:root {
            --at-blue: #0077b6;
            --at-dark: #03045e;
            --at-bg: #f1f5f9;
            --at-accent: #00b4d8;
        }

        body { 
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
            background-color: var(--at-bg); 
        }

        /* --- Style Écran de Connexion --- */
        .login-body { 
            height: 100vh; 
            display: flex; 
            align-items: center; 
            background: linear-gradient(135deg, var(--at-dark) 0%, var(--at-blue) 100%); 
        }

        .login-card {
            border: none;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
            overflow: hidden;
        }

        /* --- Style Dashboard --- */
        .admin-navbar { 
            background-color: var(--at-dark) !important; 
            border-bottom: 4px solid var(--at-accent); 
        }

        .welcome-banner {
            background: linear-gradient(135deg, var(--at-blue) 0%, var(--at-accent) 100%);
            color: white;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0,119,182,0.15);
        }

        .admin-card {
            background: white;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            text-decoration: none !important;
            color: var(--at-dark);
            transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
            border: 1px solid rgba(0,0,0,0.05);
            display: block;
            height: 100%;
        }

        .admin-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
            border-color: var(--at-accent);
        }

        .admin-card i {
            font-size: 3rem;
            color: var(--at-blue);
            margin-bottom: 15px;
            display: block;
        }

        .admin-card h5 { font-weight: 700; }
        .admin-card p { font-size: 0.85rem; color: #64748b; }