/* ========== VARIABLES CSS ========== */
:root {
    /* Colores principales */
    --primary-color: #1e3c72;
    --primary-light: #2a5298;
    --primary-dark: #152d5a;
    --secondary-color: #0d7377;
    --secondary-light: #14a085;
    --accent-color: #ff5722;
    
    /* Colores de texto */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #ffffff;
    
    /* Colores de fondo */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #2c3e50;
    
    /* Otros colores */
    --border-color: #e9ecef;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    
    /* Tipografía */
    --font-primary: 'Inter', sans-serif;
    --font-size-h1: 3.5rem;
    --font-size-h2: 2.5rem;
    --font-size-h3: 1.75rem;
    --font-size-normal: 1rem;
    --font-size-small: 0.875rem;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Transiciones */
    --transition: all 0.3s ease;
    
    /* Bordes */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-full: 50%;
    
    /* Contenedor */
    --container-width: 1200px;
    
    /* Header */
    --header-height: 80px;
    
    /* Z-index */
    --z-fixed: 100;
    --z-modal: 1000;
}

/* ========== RESET Y BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

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

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

ul {
    list-style: none;
}

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

/* ========== UTILIDADES ========== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section__subtitle {
    display: inline-block;
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.section__title {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section__description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

/* ========== BOTONES ========== */
.button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 14px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: var(--font-size-normal);
    transition: var(--transition);
    border: 2px solid transparent;
}

.button--primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--text-light);
    box-shadow: 0 4px 12px rgba(30, 60, 114, 0.3);
}

.button--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 60, 114, 0.4);
}

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

.button--ghost:hover {
    background: var(--primary-color);
    color: var(--text-light);
}

.button--block {
    width: 100%;
    justify-content: center;
}

/* ========== HEADER / NAVEGACIÓN ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-fixed);
    transition: var(--transition);
}

.header.scroll-header {
    box-shadow: var(--shadow-md);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.nav__logo i {
    font-size: 2rem;
}

.nav__list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--primary-color);
}

.nav__link:hover::after,
.nav__link.active-link::after {
    width: 100%;
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* ========== HOME SECTION ========== */
.home {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.home__container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-xl);
}

.home__subtitle {
    display: inline-block;
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.home__title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.home__description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.home__buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.home__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat p {
    font-size: var(--font-size-small);
    color: var(--text-secondary);
}

.home__image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.home__blob {
    position: relative;
    width: 400px;
    height: 400px;
}

.home__blob svg {
    width: 100%;
    height: 100%;
}

.home__icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8rem;
    color: white;
    opacity: 0.9;
}

/* ========== SERVICES SECTION ========== */
.services {
    background: var(--bg-secondary);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.service__card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}

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

.service__card:hover::before {
    transform: scaleX(1);
}

.service__card--featured {
    border: 2px solid var(--primary-color);
}

.service__badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.service__icon {
    width: 70px;
    height: 70px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: var(--spacing-md);
}

.service__icon--blue {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.service__icon--primary {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
}

.service__icon--teal {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
}

.service__icon--green {
    background: linear-gradient(135deg, #4caf50, #66bb6a);
}

.service__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.service__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.service__features {
    margin-bottom: var(--spacing-md);
}

.service__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.service__features i {
    color: var(--success-color);
    font-size: 0.75rem;
}

.service__link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.service__link:hover {
    gap: var(--spacing-sm);
}

/* ========== PROJECTS SECTION ========== */
.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project__card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.project__image {
    height: 250px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.project__overlay i {
    font-size: 5rem;
    color: white;
    opacity: 0.3;
}

.project__content {
    padding: var(--spacing-lg);
}

.project__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project__description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-secondary);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ========== TECHNOLOGIES SECTION ========== */
.technologies {
    background: var(--bg-secondary);
}

.tech__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.tech__item {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.tech__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tech__item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.tech__item p {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ========== ABOUT SECTION ========== */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about__text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about__info {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info__item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.info__item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 4px;
}

.info__item h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.info__item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.about__image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about__blob {
    position: relative;
    width: 400px;
    height: 400px;
}

.about__blob svg {
    width: 100%;
    height: 100%;
}

.about__icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8rem;
    color: white;
    opacity: 0.9;
}

/* ========== CONTACT SECTION ========== */
.contact {
    background: var(--bg-secondary);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact__card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition);
}

.contact__card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.contact__icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.contact__data h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.contact__data p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.contact__link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
}

.contact__link:hover {
    text-decoration: underline;
}

.contact__form-container {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.form__group input,
.form__group select,
.form__group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: inherit;
    font-size: var(--font-size-normal);
    transition: var(--transition);
}

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 60, 114, 0.1);
}

.form__group textarea {
    resize: vertical;
}

/* ========== FOOTER ========== */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.footer__logo i {
    font-size: 2rem;
}

.footer__description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.social__link {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

.social__link:hover {
    background: var(--primary-color);
    transform: translateY(-4px);
}

.footer__title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.footer__links a:hover {
    color: white;
    padding-left: 8px;
}

.footer__links li {
    color: rgba(255, 255, 255, 0.7);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.footer__bottom p {
    margin-bottom: var(--spacing-xs);
}

.footer__bottom i {
    color: var(--error-color);
}

/* ========== SCROLL TO TOP ========== */
.scrolltop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: var(--z-fixed);
}

.scrolltop.show-scroll {
    opacity: 1;
    visibility: visible;
}

.scrolltop:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* ========== RESPONSIVE ========== */
@media screen and (max-width: 968px) {
    :root {
        --font-size-h1: 2.5rem;
        --font-size-h2: 2rem;
        --font-size-h3: 1.5rem;
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--bg-primary);
        padding: var(--spacing-xl) var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav__menu.show-menu {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .nav__toggle {
        display: block;
    }
    
    .home__container,
    .about__grid,
    .contact__grid {
        grid-template-columns: 1fr;
    }
    
    .home__image,
    .about__image {
        order: -1;
    }
    
    .home__blob,
    .about__blob {
        width: 300px;
        height: 300px;
    }
    
    .home__icon,
    .about__icon {
        font-size: 5rem;
    }
    
    .home__buttons {
        flex-direction: column;
    }
    
    .home__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .home__title {
        font-size: 2rem;
    }
    
    .services__grid,
    .projects__grid,
    .tech__grid {
        grid-template-columns: 1fr;
    }
    
    .contact__grid {
        grid-template-columns: 1fr;
    }
    
    .contact__form-container {
        padding: var(--spacing-lg);
    }
}

/* ========== ANIMACIONES AOS ========== */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(50px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-50px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(50px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.8);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}