/* =========================================
   PRÉ-BRIEFING — dark premium, standalone
   Não carrega o CSS do scrollytelling: só tokens + form.
   ========================================= */
:root {
    /* estruturais */
    --bf-accent-deep: #30166d;
    --bf-radius: 18px;
    --bf-ease: cubic-bezier(0.16, 1, 0.3, 1);
    --bf-dur: 0.55s;
    /* TEMA CLARO (padrão) */
    --bf-bg: #f1ecfb;
    --bf-text: #1f0f66;
    --bf-muted: rgba(31, 15, 102, 0.62);
    --bf-faint: rgba(31, 15, 102, 0.40);
    --bf-accent: #5f1eae;
    --bf-card: rgba(48, 22, 109, 0.045);
    --bf-card-hover: rgba(48, 22, 109, 0.09);
    --bf-border: rgba(48, 22, 109, 0.14);
    --bf-input-text: #1f0f66;
    --bf-placeholder: rgba(31, 15, 102, 0.40);
    --bf-btn-bg: #1f0f66;
    --bf-btn-text: #ffffff;
    --bf-danger: #c2185b;
    --bf-menu-bg: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] {
    --bf-bg: #07070d;
    --bf-text: #ffffff;
    --bf-muted: rgba(255, 255, 255, 0.58);
    --bf-faint: rgba(255, 255, 255, 0.34);
    --bf-accent: #7c3aed;
    --bf-card: rgba(255, 255, 255, 0.045);
    --bf-card-hover: rgba(255, 255, 255, 0.08);
    --bf-border: rgba(255, 255, 255, 0.10);
    --bf-input-text: #ffffff;
    --bf-placeholder: rgba(255, 255, 255, 0.30);
    --bf-btn-bg: #ffffff;
    --bf-btn-text: #0a0a11;
    --bf-danger: #ff8da6;
    --bf-menu-bg: rgba(18, 16, 28, 0.92);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scrollbar-width: thin; scrollbar-color: var(--bf-accent) transparent; }

body {
    background: var(--bf-bg);
    color: var(--bf-text);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

/* ── Atmosfera (blobs + grão) ── */
.bf-atmos { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bf-blob { position: absolute; border-radius: 50%; filter: blur(90px); }
.bf-blob--1 {
    width: 46vmax; height: 46vmax; top: -18vmax; left: -12vmax;
    background: radial-gradient(circle, rgba(95, 30, 174, 0.16), transparent 70%);
}
.bf-blob--2 {
    width: 40vmax; height: 40vmax; bottom: -16vmax; right: -10vmax;
    background: radial-gradient(circle, rgba(48, 22, 109, 0.14), transparent 70%);
}
[data-theme="dark"] .bf-blob--1 { background: radial-gradient(circle, rgba(124, 58, 237, 0.42), transparent 70%); }
[data-theme="dark"] .bf-blob--2 { background: radial-gradient(circle, rgba(48, 22, 109, 0.55), transparent 70%); }
.bf-grain {
    position: fixed; inset: 0; z-index: 1; pointer-events: none;
    background-image: url('assets/img/ruido.webp');
    opacity: 0.05; mix-blend-mode: overlay;
}

/* ── Header ── */
.bf-header {
    position: relative;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.6rem clamp(1.25rem, 5vw, 4rem);
}
.bf-logo img { display: block; height: 30px; width: auto; }
.bf-back {
    font-family: 'Syne', sans-serif;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--bf-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.25s ease;
}
.bf-back:hover { color: #fff; }
.bf-back svg { transition: transform 0.25s ease; }
.bf-back:hover svg { transform: translateX(-3px); }

.bf-header-actions { display: flex; align-items: center; gap: 1.3rem; }
.theme-toggle {
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--bf-muted);
    line-height: 0;
    transition: transform 0.3s ease, color 0.25s ease;
}
.theme-toggle:hover { transform: rotate(-15deg) scale(1.1); color: var(--bf-text); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ── Shell do form ── */
.bf-main {
    position: relative;
    z-index: 5;
    min-height: calc(100dvh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2vh clamp(1.25rem, 5vw, 2rem) 8vh;
}
.bf-form {
    width: 100%;
    max-width: 640px;
}

/* ── Progresso ── */
.bf-progress {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: clamp(2rem, 5vh, 3.5rem);
}
.bf-progress__bar {
    flex: 1;
    height: 3px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.10);
    overflow: hidden;
}
.bf-progress__fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--bf-accent-deep), var(--bf-accent));
    transition: width var(--bf-dur) var(--bf-ease);
}
.bf-progress__count {
    font-family: 'Syne', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--bf-faint);
    white-space: nowrap;
}

/* ── Kicker da intro ── */
.bf-kicker {
    font-family: 'Syne', sans-serif;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--bf-accent);
    margin-bottom: 14px;
}

/* ── Steps ── */
.bf-step { display: none; }
.bf-step.is-active { display: block; }
.bf-step.is-active .bf-anim {
    animation: bf-rise var(--bf-dur) var(--bf-ease) both;
}
@keyframes bf-rise {
    from { opacity: 0; transform: translateY(16px); filter: blur(6px); }
    to   { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.bf-q {
    font-family: 'Syne', sans-serif;
    font-weight: 500;
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}
.bf-help {
    font-size: 14px;
    color: var(--bf-muted);
    margin-bottom: clamp(1.5rem, 4vh, 2.5rem);
    line-height: 1.5;
}

/* ── Inputs de texto ── */
.bf-fields { display: flex; flex-direction: column; gap: 16px; }
.bf-field label {
    display: block;
    font-family: 'Syne', sans-serif;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bf-faint);
    margin-bottom: 8px;
}
.bf-input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--bf-border);
    background: var(--bf-card);
    color: var(--bf-input-text);
    font-family: 'Syne', sans-serif;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.01em;
    transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.bf-input::placeholder { color: var(--bf-placeholder); }
.bf-input:focus {
    outline: none;
    border-color: var(--bf-accent);
    background: var(--bf-card-hover);
    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.14);
}

/* ── Cards de opção ── */
.bf-options { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
.bf-options--single { grid-template-columns: 1fr; }
.bf-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 18px 20px;
    border-radius: var(--bf-radius);
    border: 1px solid var(--bf-border);
    background: var(--bf-card);
    color: var(--bf-text);
    font-family: 'Syne', sans-serif;
    font-size: clamp(15px, 1.6vw, 17px);
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}
.bf-option:hover {
    background: var(--bf-card-hover);
    border-color: rgba(255, 255, 255, 0.22);
    transform: translateY(-2px);
}
.bf-option__check {
    flex-shrink: 0;
    width: 20px; height: 20px;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    display: grid;
    place-items: center;
    transition: border-color 0.2s ease, background 0.2s ease;
}
.bf-option__check svg { opacity: 0; transform: scale(0.5); transition: opacity 0.2s ease, transform 0.2s ease; }
.bf-option.is-selected {
    border-color: var(--bf-accent);
    background: rgba(124, 58, 237, 0.14);
    box-shadow: 0 0 0 1px var(--bf-accent), 0 10px 30px rgba(124, 58, 237, 0.18);
}
.bf-option.is-selected .bf-option__check { border-color: var(--bf-accent); background: var(--bf-accent); }
.bf-option.is-selected .bf-option__check svg { opacity: 1; transform: scale(1); }

/* ── Erro de validação ── */
.bf-error-msg {
    min-height: 18px;
    font-size: 13px;
    color: var(--bf-danger);
    margin-top: 14px;
}

/* ── Navegação ── */
.bf-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: clamp(1.75rem, 4vh, 2.5rem);
}
.bf-btn {
    font-family: 'Syne', sans-serif;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 15px 30px;
    border-radius: 40px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.25s ease, background 0.25s ease, opacity 0.25s ease, border-color 0.25s ease;
}
.bf-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.bf-btn--primary { background: var(--bf-btn-bg); color: var(--bf-btn-text); margin-left: auto; }
.bf-btn--primary:not(:disabled):hover { transform: translateY(-3px); }
.bf-btn--ghost { background: transparent; border-color: rgba(255, 255, 255, 0.2); color: rgba(255, 255, 255, 0.8); }
.bf-btn--ghost:hover { border-color: rgba(255, 255, 255, 0.5); color: #fff; }
.bf-btn--hidden { visibility: hidden; }

/* ── Honeypot (anti-spam) ── */
.bf-hp {
    position: absolute !important;
    left: -9999px !important;
    width: 1px; height: 1px;
    overflow: hidden;
    opacity: 0;
}

/* ── Painel de sucesso / erro ── */
.bf-result { display: none; text-align: center; padding: 4vh 0; }
.bf-result.is-active { display: block; animation: bf-rise var(--bf-dur) var(--bf-ease) both; }
.bf-result__icon {
    width: 64px; height: 64px;
    margin: 0 auto 28px;
    border-radius: 50%;
    display: grid; place-items: center;
    background: rgba(124, 58, 237, 0.16);
    border: 1px solid var(--bf-accent);
}
.bf-result__title {
    font-family: 'Syne', sans-serif;
    font-weight: 500;
    font-size: clamp(28px, 5vw, 42px);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
}
.bf-result__msg { color: var(--bf-muted); font-size: 16px; line-height: 1.6; max-width: 440px; margin: 0 auto 28px; }
.bf-result__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.bf-result__actions a { text-decoration: none; }

/* ── Seletor de idioma (mesma linguagem do site) ── */
.lang-switch { position: fixed; bottom: 1.6rem; left: 1.6rem; z-index: 50; font-family: 'Syne', sans-serif; }
.lang-switch__toggle {
    display: flex; align-items: center; gap: 7px;
    height: 36px; padding: 0 13px;
    border-radius: 999px;
    border: 1px solid var(--bf-border);
    background: var(--bf-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--bf-text); cursor: pointer;
    font: inherit; font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
    transition: background 0.25s ease, transform 0.2s ease, border-color 0.25s ease;
}
.lang-switch__toggle:hover { background: var(--bf-card-hover); border-color: var(--bf-border); transform: translateY(-2px); }
.lang-switch__globe { display: block; flex-shrink: 0; opacity: 0.85; }
.lang-switch__menu {
    position: absolute; bottom: calc(100% + 10px); left: 0;
    min-width: 156px; list-style: none; margin: 0; padding: 6px;
    border-radius: 16px; border: 1px solid var(--bf-border);
    background: var(--bf-menu-bg);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5);
    opacity: 0; transform: translateY(8px) scale(0.97); transform-origin: bottom left;
    pointer-events: none; transition: opacity 0.25s ease, transform 0.25s var(--bf-ease);
}
.lang-switch[data-open="true"] .lang-switch__menu { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.lang-switch__option {
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    width: 100%; padding: 9px 12px; border: none; border-radius: 11px;
    background: transparent; color: var(--bf-muted);
    font: inherit; font-size: 13px; font-weight: 500; text-align: left; cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.lang-switch__option:hover { background: var(--bf-card-hover); color: var(--bf-text); }
.lang-switch__option[aria-current="true"] { color: var(--bf-text); font-weight: 700; }
.lang-switch__option[aria-current="true"]::after { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--bf-accent); flex-shrink: 0; }

/* ── Responsivo ── */
@media (max-width: 560px) {
    .bf-options { grid-template-columns: 1fr; }
    .bf-nav { flex-direction: column-reverse; align-items: stretch; }
    .bf-btn--primary { margin-left: 0; }
    .bf-btn { width: 100%; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    .bf-step.is-active .bf-anim,
    .bf-result.is-active { animation: none; }
    .bf-progress__fill { transition: none; }
}