:root {
    /* Color Variables */
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --accent: #f72585;
    --text: #2b2d42;
    --text-light: #6c757d;
    --background: #ffffff;
    --background-alt: #f8f9fa;
    --border: #e9ecef;
    --success: #4cc9f0;
    --warning: #f9c74f;
    --error: #f94144;
    
    /* Typography Variables */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;   /* 12px */
    --font-size-sm: 0.875rem;  /* 14px */
    --font-size-base: 1rem;    /* 16px */
    --font-size-lg: 1.125rem;  /* 18px */
    --font-size-xl: 1.25rem;   /* 20px */
    --font-size-2xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.875rem; /* 30px */
    
    /* Spacing Variables */
    --spacing-xs: 0.25rem;  /* 4px */
    --spacing-sm: 0.5rem;   /* 8px */
    --spacing-md: 1rem;     /* 16px */
    --spacing-lg: 1.5rem;   /* 24px */
    --spacing-xl: 2rem;     /* 32px */
    --spacing-2xl: 3rem;    /* 48px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text);
    background-color: var(--background);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body.no-scroll {
    overflow: hidden;
    height: 100vh;
}

body.no-scroll .navbar {
    position: absolute;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo h1 {
    font-size: var(--font-size-xl);
    margin: 0;
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-links li {
    display: flex;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.nav-links a:hover {
    color: var(--primary);
    background-color: rgba(67, 97, 238, 0.05);
}

.auth-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.auth-btn.primary {
    background-color: var(--primary);
    color: white;
}

.auth-btn.primary:hover {
    background-color: var(--primary-dark);
    color: white;
}

/* Main Content */
main {
    margin-top: 120px;
    flex: 1;
}

/* Auth Section Styles */
.auth-section {
    padding: var(--spacing-3xl) 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 120px);
    margin: 120px 0 60px 0;
}

.auth-section.no-scroll {
    min-height: 100vh;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    text-align: center;
    border: 1px solid var(--border);
}

.auth-card h2 {
    margin-bottom: var(--spacing-sm);
    text-align: center;
    color: var(--text);
    font-size: var(--font-size-3xl);
}

.auth-subtitle {
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    line-height: 1.6;
    font-size: var(--font-size-lg);
}

.auth-form {
    text-align: left;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
    background: var(--background-alt);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
    background: white;
}

.forgot-password {
    display: block;
    text-align: right;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--primary);
}

.forgot-password:hover {
    text-decoration: underline;
}

.auth-button {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.auth-button.primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.auth-button.primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.auth-button.secondary {
    background-color: white;
    color: var(--text);
    border: 1px solid var(--border);
}

.auth-button.secondary:hover {
    background-color: var(--background-alt);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.tos-group {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background-color: var(--background-alt);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.tos-group p {
    text-align: center;
    margin-bottom: 0;
    color: var(--text-light);
}

.tos-group a {
    color: var(--primary);
    font-weight: 500;
}

.tos-group a:hover {
    text-decoration: underline;
}

.auth-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    color: var(--text-light);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--border);
}

.auth-divider span {
    padding: 0 var(--spacing-md);
    font-size: var(--font-size-sm);
}

.auth-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.auth-footer p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin-bottom: 0;
    text-align: center;
}

.auth-footer a {
    color: var(--primary);
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Error message styling */
.error-message {
    background-color: rgba(249, 65, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: none;
    text-align: center;
}

/* Onboarding specific styles */
.onboarding-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding-top: 20px;
}

.avatar-upload {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.avatar-preview {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
    border: 3px solid var(--primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .auth-card {
        padding: var(--spacing-xl);
        margin: 0 var(--spacing-sm);
    }
    
    .auth-card h2 {
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--spacing-lg);
    }
    
    .auth-card h2 {
        font-size: var(--font-size-xl);
    }
    
    .auth-subtitle {
        font-size: var(--font-size-base);
    }
}