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

:root {
    /* Tema oscuro (por defecto) */
    --primary-color: #3B82F6;
    --secondary-color: #1F2937;
    --accent-color: #10B981;
    --background-color: #111827;
    --surface-color: #1E293B;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
    --surface-alpha: rgba(249, 250, 251, 0.05);
    --border-alpha: rgba(249, 250, 251, 0.1);
}

/* Tema claro */
[data-theme="light"] {
    --primary-color: #2563EB;
    --secondary-color: #F3F4F6;
    --accent-color: #059669;
    --background-color: #FFFFFF;
    --surface-color: #F8FAFC;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
    --surface-alpha: rgba(0, 0, 0, 0.05);
    --border-alpha: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.container {
    max-width: 1000px;
    margin: 20px;
    padding: 0 20px;
    width: 100%;
    position: relative;
}

/* Theme Switcher */
.theme-switch {
    position: absolute;
    top: -60px;
    right: 20px;
    display: flex;
    gap: 1rem;
}

.theme-button {
    background: var(--surface-alpha);
    border: 1px solid var(--border-alpha);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-button:hover {
    background: var(--surface-color);
    transform: translateY(-2px);
}

.theme-button svg {
    width: 24px;
    height: 24px;
    fill: var(--text-primary);
}

.theme-button.active {
    background: var(--primary-color);
}

.theme-button.active svg {
    fill: white;
}

h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 700;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.password-container {
    background: var(--surface-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-alpha);
    margin-bottom: 3rem;
}

.password-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--surface-alpha);
    padding: 1rem;
    border-radius: 16px;
}

#passwordOutput {
    flex: 1;
    padding: 12px 20px;
    font-size: 1.2rem;
    border: 2px solid var(--border-alpha);
    border-radius: 12px;
    background: var(--background-color);
    color: var(--text-primary);
    font-family: 'Fira Code', monospace;
    transition: all 0.3s ease;
}

#passwordOutput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
}

.strength-badge {
    background: var(--success-color);
    color: var(--background-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.icon-button {
    background: var(--surface-alpha);
    border: none;
    cursor: pointer;
    padding: 12px;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    background: var(--surface-color);
    transform: rotate(180deg);
}

.icon-button svg {
    fill: var(--accent-color);
    transition: all 0.3s ease;
}

.primary-button {
    background: var(--primary-color);
    color: var(--text-primary);
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.primary-button:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

.options {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    background: var(--surface-alpha);
    padding: 2rem;
    border-radius: 16px;
}

.length-control {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--background-color);
    padding: 1rem;
    border-radius: 12px;
}

.control-button {
    background: var(--primary-color);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.control-button:hover {
    background: var(--accent-color);
    transform: scale(1.1);
}

input[type="range"] {
    flex: 1;
    height: 4px;
    background: var(--surface-alpha);
    border-radius: 2px;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.character-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    padding: 12px;
    background: var(--background-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.checkbox:hover {
    background: var(--surface-color);
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    border-radius: 6px;
    cursor: pointer;
    accent-color: var(--accent-color);
}

/* Nueva sección de información */
.info-section {
    background: var(--surface-color);
    border-radius: 24px;
    padding: 2.5rem;
    margin-top: 3rem;
    border: 1px solid var(--border-alpha);
    animation: fadeIn 0.6s ease-out;
}

.info-section h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.info-section h3 {
    color: var(--accent-color);
    font-size: 1.3rem;
    margin: 2rem 0 1rem;
}

.info-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.info-section ul,
.info-section ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.info-section li {
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    line-height: 1.5;
}

.info-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.features-section {
    background: var(--surface-alpha);
    border-radius: 16px;
    padding: 2rem;
    margin-top: 2rem;
}

.features-section ul {
    list-style-type: none;
    padding: 0;
}

.features-section li {
    padding: 1rem;
    background: var(--background-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.features-section li:hover {
    transform: translateX(10px);
    background: var(--surface-color);
}

/* Animaciones */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.password-container {
    animation: fadeIn 0.6s ease-out;
}

/* Estilos responsivos */
@media (max-width: 600px) {
    .container {
        padding: 0 10px;
    }

    .password-container,
    .info-section {
        padding: 1.5rem;
    }

    .password-display {
        flex-direction: column;
        gap: 1rem;
    }

    .checkbox-group {
        grid-template-columns: 1fr;
    }

    .info-section h2 {
        font-size: 1.8rem;
    }

    .info-section h3 {
        font-size: 1.2rem;
    }

    .info-section p,
    .info-section li {
        font-size: 1rem;
    }
}

/* Ajustes específicos para el tema claro */
[data-theme="light"] .primary-button {
    color: #FFFFFF;
}

[data-theme="light"] .control-button {
    color: #FFFFFF;
}

[data-theme="light"] .strength-badge {
    color: #FFFFFF;
}

[data-theme="light"] .checkbox {
    border: 1px solid var(--border-alpha);
}

footer {
    margin-top: 3rem;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-alpha);
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-text a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-text a:hover {
    color: var(--accent-color);
}

.footer-text span[role="img"] {
    color: var(--error-color);
    display: inline-block;
    transform: scale(1);
    transition: transform 0.3s ease;
}

.footer-text span[role="img"]:hover {
    transform: scale(1.2);
}