/* ============================================================
   PROTOCOL SECTION | css/protocol.css
   Paleta: Índigo (#6366F1) | Fundo Escuro (#06060c)
   Padrão: Sticky Stacking Split (inspirado no PriDias)
   ============================================================
   Índice:
   1. WRAPPER & BACKGROUND
   2. ANCHOR DIVIDER
   3. STICKY STACKING SCENE
   4. CONCEPT CARDS
   5. RESPONSIVE
   ============================================================ */


/* ────────────────────────────────────────────────────────────
   1. WRAPPER & BACKGROUND
   ──────────────────────────────────────────────────────────── */

#protocol-section {
    position: relative;
    background-color: var(--bg-main);
    z-index: 5;
    padding: 120px 0 80px;
    overflow: clip;
}


/* ────────────────────────────────────────────────────────────
   2. ANCHOR DIVIDER
   ──────────────────────────────────────────────────────────── */

.protocol-anchor {
    text-align: center;
    max-width: 740px;
    margin: 0 auto clamp(52px, 6vw, 88px);
    position: relative;
    z-index: 2;
}

/* Linha vertical índigo — separador visual fluido */
.protocol-divider {
    width: 2px;
    height: clamp(60px, 8vw, 120px);
    background: linear-gradient(to bottom, var(--primary), transparent);
    margin: 0 auto clamp(32px, 4vw, 56px);
    opacity: 0.55;
    border-radius: 2px;
}

.protocol-label {
    display: inline-block;
    font-family: var(--font-code);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 20px;
    padding: 6px 18px;
    border: 1px solid var(--card-border);
    border-radius: 3rem;
    background: var(--primary-glow);
}

.protocol-anchor .section-title {
    font-size: clamp(3.2rem, 5vw, 4.8rem);
    margin-bottom: 16px;
}

.protocol-anchor .section-subtitle {
    max-width: 600px;
}


/* ────────────────────────────────────────────────────────────
   3. STICKY STACKING SCENE
   ──────────────────────────────────────────────────────────── */

.protocol-scene {
    position: relative;
    z-index: 2;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Panel pinado pelo GSAP — ocupa 100vh visível */
.protocol-pin {
    height: 100vh;
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    align-items: center;
    gap: clamp(40px, 6vw, 100px);
    overflow: hidden;
}

/* Coluna esquerda: título e subtítulo fixos */
.protocol-pin__title {
    display: flex;
    flex-direction: column;
}

.protocol-concept__title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 4vw, 5.6rem);
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -2px;
    line-height: 1.06;
}

/* Linha índigo decorativa abaixo do título */
.protocol-concept__title::after {
    content: '';
    display: block;
    width: 52px;
    height: 3px;
    background: var(--primary);
    margin-top: 28px;
    border-radius: 2px;
    box-shadow: 0 0 12px var(--primary-glow-strong);
}

.protocol-concept__subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.3rem, 1.3vw, 1.6rem);
    color: var(--text-muted);
    margin-top: 20px;
    max-width: 280px;
    line-height: 1.6;
    letter-spacing: 0.2px;
}


/* ────────────────────────────────────────────────────────────
   4. CONCEPT CARDS
   ──────────────────────────────────────────────────────────── */

/* Slot da coluna direita: contém os 3 cards sobrepostos */
.protocol-pin__cards {
    position: relative;
    height: 72vh;
    display: flex;
    border-radius: 2.5rem;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/*
 * Cada card é posicionado absolutamente no slot.
 * Estado inicial (via GSAP): translateX(110%) — fora da tela à direita.
 */
.protocol-pin__card {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--card-border);
    border-radius: 2.5rem;
    box-shadow:
        0 4px 24px -1px rgba(0, 0, 0, 0.2),
        0 20px 48px -8px rgba(99, 102, 241, 0.08);
    will-change: transform;
    overflow: hidden;
}

/* Glow radial índigo no canto superior direito */
.protocol-pin__card::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, var(--primary-glow-strong) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* Garante que o conteúdo fica acima do glow */
.protocol-pin__card > * {
    position: relative;
    z-index: 1;
}

/* Layout split: imagem + conteúdo */
.protocol-card-split__image {
    width: 100%;
    height: 45%;
    overflow: hidden;
    flex-shrink: 0;
}

.protocol-card-split__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.protocol-pin__card:hover .protocol-card-split__image img {
    transform: scale(1.06);
}

.protocol-card-split__content {
    padding: clamp(24px, 4vw, 48px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
}

/* Número de série estilo Apple (01 / 02 / 03) */
.protocol-concept__num {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 1vw, 1.2rem);
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--primary);
    opacity: 0.85;
    margin-bottom: 16px;
    display: block;
}

/* Título do card */
.protocol-concept__title-sm {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 2.2vw, 2.8rem);
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
    line-height: 1.2;
}

/* Texto descritivo */
.protocol-concept__text {
    font-family: var(--font-heading);
    font-size: clamp(1.4rem, 1.5vw, 1.6rem);
    line-height: 1.7;
    color: var(--text-muted);
    margin: 0;
}

/* Linha índigo animada no base do card (hover) */
.protocol-pin__card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent) 50%, transparent);
    z-index: 3;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.protocol-pin__card:hover::after {
    transform: scaleX(1);
}


/* ────────────────────────────────────────────────────────────
   5. RESPONSIVE
   ──────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
    .protocol-pin {
        grid-template-columns: 1fr;
        height: auto;
        gap: 32px;
        padding: clamp(40px, 6vw, 80px) 0;
        overflow: visible;
    }

    .protocol-pin__title {
        text-align: center;
        align-items: center;
    }

    .protocol-concept__title::after {
        margin-left: auto;
        margin-right: auto;
    }

    .protocol-concept__subtitle {
        max-width: 100%;
        text-align: center;
    }

    .protocol-pin__cards {
        height: 60vh;
    }
}

@media (max-width: 768px) {
    #protocol-section {
        padding: 80px 0 60px;
    }

    .protocol-pin__cards {
        height: 55vh;
    }

    .protocol-concept__title {
        font-size: 3rem;
    }

    .protocol-card-split__image {
        height: 38%;
    }

    .protocol-card-split__content {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .protocol-pin__cards {
        height: 50vh;
        border-radius: 1.5rem;
    }

    .protocol-pin__card {
        border-radius: 1.5rem;
    }

    .protocol-concept__title {
        letter-spacing: -1.5px;
    }

    .protocol-divider {
        height: 60px;
    }

    .protocol-card-split__image {
        height: 35%;
    }
}