:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #d0d5dd;
    --hover-bg: #f9fafb;
    --primary-color: #7f56d9;
    --primary-hover: #6941c6;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-secondary: #aaaaaa;
    --border-color: #444444;
    --hover-bg: #2d2d2d;
    --primary-color: #9d7fe3;
    --primary-hover: #b49bf0;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

main {
    width: 100%;
    max-width: 500px;
    padding: 2rem;
}

.container {
    background-color: var(--container-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--shadow-color);
    padding: 2rem;
    text-align: center;
    transition: background-color 0.3s, box-shadow 0.3s;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: background-color 0.2s, border-color 0.3s;
}

.upload-area:hover {
    background-color: var(--hover-bg);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
}

.upload-label svg {
    width: 32px;
    height: 32px;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

#imagePreview img {
    max-width: 100%;
    max-height: 200px;
    margin-top: 1rem;
    border-radius: 8px;
}

.analyze-button {
    background-color: var(--primary-color);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    width: 100%;
    margin-bottom: 1.5rem;
    transition: background-color 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.analyze-button:disabled {
    background-color: var(--border-color);
    cursor: not-allowed;
}

.analyze-button:not(:disabled):hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.results-area {
    text-align: left;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.results-area h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.results-area p {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}