/**
 * MAJOTUBEUNAIDEA - Inventos Page Styles (Premium Edition v4.0)
 * Rediseño premium de la navegación por categorías y layout de inventos
 */

/* ============================================
   INVENTOS HERO (Premium)
   ============================================ */
.inventos-hero {
    padding: calc(var(--header-height) + var(--safe-top) + var(--space-16)) 5% var(--space-12);
    background:
        linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-dark) 100%),
        radial-gradient(ellipse at 50% 0%, rgba(255, 45, 85, 0.1), transparent 70%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.inventos-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 45, 85, 0.03) 0%, transparent 70%);
    animation: slowRotate 60s linear infinite;
}

@keyframes slowRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.inventos-hero__title {
    font-size: clamp(2rem, 8vw, 4.5rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--space-4);
    position: relative;
}

.inventos-hero__title span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.inventos-hero__description {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   INVENTOS LAYOUT (Premium)
   ============================================ */
.inventos-layout {
    display: flex;
    flex-direction: column;
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0 5%;
}

/* ============================================
   FILTER BAR (Premium Horizontal)
   ============================================ */
.filter-bar {
    position: sticky;
    top: calc(var(--header-height) + var(--safe-top));
    z-index: calc(var(--z-fixed) - 1);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: var(--space-4) 0;
    margin-bottom: var(--space-10);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

/* Offset correction when header is scrolled */
.header.scrolled + main .filter-bar {
    top: calc(var(--header-height-scrolled) + var(--safe-top));
}

.filter-bar__title {
    display: none;
}

.filter-bar__group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-3);
    overflow-x: auto;
    scrollbar-width: none;
    padding: 0 var(--space-4);
}

.filter-bar__group::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    flex: 0 0 auto;
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-spring);
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.filter-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.filter-btn.active::before {
    opacity: 0;
}

/* ============================================
   INVENTOS GRID (Premium)
   ============================================ */
.inventos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-8);
    padding-bottom: calc(var(--space-20) + var(--safe-bottom));
}

/* ============================================
   INVENTO CARD (Premium)
   ============================================ */
.invento-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
    position: relative;
}

.invento-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 102, 255, 0.08), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.invento-card:hover {
    transform: translateY(-12px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.invento-card:hover::after {
    opacity: 1;
}

.invento-card__media {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.invento-card__media::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 1;
}

.invento-card:hover .invento-card__media::before {
    opacity: 0.1;
}

.invento-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.invento-card:hover .invento-card__image {
    transform: scale(1.1);
}

.invento-card__category {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 2;
}

.invento-card__body {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.invento-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.invento-card:hover .invento-card__title {
    color: var(--color-primary);
}

.invento-card__description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    flex: 1;
}

.invento-card__meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.meta-item__label {
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--text-muted);
    font-weight: var(--font-weight-bold);
}

.meta-item__value {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.invento-card__footer {
    padding: var(--space-4) var(--space-6);
    background: var(--glass-bg-light);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.invento-card__difficulty {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.invento-card__difficulty-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS (Premium)
   ============================================ */
@media (max-width: 1024px) {
    .filter-bar__group {
        justify-content: flex-start;
        padding-left: 5%;
        padding-right: 5%;
        mask-image: linear-gradient(to right, black 90%, transparent 100%);
        -webkit-mask-image: linear-gradient(to right, black 90%, transparent 100%);
    }

    .inventos-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .inventos-hero {
        padding-top: calc(var(--header-height) + var(--safe-top) + var(--space-10));
        padding-bottom: var(--space-8);
    }

    .filter-bar {
        padding: var(--space-3) 0;
        margin-bottom: var(--space-6);
    }

    .filter-btn {
        padding: var(--space-2) var(--space-4);
        font-size: 10px;
        min-height: 40px;
    }

    .inventos-grid {
        grid-template-columns: 1fr;
        padding: 0 var(--space-4);
    }
}

/* ============================================
   IOS MOMENTUM SCROLLING
   ============================================ */
@supports (-webkit-overflow-scrolling: touch) {
    .filter-bar__group {
        -webkit-overflow-scrolling: touch;
    }
}