:root {
    --primary-color: #2563eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --bg-color: #f8fafc;
    --dark-color: #1e293b;
    --light-color: #ffffff;
    
    --dark-primary-color: #3b82f6;
    --dark-success-color: #34d399;
    --dark-error-color: #f87171;
    --dark-bg-color: #0f172a;
    --dark-text-color: #e2e8f0;
    --dark-element-color: #1e293b;
    --dark-border-color: #334155;
    --dark-hover-color: #1e40af;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    color: var(--dark-color);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: var(--primary-color);
    color: var(--light-color);
    text-align: center;
    padding: 2rem 1rem;
    position: relative;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    margin-top: 0.5rem;
    font-size: 1.2rem;
    opacity: 0.9;
}

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

.terms-container {
    background-color: var(--light-color);
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.terms-container h2 {
    color: var(--primary-color);
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 0.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.terms-container h2:first-child {
    margin-top: 0;
}

.terms-container p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

.terms-container ul {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.terms-container li {
    margin-bottom: 0.5rem;
}

.btn {
    background-color: var(--primary-color);
    color: var(--light-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    opacity: 0.9;
}

.return-link {
    text-align: center;
    margin-top: 1.5rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
    background-color: var(--dark-color);
    color: var(--light-color);
}

footer a {
    color: var(--light-color);
    opacity: 0.8;
    text-decoration: none;
}

footer a:hover {
    opacity: 1;
    text-decoration: underline;
}

.effective-date {
    margin-top: 2rem;
    font-style: italic;
    text-align: center;
    font-size: 0.9rem;
    color: #64748b;
}

.dark-mode-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 25px;
    background-color: #e2e8f0;
    border-radius: 25px;
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 5px;
    transition: background-color 0.3s ease;
}

body.dark-mode .dark-mode-toggle {
    background-color: #334155;
}

.toggle-circle {
    width: 20px;
    height: 20px;
    background-color: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    transform: translateX(0);
    transition: transform 0.3s ease;
}

body.dark-mode .toggle-circle {
    transform: translateX(25px);
}

.light-icon {
    display: inline;
    color: #f59e0b;
}

.dark-icon {
    display: none;
    color: #6366f1;
}

body.dark-mode .light-icon {
    display: none;
}

body.dark-mode .dark-icon {
    display: inline;
}

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

body.dark-mode header {
    background-color: var(--dark-primary-color);
}

body.dark-mode .terms-container {
    background-color: var(--dark-element-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

body.dark-mode .terms-container h2 {
    color: var(--dark-primary-color);
    border-color: var(--dark-border-color);
}

body.dark-mode .btn {
    background-color: var(--dark-primary-color);
    color: var(--light-color);
}

body.dark-mode .btn:hover {
    background-color: var(--dark-hover-color);
}

body.dark-mode a {
    color: var(--dark-primary-color);
}

body.dark-mode footer a[style*="color: var(--primary)"] {
    color: var(--dark-primary-color) !important;
}

body.dark-mode .effective-date {
    color: var(--dark-text-color);
    opacity: 0.7;
}

@media (max-width: 600px) {
    .terms-container {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    header p {
        font-size: 1rem;
    }
}
