/* ============================================
   Loading State Styles - PeakTabien
   ============================================ */

/* Loading Overlay Container */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* Loading Container */
.loading-container {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 400px;
    width: 90%;
    animation: slideInUp 0.4s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading Spinner */
.loading-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    position: relative;
    animation: spin 1.5s linear infinite;
}

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

/* Spinner Ring */
.loading-spinner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 4px solid #f0f0f0;
    border-top: 4px solid #f1c40f;
    border-right: 4px solid #f39c12;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(241, 196, 15, 0.3);
}

/* Loading Text */
.loading-text {
    font-family: 'Kanit', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 15px 0 10px;
    letter-spacing: 0.5px;
}

/* Loading Subtext */
.loading-subtext {
    font-family: 'Kanit', sans-serif;
    font-size: 0.9rem;
    color: #7f8c8d;
    margin: 0;
    animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* Animated Dots */
.loading-dots {
    display: inline-block;
    margin-left: 5px;
}

.loading-dots::after {
    content: '.';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60% {
        content: '...';
    }
    80%, 100% {
        content: '';
    }
}

/* Loading Bar (Progress) */
.loading-bar {
    width: 100%;
    height: 4px;
    background: #e0e0e0;
    border-radius: 2px;
    margin-top: 20px;
    overflow: hidden;
}

.loading-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #f1c40f, #f39c12, #e67e22);
    border-radius: 2px;
    animation: progressBar 2s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(241, 196, 15, 0.5);
}

@keyframes progressBar {
    0% {
        width: 0%;
    }
    50% {
        width: 80%;
    }
    100% {
        width: 100%;
    }
}

/* Loading Badge (for inline loading) */
.loading-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: none;
    animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mini Spinner for Badge */
.loading-badge-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(44, 62, 80, 0.2);
    border-top: 2px solid #2c3e50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Loading Skeleton Enhancements */
.skeleton-container {
    animation: fadeIn 0.3s ease-in;
}

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

.skeleton-card {
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* Loading State for Button */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .loading-container {
        padding: 30px 20px;
        max-width: 300px;
    }

    .loading-spinner {
        width: 50px;
        height: 50px;
    }

    .loading-text {
        font-size: 1rem;
    }

    .loading-subtext {
        font-size: 0.85rem;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .loading-container {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
        color: #ecf0f1;
    }

    .loading-text {
        color: #ecf0f1;
    }

    .loading-subtext {
        color: #bdc3c7;
    }

    .loading-bar {
        background: #34495e;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .loading-overlay,
    .loading-container,
    .loading-spinner,
    .loading-bar-fill,
    .loading-badge,
    .skeleton-card {
        animation: none;
    }

    .loading-spinner::before {
        border-top-color: #f1c40f;
    }
}