/* IGRTEC — identidad corporativa alineada a igrtec.com */
:root {
    --igr-black: #000000;
    --igr-white: #ffffff;
    --igr-blue-primary: #1545b1;
    --igr-blue-secondary: #0b7ebd;
    --igr-dark-blue: #02264c;
    --igr-footer-blue: #0b3c78;
    --igr-dark-gray: #4c4c4c;
    --igr-beige: #f2f2f2;
    --igr-gray: #f8f8f8;
    --igr-border: #1545b14d;
    --igr-gradient-text: linear-gradient(270deg, #0b7ebd 0%, #1545b1 100%);
    --igr-gradient-title: linear-gradient(120deg, #063f8f 0%, #0b7ebd 48%, #1545b1 100%);
    --igr-font: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    --igr-radius: 14px;
    --igr-radius-lg: 18px;
    --igr-shadow: 0 10px 22px rgba(0, 0, 0, 0.08);
    --igr-shadow-card: 0 22px 55px rgba(2, 38, 76, 0.08);
    --igr-perspective: 1100px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 14px; }

@media (min-width: 768px) {
    html { font-size: 16px; }
}

body {
    font-family: var(--igr-font);
    color: var(--igr-black);
    background: var(--igr-white);
    line-height: 1.6;
    margin: 0;
}

/* ── Header / Nav (blanco como igrtec.com) ── */
.igr-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1030;
}

.igr-header.is-scrolled .igr-navbar {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.igr-navbar {
    background: var(--igr-white) !important;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    padding: 0.5rem 0;
}

.igr-navbar-inner {
    padding-inline: clamp(1rem, 4vw, 3rem);
}

.igr-logo-nav {
    width: 150px;
    object-fit: contain;
}

.igr-nav-links {
    gap: 1.5rem;
    align-items: center;
}

.igr-nav-links .nav-link {
    color: var(--igr-black) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.35rem 0 !important;
}

.igr-nav-links .nav-link:hover {
    color: var(--igr-blue-primary) !important;
}

.igr-btn-nav {
    background: var(--igr-black) !important;
    color: var(--igr-white) !important;
    padding: 10px 23px !important;
    border-radius: var(--igr-radius);
    font-weight: 700 !important;
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.16);
    transition: transform 0.25s, background 0.25s, box-shadow 0.25s;
}

.igr-btn-nav:hover {
    background: var(--igr-dark-blue) !important;
    color: var(--igr-white) !important;
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.24);
}

/* ── Botones corporativos ── */
.igr-btn-outline {
    color: var(--igr-blue-primary);
    border: 2px solid var(--igr-blue-primary);
    border-radius: 10px;
    padding: 10px 28px;
    font-size: 0.9rem;
    font-weight: 700;
    background: transparent;
    transition: background 0.2s, color 0.2s;
}

.igr-btn-outline:hover {
    background: var(--igr-blue-primary);
    color: var(--igr-white);
}

/* ── Tipografía corporativa ── */
.igr-title-gradient {
    background: var(--igr-gradient-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    font-size: clamp(1.75rem, 3.5vw, 2.25rem);
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    transform: none;
    transform-style: flat;
}

.igr-subtitle-gradient {
    background: var(--igr-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
}

.igr-kicker {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--igr-blue-secondary);
    margin-bottom: 0.75rem;
}

.igr-kicker--light { color: #7dd3fc; }

/* ── Hero (fondo blanco + watermark sutil) ── */
.igr-hero {
    position: relative;
    padding: 7rem 0 4rem;
    background: var(--igr-white);
    overflow: hidden;
}

.igr-hero-watermark {
    position: absolute;
    left: -26%;
    top: 90px;
    width: 42%;
    height: 104vh;
    object-fit: cover;
    opacity: 0.045;
    z-index: 0;
    pointer-events: none;
}

.igr-hero .container { position: relative; z-index: 1; }

.igr-hero-title {
    font-size: clamp(2rem, 4.5vw, 2.75rem);
    font-weight: 600;
    line-height: 1.15;
    color: var(--igr-black);
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.igr-hero-title span {
    color: var(--igr-blue-secondary);
}

.igr-hero-lead {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--igr-dark-gray);
    max-width: 520px;
    margin-bottom: 1.5rem;
}

.igr-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

@media (min-width: 992px) {
    .igr-hero-actions { justify-content: flex-start; }
}

.igr-hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--igr-beige);
}

@media (min-width: 576px) {
    .igr-hero-stats { grid-template-columns: repeat(4, 1fr); }
}

.igr-hero-stat strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--igr-blue-primary);
}

.igr-hero-stat span {
    font-size: 0.72rem;
    color: var(--igr-dark-gray);
    line-height: 1.3;
    display: block;
}

/* ── Browser frame (sobre fondo claro) ── */
.igr-browser {
    background: var(--igr-white);
    border: 1px solid var(--igr-border);
    border-radius: var(--igr-radius-lg);
    box-shadow: var(--igr-shadow-card);
    overflow: hidden;
}

.igr-browser__chrome {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.65rem 1rem;
    background: var(--igr-gray);
    border-bottom: 1px solid var(--igr-beige);
    min-height: 42px;
}

.igr-browser__chrome span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    flex-shrink: 0;
    background: #ccc;
}

.igr-browser__chrome span:nth-child(1) { background: #ff5f57; }
.igr-browser__chrome span:nth-child(2) { background: #febc2e; }
.igr-browser__chrome span:nth-child(3) { background: #28c840; }

.igr-browser__chrome small {
    margin-left: auto;
    font-size: 0.7rem;
    color: var(--igr-dark-gray);
    font-weight: 600;
}

.igr-browser__tabs {
    display: flex;
    gap: 4px;
    margin-left: 0.5rem;
    overflow-x: auto;
    flex: 1;
}

.igr-browser__tab {
    background: var(--igr-white);
    border: 1px solid var(--igr-beige);
    color: var(--igr-dark-gray);
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    white-space: nowrap;
    cursor: pointer;
}

.igr-browser__tab.is-active {
    background: var(--igr-blue-primary);
    border-color: var(--igr-blue-primary);
    color: var(--igr-white);
}

.igr-browser__viewport {
    position: relative;
    aspect-ratio: 16 / 10;
    background: var(--igr-beige);
    overflow: hidden;
}

.igr-browser__shot {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top left;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.igr-browser__shot.is-active { opacity: 1; z-index: 1; }

.igr-browser--lg .igr-browser__viewport { aspect-ratio: 16 / 9; }

/* ── Logo strip ── */
.igr-logo-strip {
    padding: 2rem 0;
    background: var(--igr-gray);
    border-top: 1px solid var(--igr-beige);
    border-bottom: 1px solid var(--igr-beige);
}

.igr-logo-strip__label {
    text-align: center;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--igr-dark-gray);
    margin-bottom: 1rem;
}

.igr-logo-strip__track {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
}

.igr-logo-chip {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.45rem 1rem 0.45rem 0.45rem;
    background: var(--igr-white);
    border: 1px solid var(--igr-border);
    border-radius: 999px;
    text-decoration: none;
    color: var(--igr-black);
    font-size: 0.82rem;
    font-weight: 600;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.igr-logo-chip:hover {
    box-shadow: var(--igr-shadow);
    border-color: var(--igr-blue-primary);
    color: var(--igr-black);
}

.igr-logo-chip img {
    width: 48px;
    height: 32px;
    object-fit: contain;
    object-position: left center;
    border-radius: 4px;
}

/* ── Sections ── */
.igr-section { padding: 4.5rem 0; }
.igr-section--gray { background: var(--igr-gray); }

.igr-section-head { max-width: 680px; }
.igr-lead-text { color: var(--igr-dark-gray); font-size: 1rem; margin-bottom: 1.25rem; }

/* ── Suite nav ── */
.igr-suite-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.igr-suite-nav__item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 1rem;
    background: var(--igr-white);
    border: 2px solid var(--igr-blue-primary);
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--igr-blue-primary);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.igr-suite-nav__item:hover {
    background: var(--igr-blue-primary);
    color: var(--igr-white);
}

/* ── Suite blocks ── */
.igr-suite-block {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    padding: 2rem;
    margin-bottom: 1.5rem;
    background: var(--igr-white);
    border: 1px solid var(--igr-border);
    border-radius: var(--igr-radius-lg);
    box-shadow: var(--igr-shadow-card);
}

@media (min-width: 992px) {
    .igr-suite-block {
        grid-template-columns: 1fr 1.1fr;
        gap: 2.5rem;
        padding: 2.5rem;
    }

    .igr-suite-block--reverse .igr-suite-block__info { order: 2; }
    .igr-suite-block--reverse .igr-suite-block__visual { order: 1; }
}

.igr-suite-block__logo {
    max-height: 52px;
    max-width: 200px;
    object-fit: contain;
    object-position: left center;
}

.igr-suite-block__marca {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--igr-blue-secondary);
    margin-bottom: 0.25rem;
}

.igr-suite-block h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--igr-black);
    margin-bottom: 0.2rem;
}

.igr-suite-block__sub {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--igr-blue-primary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.75rem;
}

.igr-suite-block__desc {
    font-size: 0.92rem;
    color: var(--igr-dark-gray);
    margin-bottom: 1rem;
}

.igr-module-grid {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.3rem 0.5rem;
}

.igr-module-grid li {
    font-size: 0.82rem;
    color: var(--igr-black);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.igr-module-grid i {
    color: var(--igr-blue-secondary);
    font-size: 0.9rem;
}

.igr-suite-block__benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--igr-beige);
}

.igr-suite-block__benefits span {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--igr-white);
    background: var(--igr-blue-secondary);
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
}

/* Thumbnails */
.igr-thumb-row {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.65rem;
    overflow-x: auto;
}

.igr-thumb {
    flex: 0 0 auto;
    width: 96px;
    background: var(--igr-white);
    border: 2px solid var(--igr-beige);
    border-radius: 8px;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
}

.igr-thumb.is-active,
.igr-thumb:hover {
    border-color: var(--igr-blue-primary);
}

.igr-thumb img {
    width: 100%;
    height: 52px;
    object-fit: cover;
    object-position: top left;
    display: block;
}

.igr-thumb span {
    display: block;
    font-size: 0.58rem;
    font-weight: 600;
    padding: 0.2rem 0.3rem;
    color: var(--igr-dark-gray);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Mosaic ── */
.igr-mosaic {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.igr-mosaic__item {
    position: relative;
    border-radius: var(--igr-radius);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    border: 1px solid var(--igr-border);
    box-shadow: var(--igr-shadow);
    text-decoration: none;
    transform-style: preserve-3d;
}

.igr-mosaic__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top left;
    transition: transform 0.35s;
}

.igr-mosaic__item:hover img { transform: scale(1.03); }

.igr-mosaic__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2, 38, 76, 0.88) 0%, transparent 55%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.25s;
}

.igr-mosaic__item:hover .igr-mosaic__overlay { opacity: 1; }

.igr-mosaic__product {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #7dd3fc;
}

.igr-mosaic__overlay strong {
    color: var(--igr-white);
    font-size: 0.9rem;
}

/* ── Info cards (estilo card-info igrtec) ── */
.igr-info-card {
    background: var(--igr-blue-secondary);
    color: var(--igr-white);
    border-radius: 32px;
    padding: 1.25rem 1.5rem;
    height: 100%;
    text-align: left;
}

.igr-info-card--center { text-align: center; }

.igr-info-card__num {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 800;
    opacity: 0.75;
    margin-bottom: 0.35rem;
}

.igr-info-card__icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: block;
}

.igr-info-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.igr-info-card p {
    font-size: 0.85rem;
    margin: 0;
    opacity: 0.92;
    line-height: 1.45;
}

.igr-check-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.igr-check-list li {
    padding: 0.45rem 0 0.45rem 1.5rem;
    position: relative;
    font-weight: 500;
    color: var(--igr-black);
}

.igr-check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--igr-blue-secondary);
    font-weight: 700;
}

/* ── Tech badges ── */
.igr-tech-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    max-width: 860px;
    margin: 0 auto;
}

.igr-tech-badge {
    padding: 0.5rem 1.1rem;
    background: var(--igr-white);
    border: 2px solid var(--igr-blue-primary);
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--igr-blue-primary);
}

/* ── Authority CTA (como igrtec.com SLA) ── */
.igr-authority {
    background: linear-gradient(135deg, #06152d 0%, var(--igr-footer-blue) 100%);
    color: var(--igr-white);
    padding: 4rem 0;
}

.igr-authority h2 {
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 0.75rem;
}

.igr-authority p {
    opacity: 0.9;
    margin: 0;
    max-width: 560px;
}

.igr-authority-cta {
    display: inline-block;
    background: var(--igr-white);
    color: var(--igr-footer-blue);
    border-radius: var(--igr-radius);
    padding: 14px 26px;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.24);
    transition: transform 0.25s, box-shadow 0.25s;
}

.igr-authority-cta:hover {
    color: var(--igr-dark-blue);
    transform: translateY(-3px);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.32);
}

.igr-authority-cta--outline {
    background: transparent;
    color: var(--igr-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
    box-shadow: none;
}

.igr-authority-cta--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--igr-white);
}

/* ── Footer (igrtec.com) ── */
.igr-footer {
    background: var(--igr-footer-blue);
    color: var(--igr-white);
    padding: 40px 20px;
    border-top-left-radius: 120px;
}

.igr-footer .container { max-width: 1100px; }

.igr-footer-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.65rem;
}

.igr-footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.igr-footer-links li { margin-bottom: 0.4rem; }

.igr-footer-links a,
.igr-footer-contact a {
    color: var(--igr-white);
    text-decoration: none;
    font-size: 0.875rem;
}

.igr-footer-links a:hover,
.igr-footer-contact a:hover { color: #9dc4ff; }

.igr-footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.igr-footer-contact i {
    color: #2fc0ff;
    margin-top: 3px;
}

.igr-footer-social {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.igr-footer-social a {
    color: var(--igr-white);
    font-size: 1.15rem;
}

.igr-footer-social a:hover { color: #2fc0ff; }

.igr-footer-copy {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.8rem;
    opacity: 0.75;
    text-align: center;
    margin-bottom: 0;
}

/* ── Scroll reveal (sutil) ── */
.igr-3d-section__panel { /* sin losas flotantes */ }

.igr-3d-tilt {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.igr-3d-tilt:hover {
    transform: translateY(-3px);
    box-shadow: var(--igr-shadow-card);
}

.igr-mosaic__item.igr-3d-tilt:hover {
    transform: translateY(-4px);
}

.igr-reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.igr-reveal.is-visible {
    opacity: 1;
    transform: none;
}

.igr-3d-section::before { display: none; }

@media (prefers-reduced-motion: reduce) {
    .igr-reveal { transform: none !important; }
}

/* ── Book catalog (paginated, minimal scroll) ── */
.igr-book-section {
    position: relative;
    min-height: auto;
    padding: 3rem 0 3rem;
    background: var(--igr-gray);
    overflow: hidden;
}

.igr-book-section .container { position: relative; z-index: 1; }

.igr-book-header { margin-bottom: 1.5rem; }

.igr-book {
    max-width: 1100px;
    margin: 0 auto;
}

.igr-book__stage {
    position: relative;
    min-height: clamp(420px, 58vh, 560px);
    padding: 1rem 0 2rem;
}

.igr-book-scene {
    position: relative;
    perspective: 2200px;
    perspective-origin: 50% 35%;
    transform-style: preserve-3d;
}

.igr-book-shadow {
    position: absolute;
    left: 8%;
    right: 8%;
    bottom: -18px;
    height: 36px;
    background: radial-gradient(ellipse at center, rgba(2, 38, 76, 0.22) 0%, transparent 72%);
    filter: blur(6px);
    pointer-events: none;
    z-index: 0;
}

.igr-book-pages {
    position: relative;
    min-height: clamp(420px, 58vh, 560px);
    transform-style: preserve-3d;
    transform: rotateX(5deg);
    transition: transform 0.6s ease;
}

.igr-book-scene.is-flipping .igr-book-pages {
    transform: rotateX(4deg) scale(0.995);
}

.igr-book-spread {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    z-index: 1;
}

.igr-book-spread.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    z-index: 2;
}

.igr-book-spread.is-under {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.igr-book-spread.is-hidden-during-flip {
    visibility: hidden;
}

@media (min-width: 768px) {
    .igr-book-spread {
        grid-template-columns: 1fr 1fr;
        gap: 0;
        border-radius: var(--igr-radius-lg);
        box-shadow:
            0 28px 60px rgba(2, 38, 76, 0.14),
            0 8px 24px rgba(2, 38, 76, 0.08),
            inset 0 0 0 1px rgba(255, 255, 255, 0.6);
        background: var(--igr-white);
    }

    .igr-book-spread__page--text {
        border-right: 1px solid rgba(21, 69, 177, 0.08);
    }
}

.igr-book-flip {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20;
    transform-style: preserve-3d;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
}

.igr-book-flip.is-visible {
    opacity: 1;
    visibility: visible;
}

.igr-book-flip--forward {
    transform-origin: left center;
}

.igr-book-flip--backward {
    transform-origin: right center;
}

.igr-book-flip__sheet {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.95s cubic-bezier(0.45, 0.05, 0.25, 0.95);
    will-change: transform;
}

.igr-book-flip--forward.is-turning .igr-book-flip__sheet {
    transform: rotateY(-180deg);
}

.igr-book-flip--backward.is-turning .igr-book-flip__sheet {
    transform: rotateY(180deg);
}

.igr-book-flip__face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    overflow: hidden;
    background: var(--igr-white);
    border-radius: var(--igr-radius-lg);
    box-shadow:
        0 28px 60px rgba(2, 38, 76, 0.16),
        0 8px 24px rgba(2, 38, 76, 0.1);
}

.igr-book-flip__face--back {
    transform: rotateY(180deg);
}

.igr-book-flip__face .igr-book-spread__page {
    min-height: 100%;
    height: 100%;
}

.igr-book-flip__face .igr-book-spread__page--visual {
    background: linear-gradient(145deg, #f0f4fa 0%, var(--igr-gray) 100%);
}

.igr-book-flip-spread {
    display: grid;
    grid-template-columns: 1fr;
    height: 100%;
    width: 100%;
    background: var(--igr-white);
}

@media (min-width: 768px) {
    .igr-book-flip-spread {
        grid-template-columns: 1fr 1fr;
    }

    .igr-book-flip-spread .igr-book-spread__page:first-child {
        border-right: 1px solid rgba(21, 69, 177, 0.08);
    }
}

.igr-book-flip-spread .igr-book-spread__page {
    overflow-y: auto;
}

.igr-book-spine {
    position: absolute;
    left: 50%;
    top: 2%;
    bottom: 2%;
    width: 16px;
    transform: translateX(-50%) translateZ(12px);
    background: linear-gradient(90deg, #b8c2d4 0%, #eef2f8 35%, #fff 50%, #eef2f8 65%, #b8c2d4 100%);
    border-radius: 2px;
    box-shadow: 0 0 12px rgba(2, 38, 76, 0.15);
    z-index: 15;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.igr-book-scene.is-flipping .igr-book-spine {
    opacity: 0;
}

@media (max-width: 767.98px) {
    .igr-book-pages { transform: none; }
    .igr-book-spine { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .igr-book-flip__sheet { transition-duration: 0.01ms !important; }
    .igr-book-pages { transform: none !important; }
}

.igr-book-spread__page {
    padding: clamp(1.25rem, 3vw, 2rem);
    display: flex;
    flex-direction: column;
    min-height: clamp(380px, 52vh, 520px);
}

.igr-book-spread__page--visual {
    background: linear-gradient(145deg, #f0f4fa 0%, var(--igr-gray) 100%);
    justify-content: center;
    align-items: center;
}

.igr-book-spread__page--cta {
    background: linear-gradient(145deg, var(--igr-dark-blue) 0%, var(--igr-footer-blue) 100%);
}

.igr-book-page-num {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--igr-blue-secondary);
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

.igr-book-spread__logo {
    width: 120px;
    margin-bottom: 0.75rem;
    border-radius: 8px;
}

.igr-book-spread__icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(21, 69, 177, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.igr-book-spread h3 {
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 700;
    color: var(--igr-dark-blue);
    margin-bottom: 0.35rem;
    line-height: 1.2;
}

.igr-book-spread__sub {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--igr-blue-secondary);
    margin-bottom: 0.65rem;
}

.igr-book-spread__desc {
    font-size: 0.88rem;
    color: var(--igr-dark-gray);
    line-height: 1.55;
    margin-bottom: 1rem;
}

.igr-book-modules {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem 0.75rem;
    font-size: 0.78rem;
    color: var(--igr-dark-gray);
}

.igr-book-modules li::before {
    content: "▸";
    color: var(--igr-blue-primary);
    margin-right: 0.35rem;
}

.igr-book-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: auto;
}

.igr-book-benefits span {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: rgba(21, 69, 177, 0.08);
    color: var(--igr-blue-primary);
}

/* Cover page */
.igr-book-cover {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.igr-book-cover__logo {
    width: 140px;
    margin-bottom: 1rem;
}

.igr-book-cover h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--igr-dark-blue);
    margin-bottom: 0.35rem;
}

.igr-book-cover > p {
    color: var(--igr-dark-gray);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.igr-book-cover__list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    font-size: 0.82rem;
}

.igr-book-cover__list li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--igr-dark-gray);
}

.igr-book-cover__list i { color: var(--igr-blue-primary); }

.igr-book-cover__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--igr-beige);
}

.igr-book-cover__stats strong {
    display: block;
    font-size: 1.25rem;
    color: var(--igr-blue-primary);
}

.igr-book-cover__stats span {
    font-size: 0.68rem;
    color: var(--igr-dark-gray);
}

/* Visual panels */
.igr-book-visual {
    position: relative;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.igr-book-visual img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--igr-radius);
}

.igr-book-visual--ref img {
    box-shadow: 0 20px 50px rgba(2, 38, 76, 0.12);
}

.igr-book-visual--ui {
    background: var(--igr-white);
    border-radius: var(--igr-radius);
    padding: 0.5rem;
    box-shadow: var(--igr-shadow);
}

.igr-book-visual--ui img {
    border-radius: calc(var(--igr-radius) - 4px);
}

.igr-book-visual__label {
    display: block;
    text-align: center;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--igr-dark-gray);
    margin-top: 0.5rem;
}

.igr-ref-tags {
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
    width: 110%;
}

.igr-ref-tags span {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: var(--igr-white);
    color: var(--igr-dark-blue);
    box-shadow: 0 6px 18px rgba(2, 38, 76, 0.12);
    white-space: nowrap;
}

.igr-ref-tags i { color: var(--igr-blue-secondary); margin-right: 0.2rem; }

.igr-book-cta {
    text-align: center;
    color: var(--igr-white);
    padding: 1rem;
}

.igr-book-cta h3 {
    color: var(--igr-white);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.igr-book-cta p {
    font-size: 0.9rem;
    opacity: 0.85;
    margin-bottom: 1.25rem;
}

/* Controls */
.igr-book__controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1rem;
    margin-top: 1.25rem;
    padding: 0.75rem;
}

.igr-book-btn {
    border: 1px solid var(--igr-border);
    background: var(--igr-white);
    color: var(--igr-dark-blue);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.igr-book-btn:hover:not(:disabled) {
    background: rgba(21, 69, 177, 0.06);
    border-color: var(--igr-blue-primary);
}

.igr-book-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.igr-book-btn--primary {
    background: var(--igr-blue-primary);
    border-color: var(--igr-blue-primary);
    color: var(--igr-white);
}

.igr-book-btn--primary:hover:not(:disabled) {
    background: var(--igr-dark-blue);
    border-color: var(--igr-dark-blue);
}

.igr-book__dots {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    justify-content: center;
}

.igr-book-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: var(--igr-beige);
    padding: 0;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}

.igr-book-dot.is-active {
    background: var(--igr-blue-primary);
    transform: scale(1.25);
}

.igr-book__counter {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--igr-dark-gray);
    min-width: 4rem;
    text-align: center;
}

.igr-book-chapters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
    margin-top: 0.75rem;
}

.igr-book-chapter {
    border: 1px solid transparent;
    background: var(--igr-white);
    color: var(--igr-dark-gray);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s;
}

.igr-book-chapter:hover,
.igr-book-chapter.is-active {
    color: var(--igr-blue-primary);
    border-color: var(--igr-border);
    background: rgba(21, 69, 177, 0.06);
}

.igr-book-chapter i { margin-right: 0.25rem; }

.igr-tech-grid--compact {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem;
}

/* ── Intro hero ── */
.igr-intro {
    padding-top: 6.5rem;
    background: var(--igr-white);
}

.igr-3d-hero-text { /* sin profundidad extra */ }

.igr-intro-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.igr-intro-stat {
    background: var(--igr-gray);
    border-radius: var(--igr-radius-lg);
    padding: 1.25rem;
    text-align: center;
    border: 1px solid var(--igr-border);
}

.igr-intro-stat strong {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--igr-blue-primary);
    line-height: 1.1;
}

.igr-intro-stat span {
    font-size: 0.72rem;
    color: var(--igr-dark-gray);
    line-height: 1.3;
}

.igr-btn-outline {
    border-color: var(--igr-blue-primary) !important;
    color: var(--igr-blue-primary) !important;
    font-weight: 600;
    border-radius: 10px;
}

.igr-btn-outline:hover {
    background: var(--igr-blue-primary) !important;
    color: var(--igr-white) !important;
}

.igr-check-list--inline {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
}

.igr-check-list--inline li {
    padding-left: 1.25rem;
    font-size: 0.88rem;
}

/* ── Pillar cards ── */
.igr-pillar-card {
    background: var(--igr-white);
    border: 1px solid var(--igr-border);
    border-radius: var(--igr-radius-lg);
    padding: 1.25rem;
    height: 100%;
    box-shadow: var(--igr-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.igr-pillar-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--igr-shadow-card);
}

.igr-pillar-card i {
    font-size: 1.5rem;
    color: var(--igr-blue-secondary);
    margin-bottom: 0.65rem;
    display: block;
}

.igr-pillar-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--igr-dark-blue);
    margin-bottom: 0.35rem;
}

.igr-pillar-card p {
    font-size: 0.82rem;
    color: var(--igr-dark-gray);
    margin: 0;
    line-height: 1.45;
}

/* ── Industria cards ── */
.igr-industria-card {
    background: var(--igr-white);
    border: 1px solid var(--igr-border);
    border-radius: var(--igr-radius-lg);
    padding: 1.5rem;
    height: 100%;
    box-shadow: var(--igr-shadow);
}

.igr-industria-card__icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(21, 69, 177, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--igr-blue-primary);
    margin-bottom: 0.75rem;
}

.igr-industria-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--igr-dark-blue);
    margin-bottom: 0.35rem;
}

.igr-industria-card p {
    font-size: 0.88rem;
    color: var(--igr-dark-gray);
    margin: 0;
}

/* ── Process timeline ── */
.igr-process {
    display: grid;
    gap: 1rem;
    max-width: 820px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .igr-process {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

.igr-process__step {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--igr-beige);
}

.igr-process__step:last-child { border-bottom: none; margin-bottom: 0; }

.igr-tech-badge {
    display: inline-block;
}

.igr-contact-actions .igr-authority-cta {
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.igr-contact-actions .igr-authority-cta:hover {
    transform: translateY(-2px);
}

.igr-process__num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--igr-blue-primary);
    color: var(--igr-white);
    font-size: 0.85rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.igr-process__body h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--igr-dark-blue);
    margin-bottom: 0.25rem;
}

.igr-process__body p {
    font-size: 0.88rem;
    color: var(--igr-dark-gray);
    margin: 0;
}

/* ── FAQ ── */
.igr-faq .accordion-item {
    border: 1px solid var(--igr-border);
    border-radius: var(--igr-radius) !important;
    margin-bottom: 0.65rem;
    overflow: hidden;
}

.igr-faq .accordion-button {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--igr-dark-blue);
    background: var(--igr-white);
    box-shadow: none !important;
}

.igr-faq .accordion-button:not(.collapsed) {
    background: rgba(21, 69, 177, 0.06);
    color: var(--igr-blue-primary);
}

.igr-faq .accordion-body {
    font-size: 0.88rem;
    color: var(--igr-dark-gray);
    line-height: 1.55;
}

/* ── Contact band ── */
.igr-contact-band {
    background: linear-gradient(135deg, var(--igr-dark-blue) 0%, var(--igr-footer-blue) 100%);
    color: var(--igr-white);
    padding: 4rem 0;
}

.igr-contact-band h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--igr-white);
}

.igr-contact-band p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.igr-contact-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
}

.igr-contact-link:hover { color: var(--igr-white); }

/* ── Responsive ── */
@media (max-width: 991.98px) {
    .igr-hero { padding-top: 5.5rem; }
    .igr-hero-watermark { display: none; }
    .igr-book-section .igr-hero-watermark { display: none; }
    .igr-suite-block { padding: 1.5rem; }
    .igr-footer { border-top-left-radius: 48px; }
    .igr-book-modules { grid-template-columns: 1fr; }
}

@media (max-width: 575.98px) {
    .igr-section { padding: 3rem 0; }
    .igr-module-grid { grid-template-columns: 1fr; }
}