/* [RT-STACK-03, RT-UI-01] Styles de base FredImmo */
:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #f8fafc;
    --muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --danger: #ef4444;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Page de connexion [RM-AUTH-01] */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
}

.login-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 2rem;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.login-card h1 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--muted);
    margin-bottom: 0.375rem;
}

.form-group input {
    width: 100%;
    padding: 0.625rem 0.75rem;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s;
}

.btn-primary {
    width: 100%;
    background-color: var(--primary);
    color: #fff;
    margin-top: 0.5rem;
}

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

.btn-logout {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
}

.btn-logout:hover {
    border-color: var(--danger);
    color: var(--danger);
}

.error-msg {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.75rem;
    text-align: center;
    min-height: 1.25rem;
}

/* En-tête de la page principale [RM-AUTH-03] */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
}

.topbar h1 {
    font-size: 1.25rem;
}