:root {
    /* Brand tokens */
    --background: #0A0A0B;
    --foreground: #FAFAFA;
    --card: #111113;
    --popover: #0E0E10;
    --primary: #9D00FF;
    --primary-glow: #BB4DFF;
    --secondary: #1D1D20;
    --muted: #18181B;
    --muted-foreground: #94949E;
    --accent: #3C83F6;
    --accent-glow: #6DA2F8;
    --destructive: #EF4343;
    --border: #222225;
    --ring: #9D00FF;

    /* Shape & motion */
    --radius: 16px;
    --radius-lg: 22px;
    --transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    background: var(--background);
    color: var(--foreground);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overscroll-behavior: none;
}

body {
    position: relative;
    background-color: var(--background);
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 56px 56px;
    background-position: -1px -1px;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Ambient animated background */
.bg-ambient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.glow {
    position: absolute;
    width: 40vw;
    height: 40vw;
    min-width: 320px;
    min-height: 320px;
    border-radius: 50%;
    filter: blur(120px);
    will-change: transform, opacity;
}

.glow-purple {
    background: var(--primary);
    opacity: 0.4;
    top: -10%;
    left: 10%;
}

.glow-blue {
    background: var(--accent);
    opacity: 0.3;
    bottom: -10%;
    right: 10%;
}

.app {
    position: relative;
    z-index: 10;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 32px 20px 48px;
    background: transparent;
    overflow: hidden;
}

.step {
    position: relative;
    width: 100%;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* Every step starts hidden; only the active one is shown via JS or :first-of-type fallback */
.step + .step {
    display: none;
}

.brand {
    display: flex;
    justify-content: center;
    padding: 8px 0 16px;
}

.brand__logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--foreground);
}

.brand__dot {
    color: var(--primary);
    text-shadow: 0 0 12px rgba(157, 0, 255, 0.6);
}

.step__content {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.step__eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted-foreground);
}

.step__question {
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--foreground);
}

.options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-card {
    position: relative;
    display: grid;
    grid-template-columns: 44px 1fr;
    grid-template-rows: auto auto;
    gap: 4px 16px;
    align-items: start;
    width: 100%;
    padding: 20px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--foreground);
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    isolation: isolate;
    transition:
        background var(--transition),
        border-color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

/* Glow halo behind the card — fades in on hover/focus/selected */
.option-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, var(--primary), var(--primary-glow));
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
    z-index: 1;
}

.option-card:hover {
    background: var(--secondary);
    border-color: transparent;
    box-shadow: 0 8px 28px -12px rgba(157, 0, 255, 0.35);
}

.option-card:hover::before {
    opacity: 0.55;
}

.option-card:focus-visible {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 3px rgba(157, 0, 255, 0.25);
}

.option-card:focus-visible::before {
    opacity: 0.85;
}

.option-card:active {
    transform: scale(0.985);
}

.option-card[aria-checked="true"] {
    background: linear-gradient(180deg, rgba(157, 0, 255, 0.10), rgba(157, 0, 255, 0.02)), var(--card);
    border-color: transparent;
    box-shadow:
        0 0 0 1px var(--primary),
        0 12px 40px -12px rgba(157, 0, 255, 0.55),
        inset 0 1px 0 rgba(187, 77, 255, 0.15);
}

.option-card[aria-checked="true"]::before {
    opacity: 1;
}

.option-card__icon {
    grid-row: 1 / span 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(157, 0, 255, 0.18), rgba(187, 77, 255, 0.06));
    border: 1px solid rgba(157, 0, 255, 0.22);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    color: var(--primary-glow);
    transition:
        color var(--transition),
        border-color var(--transition),
        background var(--transition),
        transform var(--transition);
}

.option-card__icon i {
    font-size: 28px;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary-glow), var(--accent-glow));
    -webkit-background-clip: text;
            background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: drop-shadow(0 2px 8px rgba(157, 0, 255, 0.35));
}

.option-card:hover .option-card__icon,
.option-card:focus-visible .option-card__icon {
    background: linear-gradient(135deg, rgba(157, 0, 255, 0.28), rgba(187, 77, 255, 0.10));
    border-color: rgba(157, 0, 255, 0.45);
    transform: translateY(-1px);
}

.option-card[aria-checked="true"] .option-card__icon {
    background: linear-gradient(135deg, rgba(157, 0, 255, 0.35), rgba(187, 77, 255, 0.15));
    border-color: rgba(187, 77, 255, 0.55);
}

.option-card__title {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--foreground);
}

.option-card__desc {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    line-height: 1.4;
}

/* ========= Form components ========= */
.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.field__label {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--muted-foreground);
}

.field__hint {
    font-weight: 400;
    color: var(--muted-foreground);
    opacity: 0.7;
    margin-left: 4px;
}

.field__input {
    width: 100%;
    padding: 14px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--foreground);
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.4;
    transition:
        border-color var(--transition),
        background var(--transition),
        box-shadow var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.field__input::placeholder {
    color: var(--muted-foreground);
    opacity: 0.7;
}

.field__input:hover {
    border-color: rgba(157, 0, 255, 0.25);
}

.field__input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(157, 0, 255, 0.20);
    background: var(--popover);
}

.field__select {
    cursor: pointer;
    background-image:
        linear-gradient(45deg, transparent 50%, var(--muted-foreground) 50%),
        linear-gradient(135deg, var(--muted-foreground) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) 50%,
        calc(100% - 13px) 50%;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    padding-right: 40px;
}

.field__select option {
    background: var(--popover);
    color: var(--foreground);
}

/* Chips (toggle group) */
.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    padding: 10px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--foreground);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition:
        background var(--transition),
        border-color var(--transition),
        color var(--transition),
        box-shadow var(--transition);
}

.chip:hover {
    border-color: rgba(157, 0, 255, 0.45);
    color: var(--primary-glow);
}

.chip[aria-checked="true"] {
    background: linear-gradient(180deg, rgba(157, 0, 255, 0.18), rgba(157, 0, 255, 0.06)), var(--card);
    border-color: var(--primary);
    color: var(--foreground);
    box-shadow: 0 0 0 1px var(--primary), 0 8px 24px -10px rgba(157, 0, 255, 0.55);
}

.field__input--error {
    border-color: var(--destructive) !important;
    box-shadow: 0 0 0 3px rgba(239, 67, 67, 0.18) !important;
}

.form__error {
    font-size: 0.875rem;
    color: var(--destructive);
    margin-top: -4px;
}

/* Success screen — hidden by default; mostrarSucesso() promove para flex. */
.success {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 48px 8px;
    opacity: 0;
}

.success__icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--primary-glow), var(--primary));
    color: var(--foreground);
    font-size: 2rem;
    font-weight: 700;
    box-shadow: 0 18px 48px -12px rgba(157, 0, 255, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.success__title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--foreground);
}

.success__text {
    color: var(--muted-foreground);
    max-width: 380px;
}

/* Form actions / buttons */
.form__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 22px;
    border-radius: 12px;
    border: 1px solid transparent;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    cursor: pointer;
    transition:
        background var(--transition),
        border-color var(--transition),
        color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn--ghost {
    background: transparent;
    border-color: var(--border);
    color: var(--muted-foreground);
}

.btn--ghost:hover {
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--foreground);
}

.btn--primary {
    background: linear-gradient(180deg, var(--primary-glow), var(--primary));
    color: var(--foreground);
    box-shadow: 0 10px 28px -10px rgba(157, 0, 255, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    margin-left: auto;
}

.btn--primary:hover {
    box-shadow: 0 14px 36px -10px rgba(157, 0, 255, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    filter: brightness(1.08);
}

.btn--primary:focus-visible {
    outline: none;
    box-shadow: 0 10px 28px -10px rgba(157, 0, 255, 0.65), 0 0 0 3px rgba(157, 0, 255, 0.30);
}

@media (min-width: 640px) {
    .field-row {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 640px) {
    .app {
        padding: 64px 24px;
        align-items: center;
    }

    .option-card {
        padding: 22px 24px;
    }

    .option-card__title {
        font-size: 1.0625rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}