:root {
    --bg-color: #111111; /* Fondo del celular (oscuro) */
    --card-bg: #222222;
    --text-main: #ffffff;
    --text-muted: #aaaaaa;
    --primary-btn: #D4AF37; /* Tu dorado */
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #000000; /* Fondo de la PC súper oscuro para que el celular resalte */
    display: flex;
    justify-content: center;
}

/* LA CAJA DEL CELULAR */
.mobile-container {
    width: 100%;
    max-width: 414px; /* Tamaño estricto de celular */
    min-height: 100vh;
    background-color: var(--bg-color);
    position: relative;
    overflow-x: hidden;
    /* Un pequeño borde para que parezca un celular físico en la PC */
    border-left: 1px solid #333; 
    border-right: 1px solid #333;
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.1); 
    color: var(--text-main);
}

.view {
    display: none;
    padding: 20px;
}
.view.active {
    display: block;
}

/* --- ESTILOS DE LA GALERÍA --- */
.profile-header {
    text-align: center;
    padding: 30px 0 20px;
}
.profile-pic {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-btn);
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.3);
}
.profile-header h2 {
    margin: 10px 0 5px;
    color: var(--primary-btn);
    font-size: 1.2rem;
}
.profile-header p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Galería Masonry */
.masonry-grid {
    column-count: 2;
    column-gap: 10px;
    padding-bottom: 80px;
}
.grid-item {
    break-inside: avoid;
    margin-bottom: 10px;
}
.grid-item img {
    width: 100%;
    border-radius: 12px;
    display: block;
}

/* Estilos de Etiquetas del Demo */
.demo-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}
.demo-etiqueta {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 10px;
    font-size: 0.8rem;
    font-weight: bold;
    text-align: center;
    box-sizing: border-box;
    border-top: 1px solid var(--primary-btn);
}

/* Botón Flotante (Tu Dorado Original) */
.fab-container {
    position: fixed;
    bottom: 30px;
    /* La magia para que el botón no se salga de la "pantalla" del celular en la PC */
    right: max(20px, calc(50% - 187px)); 
}
.fab-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-btn);
    color: #111;
    border: none;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.4);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Menú de Subida */
.top-nav { padding: 10px 0 30px; }
.back-btn { background: none; border: none; color: var(--primary-btn); font-size: 1rem; font-weight: bold; cursor: pointer; }
.upload-options { display: flex; flex-direction: column; gap: 20px; }
.upload-card { background-color: var(--card-bg); border-radius: 20px; padding: 30px 20px; text-align: center; border: 1px solid #333; cursor: pointer; }
.upload-icon { font-size: 2.5rem; color: var(--primary-btn); margin-bottom: 15px; }
.upload-card h3 { margin: 0 0 5px; color: var(--text-main); }
.upload-card p { margin: 0; color: var(--text-muted); font-size: 0.85rem; }

/* --- ESTILOS DE LA PANTALLA DE SUBIDA --- */
.top-nav {
    padding: 10px 0 30px;
}
.back-btn {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
}

.upload-options {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.upload-card {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 8px 15px rgba(0,0,0,0.05);
    cursor: pointer;
    transition: transform 0.2s;
}
.upload-card:active {
    transform: scale(0.98);
}
.upload-icon {
    font-size: 2.5rem;
    color: #6c757d;
    margin-bottom: 15px;
}
.upload-card h3 {
    margin: 0 0 5px;
    color: var(--text-main);
}
.upload-card p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- ESTILOS EXCLUSIVOS PARA EL DEMO --- */
.demo-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.demo-etiqueta {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7); /* Fondo oscuro semitransparente */
    color: #fff;
    padding: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    box-sizing: border-box;
    backdrop-filter: blur(4px); /* Efecto de cristal */
}