:root {
    --bg-primary: rgb(245, 245, 247); /* Light Gray */
    --text-primary: rgb(33, 37, 41); /* Charcoal */
    --link-active: rgb(99, 102, 241); /* Indigo */
    --text-secondary: rgb(100, 116, 139); /* Slate */
    --border-soft: rgb(229, 231, 235); /* Cool Gray */
    --btn-success: rgb(52, 211, 153); /* Emerald */
    --btn-danger: rgb(239, 68, 68); /* Red */
}

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header {
    background-color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--link-active);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.nav-link-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    font-weight: 600;
    box-shadow: 0 4px 15px 0 rgba(102, 126, 234, 0.4);
    border: none;
}

.nav-link-cta:hover {
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.6);
}

.main {
    padding: 2rem 0;
    flex-grow: 1;
}

.footer {
    background-color: white;
    border-top: 1px solid var(--border-soft);
    padding: 2rem 0;
    margin-top: 2rem;
    color: var(--text-secondary);
}