/* ============================================
   LOADING STATES & ANIMATIONS
   ============================================ */

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 20px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-message {
    color: white;
    font-size: 16px;
    font-weight: 500;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    min-width: 280px;
    max-width: 90vw;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: #1f2937;
}

.toast-success {
    border-left: 4px solid #10b981;
}

.toast-error {
    border-left: 4px solid #ef4444;
}

.toast-warning {
    border-left: 4px solid #f59e0b;
}

.toast-info {
    border-left: 4px solid #3b82f6;
}

@media (max-width: 768px) {
    .toast {
        bottom: calc(72px + env(safe-area-inset-bottom));
    }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 12px;
}

.skeleton-paragraph {
    height: 12px;
    margin-bottom: 6px;
}

.skeleton-paragraph:last-child {
    width: 80%;
}

.skeleton-card {
    height: 120px;
    margin-bottom: 16px;
}

.skeleton-circle {
    border-radius: 50%;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

/* Button Loading State */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-loading .btn-text {
    visibility: hidden;
}

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Slide In Animation */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease;
}

/* Bounce Animation */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.bounce {
    animation: bounce 0.5s ease;
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Shimmer Effect */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

.shimmer {
    background: linear-gradient(
        to right,
        #f6f7f8 0%,
        #edeef1 20%,
        #f6f7f8 40%,
        #f6f7f8 100%
    );
    background-size: 800px 104px;
    animation: shimmer 1.5s infinite linear;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 4px;
    background: #e5e7eb;
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-bar-fill {
    height: 100%;
    background: #3b82f6;
    transition: width 0.3s ease;
}

.progress-bar-indeterminate {
    position: absolute;
    height: 100%;
    width: 30%;
    background: #3b82f6;
    animation: indeterminate 1.5s infinite;
}

@keyframes indeterminate {
    0% {
        left: -30%;
    }
    100% {
        left: 100%;
    }
}

/* Dots Loading */
.dots-loading {
    display: inline-flex;
    gap: 4px;
}

.dots-loading span {
    width: 8px;
    height: 8px;
    background: currentColor;
    border-radius: 50%;
    animation: dots-bounce 1.4s infinite ease-in-out;
}

.dots-loading span:nth-child(1) {
    animation-delay: -0.32s;
}

.dots-loading span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes dots-bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Spinner Variations */
.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 64px;
    height: 64px;
    border-width: 6px;
}

.spinner-primary {
    border-color: rgba(59, 130, 246, 0.3);
    border-top-color: #3b82f6;
}

.spinner-white {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: white;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
}

.empty-state-icon {
    font-size: 64px;
    color: #d1d5db;
    margin-bottom: 16px;
}

.empty-state-title {
    font-size: 20px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 8px;
}

.empty-state-description {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 24px;
}

/* Error State */
.error-state {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 16px;
    display: flex;
    align-items: start;
    gap: 12px;
}

.error-state-icon {
    color: #ef4444;
    font-size: 24px;
    flex-shrink: 0;
}

.error-state-content {
    flex: 1;
}

.error-state-title {
    font-weight: 600;
    color: #991b1b;
    margin-bottom: 4px;
}

.error-state-message {
    font-size: 14px;
    color: #dc2626;
}

/* Success State */
.success-state {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 16px;
    display: flex;
    align-items: start;
    gap: 12px;
}

.success-state-icon {
    color: #10b981;
    font-size: 24px;
    flex-shrink: 0;
}

/* Lazy Load Placeholder */
.lazy-placeholder {
    background: #f3f4f6;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-center;
}

.lazy-placeholder::after {
    content: 'Yükleniyor...';
    color: #9ca3af;
    font-size: 14px;
}

/* Image Loading */
img[data-src] {
    filter: blur(5px);
    transition: filter 0.3s;
}

img[data-src].loaded {
    filter: blur(0);
}