/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --ACME-blue: #0056A4;
    --ACME-light-blue: #0077CC;
    --ACME-green: #97C93D;
    --text-dark: #333333;
    --text-light: #666666;
    --background: #F5F7FA;
    --white: #FFFFFF;
    --error-red: #DC3545;
    --success-green: #28A745;
    --border-color: #DDD;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, #E8EDF2 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--ACME-blue);
    color: var(--white);
    padding: 20px 30px;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.tagline {
    font-size: 1rem;
    opacity: 0.9;
    margin-top: 5px;
}

/* Model Selector */
.model-selector {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    background: rgba(0, 0, 0, 0.2);
    padding: 6px;
    border-radius: 8px;
}

.model-btn {
    padding: 10px 20px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.model-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
}

.model-btn.active {
    background: var(--ACME-green);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Common Card Styles */
.welcome-card,
.form-card,
.response-card,
.error-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    width: 100%;
}

/* Welcome Screen */
.welcome-screen {
    text-align: center;
}

.welcome-card h2 {
    color: var(--ACME-blue);
    font-size: 2rem;
    margin-bottom: 20px;
}

.welcome-card p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--ACME-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--ACME-light-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--white);
    color: var(--ACME-blue);
    border: 2px solid var(--ACME-blue);
}

.btn-secondary:hover {
    background: var(--ACME-blue);
    color: var(--white);
}

.btn-test {
    background: var(--ACME-green);
    color: var(--white);
    padding: 8px 16px;
    font-size: 0.85rem;
    text-transform: none;
}

.btn-test:hover {
    background: #85b82c;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Form Styles */
.form-card {
    max-width: 1200px;
}

.form-card h2 {
    color: var(--ACME-blue);
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.test-case-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--background);
    border-radius: 8px;
    margin-bottom: 20px;
}

.test-case-label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section h3 {
    color: var(--ACME-blue);
    font-size: 1.2rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-section h3::before {
    content: "";
    width: 4px;
    height: 20px;
    background: var(--ACME-green);
    border-radius: 2px;
}

.form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--ACME-blue);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-hint {
    display: block;
    margin-top: 5px;
    color: var(--text-light);
    font-size: 0.85rem;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.form-actions button {
    flex: 1;
}

/* Loading Screen */
.loading-screen {
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-card {
    background: var(--white);
    padding: 50px 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.loader {
    border: 6px solid var(--background);
    border-top: 6px solid var(--ACME-blue);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    animation: spin 1s linear infinite;
    margin: 0 auto 30px;
}

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

.loading-title {
    color: var(--ACME-blue);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.loading-message {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.loading-steps {
    text-align: left;
    background: var(--background);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.loading-step {
    display: flex;
    align-items: center;
    padding: 12px 0;
    font-size: 1rem;
}

.loading-step:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.step-icon {
    font-size: 1.2rem;
    width: 30px;
    margin-right: 15px;
    color: var(--ACME-blue);
}

.loading-step:first-child .step-icon {
    color: var(--success-green);
}

.loading-step:nth-child(2) .step-icon {
    color: var(--ACME-blue);
    animation: rotate 1.5s linear infinite;
}

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

.loading-step:last-child .step-icon {
    color: var(--text-light);
}

.step-text {
    color: var(--text-dark);
    font-weight: 500;
}

.loading-note {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
}

/* Response Screen */
.response-card {
    max-width: 1400px;
    width: 100%;
}

.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.response-header h2 {
    color: var(--ACME-blue);
    font-size: 1.8rem;
}

.badge {
    background: var(--ACME-green);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.response-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.response-column {
    display: flex;
    flex-direction: column;
}

.response-title {
    color: var(--ACME-blue);
    font-size: 1.2rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--ACME-green);
}

.response-content {
    background: var(--background);
    padding: 25px;
    border-radius: 8px;
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--text-dark);
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
    flex: 1;
}

/* Markdown rendering styles */
.response-content h1,
.response-content h2,
.response-content h3,
.response-content h4 {
    color: var(--ACME-blue);
    margin-top: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.response-content h1 {
    font-size: 1.8rem;
    border-bottom: 2px solid var(--ACME-green);
    padding-bottom: 8px;
}

.response-content h2 {
    font-size: 1.5rem;
}

.response-content h3 {
    font-size: 1.3rem;
}

.response-content h4 {
    font-size: 1.1rem;
}

.response-content p {
    margin-bottom: 12px;
    white-space: normal;
}

.response-content ul,
.response-content ol {
    margin-left: 25px;
    margin-bottom: 15px;
    white-space: normal;
}

.response-content li {
    margin-bottom: 8px;
}

.response-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: var(--white);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.response-content table thead {
    background: var(--ACME-blue);
    color: var(--white);
}

.response-content table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--ACME-light-blue);
}

.response-content table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
}

.response-content table tr:last-child td {
    border-bottom: none;
}

.response-content table tr:nth-child(even) {
    background: var(--background);
}

.response-content table tr:hover {
    background: #e3f2fd;
}

.response-content code {
    background: rgba(0, 0, 0, 0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    color: #d63384;
}

.response-content pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 15px 0;
    white-space: pre;
}

.response-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: 0.9rem;
}

.response-content blockquote {
    border-left: 4px solid var(--ACME-green);
    padding-left: 15px;
    margin: 15px 0;
    color: var(--text-light);
    font-style: italic;
}

.response-content strong {
    font-weight: 700;
    color: var(--text-dark);
}

.response-content em {
    font-style: italic;
}

.response-content hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 20px 0;
}

.response-actions {
    display: flex;
    gap: 15px;
}

.response-actions button {
    flex: 1;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--white);
    padding: 0;
    border-radius: 12px;
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 2px solid var(--border-color);
    background: var(--background);
}

.modal-header h3 {
    color: var(--ACME-blue);
    font-size: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-light);
    transition: color 0.3s ease;
}

.close-btn:hover {
    color: var(--error-red);
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    max-height: calc(80vh - 80px);
}

.policy-section {
    margin-bottom: 25px;
}

.policy-section h4 {
    color: var(--ACME-blue);
    margin-bottom: 12px;
    font-size: 1.2rem;
    border-bottom: 2px solid var(--ACME-green);
    padding-bottom: 5px;
}

.policy-field {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.policy-field:last-child {
    border-bottom: none;
}

.policy-field-label {
    font-weight: 600;
    color: var(--text-dark);
    min-width: 200px;
}

.policy-field-value {
    color: var(--text-light);
}

/* Error Screen */
.error-screen {
    text-align: center;
}

.error-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.error-card h2 {
    color: var(--error-red);
    margin-bottom: 20px;
}

.error-message {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 25px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 30px;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        padding: 15px 20px;
        flex-direction: column;
        align-items: flex-start;
    }

    .logo h1 {
        font-size: 2rem;
    }

    .model-selector {
        width: 100%;
    }

    .model-btn {
        flex: 1;
        min-width: 0;
        font-size: 0.8rem;
        padding: 8px 12px;
    }

    .welcome-card,
    .form-card,
    .response-card,
    .error-card {
        padding: 25px;
    }

    .form-grid,
    .form-grid-2col {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .form-actions,
    .response-actions {
        flex-direction: column;
    }

    .response-container {
        grid-template-columns: 1fr;
    }

    .response-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .modal-content {
        width: 95%;
    }

    .policy-field {
        flex-direction: column;
    }

    .policy-field-label {
        min-width: auto;
        margin-bottom: 5px;
    }
}

/* Scrollbar Styling */
.response-content::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.response-content::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: var(--background);
}

.response-content::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: var(--ACME-blue);
    border-radius: 4px;
}

.response-content::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--ACME-light-blue);
}

/* Feedback Form */
.feedback-form {
    margin-top: 30px;
    padding: 20px;
    background: #F8F9FA;
    border: 2px solid var(--border-color);
    border-radius: 8px;
}

.feedback-title {
    color: var(--ACME-blue);
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.feedback-field {
    margin-bottom: 15px;
}

.feedback-field label {
    display: block;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.feedback-field select,
.feedback-field textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.feedback-field select:focus,
.feedback-field textarea:focus {
    outline: none;
    border-color: var(--ACME-blue);
}

.feedback-field textarea {
    resize: vertical;
    min-height: 80px;
}

.feedback-submit-btn {
    width: 100%;
    margin-top: 10px;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    padding: 20px 25px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(40, 167, 69, 0.3);
    display: flex;
    align-items: center;
    gap: 15px;
    min-width: 350px;
    z-index: 10000;
    animation: slideIn 0.4s ease-out;
    transition: opacity 0.3s ease-out, transform 0.3s ease-out;
}

.toast.hidden {
    opacity: 0;
    transform: translateX(400px);
    pointer-events: none;
}

.toast-icon {
    background: rgba(255, 255, 255, 0.2);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.toast-text {
    font-size: 0.95rem;
    opacity: 0.95;
    line-height: 1.4;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(400px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(400px);
    }
}

/* Responsive toast for mobile */
@media (max-width: 768px) {
    .toast {
        min-width: auto;
        max-width: calc(100% - 40px);
        left: 20px;
        right: 20px;
    }
}