/* Page & layout – match app aesthetic */
.grader-page {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: var(--space-lg);
}
.grader-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}
.grader-back-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}
.grader-back-link:hover {
    color: var(--accent-secondary);
}
.grader-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.grader-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
    align-items: start;
}
@media (max-width: 900px) {
    .grader-layout {
        grid-template-columns: 1fr;
    }
}
.grader-panel {
    min-width: 0;
}
.grader-panel-input {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}
.grader-panel-results {
    position: sticky;
    top: var(--space-lg);
}

/* Section cards – same as app cards */
.grader-section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-soft);
}
.grader-section-title {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.grader-icon {
    font-size: 1.25em;
}

/* Labels & inputs */
.grader-section-card label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-primary);
}
.grader-section-card select {
    display: block;
    width: 100%;
    max-width: 14rem;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--text-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}
.grader-section-card textarea {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: var(--text-base);
    resize: vertical;
    background: var(--bg-primary);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}
.grader-section-card textarea::placeholder {
    color: var(--text-muted);
}
.grader-essay-area {
    font-family: Georgia, 'Times New Roman', serif !important;
    line-height: 1.6 !important;
    min-height: 200px;
}

/* Actions & CTA – accent to match app */
.grader-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-md);
    align-items: center;
}
.grader-cta {
    background: var(--accent-primary);
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: var(--text-base);
    border: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}
.grader-cta:hover:not(:disabled) {
    background: var(--accent-secondary);
}
.grader-cta:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}
.grader-btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    cursor: pointer;
    margin-top: var(--space-sm);
}
.grader-btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}
.grader-file-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    color: var(--accent-primary);
    font-size: var(--text-sm);
}
.grader-file-label input {
    display: none;
}
.grader-error {
    color: var(--error-color);
    margin-top: var(--space-md);
    font-size: var(--text-sm);
}

/* Loading – use accent */
.grader-loading {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--space-2xl);
    text-align: center;
    box-shadow: var(--shadow-soft);
}
.grader-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: graderSpin 0.8s linear infinite;
    margin: 0 auto var(--space-md);
}
@keyframes graderSpin {
    to { transform: rotate(360deg); }
}
.grader-loading-text {
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}
.grader-loading-steps {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Grade card – success/accent palette */
.grader-grade-card-wrap {
    text-align: center;
}
.grader-grade-card {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-xl);
    min-width: 140px;
    background: var(--bg-primary);
    border: 2px solid var(--success-color);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
}
.grader-grade-letter {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
}
.grader-grade-total {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--accent-secondary);
    margin-top: var(--space-xs);
}
.grader-grade-tag {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* Rubric progress bars – app colors */
.grader-breakdown {
    margin-bottom: 0;
    font-size: var(--text-sm);
}
.grader-breakdown .grader-breakdown-title {
    display: none;
}
.grader-rubric-rows {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}
.grader-rubric-row {
    opacity: 0;
    animation: graderReveal 0.5s ease forwards;
}
.grader-rubric-row .rubric-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
    font-weight: 500;
    color: var(--text-primary);
}
.grader-rubric-row .rubric-bar-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}
.grader-rubric-bar {
    flex: 1;
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}
.grader-rubric-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease;
}
.grader-rubric-fill.score-4 { background: var(--success-color); }
.grader-rubric-fill.score-3 { background: var(--accent-primary); }
.grader-rubric-fill.score-2 { background: var(--warning-color); }
.grader-rubric-fill.score-1 { background: var(--error-color); }
.grader-rubric-fill.score-0 { background: var(--text-tertiary); }
.grader-rubric-num {
    font-weight: 700;
    min-width: 2.5rem;
    text-align: right;
    color: var(--accent-secondary);
}
.grader-rubric-reason {
    font-size: var(--text-xs);
    line-height: 1.4;
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}
.grader-rubric-total-row {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 2px solid var(--border-color);
    font-weight: 600;
}
@keyframes graderReveal {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Feedback section */
.grader-feedback-text {
    white-space: pre-wrap;
    line-height: 1.6;
    font-size: var(--text-sm);
    color: var(--text-primary);
}
.grader-feedback-text ul,
.grader-feedback-list {
    margin: 0;
    padding-left: 1.25rem;
}
.grader-feedback-text li,
.grader-feedback-list li {
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}
.grader-followup {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}
.grader-followup label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}
.grader-followup textarea {
    min-height: 60px;
    margin-bottom: var(--space-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.grader-followup-list {
    margin-top: var(--space-lg);
}
.grader-followup-item {
    margin-bottom: var(--space-md);
    padding: var(--space-md);
    border-radius: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
}
.grader-followup-item .q {
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}
.grader-followup-item .a {
    white-space: pre-wrap;
    line-height: 1.5;
    color: var(--text-secondary);
}

.grader-result-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}