/* =====================================================
   PiCuba.css — Estilos del Editor de Imágenes PiCuba
   Usa variables de tema (--ce-*) para adaptarse al perfil del usuario
   ===================================================== */

/* ── Cuadrícula de transparencia (estilo Photoshop) ── */
.picuba-transparent-bg {
    background-image:
        linear-gradient(45deg, #ccc 25%, transparent 25%),
        linear-gradient(-45deg, #ccc 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #ccc 75%),
        linear-gradient(-45deg, transparent 75%, #ccc 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #fff;
}

/* Cuando hay fondo aplicado, ocultar cuadrícula */
.picuba-has-bg.picuba-transparent-bg {
    background-image: none;
}

/* ── Panel principal PiCuba ── */
#PiCuba {
    width: 100%;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--ce-bg, #f4fbf4);
    color: var(--ce-text, #0d3d0d);
    padding: 2rem 1rem;
    transition: background .3s ease, color .3s ease;
}

.picuba-home {
    width: 100%;
    max-width: 600px;
}

.picuba-header {
    text-align: center;
    margin-bottom: 2rem;
}

.picuba-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ce-text, #0d3d0d);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

.picuba-subtitle {
    font-size: 0.95rem;
    color: var(--ce-muted, rgba(13,61,13,.55));
    margin: 0;
}

/* ── Botones de acción ── */
.picuba-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.picuba-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--ce-border, rgba(0,187,0,.25));
    border-radius: 12px;
    background: var(--ce-surface, #ffffff);
    color: var(--ce-text, #0d3d0d);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.picuba-btn:active,
.picuba-btn:hover {
    background: rgba(var(--ce-accent-rgb, 0,170,0), 0.12);
    border-color: var(--ce-accent, #00aa00);
    transform: translateY(-1px);
}

.picuba-btn-icon {
    font-size: 1.2em;
}

/* ── Grilla de diseños ── */
.picuba-designs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1rem;
    width: 100%;
}

.picuba-design-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--ce-surface, #ffffff);
    border: 1px solid var(--ce-border, rgba(0,187,0,.25));
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

.picuba-design-card:active,
.picuba-design-card:hover {
    border-color: var(--ce-accent, #00aa00);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(var(--ce-accent-rgb, 0,170,0), 0.15);
}

.picuba-design-thumb {
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* Cuadrícula de transparencia en las miniaturas */
    background-image:
        linear-gradient(45deg, #ddd 25%, transparent 25%),
        linear-gradient(-45deg, #ddd 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #ddd 75%),
        linear-gradient(-45deg, transparent 75%, #ddd 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0;
    background-color: #f0f0f0;
}

.picuba-design-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.picuba-design-placeholder {
    font-size: 2.5rem;
    opacity: 0.4;
}

.picuba-design-info {
    padding: 0.5rem 0.75rem;
}

.picuba-design-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ce-text, #0d3d0d);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Estado vacío ── */
.picuba-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--ce-muted, rgba(13,61,13,.55));
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.picuba-empty-icon {
    font-size: 3rem;
    opacity: 0.5;
}

/* ── Brand mark PiCuba dentro del editor ── */
.cePiCubaBrand {
    display: flex;
    align-items: center;
    gap: 0.4em;
    font-weight: 700;
    font-size: 0.85em;
    color: var(--ce-accent, #00aa00);
    opacity: 0.85;
    pointer-events: none;
}