:root {
    /* Color Palette - MySplit Recovery Design System */

    /* Brand Colors */
    --primary-color: #34D399;
    /* rsPrimary (Soft Emerald) */
    --primary-dark: #34D399;
    /* On dark mode, primary is legible */
    --secondary-color: #3B82F6;
    /* rsSecondary (Bright Azure) */

    /* Backgrounds (Dark Mode Default) */
    --background-color: #121623;
    /* rsBackground Dark */
    --surface-color: #1B2136;
    /* rsSurface Dark */
    --border-color: rgba(255, 255, 255, 0.08);
    /* rsSurfaceStroke Dark */

    /* Text (Dark Mode Default) */
    --text-primary: #FFFFFF;
    --text-secondary: #EBEBF5;
    --text-tertiary: rgba(235, 235, 245, 0.60);

    /* Typography */
    --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 64px;

    /* Layout */
    --container-width: 960px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* Light Mode Overrides */
:root.light-mode {
    --primary-dark: #059669;
    /* Darker shade for hover/text */

    /* Backgrounds */
    --background-color: #F2F2F7;
    /* rsBackground */
    --surface-color: #FFFFFF;
    /* rsSurface */
    --border-color: rgba(0, 0, 0, 0.08);
    /* rsSurfaceStroke */

    /* Text */
    --text-primary: #000000;
    --text-secondary: #3C3C43;
    /* System Gray */
    --text-tertiary: #8A8A8E;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--primary-dark);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.8;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-xxl) 0;
}

/* Typography */
h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
}

/* Components */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 100px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #121623;
    /* Dark text on Emerald button */
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 211, 153, 0.4);
}

.card {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Header */
header {
    background-color: var(--surface-color);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xxl);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo span {
    color: var(--primary-dark);
}

nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

nav ul {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

nav a {
    color: var(--text-secondary);
    font-weight: 500;
}

nav a:hover {
    color: var(--primary-dark);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Footer */
footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
    padding: var(--spacing-xxl) 0;
    margin-top: var(--spacing-xxl);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

footer .links {
    margin-bottom: var(--spacing-md);
}

footer a {
    margin: 0 var(--spacing-sm);
    color: var(--text-secondary);
}

/* Privacy & Terms Specifics */
.legal-content .last-updated {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xl);
}

.legal-content h2 {
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}