/* Design tokens */
:root {
    /* Warm palette */
    --color-brown-900: #3e2723;
    --color-brown-800: #4e342e;
    --color-brown-700: #5d4037;
    --color-brown-600: #6d4c41;
    --color-brown-500: #795548;
    --color-brown-400: #8d6e63;
    --color-brown-300: #a1887f;
    --color-brown-200: #bcaaa4;
    --color-brown-100: #d7ccc8;
    --color-brown-50: #efebe9;

    --color-cream: #fdf8f0;
    --color-cream-dark: #f5efe3;

    --color-amber-600: #f59e0b;
    --color-amber-500: #f5a623;
    --color-amber-400: #fbbf24;
    --color-amber-300: #fcd34d;

    --color-coral: #e8734a;
    --color-coral-dark: #d4603a;

    /* Semantic tokens */
    --color-bg: var(--color-cream);
    --color-bg-alt: var(--color-cream-dark);
    --color-bg-card: #ffffff;
    --color-text: var(--color-brown-900);
    --color-text-muted: var(--color-brown-400);
    --color-text-light: var(--color-brown-300);
    --color-primary: var(--color-coral);
    --color-primary-hover: var(--color-coral-dark);
    --color-accent: var(--color-amber-500);
    --color-border: var(--color-brown-100);
    --color-error: #dc2626;
    --color-success: #16a34a;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: Georgia, 'Times New Roman', 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;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* 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 -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);

    /* Layout */
    --max-width: 1200px;
    --nav-height: 64px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
    color: var(--color-brown-800);
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 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 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    line-height: 1;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--color-brown-300);
    background: var(--color-bg-alt);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    border-radius: var(--radius-lg);
}

/* #app container */
#app {
    flex: 1 0 auto;
}

/* Fade-in animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

/* Footer */
.site-footer {
    background: var(--color-brown-800);
    color: var(--color-brown-200);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.site-footer a {
    color: var(--color-brown-100);
}

.site-footer a:hover {
    color: white;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
    font-size: 0.875rem;
}

.footer-copy {
    font-size: 0.875rem;
}