/* ==========================================================================
   Boxti — Base
   Reset, estilos globais, container e utilitários de tipografia.
   Depende de tokens.css. Não contém estilos de seção.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Reset moderno
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-weight: var(--fw-regular);
    font-size: var(--fs-body);
    line-height: var(--lh-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    /* Gradiente radial sutil fixo sobre o fundo escuro */
    background-image: var(--gradient-bg);
    background-repeat: no-repeat;
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
    overflow-x: hidden;
}

img,
picture,
svg,
video {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul,
ol {
    list-style: none;
}

button,
input,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

:focus-visible {
    outline: 2px solid var(--color-lime);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

::selection {
    background: var(--color-lime);
    color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Tipografia base
   Títulos misturam peso regular + bold na mesma frase:
   <h2 class="title">Mais que tecnologia. <strong>Tecnologia que resolve.</strong></h2>
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--fw-bold);
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
    color: var(--color-text);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
    line-height: var(--lh-relaxed);
    color: var(--color-text-secondary);
}

strong,
b {
    font-weight: var(--fw-bold);
}

/* Título de peso misto: base regular, ênfase em bold no <strong> */
.title {
    font-weight: var(--fw-regular);
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
    color: var(--color-text);
}

.title strong,
.title b {
    font-weight: var(--fw-bold);
}

.title--display { font-size: var(--fs-display); }
.title--h1 { font-size: var(--fs-h1); }
.title--h2 { font-size: var(--fs-h2); }
.title--h3 { font-size: var(--fs-h3); }

/* --------------------------------------------------------------------------
   Utilitários de cor / texto
   -------------------------------------------------------------------------- */
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-lime { color: var(--color-lime); }
.text-blue { color: var(--color-blue); }
.text-white { color: var(--color-white); }

.lead {
    font-size: var(--fs-body-lg);
    line-height: var(--lh-relaxed);
    color: var(--color-text-secondary);
}

/* Rótulo pequeno em maiúsculas (eyebrow) */
.eyebrow {
    display: inline-block;
    font-size: var(--fs-small);
    font-weight: var(--fw-semibold);
    letter-spacing: var(--ls-caps);
    text-transform: uppercase;
    color: var(--color-lime);
}

/* --------------------------------------------------------------------------
   Layout — container central e seções
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.section {
    padding-block: var(--section-padding-y);
    /* impede que a âncora pare atrás do header fixo */
    scroll-margin-top: var(--header-height, 88px);
}

.section--alt {
    background-color: var(--color-bg-alt);
}

.section--deep {
    background-color: var(--color-bg-deep);
}

/* --------------------------------------------------------------------------
   Card base — fundo translúcido + borda sutil
   -------------------------------------------------------------------------- */
.card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: border-color var(--transition-base),
                background-color var(--transition-base),
                transform var(--transition-base);
}

.card:hover {
    background-color: var(--color-card-bg-hover);
    border-color: var(--color-card-border-hover);
}

/* --------------------------------------------------------------------------
   Botões base
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-pill);
    font-weight: var(--fw-semibold);
    font-size: var(--fs-body);
    line-height: 1;
    transition: transform var(--transition-fast),
                box-shadow var(--transition-base),
                background-color var(--transition-base),
                color var(--transition-base);
}

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

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

.btn--primary:hover {
    box-shadow: var(--shadow-lime);
}

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

.btn--outline:hover {
    border-color: var(--color-lime);
    color: var(--color-lime);
}

/* --------------------------------------------------------------------------
   Acessibilidade
   -------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}