
.contact-link:hover .contact-label strong, .contact-link:hover > svg { color: var(--accent); }
.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.75rem; }
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem 2rem;
    padding-block: 1.75rem;
}
.footer-inner span { color: var(--text); }

@media (max-width: 64rem) {
    .header-inner { flex-wrap: wrap; }
    .header-panel {
        flex-basis: 100%;
        justify-content: space-between;
        padding-block: 0.5rem;
    }
    .hero { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 2rem; }
    .projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .project-card { padding: 1.5rem; }
}

@media (max-width: 44rem) {
    .container { width: min(100% - 2.5rem, 72rem); }
    .header-inner { min-height: 4.75rem; gap: 0.75rem; }
    .header-panel {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        max-height: 70vh;
        max-height: 70dvh;
        overflow-y: auto;
    }
    .nav-list {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.25rem 1rem;
    }
    .nav-list a { padding: 0.65rem 0.4rem; }
    .language-form {
        padding: 0.75rem 0 0;
        border-inline-start: 0;
        border-top: 1px solid var(--border);
    }
    .hero, .about-grid, .projects-grid, .contact-panel { grid-template-columns: minmax(0, 1fr); }
    .hero { gap: 3rem; padding-top: 3.5rem; }
    .hero h1 { font-size: clamp(2.1rem, 8vw, 3.25rem); }
    .hero-description { font-size: 1rem; }
    .profile-card { justify-self: center; }
    .about-grid, .contact-panel { gap: 1.5rem; }
    .contact-link { gap: 0.75rem; }
    .technology-list li { padding: 0.65rem 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; }
}