/* ============================================
   GeneaWP - Design System & Global Styles
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Primary palette - Elegant green/teal for genealogy/nature/growth */
    --color-primary-50:  #ecfdf5;
    --color-primary-100: #d1fae5;
    --color-primary-200: #a7f3d0;
    --color-primary-300: #6ee7b7;
    --color-primary-400: #34d399;
    --color-primary-500: #10b981;
    --color-primary-600: #059669;
    --color-primary-700: #047857;
    --color-primary-800: #065f46;
    --color-primary-900: #064e3b;

    /* Accent - Warm amber for CTAs */
    --color-accent-400: #fbbf24;
    --color-accent-500: #f59e0b;
    --color-accent-600: #d97706;

    /* Neutrals */
    --color-gray-50:  #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Semantic */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error:   #ef4444;
    --color-info:    #3b82f6;

    /* Typography */
    --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border radius */
    --radius-sm:   0.375rem;
    --radius-md:   0.5rem;
    --radius-lg:   0.75rem;
    --radius-xl:   1rem;
    --radius-2xl:  1.5rem;
    --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 -2px rgba(0,0,0,0.1);
    --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0,0,0,0.25);

    /* Transitions */
    --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow:   350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --container-max: 1200px;
    --header-height: 72px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: #fff;
    overflow-x: hidden;
}

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

a {
    color: var(--color-primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-800);
}

/* --- Utility Classes --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.75rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary-700);
    border-color: var(--color-primary-300);
}

.btn-secondary:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-500);
    color: var(--color-primary-800);
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent-500), var(--color-accent-600));
    color: #fff;
}

.btn-accent:hover {
    background: linear-gradient(135deg, var(--color-accent-400), var(--color-accent-500));
    color: #fff;
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1.0625rem;
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.8125rem;
}

/* --- Section Styling --- */
.section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-primary-600);
    background: var(--color-primary-50);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* --- Responsive Grid --- */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}