/* ===== VARIABLES ===== */
:root {
    --clr-primary: #1a3a5c;
    --clr-primary-light: #2a5a8c;
    --clr-primary-dark: #0f2440;
    --clr-accent: #c9a84c;
    --clr-accent-light: #e0c76e;
    --clr-success: #2e8b57;
    --clr-bg: #ffffff;
    --clr-bg-alt: #f5f7fa;
    --clr-bg-dark: #0f1923;
    --clr-text: #2c3e50;
    --clr-text-light: #5a6c7d;
    --clr-text-lighter: #8899aa;
    --clr-border: #e2e8f0;
    --clr-whatsapp: #25d366;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    --transition: 0.3s ease;
}

/* ===== RESET ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    color: var(--clr-text);
    background: var(--clr-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section--alt {
    background: var(--clr-bg-alt);
}

.section__header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}

.section__tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--clr-accent);
    background: rgba(201, 168, 76, 0.1);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section__title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: var(--clr-primary-dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section__subtitle {
    font-size: 1.05rem;
    color: var(--clr-text-light);
    line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    text-align: center;
    justify-content: center;
    white-space: nowrap;
}

.btn--primary {
    background: var(--clr-primary);
    color: #fff;
    border: 2px solid var(--clr-primary);
}
.btn--primary:hover {
    background: var(--clr-primary-light);
    border-color: var(--clr-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--clr-primary);
    border: 2px solid var(--clr-border);
}
.btn--outline:hover {
    border-color: var(--clr-primary);
    background: rgba(26, 58, 92, 0.04);
}

.btn--white {
    background: #fff;
    color: var(--clr-primary-dark);
    border: 2px solid #fff;
}
.btn--white:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--sm { padding: 10px 20px; font-size: 0.9rem; }
.btn--lg { padding: 16px 32px; font-size: 1.05rem; }

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all var(--transition);
}

.header--scrolled {
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    overflow: hidden;
}

.header__logo {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    line-height: 1;
}

.header__logo-img {
    height: 56px;
    width: auto;
    display: block;
}

.header__logo-text {
    display: inline-flex;
}

.logo-tesis { color: var(--clr-primary-dark); }
.logo-tesis--light { color: #fff; }
.logo-org { color: var(--clr-accent); }

.header__nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--clr-text-light);
    transition: color var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--clr-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--clr-accent);
    transition: width var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta { margin-left: 8px; }

.header__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.header__hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--clr-primary-dark);
    border-radius: 2px;
    transition: all var(--transition);
}

.header__hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.header__hamburger.active span:nth-child(2) {
    opacity: 0;
}
.header__hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO ===== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2f7 50%, #e8edf4 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(26, 58, 92, 0.04) 0%, transparent 70%);
    border-radius: 50%;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: center;
}

.hero__badge {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--clr-accent);
    background: rgba(201, 168, 76, 0.12);
    padding: 8px 20px;
    border-radius: 50px;
    margin-bottom: 24px;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1.15;
    color: var(--clr-primary-dark);
    margin-bottom: 16px;
}

.highlight {
    color: var(--clr-primary-light);
    position: relative;
}

.hero__subtitle {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--clr-success);
    margin-bottom: 16px;
}

.hero__text {
    font-size: 1.05rem;
    color: var(--clr-text-light);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 540px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.hero__trust {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--clr-text-light);
}

.trust-item svg {
    color: var(--clr-success);
    flex-shrink: 0;
}

/* Hero Card */
.hero__visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(0,0,0,0.04);
    position: relative;
}

.hero-card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--clr-accent), var(--clr-primary));
    z-index: -1;
    opacity: 0.15;
}

.hero-card__icon {
    margin-bottom: 16px;
}

.hero-card__logo {
    width: 100%;
    max-width: 260px;
    height: auto;
    margin: 0 auto 20px;
    display: block;
    filter: drop-shadow(0 8px 20px rgba(26, 58, 92, 0.2));
}

.hero-card__stat {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--clr-primary-dark);
    line-height: 1;
    margin-bottom: 8px;
}

.hero-card__label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 4px;
}

.hero-card__sub {
    font-size: 0.85rem;
    color: var(--clr-text-lighter);
}

/* ===== SERVICES ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--clr-border);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card--featured {
    border-color: var(--clr-primary);
    box-shadow: var(--shadow-md);
}

.service-card__badge {
    position: absolute;
    top: -12px;
    background: var(--clr-accent);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--clr-bg-alt);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    color: var(--clr-primary);
}

.service-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-primary-dark);
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: 0.9rem;
    color: var(--clr-text-light);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.service-card__price {
    font-size: 0.95rem;
    color: var(--clr-text);
    margin-bottom: 20px;
}

.service-card__price strong {
    font-size: 1.2rem;
    color: var(--clr-primary-dark);
}

/* ===== STEPS / PROCESO ===== */
.steps {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--clr-accent), var(--clr-primary));
}

.step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.step:last-child { margin-bottom: 0; }

.step__number {
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: 50%;
    background: var(--clr-primary);
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 0 6px var(--clr-bg-alt);
}

.step__content {
    padding-top: 10px;
}

.step__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-primary-dark);
    margin-bottom: 8px;
}

.step__text {
    font-size: 0.95rem;
    color: var(--clr-text-light);
    line-height: 1.6;
}

/* ===== ADVANTAGES ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.advantage {
    text-align: center;
    padding: 32px 24px;
}

.advantage__icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 58, 92, 0.08), rgba(201, 168, 76, 0.08));
    border-radius: 50%;
    margin: 0 auto 20px;
    color: var(--clr-primary);
}

.advantage__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-primary-dark);
    margin-bottom: 10px;
}

.advantage__text {
    font-size: 0.9rem;
    color: var(--clr-text-light);
    line-height: 1.6;
}

/* ===== PRICING TABLE ===== */
.pricing-table-wrapper {
    overflow-x: auto;
    margin-bottom: 24px;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.pricing-table thead {
    background: var(--clr-primary-dark);
    color: #fff;
}

.pricing-table th {
    padding: 16px 24px;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-table td {
    padding: 20px 24px;
    border-bottom: 1px solid var(--clr-border);
    font-size: 0.95rem;
}

.pricing-table tbody tr:last-child td {
    border-bottom: none;
}

.pricing-table tbody tr:hover {
    background: rgba(26, 58, 92, 0.02);
}

.price-highlight {
    font-weight: 700;
    color: var(--clr-primary);
    font-size: 1.1rem;
}

.pricing-note {
    text-align: center;
    padding: 20px;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--clr-border);
    margin-bottom: 32px;
}

.pricing-note p {
    font-size: 0.95rem;
    color: var(--clr-text-light);
}

.pricing-cta {
    text-align: center;
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 32px;
    border: 1px solid var(--clr-border);
    transition: all var(--transition);
}

.testimonial:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.testimonial__stars {
    color: var(--clr-accent);
    font-size: 1.2rem;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial__text {
    font-size: 0.9rem;
    color: var(--clr-text);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.testimonial__name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--clr-primary-dark);
}

.testimonial__info {
    font-size: 0.8rem;
    color: var(--clr-text-lighter);
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 780px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    border: 1px solid var(--clr-border);
    overflow: hidden;
    transition: all var(--transition);
}

.faq-item:hover {
    border-color: var(--clr-primary-light);
}

.faq-item__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--clr-primary-dark);
    text-align: left;
    cursor: pointer;
    gap: 16px;
}

.faq-item__question span {
    flex: 1;
}

.faq-item__icon {
    transition: transform var(--transition);
    flex-shrink: 0;
    color: var(--clr-text-lighter);
}

.faq-item.active .faq-item__icon {
    transform: rotate(180deg);
    color: var(--clr-primary);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-item__answer {
    max-height: 300px;
}

.faq-item__answer p {
    padding: 0 24px 20px;
    font-size: 0.95rem;
    color: var(--clr-text-light);
    line-height: 1.7;
}

/* ===== CTA FINAL ===== */
.cta-final {
    background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 100%);
    padding: 80px 0;
}

.cta-final__inner {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-final__title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    color: #fff;
    margin-bottom: 16px;
}

.cta-final__text {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--clr-bg-dark);
    color: rgba(255,255,255,0.7);
    padding-top: 60px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer__brand .header__logo {
    margin-bottom: 16px;
    display: inline-block;
}

.footer__desc {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 280px;
}

.footer__links h4 {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer__links a {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer__links a:hover {
    color: var(--clr-accent);
}

.footer__location {
    font-size: 0.85rem;
    margin-top: 8px;
    opacity: 0.6;
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    font-size: 0.85rem;
}

.footer__bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer__legal {
    display: flex;
    gap: 20px;
}

.footer__legal a {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition);
}

.footer__legal a:hover {
    color: var(--clr-accent);
}

@media (max-width: 600px) {
    .footer__bottom-inner {
        justify-content: center;
        text-align: center;
    }
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: var(--clr-whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all var(--transition);
    animation: pulse-wa 2s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

@keyframes pulse-wa {
    0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6); }
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero__visual {
        order: -1;
    }

    .hero-card {
        padding: 28px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

    .section__title { font-size: 1.75rem; }

    .hero {
        padding: 110px 0 60px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1.1rem;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
    }

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

    .hero__visual {
        display: none;
    }

    .header__logo-img {
        height: 44px;
    }

    .header__logo {
        font-size: 1.3rem;
        gap: 10px;
    }

    /* Mobile Nav */
    .header__hamburger {
        display: flex;
    }

    .header__nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 40px 24px;
        gap: 24px;
        transform: translateX(100%);
        transition: transform 0.35s ease;
    }

    .header__nav.open {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .nav-cta {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .advantage {
        padding: 24px 16px;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .steps::before {
        left: 20px;
    }

    .step__number {
        width: 42px;
        height: 42px;
        min-width: 42px;
        font-size: 1rem;
    }

    .pricing-table th,
    .pricing-table td {
        padding: 12px 16px;
        font-size: 0.85rem;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cta-final__title {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .hero__title { font-size: 1.7rem; }

    .hero__badge { font-size: 0.75rem; padding: 6px 14px; }

    .section__title { font-size: 1.5rem; }

    .btn--lg { padding: 14px 24px; font-size: 0.95rem; }

    .whatsapp-float {
        bottom: 16px;
        right: 16px;
        width: 54px;
        height: 54px;
    }
}