/* CSS Custom Properties for theming */
:root {
    --primary-color: #1b6ec2;
    --primary-hover: #1861ac;
    --link-color: #006bb7;
    --success-color: #26b050;
    --danger-color: #e50000;
    --focus-shadow: 0 0 0 0.25rem #258cfb;
    --bg: #ffffff;
    --surface: #f8f9fa;
    --text: #212529;
    --muted: #6c757d;
    --border: #dee2e6;
}

/* Dark mode variables */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0a0a1a;
        --surface: #1a202c;
        --text: #e2e8f0;
        --muted: #94a3b8;
        --border: #4a5568;
    }
}

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

* {
    box-sizing: border-box;
}

/* Reset and normalize */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 1rem 0;
    font-weight: 600;
    line-height: 1.2;
    color: var(--text);
}

p {
    margin: 0 0 1rem 0;
}

/* Link styles */
a, .btn-link {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.15s ease-in-out;
}

a:hover, .btn-link:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    text-decoration: none;
    gap: 6px;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-primary {
    color: #fff;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: #fff;
}

.btn-secondary {
    color: var(--text);
    background-color: var(--surface);
    border-color: var(--border);
}

.btn-secondary:hover {
    background-color: var(--muted);
    border-color: var(--muted);
    color: #fff;
}

.icon-btn {
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.icon-btn:hover {
    background-color: var(--surface);
    border-color: var(--muted);
}

/* Focus styles */
.btn:focus, 
.btn:active:focus, 
.btn-link.nav-link:focus, 
.form-control:focus, 
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, var(--focus-shadow);
    outline: none;
}

/* Form styles */
.form-control {
    background-color: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px;
    padding: 8px 12px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-control::placeholder {
    color: var(--muted);
}

/* Content area */
.content {
    padding-top: 1.1rem;
    flex: 1;
}

/* Focus management */
h1:focus {
    outline: none;
}

/* Form validation */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--success-color);
}

.invalid {
    outline: 1px solid var(--danger-color);
}

.validation-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Error boundary */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: 6px;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

/* Form enhancements */
.darker-border-checkbox.form-check-input {
    border-color: var(--border);
}

.form-floating > .form-control-plaintext::placeholder, 
.form-floating > .form-control::placeholder {
    color: var(--muted);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, 
.form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* Utility classes */
.w-100 {
    width: 100%;
}

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

.text-muted {
    color: var(--muted);
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mt-3 {
    margin-top: 1rem;
}

/* Card component */
.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.card-header {
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem;
    border-radius: 8px 8px 0 0;
    margin: -1rem -1rem 1rem -1rem;
}

.card-body {
    padding: 0;
}

/* Navigation improvements */
.nav {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin-bottom: 0;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text);
    text-decoration: none;
    transition: color 0.15s ease-in-out;
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--surface);
}

.nav-link.active {
    color: var(--primary-color);
    background-color: var(--surface);
    font-weight: 600;
}

/* Table improvements */
.table {
    width: 100%;
    margin-bottom: 1rem;
    color: var(--text);
    background-color: transparent;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem;
    vertical-align: top;
    border-top: 1px solid var(--border);
}

.table thead th {
    vertical-align: bottom;
    border-bottom: 2px solid var(--border);
    background-color: var(--surface);
    font-weight: 600;
}

/* Responsive utilities */
@media (max-width: 576px) {
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .content {
        padding: 0.5rem;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

/* Print styles */
@media print {
    .btn,
    .nav,
    .sidebar {
        display: none !important;
    }
    
    .content {
        padding: 0 !important;
    }
}

/* Center Focus Carousel Styles */
.center-focus-carousel {
    margin: 2rem 0 3rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.carousel-track {
    position: relative;
    padding: 2rem 0;
}

.carousel-slide-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    position: relative;
    min-height: 320px;
}

.main-slide {
    position: relative;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: scale(1);
    transition: all 0.5s ease;
}

.main-slide img {
    max-width: 380px;
    max-height: 250px;
    width: 100%;
    object-fit: contain;
    border-radius: 12px;
    border: 3px solid white;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.main-slide img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
    border-color: rgba(255, 255, 255, 0.9);
}

.preview-slide {
    position: relative;
    z-index: 2;
    cursor: pointer;
    transform: scale(0.65);
    opacity: 0.5;
    transition: all 0.4s ease;
}

.preview-slide:hover {
    transform: scale(0.7);
    opacity: 0.75;
}

.preview-slide img {
    max-width: 240px;
    max-height: 160px;
    width: 100%;
    object-fit: contain;
    border-radius: 8px;
    border: 2px solid white;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    filter: grayscale(30%);
    transition: all 0.3s ease;
}

.preview-slide:hover img {
    filter: grayscale(0%);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.8);
}

.left-preview {
    margin-right: -0.5rem;
}

.right-preview {
    margin-left: -0.5rem;
}

.slide-title {
    margin-top: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
    text-align: center;
}

.slide-title h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.5px;
    text-align: center;
    padding: 0.5rem 0;
    background: transparent;
    border: none;
    box-shadow: none;
    border-radius: 0;
}

.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.4rem;
    color: var(--primary-color);
    transition: all 0.3s ease;
    z-index: 4;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-arrow:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(27, 110, 194, 0.4);
}

.left-arrow {
    left: -24px;
}

.right-arrow {
    right: -24px;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-top: 2rem;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.4);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.indicator.active {
    background: white;
    border-color: white;
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.indicator.active::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: indicatorPulse 2s infinite;
}

.indicator:hover {
    transform: scale(1.2);
    border-color: rgba(255, 255, 255, 0.8);
}

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

@keyframes indicatorPulse {
    0% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
    100% {
        opacity: 0.3;
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .center-focus-carousel {
        margin: 1.5rem 0 2rem 0;
        padding: 0 1rem;
    }
    
    .carousel-slide-group {
        gap: 1rem;
        min-height: 250px;
    }
    
    .main-slide img {
        max-width: 280px;
        max-height: 180px;
    }
    
    .preview-slide {
        transform: scale(0.5);
    }
    
    .preview-slide:hover {
        transform: scale(0.55);
    }
    
    .preview-slide img {
        max-width: 180px;
        max-height: 120px;
    }
    
    .nav-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .left-arrow {
        left: -10px;
    }
    
    .right-arrow {
        right: -10px;
    }
    
    .slide-title h3 {
        font-size: 1.1rem;
    }
    
    .left-preview, .right-preview {
        margin: 0;
    }
}

@media (max-width: 480px) {
    .carousel-slide-group {
        flex-direction: column;
        gap: 0.5rem;
        min-height: 220px;
    }
    
    .preview-slide {
        display: none;
    }
    
    .main-slide img {
        max-width: 260px;
        max-height: 160px;
    }
    
    .nav-arrow {
        top: 35%;
    }
    
    .slide-title h3 {
        font-size: 1rem;
    }
}