/* ===================================
   SHARED UI COMPONENTS CSS
   Single source of truth for common UI elements
   =================================== */

/* CSS Variables for consistent theming */
:root {
    --vp-teal: #20c997;
    --vp-teal-dark: #1aa179;
    --vp-teal-light: #40d4aa;
    --vp-primary: #007bff;
    --vp-success: #28a745;
    --vp-warning: #ffc107;
    --vp-danger: #dc3545;
    --vp-dark: #343a40;
    --vp-light: #f8f9fa;
    --vp-border-radius: 0.375rem;
    --vp-box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --vp-transition: all 0.15s ease-in-out;
}

/* ===================================
   LOADING SPINNERS
   =================================== */
.vp-loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem 1rem;
    min-height: 200px;
}

.vp-spinner {
    width: 3rem;
    height: 3rem;
    border: 0.25rem solid var(--vp-light);
    border-top: 0.25rem solid var(--vp-teal);
    border-radius: 50%;
    animation: vp-spin 1s linear infinite;
}

@keyframes vp-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===================================
   LOAD MORE BUTTONS
   =================================== */
.vp-load-more-container {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
    padding: 1rem;
}

.vp-load-more-btn {
    background-color: var(--vp-teal);
    border-color: var(--vp-teal);
    color: white;
    padding: 0.75rem 2rem;
    font-weight: 500;
    border-radius: var(--vp-border-radius);
    transition: var(--vp-transition);
    border: 1px solid transparent;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.vp-load-more-btn:hover {
    background-color: var(--vp-teal-dark);
    border-color: var(--vp-teal-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--vp-box-shadow);
}

.vp-load-more-btn:disabled {
    background-color: #6c757d;
    border-color: #6c757d;
    color: white;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.vp-load-more-btn .spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.125rem;
}

/* ===================================
   BACK TO TOP BUTTON
   =================================== */
.vp-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    background-color: var(--vp-teal);
    border-color: var(--vp-teal);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--vp-transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: none;
    cursor: pointer;
}

.vp-back-to-top:hover {
    background-color: var(--vp-teal-dark);
    border-color: var(--vp-teal-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.vp-back-to-top:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(32, 201, 151, 0.25);
}

/* ===================================
   TOAST NOTIFICATIONS
   =================================== */
.vp-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1050;
    pointer-events: none;
}

.vp-toast {
    background-color: var(--vp-teal);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--vp-border-radius);
    margin-bottom: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 250px;
    pointer-events: auto;
    animation: vp-slideInRight 0.3s ease;
}

.vp-toast.vp-toast-success {
    background-color: var(--vp-success);
}

.vp-toast.vp-toast-warning {
    background-color: var(--vp-warning);
    color: var(--vp-dark);
}

.vp-toast.vp-toast-error {
    background-color: var(--vp-danger);
}

.vp-toast-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.vp-toast-message {
    flex: 1;
    font-weight: 500;
}

/* Toast animations */
@keyframes vp-slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes vp-slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ===================================
   SHARE BUTTONS
   =================================== */
.vp-share-btn {
    background-color: var(--vp-teal);
    border-color: var(--vp-teal);
    color: white;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    border-radius: var(--vp-border-radius);
    transition: var(--vp-transition);
    border: 1px solid transparent;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
}

.vp-share-btn:hover {
    background-color: var(--vp-teal-dark);
    border-color: var(--vp-teal-dark);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--vp-box-shadow);
}

.vp-share-btn i {
    font-size: 0.875rem;
}

/* ===================================
   SEARCH AND FILTER COMPONENTS
   =================================== */
.vp-search-input {
    border: 1px solid #dee2e6;
    border-radius: var(--vp-border-radius);
    padding: 0.5rem 0.75rem;
    transition: var(--vp-transition);
}

.vp-search-input:focus {
    border-color: var(--vp-teal);
    box-shadow: 0 0 0 0.2rem rgba(32, 201, 151, 0.25);
    outline: none;
}

.vp-filter-select {
    border: 1px solid #dee2e6;
    border-radius: var(--vp-border-radius);
    padding: 0.5rem 0.75rem;
    transition: var(--vp-transition);
    background-color: white;
}

.vp-filter-select:focus {
    border-color: var(--vp-teal);
    box-shadow: 0 0 0 0.2rem rgba(32, 201, 151, 0.25);
    outline: none;
}

/* ===================================
   RESPONSIVE UTILITIES
   =================================== */
@media (max-width: 768px) {
    .vp-back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .vp-toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
    }
    
    .vp-toast {
        min-width: auto;
        width: 100%;
    }
    
    .vp-load-more-container {
        margin: 1.5rem 0;
        padding: 0.5rem;
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.vp-fade-in {
    animation: vp-fadeIn 0.3s ease;
}

@keyframes vp-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.vp-slide-up {
    animation: vp-slideUp 0.3s ease;
}

@keyframes vp-slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ===================================
   COMPONENT COMBINATIONS
   =================================== */
.vp-card-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.vp-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}