/* =========================================
   MAIN.CSS - Styles Globaux & Variables
   Version: 1.2
   ========================================= */

:root {
    /* --- Palette de Couleurs (Famille 2.0) --- */
    --color-primary: #4A90E2;       /* Bleu vibrant (Actions principales) */
    --color-primary-dark: #357ABD;  /* Bleu foncé (Hover) */
    --color-secondary: #50E3C2;     /* Vert/Cyan (Accents, Validation) */
    --color-secondary-dark: #3cd4b1;
    
    --color-background: #F8F9FA;    /* Fond de page gris très clair */
    --color-surface: #FFFFFF;       /* Fond des cartes (Blanc) */
    
    --color-text-dark: #333333;     /* Texte principal */
    --color-text-light: #FFFFFF;    /* Texte sur fond coloré */
    --color-muted: #999999;         /* Texte secondaire */
    
    --color-error: #D0021B;         /* Erreurs */
    --color-success: #7ED321;       /* Succès */
    
    /* --- Typographie & Formes --- */
    --font-family-base: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --border-radius: 8px;
    --box-shadow-subtle: 0 2px 4px rgba(0, 0, 0, 0.05);
    --box-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* --- Réinitialisation (Reset) --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--color-background);
    color: var(--color-text-dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1; /* Pousse le footer vers le bas */
    padding: 20px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* --- Typographie --- */
h1, h2, h3 {
    color: var(--color-primary);
    margin-bottom: 15px;
    font-weight: 500;
}

h1 { font-size: 2em; }
h2 { 
    font-size: 1.6em; 
    border-bottom: 2px solid var(--color-secondary);
    padding-bottom: 5px;
}
h3 { font-size: 1.3em; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover { color: var(--color-primary-dark); }

/* --- Boutons (.btn) --- */
.btn, button[type="submit"] {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    transition: background-color 0.3s, transform 0.1s;
    text-align: center;
}

.btn:hover, button[type="submit"]:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn.secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-dark);
}

.btn.secondary:hover {
    background-color: var(--color-secondary-dark);
}

.btn.small {
    padding: 5px 10px;
    font-size: 0.85em;
}

/* --- Formulaires --- */
form div { margin-bottom: 15px; }
label { display: block; margin-bottom: 5px; font-weight: 600; }

input[type="text"], 
input[type="email"], 
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #DDDDDD;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* --- Composants Globaux --- */
.card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-subtle);
    padding: 20px;
    margin-bottom: 20px;
}

.error-message, .success-message {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-weight: 500;
}

.error-message {
    background-color: #F8D7DA;
    color: var(--color-error);
    border: 1px solid #f5c6cb;
}

.success-message {
    background-color: #D4EDDA;
    color: var(--color-success);
    border: 1px solid #c3e6cb;
}

/* --- Footer --- */
footer {
    padding: 20px;
    text-align: center;
    border-top: 1px solid #EEEEEE;
    color: var(--color-muted);
    font-size: 0.9em;
    margin-top: auto;
    background-color: var(--color-surface);
}