:root {
    --ga-primary: #6366f1;
    --ga-primary-dark: #4f46e5;
    --ga-secondary: #ec4899;
    --ga-bg: #f8fafc;
    --ga-card-bg: rgba(255, 255, 255, 0.8);
    --ga-text: #1e293b;
    --ga-text-muted: #64748b;
    --ga-border: #e2e8f0;
    --ga-radius: 16px;
    --ga-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --ga-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark-mode {
    --ga-bg: #0f172a;
    --ga-card-bg: rgba(30, 41, 59, 0.8);
    --ga-text: #f1f5f9;
    --ga-text-muted: #94a3b8;
    --ga-border: #334155;
}

.gist-analyst-wrapper {
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background: var(--ga-card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--ga-border);
    border-radius: var(--ga-radius);
    box-shadow: var(--ga-shadow);
    font-family: 'Inter', sans-serif;
    color: var(--ga-text);
}

.gist-analyst-header {
    text-align: center;
    margin-bottom: 40px;
}

.gist-analyst-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--ga-primary), var(--ga-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gist-analyst-subtitle {
    font-size: 1.1rem;
    color: var(--ga-text-muted);
}

.gist-analyst-input-group {
    margin-bottom: 24px;
}

.gist-analyst-input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.gist-analyst-toggle-group {
    display: flex;
    gap: 12px;
    background: var(--ga-bg);
    padding: 6px;
    border-radius: 12px;
    border: 1px solid var(--ga-border);
}

.gist-analyst-toggle {
    flex: 1;
    padding: 10px;
    border: none;
    background: transparent;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--ga-transition);
    color: var(--ga-text-muted);
}

.gist-analyst-toggle.active {
    background: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    color: var(--ga-primary);
}

.gist-analyst-file-dropzone {
    position: relative;
    border: 3px dashed var(--ga-primary);
    border-radius: var(--ga-radius);
    padding: 80px 40px; /* Much larger padding */
    text-align: center;
    transition: var(--ga-transition);
    background: rgba(99, 102, 241, 0.05); /* Slight tint by default */
    cursor: pointer;
    margin-bottom: 20px;
}

.gist-analyst-file-dropzone:hover, .gist-analyst-file-dropzone.drag-over {
    border-color: var(--ga-secondary);
    background: rgba(99, 102, 241, 0.1);
    transform: scale(1.01);
}

.dropzone-icon {
    font-size: 3.5rem; /* Larger icon */
    display: block;
    margin-bottom: 15px;
}

.dropzone-text {
    font-size: 1.25rem; /* Larger text */
    font-weight: 600;
    color: var(--ga-primary);
}

.dropzone-hint {
    font-size: 0.9rem;
    color: var(--ga-text-muted);
    margin-top: 8px;
}

.file-name-display {
    display: block;
    margin-top: 10px;
    font-weight: 600;
    color: var(--ga-primary);
}

.dropzone-content {
    position: relative;
    pointer-events: none; /* Allows clicks to pass through to the hidden file input */
}

input[type="url"], textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--ga-border);
    border-radius: 12px;
    background: var(--ga-bg);
    color: var(--ga-text);
    font-family: inherit;
    transition: var(--ga-transition);
}

input[type="url"]:focus, textarea:focus {
    outline: none;
    border-color: var(--ga-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.gist-analyst-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--ga-primary), var(--ga-primary-dark));
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--ga-transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.gist-analyst-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.gist-analyst-btn:active {
    transform: translateY(0);
}

.gist-analyst-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Loader */
.btn-loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: ga-spin 0.8s linear infinite;
}

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

/* Results section */
.gist-analyst-results {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--ga-border);
    animation: ga-fade-in 0.5s ease;
}

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

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.results-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    margin: 0;
}

.gist-analyst-reset-btn {
    padding: 8px 16px;
    background: var(--ga-bg);
    border: 1px solid var(--ga-border);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--ga-transition);
}

.gist-analyst-reset-btn:hover {
    background: var(--ga-border);
}

.results-content {
    line-height: 1.8;
    background: var(--ga-bg);
    padding: 32px;
    border-radius: 12px;
    font-size: 1.05rem;
}

.pedagogical-report h2, .pedagogical-report h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--ga-primary);
    border-bottom: 2px solid var(--ga-border);
    padding-bottom: 8px;
}

.pedagogical-report strong {
    color: var(--ga-primary-dark);
}

.pedagogical-report ul {
    background: rgba(99, 102, 241, 0.05);
    padding: 20px 40px;
    border-radius: 12px;
    margin: 20px 0;
}

.pedagogical-report li {
    margin-bottom: 10px;
}

.pedagogical-report br + br {
    display: block;
    content: "";
    margin-top: 10px;
}

.analysis-category {
    margin-bottom: 20px;
}

.analysis-category h3 {
    font-size: 1.1rem;
    color: var(--ga-primary);
    margin-bottom: 8px;
}

.feedback-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.tag-accurate { background: #dcfce7; color: #166534; }
.tag-partial { background: #fef9c3; color: #854d0e; }
.tag-inaccurate { background: #fee2e2; color: #991b1b; }