:root {
    /* MCK Brand Colors */
    --color-primary: #2F67A8;
    --color-primary-dark: #214D82;
    --color-primary-light: #EAF2FA;

    /* Premium Gold Accent */
    --color-accent: #C9A227;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-background: #F7F9FC;
    --color-surface: #FFFFFF;

    /* Typography */
    --color-text-primary: #172033;
    --color-text-secondary: #5F6B7A;
    --color-text-muted: #8994A3;

    /* UI */
    --color-border: #E2E8F0;

    /* States */
    --color-success: #16805C;
    --color-warning: #B7791F;
    --color-error: #C53030;

    /* Legacy aliases for backward compatibility */
    --color-black: #172033;
    --color-text: #172033;
    --color-text-muted: #5F6B7A;

    /* Font families */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Manrope', system-ui, sans-serif;

    /* Spacing system */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);

    /* Container */
    --container-max: 1280px;
    --container-narrow: 900px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-4) 0;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.875rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
    margin: 0 0 var(--space-4) 0;
    color: var(--color-text-secondary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol { margin: 0 0 var(--space-4) 0; padding-left: var(--space-6); }
li { margin-bottom: var(--space-2); color: var(--color-text-secondary); }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-20) 0;
}

.section-alt {
    background-color: var(--color-background);
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--space-6);
}

.eyebrow {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-outline-white {
    background-color: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

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

.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-body { padding: var(--space-6); }

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47, 103, 168, 0.1);
}

.form-input::placeholder, .form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea { resize: vertical; min-height: 120px; }

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.form-error {
    font-size: 0.8125rem;
    color: var(--color-error);
    margin-top: var(--space-1);
}

.alert {
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
}

.alert-success {
    background-color: #d1fae5;
    color: var(--color-success);
    border: 1px solid #6ee7b7;
}

.alert-error {
    background-color: #fee2e2;
    color: var(--color-error);
    border: 1px solid #fca5a5;
}

.text-center { text-align: center; }
.text-muted { color: var(--color-text-secondary); }

.page-header {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: var(--space-20) 0;
}

.page-header h1 { color: var(--color-white); }
.page-header p { color: rgba(255, 255, 255, 0.75); }

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    border-radius: var(--radius-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}