@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;700;900&family=Space+Grotesk:wght@300;500;700&display=swap');

:root {
    --bg-color: #050505;
    --card-bg: rgba(255, 255, 255, 0.03);
    --accent-color: #0071e3;
    --cyan-glow: #00f2ff;
    --text-primary: #f5f5f7;
    --text-secondary: rgba(245, 245, 247, 0.6);
    --transition-timing: cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
}

/* --- NAVBAR --- */
header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 65%;
    z-index: 1000;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 1rem 10%;
}

.logo a { 
    font-size: 1.2rem; 
    font-weight: 900; 
    color: var(--text-primary); 
    text-decoration: none; 
    letter-spacing: -1px; 
}
.logo span { color: var(--accent-color); }

.nav-links a { 
    text-decoration: none; 
    color: var(--text-secondary); 
    font-size: 0.9rem; 
    transition: 0.3s; 
}
.nav-links a:hover { color: var(--accent-color); }

/* --- MAIN WRAPPER --- */
.projects-wrapper {
    padding: 120px 10% 60px;
    min-height: 100vh;
}

.tech-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 3rem;
    background: linear-gradient(90deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -2px;
}

/* --- BENTO GRID --- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 250px;
    gap: 1.5rem;
    transition: transform 0.8s var(--transition-timing), opacity 0.8s var(--transition-timing);
}

.project-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: transform 0.6s var(--transition-timing), 
                box-shadow 0.6s var(--transition-timing),
                opacity 0.6s var(--transition-timing);
}

/* Bento Sizes */
.project-card.large { grid-column: span 2; grid-row: span 2; }
.project-card.medium { grid-column: span 2; grid-row: span 1; }
.project-card.tall { grid-column: span 1; grid-row: span 2; }

/* States for "Disappearing" */
.bento-grid.faded { opacity: 0; pointer-events: none; transform: scale(0.95); }
.project-card.hidden { opacity: 0; transform: scale(0.9) translateY(20px); }

/* Card Elements */
.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.card-bg video, .card-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    transition: opacity 0.6s, transform 0.6s;
    filter: grayscale(100%);
}

.project-card:hover .card-bg video, .project-card:hover .card-bg img {
    opacity: 0.8;
    transform: scale(1.05);
    filter: grayscale(0%);
}

.card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    z-index: 2;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.category {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.project-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
}

.description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    max-width: 280px;
    opacity: 0;
    transform: translateY(10px);
    transition: 0.4s var(--transition-timing);
}

.project-card:hover .description {
    opacity: 1;
    transform: translateY(0);
}

/* Placeholder Styling */
.placeholder-bg {
    background: radial-gradient(circle at center, #111, #050505);
}
.circuit-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--accent-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.1;
}

/* --- OVERLAY --- */
.project-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(5, 5, 5, 0.98);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s var(--transition-timing), visibility 0.6s;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    overflow-y: auto; /* Permite scroll si el contenido es muy alto */
}

.project-overlay.active {
    opacity: 1;
    visibility: visible;
}

.close-btn {
    position: fixed; /* Cambiado a fixed para que no se mueva con el scroll */
    top: 30px;
    right: 40px;
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    z-index: 2005;
    transition: 0.3s;
}
.close-btn:hover { color: var(--accent-color); transform: rotate(90deg); }

.overlay-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    max-width: 1100px; /* Un poco más estrecho para centrar mejor */
    width: 95%;
    margin: auto; /* Ayuda a centrar verticalmente cuando hay scroll */
    transform: translateY(40px);
    transition: transform 0.8s var(--transition-timing);
}

.project-overlay.active .overlay-content {
    transform: translateY(0);
}

.overlay-video {
    width: 100%;
    display: flex;
    align-items: center;
}

.overlay-video video, 
.overlay-video img {
    width: 100%;
    height: auto;
    max-height: 70vh;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    object-fit: contain;
    filter: none !important; /* Force color in overlay */
    opacity: 1 !important;
}

.overlay-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.overlay-info h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem); /* Escala dinámica del título */
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.overlay-category {
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    display: block;
}

.overlay-description {
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    line-height: 1.6;
    color: var(--text-secondary);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .overlay-content { 
        grid-template-columns: 1fr; 
        gap: 2rem;
        padding-top: 60px; /* Espacio para el botón de cerrar */
    }
    .overlay-video video { max-height: 50vh; }
    .overlay-info { text-align: center; }
}

@media (max-width: 768px) {
    header { left: 45%; }
    .navbar { padding: 1rem 5%; }
    .projects-wrapper { padding: 100px 5% 40px; }
    .bento-grid { grid-template-columns: 1fr; grid-auto-rows: auto; }
    .project-card.large, .project-card.medium, .project-card.tall { grid-column: span 1; grid-row: span 1; height: 350px; }
}

/* --- BUTTONS --- */
.btn-link3 {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.9rem;
    transition: 0.3s var(--transition-timing);
    border: none;
    cursor: pointer;
}

.btn-link3:hover {
    background: #0077ed;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0, 113, 227, 0.4);
}

.btn-link3 i {
    margin-left: 8px;
    font-size: 0.8rem;
}