/* ==========================================================================
   Componentes reutilizáveis — botões, chips, glass, reveal
   ========================================================================== */

/* --- Botão pílula --------------------------------------------------------- */
.btn {
    --btn-bg: var(--glass-bg-2);
    --btn-fg: var(--text);
    --btn-border: var(--line-strong);
    --btn-badge-bg: var(--co-accent);
    --btn-badge-fg: #fff;

    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    min-height: 46px;
    padding: 0.35rem 0.4rem 0.35rem 1.25rem;
    font-family: var(--font-text);
    font-size: var(--fs-sm);
    font-weight: 600;
    letter-spacing: var(--tracking-snug);
    line-height: 1;
    white-space: nowrap;
    color: var(--btn-fg);
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    border-radius: var(--radius-pill);
    transition:
        transform var(--dur-base) var(--ease-out-expo),
        background-color var(--dur-base) var(--ease-apple),
        border-color var(--dur-base) var(--ease-apple),
        box-shadow var(--dur-base) var(--ease-apple);
    will-change: transform;
}

.btn:active {
    transform: scale(0.97);
}

.btn__badge {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    font-size: 1.05rem;
    color: var(--btn-badge-fg);
    background: var(--btn-badge-bg);
    border-radius: 50%;
    transition: transform var(--dur-slow) var(--ease-out-expo);
}

.btn--light {
    --btn-bg: #fff;
    --btn-fg: var(--co-ink);
    --btn-border: #fff;
    --btn-badge-bg: var(--co);
}

.btn--accent {
    --btn-bg: var(--co-accent);
    --btn-fg: #fff;
    --btn-border: var(--co-accent);
    --btn-badge-bg: #fff;
    --btn-badge-fg: var(--co);
    box-shadow: var(--shadow-accent);
}

.btn--ghost {
    --btn-bg: transparent;
    padding-right: 1.25rem;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.btn--block {
    width: 100%;
    justify-content: space-between;
}

@media (hover: hover) {
    .btn:hover {
        transform: translateY(-2px);
    }

    .btn:hover .btn__badge {
        transform: rotate(45deg);
    }

    .btn--light:hover {
        box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
    }

    .btn--accent:hover {
        --btn-bg: var(--co-accent-2);
        --btn-border: var(--co-accent-2);
    }

    .btn--ghost:hover {
        --btn-bg: var(--glass-bg-2);
        --btn-border: rgba(255, 255, 255, 0.32);
    }
}

/* --- Botão de ícone quadrado (referência: caixa com seta) ------------------ */
.icon-btn {
    display: grid;
    place-items: center;
    flex: none;
    width: 56px;
    height: 56px;
    font-size: 1.25rem;
    color: var(--text);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    transition:
        background-color var(--dur-base) var(--ease-apple),
        border-color var(--dur-base) var(--ease-apple),
        transform var(--dur-base) var(--ease-out-expo);
}

.icon-btn .icon {
    transition: transform var(--dur-base) var(--ease-out-expo);
}

@media (hover: hover) {
    .icon-btn:hover {
        background: var(--glass-bg-2);
        border-color: var(--line-strong);
    }

    .icon-btn:hover .icon {
        transform: translateX(3px);
    }
}

/* --- Chip --------------------------------------------------------------------- */
.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.4rem 0.8rem;
    font-size: var(--fs-xs);
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--text-2);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-pill);
}

.chip::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--co-accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--co-accent);
}

/* --- Vidro ---------------------------------------------------------------------- */
.glass {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.10), rgba(255, 255, 255, 0.04));
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    backdrop-filter: blur(var(--glass-blur)) saturate(140%);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        var(--shadow-lg);
}

/* --- Hambúrguer ------------------------------------------------------------------ */
.burger {
    position: relative;
    display: block;
    width: 20px;
    height: 12px;
}

.burger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition:
        transform var(--dur-slow) var(--ease-out-expo),
        top var(--dur-slow) var(--ease-out-expo);
}

.burger span:first-child { top: 0; }
.burger span:last-child  { top: 10px; }

[aria-expanded="true"] .burger span:first-child {
    top: 5px;
    transform: rotate(45deg);
}

[aria-expanded="true"] .burger span:last-child {
    top: 5px;
    transform: rotate(-45deg);
}

/* --- Rótulo de seção (mono, com ponto de acento) ----------------------------------- */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-mono);
    font-size: var(--fs-2xs);
    font-weight: 500;
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    color: var(--eyebrow-color, var(--text-3));
}

.eyebrow::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--co-accent);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(var(--co-accent-rgb), 0.8);
}

/* --- Título em dois tons (mesma voz do título do hero) -----------------------------
   Linhas sólidas e "apagadas" em caixa alta. As cores vêm do contexto:
   --title-solid / --title-ghost (padrão: sobre escuro).
   ------------------------------------------------------------------------------------ */
.display-title {
    display: grid;
    font-family: var(--font-display);
    font-size: var(--fs-title, clamp(2rem, 1.1rem + 3.2vw, 4rem));
    font-weight: 800;
    letter-spacing: var(--tracking-tight);
    line-height: var(--lh-tight);
    text-transform: uppercase;
    color: var(--title-solid, var(--text));
}

.display-title__line {
    display: block;
}

.display-title__line--ghost {
    color: var(--title-ghost, var(--text-ghost));
}

/* --- Superfície clara: troca os tokens de texto dos componentes acima ------------- */
.surface-light {
    --eyebrow-color: var(--ink-3);
    --title-solid: var(--ink);
    --title-ghost: var(--ink-ghost);

    color: var(--ink);
    background: var(--co-paper);
    color-scheme: light;
}

.surface-light ::selection {
    color: var(--ink);
}

.surface-light :focus-visible {
    outline-color: var(--co-accent-text);
}

/* Botão fantasma no claro: contorno e texto em tinta, sem o vidro do escuro. */
.surface-light .btn--ghost {
    --btn-fg: var(--ink);
    --btn-border: var(--hairline-strong);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

@media (hover: hover) {
    .surface-light .btn--ghost:hover {
        --btn-bg: rgba(var(--co-ink-rgb), 0.04);
        --btn-border: rgba(var(--co-ink-rgb), 0.32);
    }
}

/* --- Reveal em cascata -------------------------------------------------------------
   Estado inicial só existe com JS ativo (html.js); sem JS tudo já está visível.
   A ordem de entrada vem de --reveal-delay definida por cada seção.
   ------------------------------------------------------------------------------------ */
html.js [data-reveal] {
    opacity: 0;
    transform: translate3d(0, 28px, 0);
    transition:
        opacity var(--dur-reveal) var(--ease-out-expo),
        transform var(--dur-reveal) var(--ease-out-expo);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
}

html.js .is-revealed [data-reveal],
html.js [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
}

/* Variante máscara (palavras fantasma): sobe como uma cortina, sem deslocar.
   Recuos laterais negativos porque, com tracking negativo, a tinta da última
   letra passa da caixa e uma máscara colada nela cortaria a letra. */
html.js [data-reveal="mask"] {
    transform: none;
    clip-path: inset(100% -0.25em -0.1em -0.25em);
    transition:
        opacity var(--dur-reveal) var(--ease-out-expo),
        clip-path 1400ms var(--ease-out-expo);
}

html.js [data-reveal="mask"].is-revealed {
    clip-path: inset(0% -0.25em -0.1em -0.25em);
}

@media (prefers-reduced-motion: reduce) {
    html.js [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }

    html.js [data-reveal="mask"] {
        clip-path: none;
    }
}