/* =========================================================================
   CITEM — IA Page: "Blockout Suizo" (Audited v2)
   Copy source: docs/copys/02_IA.md (v1.0)
   Página estrella WOW. Navy hero + showcases + mode cards + inline CTA.
   ========================================================================= */

/* =======================================================================
   S1: HERO — Navy, 60vh (esta es la página WOW), con CTA in-hero
   ======================================================================= */
.ia-hero {
    background-color: var(--c-navy);
    color: var(--c-cream);
    min-height: 60vh;
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    border-bottom: 5px solid var(--c-crimson);
}

.ia-kicker {
    font-size: 1rem;
    font-weight: 900;
    color: var(--c-cream);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
}

.ia-hero h1 {
    font-size: var(--text-hero);
    font-weight: 900;
    color: var(--c-cream);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-hero);
    line-height: 0.85;
}

.ia-hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 400;
    color: var(--c-cream);
    opacity: 0.85;
    max-width: 650px;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

/* CTA in hero */
.ia-hero-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

/* C2 fix: removed !important — specificity sufficient */
.ia-hero-btn {
    background-color: var(--c-cream);
    color: var(--c-navy);
    border: var(--border-weight) solid var(--c-navy);
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 900;
    text-transform: uppercase;
    border-radius: 0;
    box-shadow: 6px 6px 0 rgba(var(--c-cream-rgb), 0.15);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.ia-hero-btn:hover {
    transform: translate(3px, 3px);
    box-shadow: 3px 3px 0 rgba(var(--c-cream-rgb), 0.15);
    background-color: var(--c-white);
}

.ia-hero-cta .microcopy {
    font-size: 0.875rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.5;
}

/* =======================================================================
   S2: INTRO — Cream, with h2 + 2 paragraphs
   ======================================================================= */
.ia-intro {
    background-color: var(--c-cream);
    padding: var(--spacing-xl) 0;
    border-bottom: var(--border-weight) solid var(--c-navy);
}

.ia-intro h2 {
    color: var(--c-navy);
    margin-bottom: var(--spacing-md);
}

.ia-intro p {
    font-size: 1.35rem;
    line-height: 1.6;
    color: var(--c-black);  /* body text on cream = black */
    max-width: 750px;
    margin-bottom: var(--spacing-sm);
}

.ia-intro p:last-child {
    margin-bottom: 0;
}

.ia-intro p strong {
    color: var(--c-crimson);
}

/* =======================================================================
   S3/S4: FEATURE BLOCKS — Showcase sections (dark/light alternating)
   ======================================================================= */
.ia-feature {
    padding: var(--spacing-xl) 0;
}

.ia-feature.ia-feature--dark {
    background-color: var(--c-navy);
    color: var(--c-cream);
}

.ia-feature.ia-feature--light {
    background-color: var(--c-cream);
    color: var(--c-navy);
    border-bottom: var(--border-weight) solid var(--c-navy);
}

/* Feature header: icon + h2/intro */
.ia-feature-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .ia-feature-header {
        flex-direction: row;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
}

.ia-feature-icon {
    font-size: 2.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.ia-feature--dark h2 {
    color: var(--c-cream);  /* Big heading on dark = cream */
}

.ia-feature--light h2 {
    color: var(--c-navy);  /* Standard heading on light bg */
}

.ia-feature-intro {
    font-size: 1.25rem;
    line-height: 1.6;
    opacity: 0.85;
    max-width: 650px;
    margin-top: var(--spacing-xs);
}

/* --- Mode Cards Grid (Chat IA: 3 modes) --- */
.ia-modes-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .ia-modes-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.ia-mode-card {
    padding: var(--spacing-md);
    border: var(--border-weight) solid rgba(var(--c-cream-rgb), 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ia-mode-card:hover {
    transform: translate(-4px, -4px);
    box-shadow: 4px 4px 0 var(--c-crimson);
}

.ia-mode-card h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 900;
    text-transform: uppercase;
    color: var(--c-crimson);
    margin-bottom: var(--spacing-xs);
    line-height: 1;
    letter-spacing: -0.5px;
}

.ia-mode-card p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--c-cream);
    opacity: 0.8;
}

/* Feature highlight (closing line) */
.ia-feature-highlight {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 900;
    color: var(--c-crimson);
    max-width: 700px;
    line-height: 1.3;
    padding-top: var(--spacing-md);
    border-top: var(--border-weight) solid rgba(var(--c-cream-rgb), 0.15);
}

/* Feature detail + cross-link (Generador section) */
.ia-feature-detail {
    font-size: 1.25rem;
    line-height: 1.6;
    opacity: 0.85;
    max-width: 650px;
    margin-bottom: var(--spacing-sm);
}

.ia-cross-link {
    display: inline-flex;
    align-items: center;
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--c-crimson);
    padding: var(--spacing-xs) 0;
    border-bottom: 3px solid var(--c-crimson);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.ia-cross-link:hover {
    color: var(--c-navy);
    border-color: var(--c-navy);
}

/* =======================================================================
   S5: VISION — Navy bg, gold list items
   ======================================================================= */
.ia-vision {
    background-color: var(--c-navy);
    color: var(--c-cream);
    padding: var(--spacing-xl) 0;
    border-bottom: var(--border-weight) solid var(--c-crimson);
}

.ia-vision h2 {
    color: var(--c-cream);  /* Big heading on dark = cream */
    margin-bottom: var(--spacing-sm);
}

.ia-vision > .container > p {
    font-size: 1.25rem;
    color: var(--c-cream);
    opacity: 0.85;
    max-width: 700px;
}

.ia-vision-list {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

@media (min-width: 768px) {
    .ia-vision-list {
        flex-direction: row;
        gap: var(--spacing-md);
    }
}

.ia-vision-list li {
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--c-cream);
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--border-weight) solid rgba(var(--c-cream-rgb), 0.2);
    flex: 1;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ia-vision-list li:hover {
    transform: translate(-3px, -3px);
    box-shadow: 3px 3px 0 var(--c-crimson);
    border-color: var(--c-crimson);
    color: var(--c-crimson);
}

/* Vision closing statement */
.ia-vision-closing {
    font-size: 1.25rem;
    line-height: 1.5;
    max-width: 700px;
}

.ia-vision-closing strong {
    color: var(--c-crimson);
    font-size: clamp(1.5rem, 3vw, 2rem);
    display: block;
    margin-top: var(--spacing-xs);
    letter-spacing: -0.5px;
}

/* =======================================================================
   S6: CTA FINAL — Crimson bg, form inline, gold button
   ======================================================================= */
.ia-cta-section {
    background-color: var(--c-crimson);
    color: var(--c-cream);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.ia-cta-section h2 {
    color: var(--c-white);
}

.ia-cta-section > .container > p {
    font-size: 1.35rem;
    color: var(--c-cream);
    max-width: 600px;
    margin: 0 auto var(--spacing-sm);
    opacity: 0.95;
}

/* Form (reuses formaciones pattern — .cta-form, .form-row, .cta-submit-btn) */
.ia-cta-section .cta-form {
    max-width: 600px;
    margin: var(--spacing-md) auto var(--spacing-md);
}

.ia-cta-section .form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

@media (min-width: 768px) {
    .ia-cta-section .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.ia-cta-section .form-group {
    margin-bottom: 0;
}

.ia-cta-section input {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(var(--c-cream-rgb), 0.5);
    color: var(--c-cream);
    font-weight: 900;
}

.ia-cta-section input::placeholder {
    color: var(--c-cream);
    opacity: 0.6;
    font-weight: 400;
}

.ia-cta-section input:focus {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: var(--c-crimson);
}

/* C2 fix: removed !important — specificity sufficient */
.ia-cta-section .cta-submit-btn {
    width: 100%;
    margin-top: var(--spacing-sm);
    background-color: var(--c-cream);
    color: var(--c-navy);
    border: var(--border-weight) solid var(--c-navy);
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
    font-weight: 900;
    text-transform: uppercase;
    border-radius: 0;
    box-shadow: 8px 8px 0 var(--c-navy);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    cursor: pointer;
}

.ia-cta-section .cta-submit-btn:hover {
    transform: translate(4px, 4px);
    box-shadow: 4px 4px 0 var(--c-navy);
    background-color: var(--c-white);
}

.ia-cta-section .microcopy {
    margin-top: var(--spacing-md);
    font-size: 1rem;
    opacity: 0.8;
    text-transform: uppercase;
    font-weight: 900;
    letter-spacing: 2px;
}

/* =======================================================================
   RESPONSIVE
   ======================================================================= */
@media (max-width: 768px) {
    .ia-hero {
        min-height: 50vh;
        padding: var(--spacing-lg) 0 var(--spacing-md);
    }

    /* C1 fix: kicker letter-spacing reducido */
    .ia-kicker {
        letter-spacing: 0.5px;
        font-size: 0.75rem;
    }

    /* A1 fix: intro font-size reducido para evitar muro de texto */
    .ia-intro p {
        font-size: 1.125rem;
    }

    .ia-hero-btn {
        font-size: 1.25rem;
        padding: 1rem 2.5rem;
    }

    /* A2 fix: microcopy letter-spacing reducido */
    .ia-hero-cta .microcopy {
        letter-spacing: 1px;
    }

    .ia-feature-icon {
        font-size: 1.8rem;
    }

    /* A3 fix: vision list items — reducir padding en stack mobile */
    .ia-vision-list li {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    /* M1 fix: cross-link letter-spacing reducido */
    .ia-cross-link {
        letter-spacing: 1px;
    }

    /* A2 fix: CTA microcopy letter-spacing */
    .ia-cta-section .microcopy {
        letter-spacing: 1px;
    }

    .ia-cta-section .cta-submit-btn {
        font-size: 1.25rem;
        padding: 1.5rem 2rem;
        box-shadow: 6px 6px 0 var(--c-navy);
    }
}