:root {
    --primary: 25, 100%, 50%;
    --surface: 0, 0%, 98%;
    --text: 0, 0%, 10%;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --surface: 240, 5%, 15%;
    --text: 0, 0%, 90%;
}

/* Base styles */
body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: hsl(var(--surface));
    color: hsl(var(--text));
    line-height: 1.6;
    margin: 0;
    transition: background 0.3s ease;
}

.hero {
    padding: 4rem 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 2.5rem;
    margin: 0 0 1rem;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

/* Cards system */
.grid {
    display: grid;
    gap: 1.5rem;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 600px) {
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

.card {
    background: hsl(var(--surface));
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

/* Filters */
.filters {
    position: sticky;
    top: 0;
    background: hsl(var(--surface));
    padding: 1rem;
    z-index: 100;
}

input[type="search"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid hsl(var(--text)/0.1);
    border-radius: var(--radius);
    background: hsl(var(--surface));
    color: hsl(var(--text));
}

/* Accessibilité */
:focus-visible {
    outline: 2px solid hsl(var(--primary));
    outline-offset: 2px;
}

/* Mode sombre */
@media (prefers-color-scheme: dark) {
    :root {
        --surface: 240, 5%, 15%;
        --text: 0, 0%, 90%;
    }
}