:root {

    --bg-base: #f7f9f6;          
    --bg-card: #ffffff;
    --border-color: #d1d8d0;     
    --border-light: #e5eae3;

    --color-primary: #2d5a27;    
    --color-primary-rgb: 45, 90, 39;
    --color-secondary: #588157;  
    --color-accent: #708090;     
    --color-success: #2e7d32;
    --color-error: #c62828;

    --text-title: #1b3317;       
    --text-body: #2d372c;
    --text-muted: #5e6b5c;

    --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --transition-normal: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-base);
    color: var(--text-body);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.academic-container {
    width: 100%;
    max-width: 1250px;
    margin: 0 auto;
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    flex: 1;
}

.academic-header {
    text-align: center;
    border-bottom: 1px solid rgba(45, 90, 39, 0.35);
    padding-bottom: 0.75rem;
    margin-bottom: 0rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.institution-meta {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-secondary);
    margin-bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.institution-meta .divider {
    color: var(--border-color);
}

.portal-badge {
    display: inline-block;
    background: #e8f5e9;
    color: var(--color-primary);
    border: 1px solid rgba(45, 90, 39, 0.2);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
}

.paper-title {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-title);
    max-width: 1000px;
    margin: 0.25rem auto;
    letter-spacing: -0.01em;
}

.author-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-body);
    margin-bottom: 0;
    flex-wrap: wrap;
}

.author-meta strong {
    color: var(--color-primary);
}

.portal-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.5rem;
    align-items: start;
}

@media (max-width: 992px) {
    .portal-grid {
        grid-template-columns: 1fr;
    }
}

.grid-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-title);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title i {
    color: var(--color-secondary);
    font-size: 1rem;
}

.card-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: -0.5rem;
}

.form-group select {
    width: 100%;
    background-color: #fafbfc;
    border: 1px solid var(--border-color);
    color: var(--text-body);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    outline: none;
    transition: all var(--transition-normal);
}

.form-group select:focus {
    border-color: var(--color-primary);
    background-color: #ffffff;
    box-shadow: 0 0 0 2px rgba(45, 90, 39, 0.1);
}

.spec-table {
    display: flex;
    flex-direction: column;
    border-top: 1.5px solid var(--text-title); 
    border-bottom: 1.5px solid var(--text-title); 
    padding: 0.5rem 0;
    background: #fafbfc;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0.75rem;
    font-size: 0.85rem;
}

.spec-row:not(:last-child) {
    border-bottom: 1px solid var(--border-light); 
}

.spec-label {
    font-weight: 500;
    color: var(--text-muted);
}

.spec-value {
    font-weight: 600;
    color: var(--text-title);
}

.spec-value.id-value {
    font-family: monospace;
    background: #e8f5e9;
    padding: 0.1rem 0.4rem;
    border-radius: 2px;
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    gap: 0.5rem;
}

.tab-btn {
    background: none;
    border: 1px solid transparent;
    border-bottom: none;
    color: var(--text-muted);
    padding: 0.6rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border-top-left-radius: var(--radius-sm);
    border-top-right-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    margin-bottom: -1px;
}

.tab-btn:hover {
    color: var(--color-primary);
    background: #f4f6f3;
}

.tab-btn.active {
    color: var(--color-primary);
    background: #ffffff;
    border-color: var(--border-color) var(--border-color) #ffffff var(--border-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.academic-dropzone {
    border: 1.5px dashed var(--border-color);
    background: #fafbfc;
    border-radius: var(--radius-sm);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition-normal);
}

.academic-dropzone:hover, .academic-dropzone.dragover {
    border-color: var(--color-primary);
    background: #f4f8f3;
}

.upload-icon {
    font-size: 2.2rem;
    color: var(--color-secondary);
}

.upload-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-title);
}

.upload-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.camera-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.camera-viewfinder {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: #1a1e19;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: #8c9789;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.camera-viewfinder video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-placeholder-icon {
    font-size: 2.5rem;
    opacity: 0.5;
}

.camera-btn-group {
    display: flex;
    gap: 0.75rem;
}

.btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.2rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover:not(:disabled) {
    background-color: #21431c;
}

.btn-primary:disabled {
    background-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
}

.btn-secondary {
    background-color: #fafbfc;
    color: var(--text-body);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: #f4f6f3;
}

.academic-samples-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.sample-card {
    border: 1px solid var(--border-color);
    background: #fafbfc;
    border-radius: var(--radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: all var(--transition-normal);
}

.sample-card:hover {
    border-color: var(--color-primary);
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.sample-card.selected {
    border-color: var(--color-primary);
    background: #e8f5e9;
}

.sample-card img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: 2px;
}

.sample-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-muted);
}

.sample-card.selected .sample-label {
    color: var(--color-primary);
}

.preview-box {
    width: 100%;
    aspect-ratio: 4/3;
    background-color: #fafbfc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.preview-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.preview-empty i {
    font-size: 2.2rem;
    opacity: 0.5;
}

#image-preview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-dim {
    position: absolute;
    bottom: 0.5rem;
    right: 0.5rem;
    background-color: rgba(27, 51, 23, 0.85);
    color: #ffffff;
    padding: 0.2rem 0.5rem;
    font-family: monospace;
    font-size: 0.7rem;
    border-radius: 2px;
}

.session-status {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background-color: #fafbfc;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.status-indicator {
    color: var(--color-accent);
}

.status-indicator.loading {
    animation: spin 1s linear infinite;
    color: var(--color-secondary);
}

.status-indicator.success {
    color: var(--color-success);
}

.status-indicator.error {
    color: var(--color-error);
}

.predictions-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pred-row {
    background-color: #fafbfc;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.pred-row.highest {
    border-color: rgba(45, 90, 39, 0.4);
    background-color: #f4f8f3;
}

.pred-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

.class-name {
    font-weight: 500;
}

.pred-row.highest .class-name {
    font-weight: 700;
    color: var(--color-primary);
}

.pred-val {
    font-weight: 700;
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background-color: #e5eae3;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--color-accent);
    width: 0%;
    transition: width 0.5s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.pred-row.highest .progress-bar-fill {
    background-color: var(--color-primary);
}

.academic-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.copyright {
    font-size: 0.75rem;
    opacity: 0.8;
}

.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1000;
}

.toast {
    background-color: #1b3317;
    color: #ffffff;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1.25rem;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    animation: slideIn 0.3s ease forwards;
}

.toast-success {
    border-left: 3px solid var(--color-success);
}

.toast-error {
    border-left: 3px solid var(--color-error);
}

@keyframes slideIn {
    from { transform: translateY(1rem); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

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

.inspection-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.view-toggle {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #fafbfc;
}

.toggle-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 0.55rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.toggle-btn:not(:last-child) {
    border-right: 1px solid var(--border-color);
}

.toggle-btn:hover:not(:disabled) {
    background-color: #f4f6f3;
    color: var(--color-primary);
}

.toggle-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
}

.toggle-btn:disabled {
    background-color: #f0f3ef;
    color: #a0b09d;
    cursor: not-allowed;
}

.gradcam-note {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.35;
    background-color: #fcfdfe;
    border-left: 2.5px solid var(--border-color);
    padding: 0.4rem 0.60rem;
    border-radius: 2px;
}