/**
 * Micro-interactions CSS
 * Lightweight animations and UI enhancements
 * Part of the UI/UX Redesign - Premium Feel Without Performance Impact
 */

/* ========================================
   SKELETON LOADERS
   ======================================== */

.skeleton {
    background: linear-gradient(90deg,
            var(--bg-tertiary, #f0f0f0) 25%,
            var(--bg-secondary, #e0e0e0) 50%,
            var(--bg-tertiary, #f0f0f0) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm, 4px);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-card {
    height: 200px;
    border-radius: var(--radius-lg, 12px);
}

.skeleton-table-row {
    height: 50px;
    margin-bottom: 8px;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */

.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    min-width: 300px;
    max-width: 400px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid;
    animation: toast-slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.toast.toast-success {
    border-left-color: var(--success);
}

.toast.toast-error {
    border-left-color: var(--danger);
}

.toast.toast-warning {
    border-left-color: var(--warning);
}

.toast.toast-info {
    border-left-color: var(--info);
}

.toast-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

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

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

.toast-warning .toast-icon {
    color: var(--warning);
}

.toast-info .toast-icon {
    color: var(--info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.toast-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    font-size: 1.25rem;
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--text-primary);
}

@keyframes toast-slide-in {
    from {
        transform: translateX(400px);
        opacity: 0;
    }

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

.toast.toast-exit {
    animation: toast-slide-out 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes toast-slide-out {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* ========================================
   MODAL TRANSITIONS
   ======================================== */

.modal.fade .modal-dialog {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease-out;
    transform: scale(0.95) translateY(-20px);
    opacity: 0;
}

.modal.show .modal-dialog {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.modal-backdrop.fade {
    transition: opacity 0.3s ease-out;
}

/* ========================================
   ENHANCED HOVER STATES
   ======================================== */

.btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:active {
    transform: scale(0.98);
}

.card {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

/* ========================================
   FOCUS RINGS (Accessibility)
   ======================================== */

.btn:focus,
.form-control:focus,
.form-select:focus,
a:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px var(--accent-light);
}

/* Remove default focus for mouse users */
.btn:focus:not(:focus-visible),
.form-control:focus:not(:focus-visible),
.form-select:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}

/* ========================================
   INLINE VALIDATION
   ======================================== */

.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--success);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%232eca6a' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger);
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.invalid-feedback,
.valid-feedback {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    animation: feedback-slide-down 0.3s ease-out;
}

.invalid-feedback {
    color: var(--danger);
}

.valid-feedback {
    color: var(--success);
}

@keyframes feedback-slide-down {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

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

/* ========================================
   LOADING SPINNER
   ======================================== */

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spinner-rotate 0.6s linear infinite;
}

@keyframes spinner-rotate {
    to {
        transform: rotate(360deg);
    }
}

.btn .spinner {
    margin-right: 0.5rem;
}

/* ========================================
   BADGE ANIMATIONS
   ======================================== */

.badge {
    animation: badge-pop-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes badge-pop-in {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========================================
   SMOOTH SCROLLING
   ======================================== */

html {
    scroll-behavior: smooth;
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ========================================
   RIPPLE EFFECT (Optional)
   ======================================== */

.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 200px;
    height: 200px;
    transition: 0s;
}