:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --subtle-text: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 32px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

header p {
    font-size: 1.125rem;
    color: var(--subtle-text);
}

.mode-selector {
    display: flex;
    justify-content: center;
    background-color: var(--border-color);
    border-radius: 8px;
    padding: 4px;
    margin-bottom: 24px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.mode-button {
    padding: 8px 20px;
    border: none;
    background-color: transparent;
    color: var(--subtle-text);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.mode-button:disabled {
    color: #cbd5e1;
    cursor: not-allowed;
}


.mode-button.active {
    background-color: var(--card-background);
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.input-panel {
    margin-bottom: 16px;
}

.generator-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
}
.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

textarea#domain-input {
    width: 100%;
    min-height: 200px;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    resize: vertical;
    background-color: var(--card-background);
    transition: border-color 0.2s, box-shadow 0.2s;
}

textarea#domain-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.divider-or {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--subtle-text);
    margin: 16px 0;
}

.divider-or::before,
.divider-or::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider-or span {
    padding: 0 12px;
    font-size: 0.9rem;
    font-weight: 500;
}

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

.file-input {
    width: 0.1px;
    height: 0.1px;
    opacity: 0;
    overflow: hidden;
    position: absolute;
    z-index: -1;
}

.upload-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 20px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background-color: var(--card-background);
    color: var(--subtle-text);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-button:hover {
    border-color: var(--primary-color);
    background-color: #f4f4ff;
    color: var(--primary-color);
}

.main-actions {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    margin-bottom: 24px;
}

button#analyze-button {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
    gap: 8px;
    padding: 14px 24px;
    border-radius: 8px;
    border: none;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    height: 50px;
}

button#analyze-button:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

button#analyze-button:disabled {
    background-color: #a5b4fc;
    cursor: not-allowed;
}

.cancel-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 14px 24px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--card-background);
    color: var(--subtle-text);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    height: 50px;
}
.cancel-button:hover {
    border-color: var(--error-color);
    color: var(--error-color);
}

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 3px solid #fff;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

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

#progress-container {
    margin-bottom: 24px;
}

#progress-bar {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    border: none;
    overflow: hidden;
}

#progress-bar::-webkit-progress-bar {
    background-color: var(--border-color);
}

#progress-bar::-webkit-progress-value {
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

#progress-bar::-moz-progress-bar {
    background-color: var(--primary-color);
}

#summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 24px;
}

.summary-item {
    background-color: var(--card-background);
    padding: 16px;
    text-align: center;
}

.summary-item h3 {
    font-size: 0.9rem;
    color: var(--subtle-text);
    font-weight: 500;
    margin-bottom: 4px;
}

.summary-item p {
    font-size: 1.75rem;
    font-weight: 700;
}

.summary-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

#copy-all-button {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--subtle-text);
    padding: 4px 8px;
    font-size: 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}
#copy-all-button:hover {
    background-color: #f1f5f9;
    color: var(--text-color);
}

.results-container {
    margin-top: 24px;
}

.placeholder { 
    padding: 80px 20px; 
    text-align: center; 
    color: var(--subtle-text); 
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

#results-view {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.category-accordion {
    border-bottom: 1px solid var(--border-color);
}
.category-accordion:last-child {
    border-bottom: none;
}

.category-accordion summary {
    padding: 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}
.category-accordion summary::-webkit-details-marker {
    display: none;
}
.category-accordion summary:hover {
    background-color: #f8fafc;
}

.category-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.category-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.copy-cat-button {
    background-color: #f1f5f9;
    color: var(--subtle-text);
    border: none;
    padding: 6px 12px;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}
.copy-cat-button:hover {
    background-color: #e2e8f0;
    color: var(--text-color);
}

.domain-list {
    padding: 0 16px 16px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px 16px;
}

.domain-list p {
    padding: 4px;
    color: var(--subtle-text);
}


#actions-container {
    margin-top: 24px;
    display: flex;
    justify-content: center;
}

.action-button {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--success-color);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: background-color 0.2s;
}
.action-button:hover {
    background-color: #059669;
}


footer {
    text-align: center;
    margin-top: 40px;
    color: var(--subtle-text);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    #app { margin: 20px auto; padding: 15px; }
    header h1 { font-size: 2rem; }
    .generator-inputs { grid-template-columns: 1fr; }
}