/**
 * Empty State Patterns
 * Academia Design System Component
 * 
 * Usage:
 * <div class="empty-state">
 *   <div class="empty-state__icon">
 *     <i class="ph ph-folder-open"></i>
 *   </div>
 *   <h3 class="empty-state__title">No items found</h3>
 *   <p class="empty-state__description">Get started by creating your first item.</p>
 *   <button class="empty-state__action btn btn-primary">Create Item</button>
 * </div>
 */

/* ========================================
   Empty State Container
   ======================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 24px;
    min-height: 300px;
    max-width: 400px;
    margin: 0 auto;
}

.empty-state--compact {
    padding: 24px 16px;
    min-height: 200px;
}

.empty-state--fullscreen {
    min-height: 60vh;
}

/* ========================================
   Empty State Icon
   ======================================== */
.empty-state__icon {
    width: 96px;
    height: 96px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    background: var(--color-glass-bg, rgba(255, 255, 255, 0.05));
    border-radius: 50%;
    border: 1px solid var(--color-glass-border, rgba(255, 255, 255, 0.1));
}

.empty-state__icon i,
.empty-state__icon svg {
    font-size: 3rem;
    color: var(--color-text-muted, rgba(255, 255, 255, 0.5));
}

.empty-state--compact .empty-state__icon {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
}

.empty-state--compact .empty-state__icon i,
.empty-state--compact .empty-state__icon svg {
    font-size: 2rem;
}

/* MIA illustration variant */
.empty-state__mia {
    width: 120px;
    height: 120px;
    margin-bottom: 24px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 0 40px var(--color-primary-glow, rgba(45, 184, 76, 0.3));
}

/* ========================================
   Empty State Text
   ======================================== */
.empty-state__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary, #ffffff);
    margin: 0 0 8px;
    line-height: 1.3;
}

.empty-state__description {
    font-size: 0.95rem;
    color: var(--color-text-muted, rgba(255, 255, 255, 0.7));
    margin: 0 0 24px;
    line-height: 1.5;
    max-width: 320px;
}

.empty-state--compact .empty-state__title {
    font-size: 1rem;
}

.empty-state--compact .empty-state__description {
    font-size: 0.875rem;
    margin-bottom: 16px;
}

/* ========================================
   Empty State Actions
   ======================================== */
.empty-state__action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    background: var(--color-primary, #2DB84C);
    border: none;
    border-radius: var(--radius-md, 12px);
    cursor: pointer;
    transition: all 0.3s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
}

.empty-state__action:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(45, 184, 76, 0.4);
}

.empty-state__action:focus-visible {
    outline: 2px solid var(--color-primary, #2DB84C);
    outline-offset: 2px;
}

.empty-state__action--secondary {
    background: transparent;
    color: var(--color-primary, #2DB84C);
    border: 1px solid var(--color-primary, #2DB84C);
}

.empty-state__action--secondary:hover {
    background: var(--color-primary, #2DB84C);
    color: #ffffff;
}

/* Multiple actions */
.empty-state__actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

/* ========================================
   Empty State Variants
   ======================================== */

/* Error state */
.empty-state--error .empty-state__icon {
    border-color: rgba(255, 107, 107, 0.3);
}

.empty-state--error .empty-state__icon i {
    color: #FF6B6B;
}

/* Search no results */
.empty-state--search .empty-state__icon i {
    color: var(--color-accent-gold, #FFD700);
}

/* Offline state */
.empty-state--offline .empty-state__icon {
    border-color: rgba(255, 215, 0, 0.3);
}

.empty-state--offline .empty-state__icon i {
    color: var(--color-accent-gold, #FFD700);
}

/* ========================================
   Animations
   ======================================== */
.empty-state {
    animation: empty-state-fade-in 0.4s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1)) forwards;
}

@keyframes empty-state-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.empty-state__icon {
    animation: empty-state-icon-bounce 0.6s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1)) 0.2s forwards;
    opacity: 0;
    transform: scale(0.8);
}

@keyframes empty-state-icon-bounce {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    50% {
        transform: scale(1.05);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {

    .empty-state,
    .empty-state__icon {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* ========================================
   Mobile Responsiveness
   ======================================== */
@media (max-width: 480px) {
    .empty-state {
        padding: 32px 16px;
        min-height: 250px;
    }

    .empty-state__icon {
        width: 80px;
        height: 80px;
    }

    .empty-state__icon i {
        font-size: 2.5rem;
    }

    .empty-state__title {
        font-size: 1.1rem;
    }

    .empty-state__description {
        font-size: 0.9rem;
    }
}