/* =========================================================
   Design tokens, reset, header e footer — compartilhados
   por todas as páginas do portfólio.
   ========================================================= */

:root {
    /* Cores */
    --bg: #0b0e14;
    --bg-elevated: #10141d;
    --surface: #131926;
    --surface-2: #1a2130;
    --border: #232c3d;
    --border-strong: #33405a;
    --text: #e7ebf3;
    --text-strong: #ffffff;
    --muted: #98a3b8;
    --accent: #6ea8fe;
    --accent-strong: #3f83f8;
    --accent-soft: rgba(110, 168, 254, 0.12);
    --gold: #ffd166;

    /* Tipografia */
    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --step--1: clamp(0.82rem, 0.79rem + 0.14vw, 0.9rem);
    --step-0: clamp(1rem, 0.97rem + 0.16vw, 1.06rem);
    --step-1: clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
    --step-2: clamp(1.45rem, 1.25rem + 0.85vw, 2rem);
    --step-3: clamp(2rem, 1.6rem + 1.9vw, 3.1rem);

    /* Espaçamento e formas */
    --radius: 16px;
    --radius-sm: 10px;
    --radius-pill: 999px;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.38);
    --container: 1080px;
    --header-h: 66px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--step-0);
    line-height: 1.65;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

/* Brilho sutil no topo da página */
body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto 0;
    height: 520px;
    background:
        radial-gradient(60% 100% at 15% 0%, rgba(63, 131, 248, 0.16), transparent 70%),
        radial-gradient(45% 90% at 85% 10%, rgba(255, 209, 102, 0.07), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--text-strong);
}

h1,
h2,
h3,
h4 {
    line-height: 1.2;
    color: var(--text-strong);
    margin: 0 0 0.6rem;
    letter-spacing: -0.015em;
}

h1 { font-size: var(--step-3); }
h2 { font-size: var(--step-2); }
h3 { font-size: var(--step-1); }

p {
    margin: 0 0 1rem;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ------------------------- Layout ------------------------- */

.container {
    width: min(100% - 2.5rem, var(--container));
    margin-inline: auto;
    position: relative;
    z-index: 1;
}

main {
    display: block;
    min-height: 60vh;
}

.section {
    padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}

.section + .section {
    padding-top: 0;
}

.section-head {
    margin-bottom: 2rem;
    max-width: 62ch;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 0.5rem;
    font-size: var(--step--1);
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}

.lead {
    font-size: var(--step-1);
    color: var(--muted);
}

.muted {
    color: var(--muted);
}

/* Cabeçalho das páginas internas */
.page-header {
    padding: calc(var(--header-h) + 3rem) 0 0;
}

.page-header p {
    max-width: 62ch;
    color: var(--muted);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 1200;
    padding: 0.75rem 1.25rem;
    background: var(--accent-strong);
    color: #071020;
    font-weight: 600;
    border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
    left: 0;
}

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(11, 14, 20, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: var(--header-h);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--text-strong);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    flex: none;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent-strong), #7c5cff);
    color: #04101f;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0;
}

.brand-text {
    font-size: 0.98rem;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.site-nav a {
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-pill);
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.site-nav a:hover {
    color: var(--text-strong);
    background: var(--surface-2);
}

.site-nav a[aria-current="page"] {
    color: var(--text-strong);
    background: var(--accent-soft);
}

.site-nav .nav-cta {
    margin-left: 0.4rem;
    border: 1px solid var(--border-strong);
    color: var(--text);
}

.site-nav .nav-cta:hover {
    border-color: var(--accent);
    color: var(--text-strong);
}

/* Botão hambúrguer (apenas mobile) */
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 18px;
    height: 2px;
    margin: 3px auto;
    border-radius: 2px;
    background: var(--text);
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
}

@media (max-width: 820px) {
    .nav-toggle {
        display: block;
    }

    .brand-text {
        display: none;
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 0.15rem;
        padding: 0.75rem 1.25rem 1.25rem;
        background: var(--bg-elevated);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    }

    .site-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav a {
        padding: 0.75rem 1rem;
        border-radius: var(--radius-sm);
        font-size: 1rem;
    }

    .site-nav .nav-cta {
        margin: 0.35rem 0 0;
        text-align: center;
    }
}

/* ------------------------- Componentes ------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.35rem;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--accent-strong);
    color: #04101f;
}

.btn-primary:hover {
    background: var(--accent);
    color: #04101f;
}

.btn-ghost {
    border-color: var(--border-strong);
    color: var(--text);
    background: transparent;
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--text-strong);
    background: var(--accent-soft);
}

.card {
    padding: 1.6rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}

.card h3 {
    margin-bottom: 0.4rem;
}

.card p:last-child {
    margin-bottom: 0;
}

.grid {
    display: grid;
    gap: 1.25rem;
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.tag {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    color: var(--muted);
    font-size: var(--step--1);
    font-weight: 500;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: var(--radius-pill);
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.icon-brand {
    width: 1.15em;
    height: 1.15em;
    flex: none;
    fill: currentColor;
    stroke: none;
    display: inline-block;
    vertical-align: -0.18em;
}

.icon {
    width: 1.1em;
    height: 1.1em;
    flex: none;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: -0.15em;
}

/* ------------------------- Footer ------------------------- */

.site-footer {
    margin-top: clamp(3rem, 6vw, 5rem);
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    background: var(--bg-elevated);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: var(--muted);
    font-size: var(--step--1);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.footer-links a {
    color: var(--muted);
}

.footer-links a:hover {
    color: var(--text-strong);
}

/* ------------------------- Acessibilidade ------------------------- */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}