:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --bg: #0a0a0b;
    --card: #16161a;
    --card-hover: #1c1c21;
    --text: #ffffff;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --glass: rgba(255, 255, 255, 0.03);
    --shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    --radius-lg: 24px;
    --radius-md: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 100% 100%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
}

/* --- Layout Elements --- */
.hub-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hub-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hub-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4), 0 30px 60px rgba(0, 0, 0, 0.6);
}

/* --- Typography --- */
h1, h2, h3 {
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

h1 span {
    color: var(--primary);
}

.text-gradient {
    background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Buttons --- */
.hub-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    text-decoration: none;
}

.hub-btn-primary {
    background: var(--primary);
    color: #fff;
}

.hub-btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

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

.hub-btn-outline:hover {
    background: var(--glass);
    border-color: var(--text);
}

/* --- Form Elements --- */
.hub-input, .hub-select, .hub-textarea {
    width: 100%;
    background: #000000; /* Plus de contraste pour le fond */
    border: 1px solid rgba(255, 255, 255, 0.2); /* Bordure plus visible */
    border-radius: var(--radius-md);
    padding: 0.8rem 1rem;
    color: #ffffff; /* Texte blanc pur */
    font-family: inherit;
    transition: all 0.2s ease;
}

.hub-input:focus, .hub-select:focus, .hub-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.hub-select option {
    background: #16161a;
    color: #fff;
}

/* --- Footer & Header (Centralized Styles) --- */
.hub-header {
    padding: 1.5rem 0;
    margin-bottom: 3rem;
    border-bottom: 1px solid var(--border);
}

.hub-footer {
    margin-top: 6rem;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
    background: rgba(22, 22, 26, 0.5);
    backdrop-filter: blur(20px);
}

/* --- Grid System --- */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* --- Utilities --- */
.mb-2 { margin-bottom: 2rem; }
.text-center { text-align: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }