:root {
    /* Light theme variables */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --accent-primary: #00a86b;
    --accent-secondary: #e6f4f1;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-primary: #00d68f;
    --accent-secondary: #1a3d2e;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
}

h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.theme-toggle {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 100;
}

#themeToggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

#themeToggle:hover {
    transform: scale(1.1);
}

.input-container {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    margin-bottom: 2rem;
}

textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 1rem;
    transition: border-color 0.3s;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.primary-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.result-container {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.result-container.visible {
    opacity: 1;
    transform: translateY(0);
}

.result-content {
    text-align: center;
}

.result-emoji {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

#resultScope {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

#resultExplanation {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.hidden {
    display: none;
}

footer {
    background: var(--bg-secondary);
    padding: 2rem;
    text-align: center;
    margin-top: auto;
}

.footer-links {
    margin-bottom: 1rem;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 1rem;
    transition: color 0.3s;
}

.footer-link:hover {
    color: var(--accent-primary);
}

.version {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .input-container,
    .result-container {
        padding: 1.5rem;
    }

    .footer-link {
        display: block;
        margin: 0.5rem 0;
    }
}