:root {
    --color-primary: #3B82F6;
    --color-secondary: #2c3e50;
    --color-accent: #e74c3c;
    --color-background:#cccccc;
    --color-text: #34495e;
    --color-text-light: #7f8c8d;
    --color-white: #ffffff;
    --font-primary: 'Inter', sans-serif;
    --transition-speed: 0.3s;
}

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

body {
    font-family: var(--font-primary);
    background: linear-gradient(60deg, #1e40af, #122454);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.header {
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.header__logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}
.header__logo:hover {
    color: var(--color-success);
}

.nav__list {
    display: flex;
    list-style: none;
}

.nav__item:not(:last-child) {
    margin-right: 1.5rem;
}

.nav__link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}

.nav__link:hover {
    color: var(--color-accent);
}

.main {
    padding: 4rem 0;
}

.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero__title {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: white;
}

.analysis-tool {
    background-color: var(--color-white);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    padding: 2rem;
}

.analysis-tool__input {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-secondary);
}

.input-field {
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.input-field:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input-field--textarea {
    height: 150px;
    resize: vertical;
}

.file-upload {
    display: flex;
    align-items: center;
}

.file-upload__input {
    display: none;
}

.file-upload__label {
    background-color:#3B82F6;
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.file-upload__label:hover {
    background-color: #2980b9;
}

.file-upload__name {
    margin-left: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.analysis-tool__actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn--primary {
    background-color:#3B82F6;
    color: var(--color-white);
}

.btn--primary:hover {
    background-color: #2980b9;
}

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

.btn--secondary:hover {
    background-color: #34495e;
}

.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 2rem;
}

.loading-indicator__spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-left-color: var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

.loading-indicator__text {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--color-text-light);
}

.response-container {
    background-color: var(--color-background);
    border-radius: 10px;
    padding: 2rem;
    margin-top: 2rem;
}

.response-container__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.response-container__content {
    line-height: 1.8;
}

.response-container__content h1,
.response-container__content h2,
.response-container__content h3 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-secondary);
}

.response-container__content p {
    margin-bottom: 1rem;
}

.response-container__content ul,
.response-container__content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.response-container__content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.response-container__content th,
.response-container__content td {
    border: 1px solid #ddd;
    padding: 0.75rem;
    text-align: left;
}

.response-container__content th {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

.hidden {
    display: none;
}

@media (max-width: 768px) {
    .analysis-tool__input {
        grid-template-columns: 1fr;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }
}