@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&family=Roboto+Mono:wght@400;700&display=swap');

:root {
    --bg-dark: #0A0A0A;
    --bg-dark-secondary: #121212;
    --text-light: #f4f4f4;
    --accent-red: #E62C1E;
    --accent-burgundy: #800020;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: var(--bg-dark);
    color: var(--text-light);
    overflow-x: hidden;
    transition: overflow 0.4s;
}

body.menu-open {
    overflow: hidden;
}

body::-webkit-scrollbar {
    width: 8px;
}

body::-webkit-scrollbar-track {
    background: var(--bg-dark-secondary);
}

body::-webkit-scrollbar-thumb {
    background: var(--accent-red);
    border-radius: 4px;
}

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

section {
    padding: 100px 0;
}

h2.section-title {
    font-size: 2.5em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    letter-spacing: 1px;
}

h2.section-title::after {
    content: '';
    width: 60px;
    height: 4px;
    background: var(--accent-red);
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.main-header {
    background: var(--bg-dark-secondary);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 2000;
    box-shadow: 0 4px 8px var(--shadow-color);
    transition: transform 0.3s ease-in-out;
}
.main-header.scroll-up {
    transform: translateY(0);
}
.main-header.scroll-down {
    transform: translateY(-100%);
}

.logo h1 {
    font-size: 2.2em;
    font-weight: 700;
    color: var(--text-light);
    font-family: 'Roboto Mono', monospace;
    letter-spacing: 2px;
}

.logo span {
    font-size: 0.8em;
    color: var(--accent-burgundy);
    display: block;
    margin-top: -5px;
    font-family: 'Roboto Mono', monospace;
}

.main-nav ul {
    list-style: none;
    display: flex;
}

.main-nav ul li {
    margin-left: 30px;
}

.main-nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease, transform 0.3s ease;
    position: relative;
}

.main-nav ul li a::after {
    content: '';
    width: 0;
    height: 2px;
    background: var(--accent-red);
    position: absolute;
    bottom: -5px;
    left: 0;
    transition: width 0.3s ease;
}

.main-nav ul li a:hover {
    color: var(--accent-red);
}

.main-nav ul li a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    margin: 5px 0;
    background-color: var(--text-light);
    transition: all 0.3s ease;
}

/* Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1549490349-0125712128e6?q=80&w=2670&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D') no-repeat center center/cover;
    padding: 0 20px;
}

.hero-content {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 1s ease-out forwards 0.5s;
}

.hero-content h2 {
    font-size: 4em;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px var(--shadow-color);
}

.hero-content p {
    font-size: 1.4em;
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-button {
    background-image: linear-gradient(45deg, var(--accent-red), var(--accent-burgundy));
    color: var(--text-light);
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(230, 44, 30, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(230, 44, 30, 0.6);
}

/* Proyectos */
#proyectos {
    background-color: var(--bg-dark-secondary);
}

#proyectos h3 {
    text-align: center;
    font-size: 1.8em;
    margin-bottom: 20px;
    color: var(--accent-burgundy);
}

.proyectos-wrapper {
    margin-top: 50px;
}

.vertical-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 50px;
}

.horizontal-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.proyecto-item {
    background: var(--bg-dark);
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 8px 20px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.proyecto-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px var(--shadow-color);
}

.proyecto-item iframe {
    width: 100%;
    height: 100%;
    border-radius: 8px;
    border: 2px solid var(--accent-red);
}

.vertical-grid .proyecto-item iframe {
    height: 500px;
}

.horizontal-grid .proyecto-item iframe {
    height: 300px;
}

/* Servicios */
#servicios {
    background-color: var(--bg-dark);
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.servicio-item {
    background: var(--bg-dark-secondary);
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 20px var(--shadow-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.servicio-item:hover {
    transform: scale(1.05);
    background-color: #1e1e1e;
}

.servicio-item h3 {
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--accent-red);
}

.servicio-item p {
    color: #ccc;
    font-size: 0.95em;
}

/* Contacto */
#contacto {
    background-color: var(--bg-dark-secondary);
}

#contacto form {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 40px auto 0;
}

#contacto input,
#contacto textarea,
#contacto button {
    margin-bottom: 20px;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

#contacto input,
#contacto textarea {
    background-color: #1e1e1e;
    color: var(--text-light);
    border: 1px solid #333;
    box-shadow: inset 0 2px 4px var(--shadow-color);
}

#contacto input:focus,
#contacto textarea:focus {
    outline: none;
    border-color: var(--accent-red);
    box-shadow: 0 0 8px rgba(230, 44, 30, 0.5);
}

#contacto button {
    background-image: linear-gradient(45deg, var(--accent-red), var(--accent-burgundy));
    color: var(--text-light);
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(230, 44, 30, 0.4);
}

#contacto button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 44, 30, 0.6);
}

.centered-text {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 30px;
    font-size: 1.1em;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 30px;
    background-color: var(--bg-dark);
    border-top: 1px solid #222;
}

.main-footer p {
    font-size: 0.9em;
    color: #aaa;
    margin-bottom: 10px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-links a {
    color: var(--text-light);
    font-size: 1.8em;
    transition: color 0.3s ease, transform 0.3s ease;
    text-decoration: none;
}

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

/* MEDIA QUERIES (Responsive) */

@media (max-width: 768px) {
    body {
        padding-top: 0;
        transition: overflow 0.4s;
    }

    .container {
        padding: 0;
    }

    section {
        padding: 60px 0;
    }

    .main-header {
        padding: 15px 20px;
        min-height: 70px;
        z-index: 3002;
    }

    .menu-toggle {
        display: flex; 
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
        width: 32px;
        height: 28px;
        cursor: pointer;
        z-index: 4000;
        background: rgba(0,0,0,0.7); 
        border-radius: 8px;
        margin-left: 10px;
    }
    .menu-toggle .bar {
        width: 100%;
        height: 4px;
        background-color: #fff; 
        border-radius: 2px;
        transition: all 0.3s ease;
        opacity: 1;
        box-shadow: 0 2px 8px rgba(0,0,0,0.25);
    }
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(12px) rotate(45deg);
        background-color: #fff; 
    }
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-12px) rotate(-45deg);
        background-color: #fff; 
    }

    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: var(--bg-dark-secondary);
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transform: translateY(-100%);
        transition: transform 0.4s cubic-bezier(.77,0,.175,1);
        z-index: 3001;
        box-shadow: 0 8px 32px var(--shadow-color);
    }

    .main-nav.active {
        display: flex;
        transform: translateY(0);
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 40px;
        margin: 0;
        padding: 0;
    }
    
    .main-nav ul li {
        margin: 0;
    }

    .main-nav ul li a {
        font-size: 2em;
        color: var(--text-light);
        padding: 20px 40px;
        border-radius: 8px;
        transition: background 0.3s, color 0.3s;
        text-align: center;
        width: 100vw;
        display: block;
    }

    .main-nav ul li a:hover {
        background: var(--accent-red);
        color: #fff;
    }

    .logo h1 {
        font-size: 1.8em;
    }

    .logo span {
        font-size: 0.7em;
    }

    .hero-content h2 {
        font-size: 2.5em;
    }

    .hero-content p {
        font-size: 1.1em;
    }

    h2.section-title {
        font-size: 2em;
    }

    .vertical-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .horizontal-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .vertical-grid .proyecto-item iframe {
        height: 400px;
    }

    .horizontal-grid .proyecto-item iframe {
        height: 250px;
    }

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