/* ===== Variables CSS ===== */
:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-secondary: #10b981;
    --color-background: #0f172a;
    --color-background-alt: #1e293b;
    --color-surface: #334155;
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-border: #475569;
    
    --font-family: 'Poppins', sans-serif;
    --font-size-base: 16px;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-full: 9999px;
    
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3);
    
    --transition: all 0.3s ease;
    
    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

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

/* ===== Utilidades ===== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section {
    padding: var(--spacing-2xl) 0;
}

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

.section__title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
    position: relative;
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    margin: var(--spacing-sm) auto 0;
    border-radius: var(--border-radius-full);
}

/* ===== Botones ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-full);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-text);
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ===== Header / Navegación ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

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

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

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

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

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

.nav__link:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    position: relative;
}

.nav__toggle-icon,
.nav__toggle-icon::before,
.nav__toggle-icon::after {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: var(--border-radius-full);
    transition: var(--transition);
}

.nav__toggle-icon::before,
.nav__toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.nav__toggle-icon::before {
    top: 0;
}

.nav__toggle-icon::after {
    bottom: 0;
}

.nav__toggle--active .nav__toggle-icon {
    background-color: transparent;
}

.nav__toggle--active .nav__toggle-icon::before {
    transform: rotate(45deg);
    top: 11px;
}

.nav__toggle--active .nav__toggle-icon::after {
    transform: rotate(-45deg);
    bottom: 11px;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

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

.hero__greeting {
    font-size: 1.2rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero__title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, var(--color-text), var(--color-primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__description {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

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

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

.hero__avatar {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.hero__avatar-icon {
    font-size: 8rem;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===== About Section ===== */
.about__content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about__info p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

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

.stat {
    background-color: var(--color-background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--color-border);
}

.stat__number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat__text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

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

.education__card {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.education__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.education__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.education__title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.education__description {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

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

.education__topics li {
    background-color: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--color-primary);
}

/* ===== Skills Section ===== */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.skill {
    background-color: var(--color-background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.skill:hover {
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.skill__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.skill__name {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.skill__level {
    font-size: 0.85rem;
    color: var(--color-secondary);
}

.skills__subtitle {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

.soft-skills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.soft-skill {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-full);
    font-size: 0.9rem;
}

/* ===== Projects Section ===== */
.projects__intro {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

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

.project {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.project:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.project__image {
    height: 150px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    justify-content: center;
    align-items: center;
}

.project__emoji {
    font-size: 4rem;
}

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

.project__title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.project__description {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

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

.tag {
    background-color: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    color: var(--color-primary);
}

.project--coming {
    opacity: 0.7;
}

.project--coming .project__image {
    background: var(--color-surface);
}

/* ===== Contact Section ===== */
.contact__intro {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto var(--spacing-xl);
}

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

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

.contact__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.contact__item:hover {
    border-color: var(--color-primary);
}

.contact__icon {
    font-size: 2rem;
}

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

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

.contact__cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-background-alt), var(--color-surface));
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.contact__cta p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-muted);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-background-alt);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-muted);
}

.footer__subtitle {
    margin-top: var(--spacing-xs);
    font-size: 0.9rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .hero__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__avatar {
        width: 250px;
        height: 250px;
    }

    .hero__avatar-icon {
        font-size: 6rem;
    }

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

    .about__stats {
        flex-direction: row;
        justify-content: center;
    }

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

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--color-background);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg) 0;
        gap: var(--spacing-md);
        transform: translateY(-150%);
        transition: var(--transition);
        box-shadow: var(--shadow);
    }

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

    .nav__toggle {
        display: block;
    }

    .hero__title {
        font-size: 2rem;
    }

    .section__title {
        font-size: 1.6rem;
    }

    .about__stats {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .hero__avatar {
        width: 200px;
        height: 200px;
    }

    .hero__avatar-icon {
        font-size: 5rem;
    }

    .hero__buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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