/* ================================================
   IA en Aula — Premium Stylesheet v3
   ================================================ */

/* ================================================
   DESIGN TOKENS
   ================================================ */
:root {
    /* Core Palette */
    --primary-color:   #0f172a;
    --secondary-color: #0ea5e9;
    --accent-color:    #38bdf8;
    --accent-soft:     rgba(14, 165, 233, 0.08);

    /* Text */
    --text-main:  #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;

    /* Backgrounds */
    --bg-light:       #f8fafc;
    --bg-white:       #ffffff;
    --bg-dark:        #0f172a;
    --bg-section-alt: #f1f5f9;

    /* Borders */
    --border-color: #e2e8f0;
    --border-light: rgba(15, 23, 42, 0.06);
    --glass-bg:     rgba(255, 255, 255, 0.85);

    /* Shadows */
    --shadow-sm:        0 4px 6px -1px rgba(15,23,42,.04), 0 2px 4px -2px rgba(15,23,42,.03);
    --shadow-md:        0 10px 15px -3px rgba(15,23,42,.06), 0 4px 6px -4px rgba(15,23,42,.04);
    --shadow-lg:        0 20px 40px -8px rgba(15,23,42,.10);
    --shadow-xl:        0 32px 64px -12px rgba(15,23,42,.14);
    --shadow-card-hover: 0 24px 48px -12px rgba(14,165,233,.12);

    /* Motion */
    --ease: cubic-bezier(0.16, 1, 0.3, 1);
    --t-fast:  all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --t-base:  all 0.5s cubic-bezier(0.16, 1, 0.3, 1);

    /* Spacing */
    --section-py: 120px;

    /* Radius */
    --r-sm:   8px;
    --r-md:   12px;
    --r-lg:   20px;
    --r-xl:   28px;
    --r-full: 9999px;
}


/* ================================================
   BASE
   ================================================ */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background: var(--bg-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    line-height: 1.15;
}

p { line-height: 1.75; margin-bottom: 0; }

a { text-decoration: none; }


/* ================================================
   TYPOGRAPHY UTILITIES
   ================================================ */
.text-gradient {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 50%, var(--secondary-color) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% center; }
    50%       { background-position: 100% center; }
}

/* Section eyebrow label */
.section-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--secondary-color);
    margin-bottom: 1.25rem;
}

.section-label-left {
    padding-left: 32px;
    position: relative;
}

.section-label-left::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 2px;
    background: var(--secondary-color);
    border-radius: 2px;
}


/* ================================================
   NAVBAR
   ================================================ */
.custom-navbar {
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--t-base);
    padding: 10px 0;
    z-index: 1040;
}

.custom-navbar.scrolled {
    padding: 6px 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.06);
    border-bottom-color: transparent;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
    text-decoration: none;
    transition: var(--t-fast);
}
.logo:hover        { opacity: 0.85; }
.logo span         { color: var(--secondary-color); }
.logo i            { color: var(--secondary-color); font-size: 1.25rem; margin-right: 2px; }

.nav-link {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-main) !important;
    transition: var(--t-fast);
    position: relative;
    padding: 8px 6px !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 0; height: 2px;
    background: var(--secondary-color);
    border-radius: 2px;
    transition: var(--t-fast);
}

.nav-link:hover::after,
.nav-link.active::after { width: 100%; }
.nav-link:hover          { color: var(--secondary-color) !important; }


/* ================================================
   BUTTONS
   ================================================ */
.btn {
    font-weight: 600;
    font-size: 0.92rem;
    border-radius: var(--r-md);
    padding: 13px 30px;
    letter-spacing: 0.01em;
    transition: var(--t-fast);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,.15) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: var(--t-fast);
}
.btn:hover::after { opacity: 1; }

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #3b82f6);
    border: none;
    color: #fff;
    box-shadow: 0 4px 14px rgba(14,165,233,.28);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(14,165,233,.4);
    background: linear-gradient(135deg, #3b82f6, var(--secondary-color));
    color: #fff;
}
.btn-primary:active { transform: none; }

.btn-outline-primary {
    color: var(--primary-color);
    border: 2px solid var(--border-color);
    background: transparent;
    padding: 11px 28px;
}
.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15,23,42,.15);
}

.btn-outline-light { border-width: 2px; }
.btn-outline-light:hover { transform: translateY(-2px); }


/* ================================================
   HERO SECTION
   ================================================ */
.hero {
    background: var(--bg-light);
    padding: 148px 0 108px;
    position: relative;
    overflow: hidden;
}

/* Dot texture */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(14,165,233,.07) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    opacity: 0.55;
}

/* Glow accent top-right */
.hero::after {
    content: '';
    position: absolute;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(14,165,233,.06) 0%, transparent 70%);
    top: -300px; right: -200px;
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-soft);
    color: var(--secondary-color);
    padding: 7px 16px;
    border-radius: var(--r-full);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1.75rem;
    border: 1px solid rgba(14,165,233,.14);
}
.hero-badge i { font-size: 0.62rem; }

.hero-title {
    font-size: clamp(2.4rem, 4.5vw, 3.75rem);
    font-weight: 800;
    line-height: 1.07;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 520px;
    line-height: 1.82;
}

/* Image frame */
.hero-image-wrapper {
    border-radius: var(--r-xl);
    overflow: visible;
    background: var(--bg-white);
    padding: 5px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    position: relative;
}

.hero-image-wrapper > img {
    border-radius: calc(var(--r-xl) - 3px);
    width: 100%;
    display: block;
}

/* Floating info badges — positioned relative to .position-relative parent */
.hero-float-badge {
    display: flex !important;
    position: absolute !important;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--bg-white);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
    z-index: 20;
    white-space: nowrap;
    animation: floatBadge 6s ease-in-out infinite;
}

.hero-float-badge i {
    width: 34px;
    height: 34px;
    min-width: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-sm);
    background: var(--accent-soft);
    color: var(--secondary-color);
    font-size: 0.88rem;
}

.hero-float-badge-1 {
    bottom: -18px;
    left: -24px;
    animation-delay: 0s;
}

.hero-float-badge-2 {
    top: 28px;
    right: -22px;
    animation-delay: -3s;
}

@keyframes floatBadge {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

@keyframes gentleFloat {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

.animate-float {
    animation: gentleFloat 7s ease-in-out infinite;
}


/* ================================================
   TRUST BLOCK
   ================================================ */
.trust-section {
    padding: var(--section-py) 0;
    background: var(--bg-white);
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 4rem;
    padding-top: 3.5rem;
    border-top: 1px solid var(--border-color);
}

.trust-stat {
    text-align: center;
    padding: 1.25rem 1rem;
    border-right: 1px solid var(--border-color);
}

.trust-stat:last-child { border-right: none; }

.trust-stat-number {
    display: block;
    font-family: 'Outfit', sans-serif;
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--secondary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.trust-stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}


/* ================================================
   SERVICES GRID
   ================================================ */
.services-section {
    padding: var(--section-py) 0;
    background: var(--bg-section-alt);
}

.section-heading-centered {
    display: block;
    position: relative;
    padding-bottom: 20px;
    margin-bottom: 0;
}

.section-heading-centered::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 10px;
}

.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--r-lg);
    padding: 2.25rem 2rem;
    transition: var(--t-base);
    position: relative;
    z-index: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Top accent bar on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--t-base);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(14,165,233,.14);
}
.feature-card:hover::before { transform: scaleX(1); }

.icon-wrapper {
    width: 54px; height: 54px;
    min-width: 54px;
    background: var(--accent-soft);
    color: var(--secondary-color);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 1.4rem;
    transition: var(--t-fast);
}

.feature-card:hover .icon-wrapper {
    background: var(--secondary-color);
    color: #fff;
    transform: scale(1.08);
    box-shadow: 0 8px 20px rgba(14,165,233,.25);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.65rem;
    color: var(--secondary-color);
}

.feature-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 1rem;
}

.card-link {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--secondary-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--t-fast);
    margin-top: auto;
}
.card-link i { font-size: 0.68rem; transition: var(--t-fast); }
.feature-card:hover .card-link { gap: 10px; }
.feature-card:hover .card-link i { transform: translateX(3px); }


/* ================================================
   SOLUTIONS BLOCK
   ================================================ */
.solutions-section {
    padding: var(--section-py) 0;
    background: var(--bg-white);
}

.solution-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--r-lg);
    padding: 2rem;
    transition: var(--t-base);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.solution-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: center;
    transition: var(--t-base);
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(14,165,233,.2);
}
.solution-card:hover::after { transform: scaleX(1); }

.solution-icon {
    width: 46px; height: 46px;
    background: var(--accent-soft);
    color: var(--secondary-color);
    border-radius: var(--r-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    margin-bottom: 1.1rem;
}

.solution-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--primary-color);
}

.solution-card p {
    font-size: 0.86rem;
    color: var(--text-muted);
    line-height: 1.65;
}


/* ================================================
   BOOK SECTION
   ================================================ */
.book-section {
    padding: var(--section-py) 0;
    background: var(--bg-section-alt);
}

.book-card {
    background: var(--bg-white);
    border-radius: var(--r-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
}

.book-content {
    padding: 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.book-content .section-label { margin-bottom: 1rem; }

.book-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.book-content p {
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 480px;
    margin-bottom: 2rem;
}

.book-mockup {
    position: relative;
    background: linear-gradient(160deg, var(--primary-color) 0%, #1e3a5f 50%, #0c4a6e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 460px;
    overflow: hidden;
}

/* Grid texture */
.book-mockup::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(14,165,233,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14,165,233,.07) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.book-mockup-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2.5rem;
}

.book-mockup-icon {
    width: 80px; height: 80px;
    background: rgba(255,255,255,.1);
    border: 2px solid rgba(255,255,255,.18);
    border-radius: var(--r-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: #fff;
    backdrop-filter: blur(8px);
}

.book-mockup h3 {
    color: #fff;
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.book-mockup p {
    color: rgba(255,255,255,.6);
    font-size: 0.92rem;
    max-width: 260px;
    margin: 0 auto;
    line-height: 1.6;
}

.book-mockup .shape-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(14,165,233,.06);
    pointer-events: none;
}

.book-mockup .shape-1 { bottom: -60px; right: -40px; width: 240px; height: 240px; }
.book-mockup .shape-2 { top: -40px; left: -30px; width: 140px; height: 140px; background: rgba(56,189,248,.05); }

.book-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--secondary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 2px;
    transition: var(--t-fast);
}
.book-link:hover { opacity: 0.75; }


/* ================================================
   BENEFITS SECTION
   ================================================ */
.benefits-section {
    padding: var(--section-py) 0;
    background: var(--bg-white);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1.1rem;
    padding: 1.5rem;
    border-radius: var(--r-md);
    transition: var(--t-fast);
}

.benefit-item:hover { background: var(--bg-light); }

.benefit-icon {
    width: 44px; height: 44px;
    min-width: 44px;
    background: var(--accent-soft);
    color: var(--secondary-color);
    border-radius: var(--r-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--t-fast);
    flex-shrink: 0;
}

.benefit-item:hover .benefit-icon {
    background: var(--secondary-color);
    color: #fff;
}

.benefit-text h4 {
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: var(--primary-color);
}

.benefit-text p {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.65;
}


/* ================================================
   CTA BLOCK
   ================================================ */
.cta-section {
    padding: var(--section-py) 0;
    background: var(--bg-section-alt);
}

.cta-block {
    background: linear-gradient(160deg, #0f172a 0%, #1e293b 60%, #0f2137 100%);
    border-radius: var(--r-xl);
    padding: 5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(148,163,184,.08);
}

/* Dot texture */
.cta-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(14,165,233,.08) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
    opacity: 0.5;
}

.cta-block .cta-glow-1,
.cta-block .cta-glow-2 {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.cta-block .cta-glow-1 {
    width: 440px; height: 440px;
    background: radial-gradient(circle, rgba(14,165,233,.1) 0%, transparent 70%);
    top: -220px; right: -100px;
}

.cta-block .cta-glow-2 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(56,189,248,.06) 0%, transparent 70%);
    bottom: -150px; left: -50px;
}

.cta-block h2 {
    color: #fff;
    font-weight: 800;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 2;
    margin-bottom: 1.25rem;
}

.cta-block p {
    color: rgba(148,163,184,.9);
    position: relative;
    z-index: 2;
    margin-bottom: 2.5rem;
}

.cta-block .btn { position: relative; z-index: 2; }


/* ================================================
   FOOTER
   ================================================ */
.footer {
    background: var(--bg-dark);
    color: #94a3b8;
}

.footer h5 {
    color: #fff;
    font-weight: 700;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin-bottom: 1.4rem;
}

.footer-link {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.87rem;
    transition: var(--t-fast);
    padding: 2px 0;
}
.footer-link:hover {
    color: var(--secondary-color);
    padding-left: 4px;
}

.footer .logo { font-size: 1.3rem; }
.footer .logo i    { color: var(--secondary-color); }
.footer .logo span { color: var(--secondary-color) !important; }

.social-links a {
    width: 36px; height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r-sm);
    background: rgba(255,255,255,.05);
    color: #94a3b8;
    transition: var(--t-fast);
    font-size: 0.95rem;
}

.social-links a:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: translateY(-2px);
}


/* ================================================
   WHATSAPP FLOAT
   ================================================ */
.whatsapp-float {
    position: fixed;
    bottom: 28px; right: 28px;
    width: 56px; height: 56px;
    background: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 6px 20px rgba(37,211,102,.35);
    z-index: 1050;
    transition: var(--t-fast);
}

.whatsapp-float:hover {
    transform: scale(1.1) translateY(-2px);
    color: #fff;
    box-shadow: 0 12px 30px rgba(37,211,102,.45);
}


/* ================================================
   INTERNAL HERO (sub-pages)
   ================================================ */
.internal-hero {
    background: linear-gradient(160deg, #0f172a 0%, #1e293b 100%);
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.internal-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(14,165,233,.06) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    opacity: 0.4;
}

.internal-hero::after {
    content: '';
    position: absolute;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(14,165,233,.12) 0%, transparent 70%);
    top: -150px; right: -150px;
    pointer-events: none;
}

.internal-hero h1 {
    color: #fff;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.internal-hero p {
    position: relative;
    z-index: 2;
    color: rgba(148,163,184,.9);
}


/* ================================================
   ANIMATIONS
   ================================================ */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.slide-in-bottom {
    opacity: 0;
    transform: translateY(44px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.reveal-active,
.slide-in-bottom.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s;  }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s;  }
.stagger-5 { transition-delay: 0.25s; }
.stagger-6 { transition-delay: 0.3s;  }


/* ================================================
   MISC UTILITIES
   ================================================ */
.hover-opacity:hover { opacity: 0.72; transition: var(--t-fast); }

/* Compat aliases */
.service-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--r-lg);
    padding: 2.25rem;
    transition: var(--t-base);
    height: 100%;
}
.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-card-hover);
}

.service-icon {
    width: 54px; height: 54px;
    background: var(--accent-soft);
    color: var(--secondary-color);
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 1.4rem;
}


/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1199px) {
    .hero          { padding: 132px 0 90px; }
    .book-content  { padding: 2.5rem; }
    .feature-card  { padding: 2rem 1.75rem; }
}

@media (max-width: 991px) {
    :root { --section-py: 80px; }

    .hero {
        padding: 120px 0 70px;
        text-align: center;
    }
    .hero-subtitle       { margin: 0 auto 2.5rem; }
    .hero .d-flex        { justify-content: center; }

    .internal-hero       { padding: 140px 0 80px; text-align: center; }

    .trust-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0;
    }
    .trust-stat { border-right: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
    .trust-stat:nth-child(2) { border-right: none; }
    .trust-stat:nth-child(3) { border-bottom: none; }
    .trust-stat:nth-child(4) { border-right: none; border-bottom: none; }

    .book-content { padding: 2rem; text-align: center; }
    .book-content .d-flex { justify-content: center; }
    .book-content p       { margin-left: auto; margin-right: auto; }
    .book-mockup          { min-height: 300px; }

    .cta-block    { padding: 3.5rem 2rem; }
}

@media (max-width: 767px) {
    :root { --section-py: 64px; }

    .hero-title        { font-size: 2.15rem; }
    .trust-stat-number { font-size: 2.25rem; }
    .feature-card      { padding: 1.75rem 1.5rem; }
    .cta-block         { padding: 3rem 1.5rem; }
    .book-content      { padding: 1.75rem; }
    .benefit-item      { padding: 1.1rem; }
    .hero-float-badge  { display: none !important; }
}

@media (max-width: 575px) {
    .hero       { padding: 110px 0 60px; }
    .hero-title { font-size: 1.9rem; }
    .btn        { padding: 12px 22px; font-size: 0.88rem; }
}