/* ========================================
   LINCE ESTRUCTURAL - HOJA DE ESTILOS
   Versión: 1.0
   Colores de marca:
   - Amarillo: #F8D730
   - Gris claro: #eeeeee
   - Gris medio: #5b5b5b
   - Blanco: #ffffff
   ======================================== */

/* ========================================
   1. VARIABLES DE MARCA
   ======================================== */
:root {
    --color-primary: #F8D730;
    --color-primary-dark: #e6c520;
    --color-bg-light: #ffffff;
    --color-bg-secondary: #eeeeee;
    --color-text: #5b5b5b;
    --color-text-dark: #2c2c2c;
    --color-text-light: #888888;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md: 0 5px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-dark);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   3. HEADER / NAVEGACIÓN
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-text-dark);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-accent {
    color: var(--color-primary);
}

.nav-menu ul {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-dark);
    position: relative;
}

.nav-menu a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav-menu a:not(.btn-nav):hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--color-primary);
}

.btn-nav {
    background-color: var(--color-primary);
    color: var(--color-text-dark) !important;
    padding: 10px 25px;
    border-radius: 5px;
    font-weight: 700 !important;
    transition: var(--transition);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(248, 215, 48, 0.4);
    background-color: var(--color-primary-dark);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-text-dark);
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   4. HERO SECTION
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding-top: 100px;
    padding-bottom: 120px;
    overflow: hidden;
}

/* Forma decorativa de fondo */
.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(248, 215, 48, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(91, 91, 91, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 40px 0;
}

/* Jerarquía tipográfica del H1 */
.hero h1 {
    font-weight: 800;
    margin-bottom: 25px;
    letter-spacing: -1.5px;
    color: var(--color-text-dark);
}

/* Nivel 1: Título principal (más grande) */
.hero-title-main {
    display: block;
    font-size: 4.5rem;
    line-height: 1.05;
    margin-bottom: 8px;
}

/* Nivel 2: Subtítulo (tamaño intermedio) */
.hero-title-sub {
    display: block;
    font-size: 3rem;
    line-height: 1.15;
    margin-bottom: 10px;
}

/* Highlight amarillo (marcador) */
.highlight {
    position: relative;
    display: inline;
    color: var(--color-text-dark);
    background: linear-gradient(180deg, transparent 55%, rgba(248, 215, 48, 0.55) 55%);
    padding: 0 6px;
    margin: 0 -6px;
}

/* Párrafo del hero (Nivel 3) */
.hero p {
    font-size: 1.25rem;
    margin-bottom: 35px;
    max-width: 720px;
    color: var(--color-text);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ========================================
   5. BOTONES
   ======================================== */
.btn {
    padding: 16px 32px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.95rem;
    display: inline-block;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
    font-family: var(--font-main);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-dark);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(248, 215, 48, 0.4);
    background-color: var(--color-primary-dark);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-text-dark);
    color: var(--color-text-dark);
}

.btn-outline:hover {
    background: var(--color-text-dark);
    color: #fff;
    transform: translateY(-3px);
}

/* ========================================
   6. TRUST BAR / ESTADÍSTICAS
   ======================================== */
.trust-bar {
    background: var(--color-bg-light);
    padding: 70px 0;
    margin-top: -60px;
    position: relative;
    z-index: 10;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    margin-left: 20px;
    margin-right: 20px;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.trust-item {
    padding: 30px 20px;
    border-radius: 10px;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.trust-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.trust-item:hover {
    transform: translateY(-8px);
    background: rgba(248, 215, 48, 0.08);
    box-shadow: var(--shadow-md);
}

.trust-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
}

.trust-icon svg {
    transition: var(--transition);
}

.trust-item:hover .trust-icon svg {
    transform: scale(1.1);
}

.trust-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 10px;
    line-height: 1;
    display: block;
}

.trust-number.static {
    font-size: 1.8rem;
    color: var(--color-text-dark);
}

.trust-text {
    font-size: 0.9rem;
    color: var(--color-text);
    font-weight: 500;
    line-height: 1.4;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========================================
   7. SECCIONES GENERALES
   ======================================== */
.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    color: var(--color-primary-dark);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 15px;
    position: relative;
    padding: 0 15px;
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 1px;
    background: var(--color-primary);
}

.section-tag::before {
    left: -30px;
}

.section-tag::after {
    right: -30px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--color-text);
}

/* ========================================
   8. FEATURES GRID (POR QUÉ ELEGIRNOS)
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-bg-light);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.feature-icon {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: rgba(248, 215, 48, 0.12);
    border-radius: 12px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--color-primary);
    transform: rotate(-5deg);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--color-text);
    line-height: 1.7;
}

/* ========================================
   9. SERVICES GRID
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--color-bg-light);
    padding: 40px 30px;
    border-radius: 12px;
    border-left: 4px solid var(--color-primary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(248, 215, 48, 0.2);
    line-height: 1;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    padding-right: 50px;
}

.service-card p {
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.7;
}

.link-arrow {
    color: var(--color-text-dark);
    font-weight: 700;
    font-size: 0.95rem;
    display: inline-block;
    transition: var(--transition);
}

.link-arrow:hover {
    color: var(--color-primary-dark);
    padding-left: 8px;
}

/* ========================================
   10. QUALITY SECTION (FONDO OSCURO)
   ======================================== */
.quality-section {
    background: var(--color-text-dark);
    color: #fff;
    text-align: center;
}

.quality-section .section-tag {
    color: var(--color-primary);
}

.quality-section .section-tag::before,
.quality-section .section-tag::after {
    background: var(--color-primary);
}

.quality-content {
    max-width: 800px;
    margin: 0 auto;
}

.quality-content h2 {
    color: #fff;
    font-size: 2.5rem;
    margin-bottom: 25px;
}

.quality-content p {
    color: rgba(255,255,255,0.85);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* ========================================
   11. CTA SECTION
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.15rem;
    margin-bottom: 35px;
    color: var(--color-text-dark);
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: var(--color-text-dark);
    color: #fff;
    border-color: var(--color-text-dark);
}

.cta-section .btn-primary:hover {
    background: #000;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.cta-section .btn-outline {
    border-color: var(--color-text-dark);
    color: var(--color-text-dark);
}

.cta-section .btn-outline:hover {
    background: var(--color-text-dark);
    color: #fff;
}

/* ========================================
   12. FOOTER
   ======================================== */
.footer {
    background: var(--color-text-dark);
    color: rgba(255,255,255,0.7);
    padding: 70px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer h4 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer .logo-accent {
    color: var(--color-primary);
}

.footer p {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.footer ul li {
    margin-bottom: 10px;
}

.footer a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
    font-size: 1.5rem;
}

.social-links a {
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 25px;
    font-size: 0.9rem;
}

/* ========================================
   13. ANIMACIONES (Estilo Beintech)
   ======================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.delay-1 {
    transition-delay: 0.15s;
}

.delay-2 {
    transition-delay: 0.3s;
}

/* ========================================
   14. RESPONSIVE
   ======================================== */

/* Tablet grande */
@media (max-width: 968px) {
    .hero-title-main {
        font-size: 3.2rem;
    }
    .hero-title-sub {
        font-size: 2.2rem;
    }

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

    .trust-bar {
        margin-top: -40px;
        padding: 50px 0;
    }

    .section {
        padding: 70px 0;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .quality-content h2 {
        font-size: 2rem;
    }

    .cta-content h2 {
        font-size: 2.2rem;
    }
}

/* Tablet y móvil */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 30px 20px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }

    .nav-menu a:not(.btn-nav)::after {
        display: none;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: 100px;
    }

    .hero-title-main {
        font-size: 2.5rem;
    }

    .hero-title-sub {
        font-size: 1.7rem;
    }

    .hero p {
        font-size: 1.05rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .trust-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .trust-bar {
        margin: -30px 15px 0;
        padding: 40px 20px;
    }

    .features-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }
}

/* Móvil pequeño */
@media (max-width: 480px) {
    .hero-title-main {
        font-size: 2rem;
    }

    .hero-title-sub {
        font-size: 1.4rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .trust-number {
        font-size: 2.2rem;
    }

    .trust-number.static {
        font-size: 1.5rem;
    }

    .section {
        padding: 60px 0;
    }

    .quality-content h2,
    .cta-content h2 {
        font-size: 1.8rem;
    }
}