:root {
    --bg-base: #050505;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --accent-orange: #FF5722;
    --accent-orange-hover: #FF7A00;
    --panel-bg: rgba(12, 12, 12, 0.85);
    --card-bg: rgba(25, 25, 25, 0.6);
    --border-color: rgba(255, 87, 34, 0.15);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    overflow: hidden; /* Evita el scroll global, todo pasa en los paneles */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    position: relative;
}

/* Home / Inicio Central */
.home-container {
    text-align: center;
    z-index: 1;
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: transform 0.6s cubic-bezier(0.83, 0, 0.17, 1), opacity 0.6s ease;
}

/* Efecto al abrir un panel: el fondo se aleja un poco */
body.panel-open .home-container {
    transform: scale(0.95) translateX(-5%);
    opacity: 0.5;
}

.hero {
    position: relative;
    z-index: 2;
}

.brand-title {
    font-size: 6rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -2px;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 50%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px rgba(255, 87, 34, 0.2);
}

.brand-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 4rem;
}

/* Navegación */
.main-nav {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-family: 'Outfit', sans-serif;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--accent-orange);
    z-index: 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    border-radius: 50px;
}

.nav-btn:hover {
    border-color: var(--accent-orange);
    box-shadow: 0 10px 20px rgba(255, 87, 34, 0.3);
    transform: translateY(-5px);
}

.nav-btn:hover::before {
    transform: scaleX(1);
}

.nav-btn .btn-text {
    position: relative;
    z-index: 1;
}

/* Paneles Laterales (Sub-pestañas) */
.side-panel {
    position: fixed;
    top: 0;
    right: -100%; /* Oculto por defecto a la derecha */
    width: 85%; /* No ocupa el 100% para dejar ver el home de fondo */
    max-width: 1200px;
    height: 100vh;
    background: var(--panel-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 10;
    transition: right 0.7s cubic-bezier(0.83, 0, 0.17, 1);
    overflow-y: auto;
    border-left: 1px solid var(--border-color);
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.5);
    padding: 4rem;
}

.side-panel.open {
    right: 0;
}

.panel-header {
    margin-bottom: 3rem;
}

.close-btn {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: color 0.3s ease, transform 0.3s ease;
    padding: 0.5rem 0;
}

.close-btn:hover {
    color: var(--accent-orange);
    transform: translateX(-5px);
}

.panel-content h2 {
    font-size: 4rem;
    margin-bottom: 3rem;
    color: #fff;
    font-weight: 800;
}

/* Tarjetas de Apps */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.app-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s ease;
    cursor: pointer;
}

.app-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-orange);
    background: rgba(40, 40, 40, 0.8);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 1rem;
    background: rgba(255, 87, 34, 0.1);
    border-radius: 16px;
    color: var(--accent-orange);
}

.app-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #fff;
}

.app-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Badge Solo Windows */
.os-badge {
    display: inline-block;
    background: rgba(76, 175, 80, 0.1); /* Verde traslúcido */
    color: #4CAF50; /* Texto verde */
    border: 1px solid #4CAF50; /* Borde verde */
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.os-badge:hover {
    background: rgba(76, 175, 80, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(76, 175, 80, 0.2);
}

.os-explanation {
    display: none;
    background: rgba(76, 175, 80, 0.05);
    border-left: 3px solid #4CAF50;
    padding: 0.8rem 1rem;
    border-radius: 0 8px 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Formularios simples */
.form-input {
    width: 100%;
    max-width: 500px;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: #fff;
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    display: block;
    transition: border-color 0.3s;
}

textarea.form-input {
    resize: vertical;
    min-height: 140px;
}

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

.submit-btn {
    background: var(--accent-orange);
    color: #fff;
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.submit-btn:hover {
    background: var(--accent-orange-hover);
    transform: translateY(-2px);
}

/* Efectos de fondo abstracto */
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 0;
    pointer-events: none;
}

.orange-glow {
    width: 40vw;
    height: 40vw;
    background: rgba(255, 87, 34, 0.08);
    top: -10vw;
    right: -10vw;
}

.dark-glow {
    width: 50vw;
    height: 50vw;
    background: rgba(255, 255, 255, 0.02);
    bottom: -20vw;
    left: -20vw;
}

/* Modal de Detalles de App */
.app-modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.app-modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    width: 90%;
    max-width: 600px;
    padding: 3.5rem;
    position: relative;
    transform: translateY(40px) scale(0.95);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8);
}

.app-modal.open .modal-content {
    transform: translateY(0) scale(1);
}

.close-modal-btn {
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: var(--text-secondary);
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    cursor: pointer;
    transition: all 0.3s;
}

.close-modal-btn:hover {
    background: var(--accent-orange);
    color: #fff;
    transform: rotate(90deg);
}

.modal-icon {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.modal-body h2 {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1rem;
    font-weight: 800;
}

.modal-body p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

/* Sección de Subida */
.upload-section {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
}

.upload-section h3 {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.upload-box {
    border: 2px dashed rgba(255, 87, 34, 0.4);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(255, 87, 34, 0.02);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-box:hover {
    border-color: var(--accent-orange);
    background: rgba(255, 87, 34, 0.06);
    transform: translateY(-5px);
}

.upload-box svg {
    color: var(--accent-orange);
    margin-bottom: 1rem;
}

.upload-box p {
    margin-bottom: 1.5rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.upload-btn {
    background: var(--accent-orange);
    color: #fff;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.upload-btn:hover {
    background: var(--accent-orange-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 87, 34, 0.3);
}

/* Estilos para "Ver más" y botón de descarga */
.see-more {
    color: var(--accent-orange);
    font-weight: 500;
    cursor: pointer;
    text-decoration: underline;
    margin-left: 5px;
}

.download-btn {
    display: inline-block;
    margin-top: 1.5rem;
    background: rgba(255, 87, 34, 0.1);
    color: var(--accent-orange);
    border: 1px solid var(--accent-orange);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.download-btn:hover {
    background: var(--accent-orange);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 87, 34, 0.3);
}

.modal-desc-content {
    max-height: 40vh;
    overflow-y: auto;
    padding-right: 15px;
    text-align: left;
}

.modal-desc-content h4 {
    color: #fff;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.modal-desc-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.modal-desc-content p {
    margin-bottom: 1rem;
}

/* Custom scrollbar para el modal */
.modal-desc-content::-webkit-scrollbar {
    width: 6px;
}
.modal-desc-content::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
}
.modal-desc-content::-webkit-scrollbar-thumb {
    background: var(--accent-orange);
    border-radius: 4px;
}

/* Botones de Donación Flotantes */
.donation-buttons {
    position: fixed;
    bottom: 30px;
    left: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 5; /* Se baja el z-index para que queden en la capa de inicio */
    align-items: flex-start;
}

.donation-buttons img {
    border-radius: 8px;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
}

.donation-buttons a {
    display: inline-block;
}

/* Ajustar color de Cafecito (requiere más rotación para llegar al naranja) */
.donation-buttons a:nth-child(1) img {
    filter: hue-rotate(45deg) saturate(2) brightness(0.95);
}

/* Ajustar color del botón de Ko-fi (de magenta a naranja Roply) */
.donation-buttons a:nth-child(2) img {
    filter: hue-rotate(20deg) saturate(1.5) brightness(0.9);
}

.donation-buttons a:hover img {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

/* Espaciado para la biografía */
.about-content p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}
.about-content p:last-child {
    margin-bottom: 0;
}

/* Partículas (Chirimbolos) */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%; /* Fix del descentrado (no usar vw) */
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Controles Inferiores Derechos */
.bottom-right-controls {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: flex-end;
    z-index: 5; /* <--- Se baja el z-index para que queden detrás de los paneles (que tienen 10) */
}

.snake-float-btn, .toggle-particles-btn {
    background: rgba(25, 25, 25, 0.6);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 87, 34, 0.2);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-size: 0.95rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: all 0.3s;
}

.snake-float-btn:hover, .toggle-particles-btn:hover {
    background: rgba(255, 87, 34, 0.2);
    color: #fff;
    border-color: var(--accent-orange);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 87, 34, 0.3);
}

.toggle-particles-btn.off {
    color: #777;
    text-decoration: line-through;
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(10, 10, 10, 0.6);
}

/* Visor de Imágenes (Lightbox) */
.zoomable-image {
    width: 96%;
    max-width: 96%;
    border-radius: 12px;
    cursor: zoom-in;
    margin: 1.5rem auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    display: block;
    object-fit: contain;
}

.zoomable-image:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    border-color: var(--accent-orange);
}

.lightbox-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(10px);
}

.lightbox-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.8);
    transform: scale(0.8);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.lightbox-overlay.active .lightbox-img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 3rem;
    cursor: pointer;
    transition: color 0.3s;
    line-height: 1;
}

.lightbox-close:hover {
    color: var(--accent-orange);
}

/* =========================================================================
   RESPONSIVIDAD (Móviles y Tablets)
   ========================================================================= */
@media (max-width: 900px) {
    /* Ocultar juegos y partículas (ahorro de batería y espacio en móviles) */
    #particle-canvas,
    .bottom-right-controls {
        display: none !important;
    }
    
    /* Escalar la tipografía principal */
    .brand-title {
        font-size: 3.5rem;
    }
    
    .brand-subtitle {
        font-size: 1.2rem;
        margin-bottom: 2rem;
    }
    
    /* Apilar menú principal verticalmente */
    .main-nav {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .nav-btn {
        width: 100%;
        max-width: 250px;
        padding: 0.8rem 1.5rem;
    }
    
    /* Paneles Laterales a ancho completo */
    .side-panel {
        width: 100%;
        padding: 2rem 1.5rem;
    }
    
    .panel-content h2 {
        font-size: 2.5rem;
        margin-bottom: 2rem;
    }
    
    /* Modal responsive */
    .modal-content {
        padding: 2rem;
        width: 95%;
    }
    
    /* Ajustar botones de donación en móviles */
    .donation-buttons {
        bottom: 15px;
        left: 15px;
        transform: scale(0.85);
        transform-origin: bottom left;
    }
    
    /* Formulario de Contacto */
    .form-input {
        max-width: 100%;
    }
}