/* ========================================
   RESET & VARIABLES GLOBALES
======================================== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #059669;
    --accent: #dc2626;
    --dark: #111827;
    --gray: #4b5563;
    --light: #f9fafb;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ✅ AJUSTE: imágenes responsivas al 100% */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: var(--white);
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.2rem;
    color: var(--dark);
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
    color: var(--gray);
    font-size: 1.1rem;
}

/* ========================================
   HEADER / NAVBAR
======================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 15px 0;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--dark);
    margin: 3px 0;
    transition: var(--transition);
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(37,99,235,0.1) 0%, transparent 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.hero h1 span {
    color: var(--primary);
    position: relative;
}

.hero h1 span:after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 12px;
    background: rgba(37,99,235,0.2);
    z-index: -1;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--gray);
}

.badges {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.badge {
    height: 130px;
    border-radius: 50px;
    filter: grayscale(100%) brightness(1.2);
    transition: var(--transition);
}

.badge:hover {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.05);
}

.hero-image {
    position: absolute;
    top: 50%;
    right: 5%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 600px;
    z-index: 1;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

/* ========================================
   WHY US SECTION
======================================== */
.why-us {
    padding: 100px 0;
    background: var(--white);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card img {
    width: 80px;
    margin: 0 auto 1.5rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.card p {
    color: var(--gray);
}

/* ========================================
   KEEPER PARTNER SECTION
======================================== */
.keeper-partner {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0fdf4 0%, #ccfbf1 100%);
    position: relative;
    overflow: hidden;
}

.keeper-partner:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon points="0,0 100,100 0,100" fill="rgba(5,150,105,0.05)"/></svg>');
    z-index: 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.keeper-content {
    position: relative;
    z-index: 2;
}

.tag {
    display: inline-block;
    background: var(--secondary);
    color: white;
    padding: 5px 15px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.keeper-partner h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.keeper-features {
    margin: 2rem 0;
    text-align: left;
}

.keeper-features li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.1rem;
}

.keeper-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

.keeper-image {
    position: relative;
    z-index: 2;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* ========================================
   SERVICES SECTION
======================================== */
.services {
    padding: 100px 0;
    background: var(--white);
}

.service-card {
    background: var(--light);
    padding: 2.5rem 2rem;
    border-radius: var(--radius);
    transition: var(--transition);
    box-shadow: var(--shadow);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.icon-bg {
    width: 80px;
    height: 80px;
    background: rgba(37,99,235,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.icon-bg img {
    width: 40px;
    filter: var(--primary);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.link {
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.link:hover {
    gap: 10px;
}

/* ========================================
   TESTIMONIALS / CLIENTS
======================================== */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(135deg, #f9fafb 0%, #f3f4f6 100%);
}

.logos-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    margin: 3rem 0;
}

.logos-grid img {
    height: 60px;
    filter: grayscale(100%) brightness(0.8);
    transition: var(--transition);
    max-width: 150px;
}

.logos-grid img:hover {
    filter: grayscale(0%) brightness(1);
    transform: scale(1.05);
}

.quote {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
}

.quote:before {
    content: "";
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 6rem;
    color: rgba(37,99,235,0.1);
    font-family: Georgia, serif;
    line-height: 1;
}

blockquote {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--dark);
    margin-bottom: 1.5rem;
    text-align: center;
}

cite {
    display: block;
    text-align: right;
    font-weight: 600;
    color: var(--primary);
}

/* ========================================
   FOOTER
======================================== */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 5rem 0 2rem;
}

.footer-cta {
    text-align: center;
    padding: 3rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 3rem;
}

.footer-cta h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--white);
}

.footer-bottom {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-logo p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links h4:after,
.footer-social h4:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary);
}

.footer-links ul li {
    margin-bottom: 0.8rem;
}

.footer-links ul li a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
}

.social-icons img {
    width: 36px;
    transition: var(--transition);
}

.social-icons img:hover {
    transform: scale(1.2);
}

.footer-social p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    margin-top: 2rem;
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-image {
        position: relative;
        top: auto;
        right: auto;
        transform: none;
        width: 100%;
        margin-top: 3rem;
    }

    .grid-2 {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .keeper-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .section-title {
        font-size: 1.8rem;
    }

    .keeper-partner h2 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 130px 0 70px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .badges {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        margin-bottom: 1rem;
    }
}

/* ========================================
   ANIMATIONS & UTILITIES
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate {
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}