* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-dark: #2C2C2C;
    --color-brand: #b1e2c8;           /* brand green — main background */
    --color-brand-dark: #3d7a5f;      /* dark green — text/icons on light surfaces */
    --color-brand-light: #d8f1e4;
    --color-white: #FFFFFF;
    --color-text: #333333;
    --color-text-light: #6B6B6B;
}

body {
    background-color: var(--color-brand);
    color: var(--color-text);
    font-size: 16px;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.02em;
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-dark);
    text-decoration: none;
}

ul, li {
    margin: 0;
    padding: 0;
    list-style: none;
}

.my-container {
    width: 100%;
    margin: auto;
    min-height: 100vh;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================
   NAVIGATION
   ============================ */

.nav-main {
    background: var(--color-brand);
    font-size: 15px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    font-weight: 500;
}

.navbar-brand {
    width: 25%;
    margin-left: 5%;
}

.nav-brand {
    width: 10rem;
    height: auto;
}

.nav-main ul {
    text-align: center;
    margin: auto;
}

.nav-main li {
    padding: 10px;
    display: inline-block;
}

.nav-main .nav-link {
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 13px;
    transition: color 0.2s;
}

.nav-main .nav-link:hover {
    color: var(--color-brand-dark);
}

/* ============================
   HERO SECTION
   ============================ */

.hero {
    position: relative;
    width: 100%;
    height: 90vh;
    min-height: 500px;
    max-height: 800px;
    background: url('../../img/showcase-1.jpg') no-repeat center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(44,44,44,0.75) 0%, rgba(44,44,44,0.45) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 2rem;
    max-width: 750px;
}

.hero-tag {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-brand-light);
    margin-bottom: 1rem;
}

.hero-content h1 {
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-sub {
    font-size: 1.05rem;
    font-weight: 300;
    color: rgba(255,255,255,0.85);
    margin-bottom: 2rem;
}

/* ============================
   BUTTONS
   ============================ */

.btn {
    font-weight: 600;
    padding: 0.9em 2em;
    font-size: 0.85em;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-m4u-primary {
    background: var(--color-brand);
    color: var(--color-dark);
    border: 2px solid var(--color-brand);
}

.btn-m4u-primary:hover {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-cta {
    background: var(--color-dark);
    color: var(--color-white);
    border: 2px solid var(--color-dark);
}

.btn-cta:hover {
    background: var(--color-brand);
    color: var(--color-dark);
    border-color: var(--color-brand);
}

.btn-link {
    display: inline-block;
    color: var(--color-brand-dark);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-top: 0.5rem;
    transition: color 0.2s;
}

.btn-link:hover {
    color: var(--color-dark);
}

.btn-link i {
    margin-left: 0.3rem;
    font-size: 0.75rem;
}

.btn-underline {
    padding: 10px 0;
    color: var(--color-dark);
    display: inline-block;
    font-weight: bold;
    font-size: 15px;
}

.btn-underline:hover {
    text-decoration: underline;
    color: var(--color-dark);
}

/* ============================
   ENFOQUE SECTION
   ============================ */

.enfoque {
    padding: 5rem 1.5rem;
    text-align: center;
    background: var(--color-white);
}

.enfoque h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 1rem;
}

.enfoque p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================
   PILARES SECTION
   ============================ */

.pilares {
    padding: 5rem 1.5rem;
    background: var(--color-brand);
}

.pilares-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.pilar {
    background: var(--color-white);
    padding: 3rem 2.5rem;
    border-radius: 12px;
    border-top: 3px solid var(--color-brand-dark);
    transition: transform 0.2s ease;
    display: flex;
    flex-direction: column;
}

.pilar .btn-link {
    margin-top: auto;
}

.pilar:hover {
    transform: translateY(-4px);
}

.pilar-icon {
    margin-bottom: 1.5rem;
}

.pilar-icon i {
    font-size: 1.8rem;
    color: var(--color-brand-dark);
}

.pilar h3 {
    font-size: 1.3rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.pilar-headline {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-brand-dark);
    margin-bottom: 1rem;
}

.pilar p:last-of-type {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

/* ============================
   MÉTODO SECTION
   ============================ */

.metodo {
    padding: 5rem 1.5rem;
    background: var(--color-dark);
    color: var(--color-white);
}

.metodo h2 {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 3rem;
}

.metodo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.metodo-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metodo-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 200;
    color: var(--color-brand);
    margin-bottom: 1rem;
}

.metodo-item h4 {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.75rem;
}

.metodo-item p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    margin-top: auto;
}

/* ============================
   CTA SECTION
   ============================ */

.cta-section {
    padding: 5rem 1.5rem;
    text-align: center;
    background: var(--color-white);
}

.cta-section h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.75rem;
}

.cta-section p {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

/* ============================
   PROMO SECTION
   ============================ */

.promo {
    background: var(--color-brand);
}

.promo h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
}

.promo-cards h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 10px 0;
}

.promo-cards p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.info-cards {
    margin: 0 4% 2em;
}

.info-cards-no-data {
    width: 100%;
    text-align: center;
}

/* ============================
   SOCIAL LINKS
   ============================ */

.social {
    margin: 4em 0;
    padding: 2em;
}

.social p {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

.links {
    display: flex;
    align-items: center;
    justify-content: center;
}

.links a {
    margin: 0 1rem;
    color: var(--color-dark);
    transition: color 0.2s;
}

.links a:hover {
    color: var(--color-brand-dark);
}

.links a i {
    font-size: 2em;
}

/* ============================
   FOOTER
   ============================ */

.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.5);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 1.5rem 0;
    text-align: center;
    letter-spacing: 0.05em;
}

/* ============================
   RESPONSIVE
   ============================ */

@media (max-width: 768px) {
    .hero {
        min-height: 400px;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-tag {
        font-size: 0.65rem;
    }

    .hero-sub {
        font-size: 0.9rem;
    }

    .pilares-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .metodo-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .enfoque,
    .pilares,
    .metodo,
    .cta-section {
        padding: 3.5rem 1.5rem;
    }

    .enfoque h2,
    .metodo h2,
    .cta-section h2 {
        font-size: 1.4rem;
    }
}

@media (max-width: 500px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .pilar {
        padding: 2rem 1.5rem;
    }

    .promo-cards {
        grid-template-columns: repeat(1, 1fr);
    }

    .navbar-brand {
        width: auto;
        margin-left: 0;
    }
}