@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&display=swap');

/* --- CSS Variables & Design Tokens --- */
:root {
    /* Brand Colors */
    --color-bg-base: #0B0B0D;
    --color-bg-surface: #121215;
    --color-bg-elevated: #1A1A1E;
    --color-accent: #00F5A0;
    --color-accent-dim: rgba(0, 245, 160, 0.15);
    --color-border: #8A8F98;

    /* Typography Colors */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #8A8F98;

    /* Typography */
    --font-primary: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'IBM Plex Mono', monospace;

    /* Geometry / Brutalist (0 or small radius) */
    --radius-md: 0px;
    --radius-lg: 0px;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

/* --- Resets --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: auto;
    /* Controlado via JS para mayor suavidad */
}

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

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

ul {
    list-style: none;
}

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

/* --- Layout System --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 8rem 0;
}

/* --- Typography --- */
h1,
h2,
h3,
h4 {
    line-height: 1.1;
    font-weight: 700;
}

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

.accent-outline {
    color: transparent;
    -webkit-text-stroke: 1px var(--color-accent);
}

/* --- UI Components --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg-base);
    border: 1px solid var(--color-accent);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--color-accent-dim);
}

.btn-primary .arrow {
    margin-left: 0.5rem;
    transition: transform var(--transition-fast);
}

.btn-primary:hover .arrow {
    transform: translateX(4px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* --- Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: background-color var(--transition-fast), padding var(--transition-fast), border-bottom var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.site-header.scrolled {
    background-color: rgba(11, 11, 13, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link.active {
    color: var(--color-accent);
}

.mobile-menu-toggle {
    display: none;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    position: absolute;
    left: 0;
    transition: all var(--transition-fast);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before {
    content: '';
    top: -8px;
}

.hamburger::after {
    content: '';
    bottom: -8px;
}

/* --- Hero Section --- */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 6rem;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.kicker {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5.5rem);
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.hero-glow {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-dim) 0%, transparent 70%);
    z-index: 1;
    pointer-events: none;
    filter: blur(60px);
}

/* --- Services / Capacidades --- */
.section-header {
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.badge {
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    border-radius: 0;
    font-weight: 400;
    font-family: var(--font-mono);
}

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

.service-card {
    background-color: var(--color-bg-surface);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
}

.srv-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
}

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

.service-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* --- Portfolio --- */
.portfolio-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.filter-btn {
    color: var(--color-text-secondary);
    font-size: 1rem;
    padding-bottom: 0.5rem;
    font-weight: 600;
    position: relative;
    font-family: var(--font-mono);
    text-transform: uppercase;
}

.filter-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.filter-btn.active {
    color: var(--color-text-primary);
}

.filter-btn.active::after,
.filter-btn:hover::after {
    width: 100%;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.portfolio-item.hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
    position: absolute;
}

.project-card {
    background: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-fast);
}

.project-card:hover {
    border-color: var(--color-accent);
}

.project-card:hover .project-img-placeholder {
    transform: scale(1.05);
}

.project-img-placeholder {
    height: 250px;
    background-color: var(--color-bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.1);
    font-size: 3rem;
    font-weight: 700;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    font-family: var(--font-mono);
}

.web-bg {
    background: linear-gradient(45deg, #0e1015, #16181d);
}

.brand-bg {
    background: linear-gradient(45deg, #111114, #1c1c21);
}

.project-info {
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.project-info h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.project-tag {
    font-size: 0.8rem;
    color: var(--color-accent);
    font-family: var(--font-mono);
    text-transform: uppercase;
}

/* --- Manifesto --- */
.manifesto-section {
    text-align: center;
    background-color: var(--color-bg-surface);
    color: var(--color-text-primary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.manifesto-section .accent-outline {
    -webkit-text-stroke: 1px var(--color-accent);
}

.manifesto-content h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
    letter-spacing: -1px;
    margin-bottom: 2rem;
}

.manifesto-content p {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    max-width: 800px;
    margin: 0 auto 3rem;
    font-weight: 600;
}

.coordinates {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* --- Footer --- */
.site-footer {
    padding: 6rem 0 3rem;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

.footer-brand .slogan {
    margin-top: 1rem;
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.footer-links h4,
.footer-social h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.contact-link {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    font-family: var(--font-mono);
}

.contact-link:hover {
    color: var(--color-accent);
}

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

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 0;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

.social-icons a:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-base);
    border-color: var(--color-accent);
}

/* --- Utility Animations --- */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg-base);
        display: flex;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform var(--transition-smooth);
    }

    .main-nav.menu-open {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .nav-link {
        font-size: 1.5rem;
    }

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

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

/* --- Contact & Forms --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    position: relative;
}

.form-control {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-border);
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    padding: 1rem 0;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-bottom-color: var(--color-accent);
}

.form-control::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.7;
}

/* Validation States */
.form-control.error-input {
    border-bottom-color: #FF3366;
}

.form-control.error-input:focus {
    border-bottom-color: #FF3366;
    box-shadow: 0 1px 0 0 #FF3366;
}

.form-control.success-input {
    border-bottom-color: var(--color-accent);
}

.error-message {
    display: block;
    color: #FF3366;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    margin-top: 0.5rem;
    position: absolute;
    bottom: -20px;
    left: 0;
}

/* Update form-group margin to accommodate absolute error messages */
.form-group {
    position: relative;
    margin-bottom: 1rem;
    /* Added space for error messages */
}

.submit-btn {
    align-self: flex-start;
    margin-top: 1rem;
}

.form-response {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    font-family: var(--font-mono);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.form-response.success {
    color: var(--color-accent);
}

.form-response.error {
    color: #FF3366;
}

/* --- WhatsApp Float Button --- */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: var(--color-bg-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    /* 0px for brutalist */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

.whatsapp-float:hover {
    background-color: transparent;
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--color-accent-dim);
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: 60px;
    height: 60px;
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    /* 0px for brutalist */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--color-accent-dim);
}