:root {
    --color-primary: #6c5ce7;
    --color-secondary: #a29bfe;
    --color-text: #333;
    --color-bg: #f9f9f9;
    --color-card: #fff;
    --color-dark-primary: #2d3436;
    --color-dark-secondary: #636e72;
    --color-dark-text: #f5f6fa;
    --color-dark-bg: #2d3436;
    --color-dark-card: #3d4448;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    --color-bg: var(--color-dark-bg);
    --color-card: var(--color-dark-card);
    --color-text: var(--color-dark-text);
}

header {
    background-color: var(--color-primary);
    color: white;
    padding: 1rem;
    text-align: center;
}

#toggle-theme {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

main {
    padding: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

section {
    background-color: var(--color-card);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h1, h2 {
    color: var(--color-primary);
}

form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: var(--color-secondary);
}

#lista-tareas {
    list-style: none;
    padding: 0;
}

#lista-tareas li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    border-bottom: 1px solid #eee;
}

#lista-tareas li:last-child {
    border-bottom: none;
}

#progreso-metas {
    margin-top: 1rem;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: var(--color-primary);
    color: white;
}